================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM N-Q Quarterly Schedule of Portfolio Holdings of Registered Management Investment Company Investment Company Act file number 811-05531 MassMutual Participation Investors -------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 1500 Main Street, Suite 600, Springfield, MA 01115 -------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Patricia J. Walsh, Vice President and Secretary, 1500 Main Street, Suite 2800, Springfield, MA 01115 -------------------------------------------------------------------------------- (Name and address of agent for service) Registrant's telephone number, including area code: 413-226-1000 ___________________ Date of fiscal year end: 12/31 ___________________ Date of reporting period: 09/30/08 ___________________ ================================================================================ ITEM 1. SCHEDULE OF INVESTMENTS. CONSOLIDATED SCHEDULE OF INVESTMENTS September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES - 83.50%:(A) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ PRIVATE PLACEMENT INVESTMENTS - 79.98% A H C HOLDING COMPANY, INC. A designer and manufacturer of boilers and water heaters for the commercial sector. 15% Senior Subordinated Note due 2015 $ 1,253,897 11/21/07 $ 1,228,767 $ 1,178,107 Limited Partnership Interest (B) 7.93% int. 11/21/07 119,009 113,060 ------------ ------------ 1,347,776 1,291,167 ------------ ------------ A T I ACQUISITION COMPANY A for-profit post-secondary school serving students in Texas, Florida and Arizona. 12% Senior Subordinated Note due 2012 $ 1,125,000 04/08/04 1,125,000 1,125,000 Warrant, exercisable until 2012, to purchase preferred stock at $.01 per share (B) 7 shs. 11/16/07 -- 9,340 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 1,230 shs. 04/08/04 -- 317,351 ------------ ------------ 1,125,000 1,451,691 ------------ ------------ A W X HOLDINGS CORPORATION A provider of aerial equipment rental, sales and repair services to non-residential construction and maintenance contractors operating in the State of Indiana. 10.5% Senior Secured Term Note due 2014 $ 420,000 05/15/08 411,600 407,558 13% Senior Subordinated Note due 2015 $ 420,000 05/15/08 377,087 403,586 Common Stock (B) 60,000 shs. 05/15/08 60,000 57,000 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 21,099 shs. 05/15/08 35,654 211 ------------ ------------ 884,341 868,355 ------------ ------------ ADVANCED TECHNOLOGIES HOLDINGS A provider of factory maintenance services to industrial companies. 15% Senior Subordinated Note due 2013 $ 1,096,623 12/27/07 1,074,753 1,065,318 Preferred Stock (B) 546 shs. 12/27/07 270,000 256,501 ------------ ------------ 1,344,753 1,321,819 ------------ ------------ AERO HOLDINGS, INC. A provider of geospatial services to corporate and government clients. 10.5% Senior Secured Term Note due 2014 $ 930,000 03/09/07 916,050 902,291 14% Senior Subordinated Note due 2015 $ 720,000 03/09/07 650,014 693,665 Common Stock (B) 150,000 shs. 03/09/07 150,000 186,799 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 37,780 shs. 03/09/07 63,730 47,048 ------------ ------------ 1,779,794 1,829,803 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 7 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ ALL CURRENT HOLDING COMPANY A specialty re-seller of essential electrical parts and components primarily serving wholesale distributors. 12% Senior Subordinated Note due 2015 $ 603,697 09/26/08 $ 548,163 $ 584,225 Common Stock (B) 713 shs. 09/26/08 71,303 67,735 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 507 shs. 09/26/08 46,584 5 ------------ ------------ 666,050 651,965 ------------ ------------ AMERICAN HOSPICE MANAGEMENT HOLDING LLC A for-profit hospice care provider in the United States. 12% Senior Subordinated Note due 2013 $ 1,687,503 * 1,606,040 1,660,100 Preferred Class A Unit (B) 1,706 uts. ** 170,600 85,300 Preferred Class B Unit (B) 808 uts. 06/09/08 80,789 80,789 Common Class B Unit (B) 16,100 uts. 01/22/04 1 -- Common Class D Unit (B) 3,690 uts. 09/12/06 -- -- ------------ ------------ 1,857,430 1,826,189 ------------ ------------ ARROW TRU-LINE HOLDINGS, INC. A manufacturer of hardware for residential and commercial overhead garage doors in North America. 12% Senior Subordinated Note due 2012 $ 861,702 05/18/05 824,182 798,322 Common Stock (B) 263 shs. 05/18/05 263,298 24,212 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 69 shs. 05/18/05 59,362 6,348 ------------ ------------ 1,146,842 828,882 ------------ ------------ BRAVO SPORTS HOLDING CORPORATION A designer and marketer of niche branded consumer products including canopies, trampolines, in-line skates, skateboards, and urethane wheels. 12.5% Senior Subordinated Note due 2014 $ 1,207,902 06/30/06 1,143,951 1,181,592 Preferred Stock Class A (B) 465 shs. 06/30/06 141,946 96,613 Common Stock (B) 1 sh. 06/30/06 152 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 164 shs. 06/30/06 48,760 33,954 ------------ ------------ 1,334,809 1,312,159 ------------ ------------ C D N T, INC. A value-added converter and distributor of specialty pressure sensitive adhesives, foams, films, and foils. 10.5% Senior Secured Term Note due 2014 $ 429,070 08/07/08 420,489 419,400 12.5% Senior Subordinated Note due 2015 $ 429,070 08/07/08 387,954 415,200 Common Stock (B) 41,860 shs. 08/07/08 41,860 39,767 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 32,914 shs. 08/07/08 32,965 329 ------------ ------------ 883,268 874,696 ------------ ------------ * 01/22/04 and 06/09/08. ** 01/22/04 and 09/12/06. -------------------------------------------------------------------------------------------------------------------------------- 8 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ CAPESUCCESS LLC A provider of diversified staffing services. Preferred Membership Interests (B) 806 uts. 04/29/00 $ 3,598 $ -- Common Membership Interests (B) 10,421 uts. 04/29/00 46,706 -- ------------ ------------ 50,304 -- ------------ ------------ CAPITAL SPECIALTY PLASTICS, INC. A producer of desiccant strips used for packaging pharmaceutical products. Common Stock (B) 55 shs. * 252 279,466 COEUR, INC. A producer of proprietary, disposable power injection syringes. 8.75% Senior Secured Term Note due 2010 $ 141,304 04/30/03 141,304 141,304 11.5% Senior Subordinated Note due 2011 $ 242,754 04/30/03 232,402 242,754 Common Stock (B) 72,464 shs. 04/30/03 72,463 134,240 Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 50,099 shs. 04/30/03 23,317 92,808 ------------ ------------ 469,486 611,106 ------------ ------------ CONNECTICUT ELECTRIC, INC. A supplier and distributor of electrical products sold into the retail and wholesale markets. 12% Senior Subordinated Note due 2014 $ 1,267,387 01/12/07 1,182,283 1,060,997 Limited Liability Company Unit Class A (B) 82,613 uts. 01/12/07 82,613 7,385 Limited Liability Company Unit Class C (B) 59,756 uts. 01/12/07 59,756 5,342 ------------ ------------ 1,324,652 1,073,724 ------------ ------------ CONNOR SPORT COURT INTERNATIONAL, INC. A designer and manufacturer of outdoor and indoor synthetic sports flooring and other temporary flooring products. Preferred Stock Series B-2 (B) 9,081 shs. 07/05/07 370,796 741,592 Preferred Stock Series C (B) 4,757 shs. 07/05/07 158,912 243,157 Common Stock (B) 380 shs. 07/05/07 4 4 Limited Partnership Interest (B) 4.43% int. ** 103,135 -- ------------ ------------ 632,847 984,753 ------------ ------------ COREPHARMA LLC A manufacturer of oral dose generic pharmaceuticals targeted at niche applications. 12% Senior Subordinated Note due 2013 $ 1,350,000 08/04/05 1,295,663 1,295,762 Warrant, exercisable until 2013, to purchase common stock at $.001 per share (B) 10 shs. 08/04/05 72,617 53,992 ------------ ------------ 1,368,280 1,349,754 ------------ ------------ * 12/30/97 and 05/29/99. ** 08/12/04 and 01/14/05. -------------------------------------------------------------------------------------------------------------------------------- 9 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ CRANE RENTAL CORPORATION A crane rental company. 13% Senior Subordinated Note due 2015 $ 1,215,000 08/21/08 $ 1,088,381 $ 1,181,016 Common Stock (B) 135,000 shs. 08/21/08 135,000 128,250 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 72,037 shs. 08/21/08 103,143 720 ------------ ------------ 1,326,524 1,309,986 ------------ ------------ DAVIS-STANDARD LLC A manufacturer, assembler, and installer of a broad range of capital equipment that is used in the extrusion, conversion, and processing of plastic materials. 