Massmutual Premier Funds NPORT-P MassMutual Balanced Fund (Jun 2022 report)

MassMutual Short-Duration Bond Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 96.4%
CORPORATE DEBT — 51.4%
Aerospace & Defense — 0.3%
The Boeing Co.
2.196% 2/04/26	$	2,850,000	$	2,567,066
Agriculture — 2.3%
BAT Capital Corp.
4.700% 4/02/27		6,270,000		6,131,419
Imperial Brands Finance PLC
3.125% 7/26/24 (a)		4,020,000		3,896,059
Wens Foodstuffs Group Co. Ltd.
2.349% 10/29/25 (a)		8,225,000		6,923,761
				16,951,239
Airlines — 1.1%
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.500% 10/20/25 (a)		8,663,000		8,422,563
Auto Manufacturers — 2.8%
Ford Motor Credit Co. LLC
2.300% 2/10/25		5,470,000		4,907,499
General Motors Co.
6.125% 10/01/25		3,807,000		3,938,362
Harley-Davidson Financial Services, Inc.
3.350% 6/08/25 (a)		2,558,000		2,460,045
Hyundai Capital America
1.500% 6/15/26 (a)		3,960,000		3,508,732
Nissan Motor Acceptance Co. LLC
1.850% 9/16/26 (a)		7,770,000		6,556,799
				21,371,437
Banks — 6.6%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		4,635,000		4,612,669
Banco Santander SA
1.849% 3/25/26		2,200,000		1,979,497
Barclays PLC
5.200% 5/12/26		5,340,000		5,317,209
BPCE SA
4.625% 7/11/24 (a)		1,200,000		1,192,345
5.700% 10/22/23 (a)		4,148,000		4,210,937
Burgan Bank SAK 5 year CMT + 2.229%
2.750% VRN 12/15/31 (a)		2,000,000		1,652,780
Credit Suisse AG
6.500% 8/08/23 (a)		6,260,000		6,260,000
Credit Suisse Group AG SOFR + 0.980%
1.305% VRN 2/02/27 (a)		1,610,000		1,383,853

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Danske Bank A/S 1 year CMT + .730%
1.549% VRN 9/10/27 (a)	$	2,220,000	$	1,946,686
Deutsche Bank AG
SOFR + 1.219% 2.311% VRN 11/16/27		4,115,000		3,555,922
SOFR + 1.318% 2.552% VRN 1/07/28		3,670,000		3,181,141
HSBC Holdings PLC
4.375% 11/23/26		3,264,000		3,199,159
Macquarie Group Ltd. SOFR + 1.069%
1.340% VRN 1/12/27 (a)		2,650,000		2,331,653
Natwest Group PLC 1 year CMT + .900%
1.642% VRN 6/14/27		2,565,000		2,251,631
Santander UK Group Holdings PLC SOFR + 1.220%
2.469% VRN 1/11/28		3,170,000		2,804,819
Societe Generale SA
1 year CMT + 1.100% 1.488% VRN 12/14/26 (a)		3,060,000		2,702,003
1 year CMT + 1.000% 1.792% VRN 6/09/27 (a)		245,000		213,956
1 year CMT + 1.300% 2.797% VRN 1/19/28 (a)		1,200,000		1,073,039
				49,869,299
Beverages — 0.3%
JDE Peet's NV
1.375% 1/15/27 (a)		2,879,000		2,479,714
Chemicals — 1.9%
MEGlobal Canada ULC
5.000% 5/18/25 (a)		6,400,000		6,455,846
Syngenta Finance NV
4.441% 4/24/23 (a)		2,641,000		2,662,685
4.892% 4/24/25 (a)		765,000		767,548
Yara International ASA
3.800% 6/06/26 (a)		2,125,000		2,034,802
4.750% 6/01/28 (a)		2,125,000		2,038,286
				13,959,167
Commercial Services — 0.6%
Triton Container International Ltd.