12% Senior Subordinated Note due 2014 $ 978,261 10/30/06 921,876 978,261 Limited Partnership Interest (B) 0.97% int. 10/30/06 371,739 704,858 Warrant, exercisable until 2014, to purchase preferred stock at $.01 per share (B) 26 shs. 10/30/06 26,380 31,249 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 18 shs. 10/30/06 18,000 70,988 ------------ ------------ 1,337,995 1,785,356 ------------ ------------ DIVERSCO, INC./DHI HOLDINGS, INC. A contract provider of janitorial and equipment maintenance services and temporary production labor to industrial customers. Membership Interests of MM/Lincap Diversco Investments Ltd. LLC (B) 13.57% int. 08/27/98 366,495 -- Preferred Stock (B) 1,639 shs. 12/14/01 1,392,067 633,325 Warrants, exercisable until 2011, to purchase common stock of DHI Holdings, Inc. at $.01 per share (B) 6,676 shs. * 201,655 -- ------------ ------------ 1,960,217 633,325 ------------ ------------ DUNCAN SYSTEMS, INC. A distributor of windshields and side glass for the recreational vehicle market. 10% Senior Secured Term Note due 2013 $ 308,571 11/01/06 303,942 291,247 13% Senior Subordinated Note due 2014 $ 488,572 11/01/06 441,047 452,970 Common Stock (B) 102,857 shs. 11/01/06 102,857 90,668 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 32,294 shs. 11/01/06 44,663 28,467 ------------ ------------ 892,509 863,352 ------------ ------------ DWYER GROUP, INC. A franchiser of a variety of home repair services. Common Stock (B) 3,656 shs. ** 365,600 594,683 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 1,077 shs. 10/30/03 98,719 175,121 ------------ ------------ 464,319 769,804 ------------ ------------ * 10/24/96 and 08/28/98. ** 10/30/03 and 01/02/04. -------------------------------------------------------------------------------------------------------------------------------- 10 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ E S P HOLDCO, INC. A manufacturer of power protection technology for commercial office equipment, primarily supplying the office equipment dealer network. 14% Senior Subordinated Note due 2015 $ 1,186,688 01/08/08 $ 1,165,996 $ 1,118,010 Common Stock (B) 349 shs. 01/08/08 174,701 165,775 ------------ ------------ 1,340,697 1,283,785 ------------ ------------ E X C ACQUISITION CORPORATION A manufacturer of pre-filled syringes and pump systems used for intravenous drug delivery. Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 11 shs. 06/28/04 40,875 105,249 ------------ ------------ ELECTRA BICYCLE COMPANY LLC A designer and marketer of branded leisure bicycles. 15.5% Senior Secured Term Note A due 2009 $ 36,437 04/12/07 35,709 36,437 10.5% Senior Secured Term Note B due 2012 $ 360,729 04/12/07 355,590 360,729 12% Senior Secured Term Note C due 2012 $ 291,498 04/12/07 271,410 297,328 Limited Liability Company Unit Series F 36,913 uts. 04/12/07 36,913 89,792 Limited Liability Company Unit Series G 2,852 uts. 04/12/07 2,852 6,938 ------------ ------------ 702,474 791,224 ------------ ------------ ENZYMATIC THERAPY, INC. A manufacturer and distributor of branded natural medicines and nutritional supplements. Limited Partnership Interest (B) 0.70% int. 03/30/00 281,250 189,028 Warrant, exercisable until 2009, to purchase common stock at $.01 per share (B) 15,415 shs. 03/30/00 135,000 118,640 ------------ ------------ 416,250 307,668 ------------ ------------ EVANS CONSOLES, INC. A designer and manufacturer of consoles and control center systems. Common Stock (B) 45,000 shs. 05/06/04 6 541,417 ------------ ------------ F H S HOLDINGS LLC A national provider of customized disease management services to large self-insured employers. 12% Senior Subordinated Note due 2014 $ 1,265,625 06/01/06 1,189,095 1,139,063 Preferred Unit (B) 84 uts. 06/01/06 84,368 69,107 Common Unit Class B (B) 734 shs. 06/01/06 64,779 -- ------------ ------------ 1,338,242 1,208,170 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 11 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ FLUTES, INC. An independent manufacturer of micro fluted corrugated sheet material for the food and consumer products packaging industries. 10% Senior Secured Term Note due 2013 $ 524,791 04/13/06 $ 516,919 $ 474,533 14% Senior Subordinated Note due 2014 $ 317,177 04/13/06 288,542 285,739 Common Stock (B) 62,535 shs. 04/13/06 62,535 -- Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 17,680 shs. 04/13/06 27,676 -- ------------ ------------ 895,672 760,272 ------------ ------------ FOWLER HOLDING, INC. A provider of site development services to residential homebuilders and developers in the Raleigh/Durham region of North Carolina. 12% Senior Subordinated Note due 2013 $ 1,252,174 02/03/06 1,153,491 939,131 Common Stock (B) 98 shs. 02/03/06 97,826 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 135 shs. 02/03/06 110,348 -- ------------ ------------ 1,361,665 939,131 ------------ ------------ FUEL SYSTEMS HOLDING CORPORATION An independent North American supplier of fuel tanks for a wide variety of commercial vehicles. 12% Senior Subordinated Note due 2014 $ 1,237,500 01/31/06 1,163,687 618,750 Preferred Stock (B) 16,792 shs. 06/12/08 16,792 -- Common Stock (B) 112,500 shs. 01/31/06 112,500 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 73,275 shs. 01/31/06 63,113 -- ------------ ------------ 1,356,092 618,750 ------------ ------------ GOLDEN COUNTY FOODS HOLDING, INC. A manufacturer of frozen appetizers and snacks. 12% Senior Subordinated Note due 2015 $ 1,012,500 11/01/07 914,607 911,250 8% Series A Convertible Preferred Stock, convertible into 4.25% of the fully diluted common shares (B) 77,643 shs. 11/01/07 77,643 776 ------------ ------------ 992,250 912,026 ------------ ------------ GQ HOLDINGS LLC A developer and distributor of tools, equipment, and supplies to the natural and engineered stone industry. 15% Senior Subordinated Note due 2015 $ 1,217,159 06/27/08 1,192,816 1,155,703 Common Stock (B) 3,867 shs. 06/27/08 132,841 119,555 ------------ ------------ 1,325,657 1,275,258 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 12 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ H M HOLDING COMPANY A designer, manufacturer, and importer of promotional and wood furniture. 12% Senior Subordinated Note due 2013 (D) $ 1,170,000 02/10/06 $ 1,084,725 $ -- Preferred Stock (B) 21 shs. * 21,428 -- Common Stock (B) 180 shs. 02/10/06 180,000 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 67 shs. 02/10/06 61,875 -- ------------ ------------ 1,348,028 -- ------------ ------------ HIGHGATE CAPITAL LLC An acquirer of controlling or substantial interests in manufacturing and marketing entities. Series A Preferred Units (B) 0.30% int. 07/21/94 91,867 -- ------------ ------------ HOME DeCOR HOLDING COMPANY A designer, manufacturer and marketer of framed art and wall decor products. 12.5% Senior Subordinated Note due 2012 $ 1,081,731 ** 1,010,598 1,029,620 Common Stock (B) 33 shs. ** 33,216 30,540 Warrant, exercisable until 2012, to purchase common stock at $.02 per share (B) 106 shs. ** 105,618 97,098 ------------ ------------ 1,149,432 1,157,258 ------------ ------------ HOSPITALITY MINTS HOLDING COMPANY A manufacturer of individually-wrapped imprinted promotional mints. 12% Senior Subordinated Note due 2016 $ 1,098,837 08/19/08 1,016,628 1,060,674 Common Stock (B) 251 shs. 08/19/08 251,163 238,602 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 65 shs. 08/19/08 60,233 1 ------------ ------------ 1,328,024 1,299,277 ------------ ------------ INSURANCE CLAIMS MANAGEMENT, INC. A third party administrator providing auto and property claim administration services for insurance companies. Common Stock (B) 37 shs. 02/27/07 1,100 58,496 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 11 shs. 02/27/07 324 17,232 ------------ ------------ 1,424 75,728 ------------ ------------ INTEGRATION TECHNOLOGY SYSTEMS, INC. A manufacturer of steel protective computer and network systems for the industrial and office environments. 12% Senior Secured Note due on demand $ 25,055 03/01/04 1 -- Common Stock (B) 130 shs. 06/01/00 149,500 -- ------------ ------------ 149,501 -- ------------ ------------ * 09/18/07 and 06/27/08. ** 06/30/04 and 08/19/04. -------------------------------------------------------------------------------------------------------------------------------- 13 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ JASON, INC. A diversified manufacturing company serving various industrial markets. 13% Senior Subordinated Note due 2010 $ 510,187 08/04/00 $ 489,260 $ 496,193 Limited Partnership Interest of Saw Mill Capital Fund II, L.P. (B) 1.30% int. 08/03/00 469,245 217,778 Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 26,931 shs. 08/04/00 61,101 43,736 ------------ ------------ 1,019,606 757,707 ------------ ------------ JUSTRITE MANUFACTURING ACQUISITION CO. A manufacturer of safety products such as storage cabinets and containers. 12% Senior Subordinated Note due 2011 $ 843,750 12/15/04 811,651 828,608 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 594 shs. 12/15/04 53,528 134,301 ------------ ------------ 865,179 962,909 ------------ ------------ K H O F HOLDINGS, INC. A manufacturer of premium disposable tableware products serving both the foodservice and consumer channels. 14% Senior Subordinated Note due 2014 $ 1,250,794 10/15/07 1,225,985 1,202,116 Common Stock (B) 116,827 shs. 10/15/07 116,827 110,986 ------------ ------------ 1,342,812 1,313,102 ------------ ------------ K N B HOLDINGS CORPORATION A designer, manufacturer and marketer of products for the custom framing market. 13.5% Senior Subordinated Note due 2013 $ 1,319,800 05/25/06 1,265,235 1,273,660 Common Stock (B) 71,053 shs. 05/25/06 71,053 56,160 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 43,600 shs. 05/25/06 37,871 34,461 ------------ ------------ 1,374,159 1,364,281 ------------ ------------ K P I HOLDINGS, INC. Pace Industries, a subsidiary of Leggett & Platt, is the largest player in the U.S. non-automotive, non-ferrous die casting segment. 13% Senior Subordinated Note due 2014 $ 1,115,217 07/16/08 1,042,077 1,074,407 Common Stock (B) 235 shs. 07/15/08 234,783 223,041 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 51 shs. 07/16/08 50,836 1 ------------ ------------ 1,327,696 1,297,449 ------------ ------------ K W P I HOLDINGS CORPORATION A manufacturer and distributor of vinyl windows and patio doors throughout the northwestern United States. 12% Senior Subordinated Note due 2014 $ 1,227,000 03/14/07 1,129,537 1,081,930 Common Stock (B) 123 shs. 03/13/07 123,000 55,798 Warrant, exercisable until 2017, to purchase common stock at $.01 per share (B) 89 shs. 03/14/07 85,890 40,374 ------------ ------------ 1,338,427 1,178,102 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 14 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ K-TEK HOLDING CORPORATION A manufacturer of instrumentation for liquid and bulk solids level detection for process and storage tanks. 14% Senior Secured Note due 2015 $ 1,169,454 12/20/07 $ 1,148,265 $ 1,107,567 Preferred Stock (B) 192,314 shs. 12/20/07 192,314 182,698 Common Stock (B) 54,326 shs. 12/20/07 543 543 ------------ ------------ 1,341,122 1,290,808 ------------ ------------ M V I HOLDING, INC. A manufacturer of large precision machined metal components used in equipment which services a variety of industries, including the oil & gas, mining, and defense markets. 13% Senior Subordinated Note due 2016 $ 642,857 09/12/08 595,286 616,118 Common Stock (B) 32 shs. 09/12/08 32,143 30,533 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 35 shs. 09/12/08 34,714 -- ------------ ------------ 662,143 646,651 ------------ ------------ MAIL COMMUNICATIONS GROUP, INC. A provider of mail processing and handling services, lettershop services, and commercial printing services. 12.5% Senior Subordinated Note due 2014 $ 516,177 05/04/07 483,072 502,385 Limited Liability Company Unit (B) 12,763 uts. * 166,481 222,064 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 1,787 shs. 05/04/07 22,781 31,091 ------------ ------------ 672,334 755,540 ------------ ------------ MAVERICK ACQUISITION COMPANY A manufacturer of capsules that cover the cork and neck of wine bottles. 7.19% Senior Secured Tranche A Note due 2010 (C) $ 210,124 09/03/04 210,124 207,666 12% Senior Secured Tranche B Note due 2011 $ 179,104 09/03/04 166,653 167,088 Limited Partnership Interest (B) 4.48% int. 09/03/04 33,582 18,944 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 243 shs. 09/03/04 22,556 13,688 ------------ ------------ 432,915 407,386 ------------ ------------ MEDSYSTEMS HOLDINGS LLC A manufacturer of enteral feeding products, such as feeding tubes and other products related to assisted feeding. 13% Senior Subordinated Note due 2015 $ 607,878 08/29/08 532,585 590,022 Preferred Unit (B) 66 uts. 08/29/08 66,451 63,128 Common Unit Class A (B) 671 uts. 08/29/08 671 637 Common Unit Class B (B) 250 uts. 08/29/08 63,564 3 ------------ ------------ 663,271 653,790 ------------ ------------ * 05/04/07 and 01/02/08. -------------------------------------------------------------------------------------------------------------------------------- 15 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ MEGTEC HOLDINGS, INC. A supplier of industrial and environmental products and services to a broad array of industries, including the printing, coating, converting, pharmaceutical, electronic, chemical, wood processing, and coal mining industries. 12% Senior Subordinated Note due 2016 $ 1,144,068 09/24/08 $ 1,048,910 $ 1,102,398 Preferred Stock (B) 56 shs. 09/24/08 54,040 1 Limited Partnership Interest (B) 205,932 int. 09/16/08 205,932 195,635 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 18 shs. 09/24/08 18,237 -- ------------ ------------ 1,327,119 1,298,034 ------------ ------------ MICROGROUP, INC. A manufacturer of precision parts and assemblies, and a value-added supplier of metal tubing and bars. 12% Senior Subordinated Note due 2013 $ 1,421,795 * 1,352,225 1,380,265 Common Stock (B) 238 shs. * 238,000 379,588 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 87 shs. * 86,281 138,454 ------------ ------------ 1,676,506 1,898,307 ------------ ------------ MILWAUKEE GEAR COMPANY A manufacturer of high-precision custom gears and gear drives used by original equipment manufacturers operating in a number of industries. 13% Senior Subordinated Note due 2014 $ 1,246,154 07/21/08 1,171,406 1,207,656 Preferred Stock (B) 139 shs. 07/21/08 138,374 131,459 Common Stock (B) 9 shs. 07/21/08 10,000 9,500 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 6 shs. 07/21/08 5,510 -- ------------ ------------ 1,325,290 1,348,615 ------------ ------------ MOMENTUM HOLDING CO. A designer and supplier of upholstery fabric to commercial furniture manufacturers and architectural and design firms. Limited Partnership Interest (B) 11.24% int. 08/04/06 56,198 122,296 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 586 shs. 08/04/06 56,705 127,480 ------------ ------------ 112,903 249,776 ------------ ------------ MONESSEN HOLDING CORPORATION A designer and manufacturer of a broad line of gas, wood, and electric hearth products and accessories. 14% Senior Subordinated Note due 2014 $ 1,439,663 07/25/08 1,344,852 1,295,696 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 81 shs. 03/31/06 73,125 -- ------------ ------------ 1,417,977 1,295,696 ------------ ------------ * 08/12/05 and 09/11/06. -------------------------------------------------------------------------------------------------------------------------------- 16 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ MORTON INDUSTRIAL GROUP, INC. A manufacturer of highly engineered metal fabricated components. 12% Senior Subordinated Note due 2014 (D) $ 1,292,246 08/25/06 $ 1,187,021 $ 1,163,021 30% Convertible Preferred Stock (B) 41,289 shs. 07/28/08 19,708 37,160 ------------ ------------ 1,206,729 1,200,181 ------------ ------------ NABCO, INC. A producer of explosive containment vessels in the United States. 14% Senior Subordinated Note due 2014 $ 403,451 02/24/06 353,614 201,725 Limited Liability Company Unit (B) 437 uts. * 436,984 -- Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 68 shs. 02/24/06 19,687 -- ------------ ------------ 810,285 201,725 ------------ ------------ NAVIS GLOBAL A designer, manufacturer, seller and servicer of finishing machinery for the knit and woven segments of the global textile industry. 