2.050% 4/15/26 (a)		5,500,000		4,872,658
Distribution & Wholesale — 0.9%
Ferguson Finance PLC
4.250% 4/20/27 (a)		2,225,000		2,165,798
Li & Fung Ltd.
4.500% 8/18/25 (a)		4,750,000		4,467,032
				6,632,830
Diversified Financial Services — 5.1%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
2.450% 10/29/26		3,090,000		2,694,209
6.500% 7/15/25 (b)		2,200,000		2,252,992
Aircastle Ltd.
4.125% 5/01/24		3,290,000		3,199,344
Antares Holdings LP
2.750% 1/15/27 (a)		2,785,000		2,245,348
3.950% 7/15/26 (a)		4,980,000		4,327,994
6.000% 8/15/23 (a)		3,332,000		3,365,702
Avolon Holdings Funding Ltd.
2.875% 2/15/25 (a)		7,395,000		6,807,628

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
BGC Partners, Inc.
4.375% 12/15/25	$	3,690,000	$	3,600,568
LeasePlan Corp. NV
2.875% 10/24/24 (a)		2,022,000		1,938,034
Nomura Holdings, Inc.
5.099% 7/03/25 (c)		2,170,000		2,181,265
SPARC EM SPC Panama Metro Line 2 SP
0.000% 12/05/22 (a)		547,192		536,249
Synchrony Financial
3.950% 12/01/27		5,550,000		5,067,311
				38,216,644
Electric — 0.7%
Alliant Energy Finance LLC
1.400% 3/15/26 (a)		1,630,000		1,449,931
Enel Finance International NV
4.625% 6/15/27 (a)		2,079,000		2,048,174
Pacific Gas and Electric Co.
4.950% 6/08/25		2,110,000		2,070,726
				5,568,831
Electronics — 0.2%
Jabil, Inc.
4.250% 5/15/27		1,765,000		1,715,077
Entertainment — 0.4%
Magallanes, Inc.
3.638% 3/15/25 (a)		3,230,000		3,130,932
Food — 1.6%
JBS Finance Luxembourg Sarl
2.500% 1/15/27 (a)		7,525,000		6,529,743
Pilgrim's Pride Corp.
5.875% 9/30/27 (a) (b)		709,000		678,868
Smithfield Foods, Inc.
4.250% 2/01/27 (a)		4,625,000		4,457,956
				11,666,567
Health Care – Services — 0.3%
HCA, Inc.
5.375% 2/01/25		1,935,000		1,935,542
Home Builders — 0.3%
Toll Brothers Finance Corp.
4.875% 3/15/27		2,400,000		2,273,565
Insurance — 3.0%
AmTrust Financial Services, Inc.
6.125% 8/15/23		4,810,000		4,815,619
Athene Global Funding
1.730% 10/02/26 (a)		3,935,000		3,419,469
3.205% 3/08/27 (a)		1,735,000		1,579,154
CNO Financial Group, Inc.
5.250% 5/30/25		1,519,000		1,543,695
Corebridge Financial, Inc.
3.650% 4/05/27 (a)		1,505,000		1,416,320

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Jackson Financial, Inc.
5.170% 6/08/27	$	999,000	$	991,751
Sammons Financial Group, Inc.
4.450% 5/12/27 (a)		6,515,000		6,339,401
Unum Group
3.875% 11/05/25		2,220,000		2,183,717
				22,289,126
Internet — 1.5%
Expedia Group, Inc.
4.625% 8/01/27		1,645,000		1,582,766
Netflix, Inc.
5.875% 11/15/28		3,457,000		3,379,217
Prosus NV
3.257% 1/19/27 (a)		7,000,000		6,091,802
				11,053,785
Investment Companies — 3.8%
Ares Capital Corp.
3.875% 1/15/26		3,815,000		3,507,199
BlackRock TCP Capital Corp.
3.900% 8/23/24		2,927,000		2,830,059
Blackstone Private Credit Fund
2.625% 12/15/26 (a)		9,045,000		7,588,344
2.700% 1/15/25 (a)		2,755,000		2,534,176
Golub Capital BDC, Inc.
2.500% 8/24/26		1,965,000		1,646,830
3.375% 4/15/24		2,433,000		2,337,923
Icahn Enterprises LP/ Icahn Enterprises Finance Corp.
4.750% 9/15/24		2,210,000		2,061,978
OWL Rock Core, Income Corp.
4.700% 2/08/27 (a)		4,035,000		3,685,537
Sixth Street Specialty Lending, Inc.
3.875% 11/01/24		2,090,000		2,018,645
				28,210,691
Iron & Steel — 1.0%
Vale Overseas Ltd.
6.250% 8/10/26 (b)		7,549,000		7,857,357
Lodging — 1.0%
Las Vegas Sands Corp.
3.200% 8/08/24		7,680,000		7,233,600
Machinery – Construction & Mining — 0.8%
The Weir Group PLC
2.200% 5/13/26 (a)		6,750,000		5,941,523
Media — 0.6%
Cable Onda SA
4.500% 1/30/30 (a)		5,550,000		4,629,477
Mining — 0.8%
Alcoa Nederland Holding BV
6.125% 5/15/28 (a)		3,295,000		3,204,388

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Glencore Funding LLC
1.625% 4/27/26 (a)	$	3,425,000	$	3,033,269
				6,237,657
Multi-National — 1.5%
Africa Finance Corp.
3.125% 6/16/25 (a)		5,973,000		5,556,085
The Eastern & Southern African Trade & Development Bank
4.875% 5/23/24 (a)		6,000,000		5,663,280
				11,219,365
Oil & Gas — 2.2%
EQT Corp.
6.625% STEP 2/01/25		5,448,000		5,612,747
Occidental Petroleum Corp.
5.500% 12/01/25		4,780,000		4,708,300
Ovintiv Exploration, Inc.
5.375% 1/01/26		2,500,000		2,530,125
Patterson-UTI Energy, Inc.
3.950% 2/01/28		4,130,000		3,437,848
				16,289,020
Pharmaceuticals — 0.7%
Viatris, Inc.
2.300% 6/22/27		5,855,000		5,067,873
Pipelines — 2.0%
Energy Transfer LP
4.950% 6/15/28		5,275,000		5,206,655
EnLink Midstream Partners LP
4.400% 4/01/24		7,955,000		7,736,238
Plains All American Pipeline LP/PAA Finance Corp.
4.500% 12/15/26		960,000		944,925
4.650% 10/15/25		1,145,000		1,134,815
				15,022,633
Real Estate — 2.0%
Country Garden Holdings Co. Ltd.
4.750% 1/17/23 (a)		4,000,000		3,505,275
8.000% 1/27/24 (a)		8,433,000		5,544,698
MAF Sukuk Ltd.
4.500% 11/03/25 (a)		4,525,000		4,513,235
Shimao Group Holdings Ltd.
6.125% 2/21/24 (a)		14,600,000		1,588,518
				15,151,726
Real Estate Investment Trusts (REITS) — 2.0%
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		1,925,000		1,611,230
Omega Healthcare Investors, Inc.
4.750% 1/15/28		5,069,000		4,817,669
Service Properties Trust
4.350% 10/01/24		8,315,000		6,742,717

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Vornado Realty LP
2.150% 6/01/26	$	2,350,000	$	2,096,094
				15,267,710
Retail — 0.3%
Nordstrom, Inc.
2.300% 4/08/24		2,051,000		1,951,937
4.000% 3/15/27 (b)		740,000		651,200
				2,603,137
Telecommunications — 1.4%
Telecom Italia SpA
5.303% 5/30/24 (a)		3,610,000		3,459,824
Tower Bersama Infrastructure Tbk PT
4.250% 1/21/25 (a)		7,000,000		6,758,250
				10,218,074
Toys, Games & Hobbies — 0.6%
Mattel, Inc.