12% Senior Subordinated Note due 2014 (D) $ 705,457 05/28/04 630,721 352,729 8.75% Senior Secured Note due 2011 (D) $ 327,478 05/28/04 327,478 311,104 Common Stock (B) 385,233 shs. 05/28/04 385,233 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 116,521 shs. 05/28/04 74,736 -- ------------ ------------ 1,418,168 663,833 ------------ ------------ NESCO HOLDINGS CORPORATION A sales and leasing company that provides equipment to the electric utility, telecommunications, and various other industries. 12% Senior Subordinated Note due 2015 $ 1,125,000 08/02/07 999,658 1,088,710 Common Stock (B) 225,000 shs. 08/02/07 225,000 235,324 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 63,191 shs. 08/02/07 102,842 66,090 ------------ ------------ 1,327,500 1,390,124 ------------ ------------ NETSHAPE TECHNOLOGIES, INC. A manufacturer of powder metal and metal injection molded precision components used in industrial, consumer, and other applications. 12% Senior Subordinated Note due 2014 $ 810,000 02/02/07 745,713 742,854 Limited Partnership Interest of Saw Mill PCG Partners LLC (B) 1.38% int. 02/01/07 540,000 202,661 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 48 shs. 02/02/07 48,087 18,048 ------------ ------------ 1,333,800 963,563 ------------ ------------ * 02/24/06 and 06/22/07. -------------------------------------------------------------------------------------------------------------------------------- 17 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ NYLONCRAFT, INC. A supplier of engineered plastic components for the automotive industry. 9% Senior Secured Note due 2009 $ 464,286 01/28/02 $ 464,286 $ 441,072 11.5% Senior Subordinated Note due 2012 $ 857,143 01/28/02 817,130 642,857 Common Stock (B) 178,571 shs. 01/28/02 178,571 -- Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 138,928 shs. 01/28/02 92,597 -- ------------ ------------ 1,552,584 1,083,929 ------------ ------------ OAKRIVER TECHNOLOGY, INC. Designs, engineers and assembles high precision automated process equipment for the medical device industry, with a focus on defibrillators and stents. 10% Senior Secured Note due 2012 $ 298,260 01/03/06 293,786 282,102 13% Senior Subordinated Note due 2013 $ 392,709 01/03/06 357,571 362,344 Common Stock (B) 184,176 shs. 01/03/06 184,176 -- Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 43,073 shs. 01/03/06 35,900 -- ------------ ------------ 871,433 644,446 ------------ ------------ OLYMPIC SALES, INC. A boat retailer in Washington state, Oregon, California and British Columbia. 12% Senior Subordinated Note due 2008 (D) $ 511,000 08/07/98 511,000 102,200 12% Senior Subordinated Note due 2008 (D) $ 244,154 02/09/00 213,313 48,831 Limited Partnership Interest of Riverside VIII, VIII-A and VIII-B Holding Company, L.P. 10.66% int. * 808,386 -- Warrants, exercisable until 2008, to purchase common stock at $.01 per share (B) 15,166 shs. ** 206,041 -- ------------ ------------ 1,738,740 151,031 ------------ ------------ ONTARIO DRIVE & GEAR LTD. A manufacturer of all-wheel drive, off-road amphibious vehicles and related accessories. Limited Liability Company Unit (B) 1,942 uts. 01/17/06 302,885 596,733 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 328 shs. 01/17/06 90,424 100,751 ------------ ------------ 393,309 697,484 ------------ ------------ P A S HOLDCO LLC An independent provider of maintenance, repair and overhaul services to the aerospace gas turbine engine and airframe markets. 14% Senior Subordinated Note due 2014 $ 1,194,205 07/03/06 1,141,182 1,137,482 Preferred Unit (B) 202 uts. 07/03/06 202,320 179,862 Preferred Unit (B) 36 uts. 07/03/06 36,420 32,377 Common Unit Class I (B) 78 uts. 07/03/06 -- -- Common Unit Class L (B) 17 uts. 07/03/06 -- -- ------------ ------------ 1,379,922 1,349,721 ------------ ------------ * 08/07/98, 02/23/99, 12/22/99 and 02/25/03. ** 08/07/98 and 02/29/00. -------------------------------------------------------------------------------------------------------------------------------- 18 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ P I I HOLDING CORPORATION A manufacturer of plastic film and bags for the general industrial, medical, and food industries. 12% Senior Subordinated Note due 2013 $ 1,215,000 03/31/06 $ 1,147,616 $ 1,207,586 Preferred Stock (B) 19 shs. 03/31/06 174,492 207,361 Common Stock (B) 12 shs. 03/31/06 13,500 42,082 Warrant, exercisable until 2013, to purchase common stock at $.01 per share (B) 7 shs. 03/31/06 5,888 24,487 ------------ ------------ 1,341,496 1,481,516 ------------ ------------ PACIFIC CONSOLIDATED HOLDINGS LLC A manufacturer of rugged, mobile liquid and gaseous oxygen and nitrogen generating systems used in the global defense, oil & gas, and medical sectors. 12% Senior Subordinated Note due 2012 $ 690,683 04/27/07 638,586 632,592 Limited Liability Company Unit (B) 928,962 uts. 04/27/07 33,477 -- ------------ ------------ 672,063 632,592 ------------ ------------ PARADIGM PACKAGING, INC. A manufacturer of plastic bottles and closures for the nutritional, pharmaceutical, personal care, and food packaging markets. 12% Senior Subordinated Note due 2011 $ 1,125,000 12/19/00 1,063,885 1,072,274 Membership Interests of MM/Lincap PPI Investments, Inc., LLC (B) 1.28% int. 12/21/00 140,625 -- ------------ ------------ 1,204,510 1,072,274 ------------ ------------ POSTLE ALUMINUM COMPANY LLC A manufacturer and distributor of aluminum extruded products. 12% Senior Subordinated Note due 2014 $ 1,080,000 10/02/06 1,008,327 990,169 Limited Liability Company Unit 733 uts. 10/02/06 270,000 143,198 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 182 shs. 10/02/06 65,988 35,616 ------------ ------------ 1,344,315 1,168,983 ------------ ------------ POWER SERVICES HOLDING COMPANY A provider of industrial motor repair services, predictive and preventative maintenance, and performance improvement consulting, serving the petrochemical, mining, power generation, metals, and paper industries. 12% Senior Subordinated Note due 2016 $ 1,255,814 02/11/08 1,145,918 1,199,108 Limited Partnership Interest (B) 94,092 int. 02/11/08 94,092 89,387 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 700 shs. 02/11/08 88,723 7 ------------ ------------ 1,328,733 1,288,502 ------------ ------------ PROTEIN GENETICS, INC. A producer of bovine artificial insemination products, related breeding and healthcare products and specialty genetics sold to the dairy and beef industries. 9.8% Redeemable Exchangeable Preferred Stock (B) 332 shs. 08/12/94 33,217 -- Common Stock (B) 867 shs. * 42,365 -- ------------ ------------ 75,582 -- ------------ ------------ * 08/12/94 and 11/14/01. -------------------------------------------------------------------------------------------------------------------------------- 19 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ QUALIS AUTOMOTIVE LLC A distributor of aftermarket automotive brake and chassis products. 12% Senior Subordinated Note due 2012 $ 937,500 05/28/04 $ 831,176 $ 912,633 Common Stock 187,500 shs. 05/28/04 187,500 53,976 Warrant, exercisable until 2012, to purchase common stock at $.01 per share 199,969 shs. 05/28/04 199,969 57,565 ------------ ------------ 1,218,645 1,024,174 ------------ ------------ QUALSERV CORPORATION A provider of foodservice equipment and supplies to major restaurant chains and their franchisees. Limited Partnership Interest (B) 4.90% int. 07/09/04 1 -- ------------ ------------ R A J MANUFACTURING HOLDINGS LLC A designer and manufacturer of women's swimwear sold under a variety of licensed brand names. 12.5% Senior Subordinated Note due 2014 $ 1,200,277 12/15/06 1,106,663 1,154,704 Limited Liability Company Unit (B) 1,497 uts. 12/15/06 149,723 102,150 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 2 shs. 12/15/06 69,609 48,204 ------------ ------------ 1,325,995 1,305,058 ------------ ------------ R E I DELAWARE HOLDING, INC. An engineer and manufacturer of highly complex, close tolerance components, assemblies, tooling and custom automation equipment primarily for aerospace, medical and defense/radar markets. 12% Senior Subordinated Note due 2016 $ 1,350,000 01/18/08 1,306,541 1,278,304 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 3 shs. 01/18/08 16,459 -- ------------ ------------ 1,323,000 1,278,304 ------------ ------------ RADIAC ABRASIVES, INC. A manufacturer of bonded abrasive and super abrasive grinding wheels in the United States. 