3.375% 4/01/26 (a)		4,560,000		4,183,458
Venture Capital — 0.8%
Hercules Capital, Inc.
2.625% 9/16/26		5,488,000		4,742,722
3.375% 1/20/27		1,390,000		1,218,535
				5,961,257
TOTAL CORPORATE DEBT (Cost $440,400,692)				386,070,600
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 45.0%
Automobile Asset-Backed Securities — 1.3%
AmeriCredit Automobile Receivables Trust, Series 2020-3, Class D
1.490% 9/18/26		339,000		321,322
Avis Budget Rental Car Funding AESOP LLC, Series 2019-3A, Class C
3.150% 3/20/26 (a)		2,764,000		2,589,013
Carmax Auto Owner Trust, Series 2019-2, Class D, ABS
3.410% 10/15/25		615,000		612,634
Santander Drive Auto Receivables Trust, Series 2020-4, Class D
1.480% 1/15/27		401,000		386,837
Westlake Automobile Receivables Trust, Series 2021-1A, Class E
2.330% 8/17/26 (a)		6,774,000		6,327,538
				10,237,344
Commercial Mortgage-Backed Securities — 5.9%
BAMLL Commercial Mortgage Securities Trust
Series 2018-DSNY, Class C, 1 mo. USD LIBOR + 1.350% 2.674% FRN 9/15/34 (a)		570,000		541,674
Series 2019-BPR, Class CMP, 4.024% VRN 11/05/32 (a) (d)		2,280,000		2,052,682
Series 2019-BPR, Class DMP, 4.024% VRN 11/05/32 (a) (d)		3,050,000		2,722,398
BX Commercial Mortgage Trust, Series 2021-SOAR, Class E, 1 mo. USD LIBOR + 1.800%
3.125% FRN 6/15/38 (a)		5,633,326		5,308,773

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD LIBOR + 2.150%
3.474% FRN 12/15/37 (a)	$	2,835,008	$	2,725,024
JP Morgan Chase Commercial Mortgage Securities Trust, Series 2013-LC11, Class C,
3.958% VRN 4/15/46 (d)		1,015,000		980,922
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD LIBOR + 1.750%
3.074% FRN 8/15/38 (a)		4,400,000		4,222,667
KKR Industrial Portfolio Trust, Series 2021-KDIP, Class E, 1 mo. USD LIBOR + 1.550%
2.874% FRN 12/15/37 (a)		5,187,750		4,890,216
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
3.124% FRN 5/15/36 (a)		1,604,000		1,527,866
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD LIBOR + 1.750%
3.074% FRN 3/15/38 (a)		2,667,781		2,487,663
MHC Commercial Mortgage Trust, Series 2021-MHC, Class E, 1 mo. USD LIBOR + 2.101%
3.425% FRN 4/15/38 (a)		5,910,000		5,541,185
Morgan Stanley Bank of America Merrill Lynch Trust, Series 2013-C7, Class B
3.769% 2/15/46		2,340,000		2,303,095
Morgan Stanley Capital I Trust, Series 2012-STAR, Class D,
4.057% VRN 8/05/34 (a) (d)		2,300,000		2,290,951
One New York Plaza Trust
Series 2020-1NYP, Class C, 1 mo. USD LIBOR + 2.200% 3.524% FRN 1/15/36 (a)		4,106,000		3,991,215
Series 2020-1NYP, Class D, 1 mo. USD LIBOR + 2.750% 4.074% FRN 1/15/36 (a)		2,760,000		2,668,065
				44,254,396
Home Equity Asset-Backed Securities — 0.0%
Credit Suisse Seasoned Loan Trust, Series 2006-1, Class A, 1 mo. USD LIBOR + .480%
2.104% FRN 10/25/34 (a)		59,947		59,915
Other Asset-Backed Securities — 20.5%
321 Henderson Receivables LLC
Series 2006-1A, Class A1, 1 mo. USD LIBOR + .200% 1.524% FRN 3/15/41 (a)		28,899		28,746
Series 2006-3A, Class A1, 1 mo. USD LIBOR + .200% 1.524% FRN 9/15/41 (a)		50,422		49,496
522 Funding CLO Ltd., Series 2018-3A, Class BR, 3 mo. USD LIBOR + 1.550%
2.613% FRN 10/20/31 (a)		2,352,000		2,226,039
AASET Trust, Series 2020-1A, Class B
4.335% 1/16/40 (a)		832,574		364,282
Adams Outdoor Advertising LP, Series 2018-1, Class A
4.810% 11/15/48 (a)		1,769,569		1,743,291
AIMCO CLO 10 Ltd., Series 2019-10A, Class AR, 3 mo. USD LIBOR + 1.060%
2.196% FRN 7/22/32 (a)		5,000,000		4,880,825
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD LIBOR + .900%
2.524% FRN 10/25/34		114,751		111,874

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Ballyrock CLO Ltd., Series 2020-2A, Class A2R, 3 mo. USD LIBOR + 1.550%
2.613% FRN 10/20/31 (a)	$	4,700,000	$	4,468,666
BHG Securitization Trust, Series 2021-B, Class C
2.240% 10/17/34 (a)		3,736,000		3,339,611
BRE Grand Islander Timeshare Issuer LLC
Series 2017-1A, Class A, 2.940% 5/25/29 (a)		201,794		197,850
Series 2017-1A, Class B, 3.240% 5/25/29 (a)		57,655		56,516
Series 2019-A, Class B, 3.780% 9/26/33 (a)		1,019,863		997,510
Business Jet Securities LLC, Series 2021-1A, Class A
2.162% 4/15/36 (a)		3,083,541		2,790,511
Canyon Capital CLO Ltd., Series 2017-1A, Class CR, 3 mo. USD LIBOR + 2.000%
3.044% FRN 7/15/30 (a)		1,540,000		1,450,257
Capital Automotive REIT, Series 2020-1A, Class B1
4.170% 2/15/50 (a)		3,289,000		3,190,065
Castlelake Aircraft Securitization, Series 2019-1A, Class B
5.095% 4/15/39 (a)		707,996		560,796
Castlelake Aircraft Structured Trust, Series 2018-1, Class A
4.125% 6/15/43 (a)		1,353,947		1,216,859
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
2.043% FRN 4/20/31 (a)		900,000		881,338
CF Hippolyta Issuer LLC, Series 2020-1, Class B1
2.280% 7/15/60 (a)		590,963		532,056
CIFC Funding Ltd., Series 2017-2A, Class BR, 3 mo. USD LIBOR + 1.500%
2.563% FRN 4/20/30 (a)		1,750,000		1,690,479
DB Master Finance LLC, Series 2017-1A, Class A2II
4.030% 11/20/47 (a)		957,500		916,510
Diamond Resorts Owner Trust
Series 2021-1A, Class B, 2.050% 11/21/33 (a)		3,324,501		3,156,182
Series 2018-1, Class A, 3.700% 1/21/31 (a)		125,167		124,299
Elara HGV Timeshare Issuer LLC
Series 2017-A, Class A, 2.690% 3/25/30 (a)		255,727		251,127
Series 2016-A, Class A, 2.730% 4/25/28 (a)		367,819		359,961
Series 2017-A, Class B, 2.960% 3/25/30 (a)		628,663		614,756
Series 2016-A, Class B, 3.220% 4/25/28 (a)		253,623		249,428
Series 2019-A, Class C, 3.450% 1/25/34 (a)		2,209,091		2,154,130
FCI Funding LLC, Series 2019-1A, Class A
3.630% 2/18/31 (a)		87,125		87,170
Firstkey Homes Trust, Series 2021, Class E2
2.489% 8/17/38 (a)		4,760,000		4,200,547
Flatiron CLO 17 Ltd., Series 2017-1A, Class AR, 3 mo. USD LIBOR + .980%
2.391% FRN 5/15/30 (a)		6,500,000		6,390,182
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		2,424,157		2,200,969
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		891,377		827,787
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		2,034,520		1,939,153
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (d)		2,770,607		2,613,695
Gracie Point International Funding, Series 2021-1A, Class B, 1 mo. USD LIBOR + 1.400%
2.462% FRN 11/01/23 (a)		1,750,000		1,733,848