12% Senior Subordinated Note due 2014 $ 1,196,809 02/10/06 1,123,436 1,215,066 Common Stock (B) 153,191 shs. 02/10/06 153,191 226,102 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 69,647 shs. 02/10/06 63,421 102,795 ------------ ------------ 1,340,048 1,543,963 ------------ ------------ ROYAL BATHS MANUFACTURING COMPANY A manufacturer and distributor of acrylic and cultured marble bathroom products. 12.5% Senior Subordinated Note due 2011 $ 562,500 11/14/03 528,627 526,334 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 74 shs. 11/14/03 65,089 27,343 ------------ ------------ 593,716 553,677 ------------ ------------ SAFETY SPEED CUT MANUFACTURING COMPANY, INC. A manufacturer of vertical panel saws and routers for the wood working industry. Class B Common Stock (B) 846 shs. 06/02/99 146,456 510,588 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 20 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ SAVAGE SPORTS HOLDING, INC. A manufacturer of sporting firearms. 12% Senior Subordinated Note due 2012 $ 814,655 09/10/04 $ 775,956 $ 777,007 Common Stock (B) 324 shs. * 340,378 301,311 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 71 shs. 09/10/04 60,129 65,786 ------------ ------------ 1,176,463 1,144,104 ------------ ------------ SMART SOURCE HOLDINGS LLC A short-term computer rental company. 12% Senior Subordinated Note due 2015 $ 1,176,924 ** 1,072,771 1,141,278 Limited Liability Company Unit (B) 328 uts. ** 337,796 355,379 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 83 shs. ** 87,231 90,018 ------------ ------------ 1,497,798 1,586,675 ------------ ------------ SPECIALTY FOODS GROUP, INC. A manufacturer and distributor of branded meat products. Limited Partnership Interest of MHD Holdings LLC (B) 0.76% int. 08/29/00 363,576 -- ------------ ------------ STANTON CARPET HOLDING CO. A designer and marketer of high and mid-priced decorative carpets and rugs. 12.13% Senior Subordinated Note due 2014 $ 1,185,366 08/01/06 1,120,766 1,130,571 Common Stock (B) 165 shs. 08/01/06 164,634 223,041 Warrant, exercisable until 2014, to purchase common stock at $.02 per share (B) 55 shs. 08/01/06 49,390 74,284 ------------ ------------ 1,334,790 1,427,896 ------------ ------------ SYNTERACT HOLDINGS CORPORATION A provider of outsourced clinical trial management services to pharmaceutical and biotechnology companies. 14% Senior Subordinated Note due 2016 $ 1,350,000 09/02/08 1,256,872 1,313,901 Warrant, exercisable until 2018, to purchase preferred stock at $.01 per share (B) 678 shs. 09/02/08 6,629 7 Warrant, exercisable until 2018, to purchase common stock at $.01 per share (B) 6,778 shs. 09/02/08 59,661 68 ------------ ------------ 1,323,162 1,313,976 ------------ ------------ T H I ACQUISITION, INC. A machine servicing company providing value-added steel services to long steel products. 12% Senior Subordinated Note due 2016 $ 1,350,000 01/14/08 1,276,383 1,277,387 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 5 shs. 01/14/08 46,617 -- ------------ ------------ 1,323,000 1,277,387 ------------ ------------ * 09/10/04 and 10/05/07. ** 08/31/07 and 03/06/08. -------------------------------------------------------------------------------------------------------------------------------- 21 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ TANGENT RAIL CORPORATION A manufacturer of rail ties and provider of specialty services to the North American railroad industry. 13% Senior Subordinated Note due 2015 $ 1,173,909 10/14/05 $ 1,033,473 $ 1,158,385 Common Stock 1,167 shs. 10/14/05 1,167 563,902 Warrant, exercisable until 2015, to purchase common stock at $.01 per share 631 shs. 09/30/08 300,683 304,903 ------------ ------------ 1,335,323 2,027,190 ------------ ------------ TERRA RENEWAL LLC A provider of wastewater residual management and required environmental reporting, permitting, nutrient management planning and record keeping to companies involved in poultry and food processing. 6.74% Senior Secured Tranche B Note due 2012 (C) $ 14,838 * 14,747 14,587 7.05% Senior Secured Tranche B Note due 2012 (C) $ 851,552 * 848,436 837,152 8.25% Senior Secured Tranche B Note due 2012 (C) $ 824 09/30/08 819 810 12% Senior Subordinated Note due 2014 $ 664,062 ** 635,312 646,985 Limited Partnership Interest of Saw Mill Capital Fund V, L.P. (B) 2.27% int. 03/01/05 66,448 456,735 Warrant, exercisable until 2016, to purchase common stock at $.01 per share (B) 41 shs. 04/28/06 33,738 79,403 ------------ ------------ 1,599,500 2,035,672 ------------ ------------ TORRENT GROUP HOLDINGS, INC. A contractor specializing in the sales and installation of engineered drywells for the retention and filtration of stormwater and nuisance water flow. 12.5% Senior Subordinated Note due 2013 $ 1,185,366 10/26/07 1,113,016 1,131,248 Series A Preferred Stock (B) 219 shs. 10/26/07 219,203 156,401 ------------ ------------ 1,332,219 1,287,649 ------------ ------------ TOTAL E & S, INC. A manufacturer of a wide variety of equipment used in the oil and gas industry. 10.5% Senior Secured Term Note due 2013 $ 486,487 03/02/07 479,190 475,966 13% Senior Subordinated Note due 2014 $ 341,971 03/02/07 280,347 331,252 Common Stock (B) 71,542 shs. 03/02/07 71,542 71,453 Warrant, exercisable until 2014 to purchase common stock at $.01 per share (B) 19,733 shs. 03/02/07 54,784 19,709 ------------ ------------ 885,863 898,380 ------------ ------------ TRANSPAC HOLDING COMPANY A designer, importer, and wholesaler of home decor and seasonal gift products. 12% Senior Subordinated Note due 2015 $ 938,651 10/31/07 876,491 871,275 Common Stock (B) 110 shs. 10/31/07 110,430 104,909 Warrant, exercisable until 2015, to purchase common stock at $.01 per share (B) 50 shs. 10/31/07 46,380 1 ------------ ------------ 1,033,301 976,185 ------------ ------------ * 04/28/06 and 12/21/06. ** 04/28/06 and 09/13/06. -------------------------------------------------------------------------------------------------------------------------------- 22 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ TRANSTAR HOLDING COMPANY A distributor of aftermarket automotive transmission parts. 12% Senior Subordinated Note due 2014 $ 918,000 08/31/05 $ 885,837 $ 887,519 Common Stock (B) 571 shs. * 570,944 634,146 Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 46 shs. 08/31/05 41,021 50,537 ------------ ------------ 1,497,802 1,572,202 ------------ ------------ TRANZONIC COMPANIES (THE) A producer of commercial and industrial supplies, such as safety products, janitorial supplies, work apparel, washroom and restroom supplies and sanitary care products. 13% Senior Subordinated Note due 2010 $ 1,356,000 02/05/98 1,301,348 1,356,000 Common Stock (B) 315 shs. 02/04/98 315,000 434,759 Warrant, exercisable until 2009, to purchase common stock at $.01 per share (B) 222 shs. 02/05/98 184,416 306,402 ------------ ------------ 1,800,764 2,097,161 ------------ ------------ TRUCK BODIES & EQUIPMENT INTERNATIONAL A designer and manufacturer of accessories for heavy and medium duty trucks, primarily dump bodies, hoists, various forms of flat-bed bodies, landscape bodies and other accessories. 12% Senior Subordinated Note due 2013 (D) $ 1,222,698 ** 1,133,973 611,349 Common Stock (B) 393 shs. ** 423,985 -- Warrant, exercisable until 2013, to purchase common stock at $.02 per share (B) 81 shs. ** 84,650 -- ------------ ------------ 1,642,608 611,349 ------------ ------------ TRUSTILE DOORS, INC. A manufacturer and distributor of interior doors. Warrant, exercisable until 2010, to purchase common stock at $.01 per share (B) 3,060 shs. 04/11/03 37,821 160,620 ------------ ------------ U M A ENTERPRISES, INC. An importer and wholesaler of home decor products. 15% Senior Subordinated Note due 2015 $ 890,956 02/08/08 873,251 853,498 Convertible Preferred Stock (B) 470 shs. 02/08/08 469,565 446,082 ------------ ------------ 1,342,816 1,299,580 ------------ ------------ U-LINE CORPORATION A manufacturer of high-end, built-in, undercounter ice making, wine storage and refrigeration appliances. 12.5% Senior Subordinated Note due 2012 $ 996,500 04/30/04 928,727 955,233 Common Stock (B) 96 shs. 04/30/04 96,400 54,455 Warrant, exercisable until 2012, to purchase common stock at $.01 per share (B) 122 shs. 04/30/04 112,106 68,916 ------------ ------------ 1,137,233 1,078,604 ------------ ------------ * 08/31/05 and 04/30/07. ** 07/19/05 and 12/22/05. -------------------------------------------------------------------------------------------------------------------------------- 23 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ VICTORY VENTURES LLC An acquirer of controlling or substantial interests in other entities. Series A Preferred Units (B) 1 ut. 12/02/96 $ 236 $ -- ------------ ------------ VISIONEERING, INC. A designer and manufacturer of tooling and fixtures for the aerospace industry. 