Hero Funding Trust
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		710,576		679,262
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		140,278		135,879
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		355,925		350,283
Series 2015-1A, Class A, 3.840% 9/21/40 (a)		233,555		233,509
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		113,976		110,854

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)	$	910,347	$	896,094
Hilton Grand Vacations Trust
Series 2019-AA, Class C, 2.840% 7/25/33 (a)		1,070,328		1,036,420
Series 2017-AA, Class B, 2.960% 12/26/28 (a)		217,220		213,614
Series 2018-AA, Class A, ABS, 144A, 3.540% 2/25/32 (a)		135,468		133,673
Horizon Aircraft Finance I Ltd., Series 2018-1, Class A
4.458% 12/15/38 (a)		818,312		711,972
Horizon Aircraft Finance II Ltd, Series 2019-1, Class A
3.721% 7/15/39 (a)		2,620,651		2,318,883
Horizon Aircraft Finance III Ltd.
Series 2019-2, Class A, 3.425% 11/15/39 (a)		2,173,286		1,884,946
Series 2019-2, Class B, 4.458% 11/15/39 (a)		1,757,143		1,414,325
Hotwire Funding LLC, Series 2021-1, Class B
2.658% 11/20/51 (a)		3,753,000		3,290,269
Kestrel Aircraft Fundig Limited, Series 2018-1A, Class A
4.250% 12/15/38 (a)		3,117,351		2,736,825
KREF Ltd., Series 2021-FL2, Class AS, 1 mo. USD LIBOR + 1.300%
2.823% FRN 2/15/39 (a)		10,000,000		9,417,920
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		1,788,286		1,621,936
Mosaic Solar Loans LLC
Series 2018-2GS, Class A, 4.200% 2/22/44 (a)		689,248		663,978
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		125,336		122,807
Neuberger Berman Loan Advisers CLO 24 Ltd., Series 2017-24A, Class BR, 3 mo. USD LIBOR + 1.500%
2.544% FRN 4/19/30 (a)		500,000		483,758
Neuberger Berman Loan Advisers CLO 25 Ltd., Series 2017-25A, Class BR, 3 mo. USD LIBOR + 1.350%
2.394% FRN 10/18/29 (a)		6,950,000		6,654,403
New Residential Advance Receivables Trust, Series 2020-T1, Class ET1
5.467% 8/15/53 (a)		1,651,000		1,590,778
Newark BSL CLO 2 Ltd., Series 2017-1A, Class A2R, 3 mo. USD LIBOR + 1.400%
2.584% FRN 7/25/30 (a)		1,375,000		1,320,733
NP SPE II LP, Series 2017-1A, Class A1
3.372% 10/21/47 (a)		560,724		534,070
NRZ Advance Receivables Trust, Series 2020-T3, Class DT3
2.458% 10/15/52 (a)		1,034,800		1,025,247
Oak Street Investment Grade Net Lease Fund, Series 2020-1A, Class A3
2.260% 11/20/50 (a)		2,507,000		2,225,099
Orange Lake Timeshare Trust
Series 2016-A, Class B, 2.910% 3/08/29 (a)		300,285		299,909
Series 2018-A, Class C, 3.740% 11/08/30 (a)		246,622		242,256
Oxford Finance Funding LLC, Series 2020-1A, Class B
4.037% 2/15/28 (a)		1,321,623		1,313,264
Pioneer Aircraft Finance Ltd., Series 2019-1, Class A
3.967% 6/15/44 (a)		1,435,257		1,311,776
Planet Fitness Master Issuer LLC, Series 2018-1A, Class A2II
4.666% 9/05/48 (a)		8,117,725		7,969,546
Rad CLO 1 Ltd., Series 2018-1A, Class BR, 3 mo. USD LIBOR + 1.400%
2.444% FRN 7/15/31 (a)		2,650,000		2,535,369
RAMP Trust, Series 2005-EFC1, Class M5, 1 mo. USD LIBOR + .650%
2.599% FRN 5/25/35		2,600,051		2,579,467
Rockford Tower CLO Ltd.
Series 2017-3A, Class A, 3 mo. USD LIBOR + 1.190% 2.253% FRN 10/20/30 (a)		1,750,000		1,717,254
Series 2017-2A, Class BR, 3 mo. USD LIBOR + 1.500% 2.544% FRN 10/15/29 (a)		2,250,000		2,172,492

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Sierra Receivables Funding LLC
Series 2021-1A, Class C, 1.790% 11/20/37 (a)	$	904,829	$	848,843
Series 2019-3A, Class C, 3.000% 8/20/36 (a)		1,504,186		1,441,517
Series 2020-2A, Class C, 3.510% 7/20/37 (a)		316,122		305,528
Series 2019-1A, Class C, 3.770% 1/20/36 (a)		411,066		399,154
SoFi Consumer Loan Program Trust, Series 2020-1, Class D
2.940% 1/25/29 (a)		4,000,000		3,965,487
Store Master Funding I-VII, Series 2018-1A, Class A3
4.400% 10/20/48 (a)		3,066,000		2,934,914
Structured Asset Investment Loan Trust, Series 2004-11, Class M1, 1 mo. USD LIBOR + .930%
2.554% FRN 1/25/35		5,005,890		4,844,750
TAL Advantage VII LLC, Series 2020-1A, Class B
3.290% 9/20/45 (a)		2,775,250		2,640,260
Terwin Mortgage Trust, Series 2006-5, Class 1A2B, 1 mo. USD LIBOR + .420%
2.044% FRN 7/25/37 (a)		1,620,673		1,603,248
Thrust Engine Leasing, Series 2021-1A, Class A
4.163% 7/15/40 (a)		4,181,102		3,711,087
Trafigura Securitisation Finance PLC, Series 2021-1A, Class B
1.780% 1/15/25 (a)		7,048,000		6,545,478
VERDE CLO Ltd., Series 2019-1A, Class AR, 3 mo. USD LIBOR + 1.100%
2.144% FRN 4/15/32 (a)		2,500,000		2,431,227
Welk Resorts LLC, Series 2017-AA, Class B
3.410% 6/15/33 (a)		593,099		589,763
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		1,495,844		1,223,650
				154,030,587
Student Loans Asset-Backed Securities — 6.8%
Access Group, Inc.