10.5% Senior Secured Term Loan due 2013 $ 458,824 05/17/07 451,941 447,027 13% Senior Subordinated Note due 2014 $ 370,588 05/17/07 335,429 356,127 Common Stock (B) 70,588 shs. 05/17/07 70,588 55,964 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 20,003 shs. 05/17/07 31,460 15,859 ------------ ------------ 889,418 874,977 ------------ ------------ VITALITY FOODSERVICE, INC. A non-carbonated beverage dispensing company focused on the foodservice industry. 13% Senior Subordinated Note due 2011 $ 999,153 09/24/04 944,101 920,613 Common Stock (B) 14,006 shs. * 140,064 131,766 Warrant, exercisable until 2011, to purchase common stock at $.01 per share (B) 12,593 shs. 09/24/04 98,938 118,472 ------------ ------------ 1,183,103 1,170,851 ------------ ------------ VITEX PACKAGING GROUP, INC. A manufacturer of specialty packaging, primarily envelopes and tags used on tea bags. 12.5% Senior Subordinated Note due 2012 $ 900,000 07/19/04 785,152 450,000 14.5% PIK Note due 2010 $ 181,280 06/30/07 163,152 90,640 Limited Liability Company Unit Class A (B) 219,375 uts. 07/19/04 219,375 -- Limited Liability Company Unit Class B (B) 96,848 uts. 07/19/04 96,848 -- ------------ ------------ 1,264,527 540,640 ------------ ------------ WAGGIN' TRAIN HOLDINGS LLC A producer of premium quality meat dog treats. 14% Senior Subordinated Note due 2014 $ 1,140,441 11/15/07 1,117,595 1,053,394 Limited Liability Company Unit Class B (B) 224 uts. 11/15/07 223,757 201,384 Limited Liability Company Unit Class C (B) 224 uts. 11/15/07 -- 2 ------------ ------------ 1,341,352 1,254,780 ------------ ------------ WALLS INDUSTRIES, INC. A provider of branded workwear and sporting goods apparel. Limited Partnership Interest (B) 0.20% int. 07/12/04 1,974 -- Common Stock (B) 2,133 shs. 12/21/07 -- -- ------------ ------------ 1,974 -- ------------ ------------ * 09/24/04 and 12/22/06. -------------------------------------------------------------------------------------------------------------------------------- 24 CONSOLIDATED SCHEDULE OF INVESTMENTS (CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Principal Amount Shares, Units or Ownership Acquisition CORPORATE RESTRICTED SECURITIES:(A)(Continued) Percentage Date Cost Fair Value ------------ -------- ------------ ------------ WELLBORN FOREST HOLDING CO. A manufacturer of semi-custom kitchen and bath cabinetry. 12.13% Senior Subordinated Note due 2014 $ 911,250 11/30/06 $ 853,861 $ 848,850 Common Stock (B) 101 shs. 11/30/06 101,250 63,242 Warrant, exercisable until 2014, to purchase common stock at $.01 per share (B) 51 shs. 11/30/06 45,790 31,574 ------------ ------------ 1,000,901 943,666 ------------ ------------ WORKPLACE MEDIA HOLDING CO. A direct marketer specializing in providing advertisers with access to consumers in the workplace. 13% Senior Subordinated Note due 2015 $ 613,692 05/14/07 561,543 552,323 Limited Partnership Interest (B) 12.26% int. 05/14/07 61,308 -- Warrant, exercisable until 2015, to purchase common stock at $.02 per share (B) 47 shs. 05/14/07 44,186 -- ------------ ------------ 667,037 552,323 ------------ ------------ XALOY SUPERIOR HOLDINGS, INC. A provider of melt processing components and ancillary equipment for both plastic injection molding and extrusion applications. 15% Senior Subordinated Note due 2015 $ 1,200,000 09/08/08 1,176,000 1,160,867 Common Stock (B) 150 shs. 09/08/08 150,000 142,500 ------------ ------------ 1,326,000 1,303,367 ------------ ------------ TOTAL PRIVATE PLACEMENT INVESTMENTS (E) 105,220,680 97,551,620 ------------ ------------ -------------------------------------------------------------------------------------------------------------------------------- 25 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 (Unaudited) Shares or Interest Due Principal CORPORATE RESTRICTED SECURITIES: (A) (Continued) Rate Date Amount Cost Fair Value ------- -------- ------------ ------------ ------------ RULE 144A SECURITIES - 3.52%: BONDS - 3.52% Cenveo Corporation 10.500% 08/15/16 $ 45,000 $ 45,000 $ 41,850 Charter Communications Op LLC 8.000 04/30/12 750,000 736,875 671,250 Compucom Systems, Inc. 12.500 10/01/15 670,000 648,852 601,325 Douglas Dynamics LLC 7.750 01/15/12 485,000 462,116 397,700 G F S I, Inc. (C) 10.500 06/01/11 375,000 360,505 337,500 Intergen NV 9.000 06/30/17 375,000 371,959 375,000 Nortek, Inc. 10.000 12/01/13 100,000 98,957 89,000 Packaging Dynamics Corporation of America 10.000 05/01/16 975,000 969,813 633,750 Ryerson, Inc. 12.000 11/01/15 30,000 30,000 25,500 Ticketmaster 10.750 08/01/16 250,000 250,000 235,000 TRW Automotive, Inc. 7.250 03/15/17 500,000 440,000 395,000 Tunica-Biloxi Gaming Authority 9.000 11/15/15 540,000 556,374 496,800 ------------ ------------ TOTAL BONDS 4,970,451 4,299,675 ------------ ------------ CONVERTIBLE PREFERRED STOCK - 0.00% ETEX Corporation (B) 194 179 -- ------------ ------------ TOTAL CONVERTIBLE PREFERRED STOCK 179 -- ------------ ------------ PREFERRED STOCK - 0.00% TherOX, Inc. (B) 26 1,032 -- ------------ ------------ TOTAL PREFERRED STOCK 1,032 -- ------------ ------------ COMMON STOCK - 0.00% Touchstone Health Partnership (B) 292 1,062 -- ------------ ------------ TOTAL COMMON STOCK 1,062 -- ------------ ------------ TOTAL RULE 144A SECURITIES 4,972,724 4,299,675 ------------ ------------ TOTAL CORPORATE RESTRICTED SECURITIES $110,193,404 $101,851,295 ------------ ------------ ---------------------------------------------------------------------------------------------------------------- 26 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Interest Due Principal Market CORPORATE PUBLIC SECURITIES - 15.95%: (A) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ BONDS - 14.64% Appleton Papers, Inc. 8.125% 06/15/11 $ 250,000 $ 250,000 $ 219,375 Aramark Corporation (C) 6.301 02/01/15 100,000 100,000 87,500 Boyd Gaming Corporation 7.125 02/01/16 150,000 146,625 103,875 C R H America, Inc. 5.300 10/15/13 500,000 418,430 455,690 Cincinnati Bell, Inc. 8.375 01/15/14 550,000 503,750 478,500 Clayton Williams Energy, Inc. 7.750 08/01/13 375,000 357,000 328,125 Countrywide Alternative Loan Trust (C) 3.508 11/20/35 979,837 719,706 625,875 Electronic Data Systems Corporation 7.125 10/15/09 500,000 501,538 508,060 Ford Motor Credit Co. 7.375 10/28/09 525,000 523,688 422,082 Gencorp, Inc. 9.500 08/15/13 130,000 130,000 128,050 General Motors Acceptance Corporation 5.850 01/14/09 750,000 740,604 641,003 Goodyear Tire & Rubber Co. 9.000 07/01/15 64,000 65,196 63,360 Hughes Network Systems 9.500 04/15/14 525,000 534,876 509,250 Indymac INDX Mortgage Loan Trust 3.417 11/25/36 998,668 716,884 614,962 Inergy LP 8.250 03/01/16 75,000 75,000 69,000 Intelsat Bermuda Ltd 9.250 06/15/16 690,000 715,887 641,700 Interline Brands, Inc. 8.125 06/15/14 830,000 824,237 821,700 Iron Mountain, Inc. 8.750 07/15/18 500,000 514,119 507,500 Majestic Star Casino LLC 9.500 10/15/10 250,000 250,000 112,500 Manitowoc Company, Inc. 7.125 11/01/13 100,000 100,000 93,000 Mariner Energy, Inc. 8.000 05/15/17 400,000 402,494 338,000 Mediacom Broadband LLC 8.500 10/15/15 750,000 765,191 618,750 Neiman Marcus Group, Inc. 10.375 10/15/15 600,000 600,000 502,500 NOVA Chemicals Corporation (C) 5.953 11/15/13 515,000 511,538 427,450 O E D Corp/Diamond Jo Company Guarantee 8.750 04/15/12 500,000 492,980 455,000 Petrohawk Energy Corporation 9.125 07/15/13 750,000 761,460 705,000 Pliant Corporation (C) 11.850 06/15/09 809,482 817,343 696,154 Quebecor Media, Inc. 7.750 03/15/16 575,000 551,385 503,125 Quicksilver Resources, Inc. 7.125 04/01/16 600,000 583,125 489,000 Range Resources Corporation 7.250 05/01/18 25,000 25,000 23,625 Rental Service Corporation 9.500 12/01/14 500,000 506,308 378,750 Rogers Wireless, Inc. 7.500 03/15/15 560,000 591,888 569,233 Sheridan Acquisition Corporation 10.250 08/15/11 225,000 222,001 200,250 Steel Dynamics, Inc. 6.750 04/01/15 100,000 100,000 86,000 Stewart & Stevenson LLC 10.000 07/15/14 750,000 770,765 656,250 Tenneco, Inc. 8.625 11/15/14 500,000 501,092 397,500 ---------------------------------------------------------------------------------------------------------------- 27 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 (Unaudited) Interest Due Principal Market CORPORATE PUBLIC SECURITIES:(A)(Continued) Rate Date Amount Cost Value ------- -------- ------------ ------------ ------------ Tenneco, Inc. 8.125% 11/15/15 $ 50,000 $ 50,000 $ 42,750 Tesoro Petroleum Corporation 6.500 06/01/17 250,000 250,000 200,000 Texas Industries, Inc. 7.250 07/15/13 35,000 35,000 30,450 Titan International, Inc. 8.000 01/15/12 70,000 70,000 67,900 Transdigm, Inc. 7.750 07/15/14 150,000 151,259 141,000 Tube City IMS Corporation 9.750 02/01/15 1,000,000 991,246 890,000 United Components, Inc. 9.375 06/15/13 535,000 535,765 444,050 United Rentals, Inc. 7.750 11/15/13 325,000 325,000 247,813 Virgin Media Finance PLC 9.125 08/15/16 790,000 813,009 661,625 Vought Aircraft Industries 8.000 07/15/11 650,000 647,991 565,500 Warner Music Group Corporation 7.375 04/15/14 125,000 125,000 92,813 ------------ ------------ TOTAL BONDS 20,384,380 17,861,595 ------------ ------------ COMMON STOCK - 1.15% CKX, Inc. (B) 52,500 422,625 323,400 Directed Electronics, Inc. (B) 195,118 982,868 195,118 Distributed Energy Systems Corporation (B) 14,000 177,078 210 El Paso Corporation (B) 35,000 435,272 446,600 EnerNOC, Inc. (B) 23,500 648,410 242,990 ITC^DeltaCom, Inc. (B) 94,588 827,645 184,447 Intrepid Potash, Inc. (B) 185 5,920 5,498 ------------ ------------ TOTAL COMMON STOCK 3,499,818 1,398,263 ------------ ------------ CONVERTIBLE BONDS - 0.16% Citadel Broadcasting Corporation 4.000% 02/15/11 250,000 194,063 193,438 ------------ ------------ TOTAL CONVERTIBLE BONDS 194,063 193,438 ------------ ------------ TOTAL CORPORATE PUBLIC SECURITIES $ 24,078,261 $ 19,453,296 ------------ ------------ ---------------------------------------------------------------------------------------------------------------- 28 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Interest Due Principal Market SHORT-TERM SECURITIES: Rate/Yield* Date Amount Cost Value ------- -------- ------------ ------------ ------------ COMMERCIAL PAPER - 8.30% Clorox Company 6.007 % 10/01/08 $ 832,000 $ 832,000 $ 832,000 Computer Sciences Corporation 5.506 10/02/08 2,503,000 2,502,618 2,502,618 Dominion Resources, Inc. 6.087 10/03/08 2,536,000 2,535,143 2,535,143 Duke Energy Carolinas LLC 6.007 10/06/08 1,753,000 1,751,539 1,751,539 Textron, Inc. 6.007 10/07/08 2,509,000 2,506,491 2,506,491 ------------ ------------ TOTAL SHORT-TERM SECURITIES $ 10,127,791 $ 10,127,791 ------------ ------------ TOTAL INVESTMENTS 107.75% $144,399,456 $131,432,382 ============ ------------ Other Assets 3.34 4,070,905 Liabilities (11.09) (13,529,823) ------ ------------ TOTAL NET ASSETS 100.00% $121,973,464 ====== ============ (A) In each of the convertible note, warrant, and common stock investments, the issuer has agreed to provide certain registration rights. (B) Non-income producing security. (C) Variable rate security; rate indicated is as of 09/30/08. (D) Defaulted security; interest not accrued. (E) Illiquid security. At September 30, 2008, the values of these securities amounted to $97,551,620 or 79.98% of net assets. * Effective yield at purchase PIK - Payment-in-kind ---------------------------------------------------------------------------------------------------------------- 29 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION: Market Value Market Value -------------- -------------- AEROSPACE - 2.92% BUILDINGS & REAL ESTATE - 1.12% Gencorp, Inc. $ 128,050 K W P I Holdings Corporation $ 1,178,102 Hughes Network Systems 509,250 Texas Industries, Inc. 30,450 P A S Holdco LLC 1,349,721 TruStile Doors, Inc. 160,620 Transdigm, Inc. 141,000 -------------- Visioneering, Inc. 874,977 1,369,172 Vought Aircraft Industries 565,500 -------------- -------------- CHEMICAL, PLASTICS & RUBBER - 0.58% 3,568,498 Capital Specialty Plastics, Inc. 279,466 -------------- NOVA Chemicals Corporation 427,450 AUTOMOBILE - 5.87% -------------- Fuel Systems Holding Corporation 618,750 706,916 Goodyear Tire & Rubber Co. 63,360 -------------- Jason, Inc. 757,707 CONSUMER PRODUCTS - 7.42% Nyloncraft, Inc. 1,083,929 Aero Holdings, Inc. 1,829,803 Ontario Drive & Gear Ltd. 697,484 Bravo Sports Holding Corporation 1,312,159 Qualis Automotive LLC 1,024,174 G F S I, Inc. 337,500 Tenneco, Inc. 440,250 K N B Holdings Corporation 1,364,281 Titan International, Inc. 67,900 Momentum Holding Co. 249,776 Transtar Holding Company 1,572,202 R A J Manufacturing Holdings LLC 1,305,058 TRW Automotive, Inc. 395,000 Royal Baths Manufacturing Company 553,677 United Components, Inc. 444,050 The Tranzonic Companies 2,097,161 -------------- Walls Industries, Inc. -- 7,164,806 -------------- -------------- 9,049,415 BEVERAGE, DRUG & FOOD - 2.84% -------------- Aramark Corporation 87,500 CONTAINERS, PACKAGING & GLASS - 4.58% Golden County Foods Holding, Inc. 912,026 Flutes, Inc. 760,272 Hospitality Mints Holding Company 1,299,277 Maverick Acquisition Company 407,386 Specialty Foods Group, Inc. -- P I I Holding Corporation 1,481,516 Vitality Foodservice, Inc. 1,170,851 Packaging Dynamics Corporation of America 633,750 -------------- Paradigm Packaging, Inc. 1,072,274 3,469,654 Pliant Corporation 696,154 -------------- Vitex Packaging Group, Inc. 540,640 BROADCASTING & ENTERTAINMENT - 2.48% -------------- Charter Communications Op LLC 671,250 5,591,992 Citadel Broadcasting Corporation 193,438 -------------- CKX, Inc. 323,400 DISTRIBUTION - 0.71% Mediacom Broadband LLC 618,750 Duncan Systems, Inc. 863,352 Virgin Media Finance PLC 661,625 QualServ Corporation -- Workplace Media Holding Co. 552,323 -------------- -------------- 863,352 3,020,786 -------------- -------------- ------------------------------------------------------------------------------------------------------------------------------------ 30 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION:(Continued) Market Value Market Value -------------- -------------- DIVERSIFIED/CONGLOMERATE, FARMING & AGRICULTURE - 1.03% MANUFACTURING - 10.32% Protein Genetics, Inc. $ -- A H C Holdings Company, Inc. $ 1,291,167 Waggin' Train Holdings LLC 1,254,780 Arrow Tru-Line Holdings, Inc. 828,882 -------------- C D N T, Inc. 874,696 1,254,780 Douglas Dynamics LLC 397,700 -------------- Evans Consoles, Inc. 541,417 FINANCIAL SERVICES - 0.87% K P I Holdings, Inc. 1,297,449 Ford Motor Credit Co. 422,082 MEGTEC Holdings, Inc. 1,298,034 General Motors Acceptance Corporation 641,003 Milwaukee Gear Company 1,348,615 Highgate Capital LLC -- Nortek, Inc. 89,000 Victory Ventures LLC -- Postle Aluminum Company LLC 1,168,983 -------------- Radiac Abrasives, Inc. 1,543,963 1,063,085 Truck Bodies & Equipment International 611,349 -------------- Xaloy Superior Holdings, Inc. 1,303,367 HEALTHCARE, EDUCATION & CHILDCARE - 4.76% -------------- A T I Acquisition Company 1,451,691 12,594,622 American Hospice Management Holding LLC 1,826,189 -------------- F H S Holdings LLC 1,208,170 DIVERSIFIED/CONGLOMERATE, SERVICE - 9.12% Synteract Holdings Corporation 1,313,976 A W X Holdings Corporation 868,355 Touchstone Health Partnership -- Advanced Technologies Holdings 1,321,819 -------------- C R H America, Inc. 455,690 5,800,026 CapeSuccess LLC -- -------------- Crane Rental Corporation 1,309,986 HOME & OFFICE FURNISHINGS, HOUSEWARES, Diversco, Inc./DHI Holdings, Inc. 633,325 AND DURABLE CONSUMER PRODUCTS - 9.38% Dwyer Group, Inc. 769,804 Connor Sport Court International, Inc. 984,753 Fowler Holding, Inc. 939,131 H M Holding Company -- GQ Holdings LLC 1,275,258 Home Decor Holding Company 1,157,258 Insurance Claims Management, Inc. 75,728 Justrite Manufacturing Acquisition Co. 962,909 Interline Brands, Inc. 821,700 K H O F Holdings, Inc. 1,313,102 Iron Mountain, Inc. 507,500 Monessen Holding Corporation 1,295,696 Mail Communications Group, Inc. 755,540 Stanton Carpet Holding Co. 1,427,896 Nesco Holdings Corporation 1,390,124 Transpac Holdings Company 976,185 -------------- U M A Enterprises, Inc. 1,299,580 11,123,960 U-Line Corporation 1,078,604 -------------- Wellborn Forest Holding Co. 943,666 ELECTRONICS - 1.46% -------------- Connecticut Electric, Inc. 1,073,724 11,439,649 Directed Electronics, Inc. 195,118 -------------- Distributed Energy Systems Corporation 210 Electronic Data Systems Corporation 508,060 -------------- 1,777,112 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 31 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION:(Continued) Market Value Market Value -------------- -------------- LEISURE, AMUSEMENT, ENTERTAINMENT - 2.81% MINING, STEEL, IRON & NON PRECIOUS Boyd Gaming Corporation $ 103,875 METALS - 1.87% Electra Bicycle Company LLC 791,224 Ryerson, Inc. $ 25,500 Majestic Star Casino LLC 112,500 Steel Dynamics, Inc. 86,000 O E D Corp/Diamond Jo Company Guarantee 455,000 T H I Acquisition, Inc. 1,277,387 Savage Sports Holding, Inc. 1,144,104 Tube City IMS Corporation 890,000 Ticketmaster 235,000 -------------- Tunica-Biloxi Gaming Authority 496,800 2,278,887 Warner Music Group Corporation 92,813 -------------- -------------- MORTGAGE-BACKED SECURITIES - 1.02% 3,431,316 Countrywide Alternative Loan Trust 625,875 -------------- Indymac INDX Mortgage Loan Trust 614,962 MACHINERY - 10.08% -------------- Davis-Standard LLC 1,785,356 1,240,837 E S P Holdco, Inc. 1,283,785 -------------- Integration Technology Systems, Inc. -- NATURAL RESOURCES - 0.24% K-Tek Holdings Corporation 1,290,808 Appleton Papers, Inc. 219,375 M V I Holding, Inc. 646,651 Cenveo Corporation 41,850 Manitowoc Company, Inc. 93,000 Intrepid Potash, Inc. 5,498 Morton Industrial Group, Inc. 1,200,181 Range Resources Corporation 23,625 Navis Global 663,833 -------------- NetShape Technologies, Inc. 963,563 290,348 Pacific Consolidated Holdings LLC 632,592 -------------- Power Services Holding Company 1,288,502 OIL & GAS - 1.85% R E I Delaware Holding, Inc. 1,278,304 Clayton Williams Energy, Inc. 328,125 Safety Speed Cut Manufacturing Company, Inc. 510,588 Mariner Energy, Inc. 338,000 Stewart & Stevenson LLC 656,250 Quicksilver Resources, Inc. 489,000 -------------- Tesoro Petroleum Corporation 200,000 12,293,413 Total E & S, Inc. 898,380 -------------- -------------- MEDICAL DEVICES/BIOTECH - 3.21% 2,253,505 Coeur, Inc. 611,106 -------------- E X C Acquisition Corporation 105,249 PHARMACEUTICALS - 1.36% ETEX Corporation -- CorePharma LLC 1,349,754 MedSystems Holdings LLC 653,790 Enzymatic Therapy, Inc. 307,668 MicroGroup, Inc. 1,898,307 -------------- OakRiver Technology, Inc. 644,446 1,657,422 TherOX, Inc. -- -------------- -------------- PUBLISHING/PRINTING - 0.58% 3,912,898 Quebecor Media, Inc. 503,125 -------------- Sheridan Acquisition Corporation 200,250 -------------- 703,375 -------------- RETAIL STORES - 1.05% Neiman Marcus Group, Inc. 502,500 Olympic Sales, Inc. 151,031 Rental Service Corporation 378,750 United Rentals, Inc. 247,813 -------------- 1,280,094 -------------- ------------------------------------------------------------------------------------------------------------------------------------ 32 CONSOLIDATED SCHEDULE OF INVESTMENTS(CONTINUED) September 30, 2008 MassMutual Participation Investors (Unaudited) Fair Value/ Fair Value/ INDUSTRY CLASSIFICATION:(Continued) Market Value Market Value -------------- -------------- TECHNOLOGY - 1.99% UTILITIES - 1.31% Compucom Systems, Inc. $ 601,325 El Paso Corporation $ 446,600 EnerNOC, Inc. 242,990 Inergy LP 69,000 Smart Source Holdings LLC 1,586,675 Intergen NV 375,000 -------------- Petrohawk Energy Corporation 705,000 2,430,990 -------------- -------------- 1,595,600 TELECOMMUNICATIONS - 2.07% -------------- All Current Holding Company 651,965 WASTE MANAGEMENT / POLLUTION - 2.72% Cincinnati Bell, Inc. 478,500 Terra Renewal LLC 2,035,672 Intelsat Bermuda Ltd. 641,700 Torrent Group Holdings, Inc. 1,287,649 ITC^DeltaCom, Inc. 184,447 -------------- Rogers Wireless, Inc. 569,233 3,323,321 -------------- -------------- 2,525,845 Total Corporate Restricted and -------------- Public Securities - 99.45% $ 121,304,591 TRANSPORTATION - 1.83% ============== NABCO, Inc. 201,725 Tangent Rail Corporation 2,027,190 -------------- 2,228,915 -------------- See Notes to Consolidated Financial Statements ------------------------------------------------------------------------------------------------------------------------------------ 33 INCOME TAX INFORMATION The aggregate cost of investments is substantially the same for financial reporting and federal income tax purposes as of September 30, 2008. The net unrealized depreciation of investments for financial reporting and federal tax purposes as of September 30, 2008 is $12,967,074 and consists of $7,394,739 appreciation and $20,361,813 depreciation. FAIR VALUE MEASUREMENTS Effective January 1, 2008, the Trust adopted FASB Statement of Financial Accounting Standards No. 157, "Fair Value Measurements" ("FAS 157"). FAS 157 clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. FAS 157 requires companies to provide expanded information about the assets and liabilities measured at fair value and the potential effect of these fair valuations of an entity's financial performance. Various inputs are used in determining the value of the Trust's investments. Using the hierarchy established under FAS 157, these inputs are summarized in the three broad levels listed below: Level 1: quoted prices in active markets for identical securities Level 2: other significant observable inputs (including quoted prices for similar securities, interest rates, prepayments speeds, credit risk, etc.) Level 3: significant unobservable inputs (including the Trust's own assumptions in determining the fair value of investments) The inputs and methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. The following is a summary of the inputs used to value the Trust's net assets as of September 30, 2008: ASSETS TOTAL LEVEL 1 LEVEL 2 LEVEL 3 ----------------------------------------------------------------------------- Restricted Securities $101,851,295 $ -- $ 4,299,675 $97,551,620 Public Securities 19,453,296 1,398,263 18,055,033 -- Short-term Securities 10,127,791 -- 10,127,791 -- ----------------------------------------------------------------------------- TOTAL $131,432,382 $1,398,263 32,482,499 $97,551,620 Following is a reconciliation of Level 3 assets for which significant unobservable inputs were used to determine fair value: RESTRICTED PUBLIC SHORT-TERM ASSETS SECURITIES SECURITIES SECURITIES TOTAL ----------------------------------------------------------------------------- Beginning balance at 12/31/2007 $94,083,138 $ -- $ -- $94,083,138 Total gains or losses (realized/unrealized) included in earnings* (4,629,851) -- -- (4,629,851) Purchases, sales, issuances & settlements (net) 8,098,333 -- -- 8,098,333 ----------------------------------------------------------------------------- ENDING BALANCE AT 9/30/08 $97,551,620 $ -- $ -- $97,551,620 *The amount of total gains or losses for the period included in earnings attributable to the change in unrealized gains or losses relating to Level 3 assets still held at 9/30/08 is ($6,182,251). ITEM 2. CONTROLS AND PROCEDURES. (a) The principal executive officer and principal financial officer of the Registrant evaluated the effectiveness of the Registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act") as of a date within 90 days of the filing date of this report and based on that evaluation have concluded that such disclosure controls and procedures are effective to provide reasonable assurance that material information required to be disclosed by the Registrant on Form N-Q is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no changes in the Registrant's internal control over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the Registrant's last fiscal quarter that has materially affected, or are reasonably likely to materially affect, the Registrant's internal control over financial reporting. ITEM 3. EXHIBITS. Certifications pursuant to Rule 30a-2(a) under the Investment Company Act of 1940 (17 CFR 270.30a-2(a)) are attached hereto as an exhibit. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) MassMutual Participation Investors ---------------------------------- By (Signature and Title)* /s/ Clifford M. Noreen --------------------------------------------- Clifford M. Noreen, President Date November 24, 2008 ------------------------------------------------------------------ Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated. By (Signature and Title)* /s/ Clifford M. Noreen --------------------------------------------- Clifford M. Noreen, President Date November 24, 2008 ------------------------------------------------------------------ By (Signature and Title)* /s/ James M. Roy --------------------------------------------- James M. Roy, Vice President and Chief Financial Officer Date November 24, 2008 ------------------------------------------------------------------ * PRINT THE NAME AND TITLE OF EACH SIGNING OFFICER UNDER HIS OR HER SIGNATURE.