1.955% FRN 9/25/37 (d)		150,000		149,005
Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 7/25/58 (a)		630,000		579,931
Chase Education Loan Trust, Series 2007-A, Class B, 3 mo. USD LIBOR + .220%
2.454% FRN 3/28/68		458,289		418,096
College Avenue Student Loans LLC
Series 2021-A, Class B, 2.320% 7/25/51 (a)		9,124,000		8,602,209
Series 2017-A, Class A1, FRN, 1 mo. USD LIBOR + 1.650% 3.274% FRN 11/26/46 (a)		502,455		499,319
Series 2019-A, Class B, 3.810% 12/28/48 (a)		1,614,966		1,559,712
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
1.534% FRN 1/15/37		478,904		434,741
Commonbond Student Loan Trust
Series 2017-AGS, Class B, 3.470% 5/25/41 (a)		405,266		382,261
Series 2018-AGS, Class C, 3.820% 2/25/44 (a)		117,223		107,368
Series 2018-BGS, Class C, 4.120% 9/25/45 (a)		94,081		87,415
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		45,440		42,323
Series 2017-AGS, Class C, 5.280% 5/25/41 (a)		156,093		149,598
Credit Suisse ABS Repackaging Trust, Series 2013-A, Class B
2.500% 1/25/30 (a)		148,671		144,169
DRB Prime Student Loan Trust
Series 2017-C, Class B, 2.950% 11/25/42 (a)		689,625		675,046
Series 2017-B, Class CFX, 3.610% 8/25/42 (a)		688,402		669,324
ELFI Graduate Loan Program LLC, Series 2018-A, Class B
4.000% 8/25/42 (a)		251,808		245,317

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Goal Capital Funding Trust
Series 2010-1, Class A, 3 mo. USD LIBOR + .700% 2.224% FRN 8/25/48 (a)	$	68,488	$	68,295
Series 2015-1, Class B, ABS, FRN, 144A, 1 mo. USD LIBOR + 1.500% 3.124% FRN 9/25/43 (a)		100,000		99,077
Higher Education Funding I, Series 2004-1, Class B1,
FRN 1/01/44 (a) (d)		950,000		853,510
Laurel Road Prime Student Loan Trust
Series 2019-A, Class BFX, 3.000% 10/25/48 (a)		1,210,820		1,168,190
Series 2018-B, Class BFX, 3.720% 5/26/43 (a)		546,147		531,363
Navient Private Education Refi Loan Trust, Series 2020-BA, Class B
2.770% 1/15/69 (a)		6,200,000		5,774,871
Navient Student Loan Trust, Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500%
3.124% FRN 7/25/52		1,100,000		1,075,229
Nelnet Private Education Loan Trust, Series 2016-A, Class A1A, 1 mo. USD LIBOR + 1.750%
3.374% FRN 12/26/40 (a)		44,116		44,099
Nelnet Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/25/38		756,955		680,018
Series 2006-3, Class B, 3 mo. USD LIBOR + .250% 2.447% FRN 6/25/41		1,243,167		1,146,076
Series 2012-4A, Class B, 1 mo. USD LIBOR + 1.000% 2.624% FRN 7/26/49 (a)		900,000		844,671
Series 2018-5A, Class B, 1 mo. USD LIBOR + 1.450% 3.074% FRN 2/25/67 (a)		1,000,000		999,977
Series 2015-3A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 6/25/54 (a)		395,000		394,997
SLC Student Loan Trust
Series 2005-1, Class B, 3 mo. USD LIBOR + .200% 1.611% FRN 2/15/45		444,280		412,886
Series 2006-1, Class B, ABS, FRN, 3 mo. USD LIBOR + .210% 2.039% FRN 3/15/55		1,569,888		1,437,754
Series 2006-2, Class B, 3 mo. USD LIBOR + .230% 2.059% FRN 12/15/39		1,192,021		1,078,684
Series 2005-3, Class B, 3 mo. USD LIBOR + .250% 2.079% FRN 6/15/55		971,780		894,208
SLM Student Loan Trust
Series 2005-4, Class B, 3 mo. USD LIBOR + .180% 1.364% FRN 7/25/55		506,958		475,937
Series 2006-7, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/27/42		2,679,587		2,459,308
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 1.394% FRN 10/25/40		429,119		401,408
Series 2005-5, Class B, ABS, FRN, 3 mo. USD LIBOR + .250% 1.434% FRN 10/25/40		508,901		476,359
Series 2005-6, Class B, 3 mo. USD LIBOR + .290% 1.474% FRN 1/25/44		2,449,906		2,223,107
Series 2003-14, Class A6, 3 mo. USD LIBOR + .300% 1.484% FRN 7/25/25		7,432		7,424
Series 2005-9, Class B, 3 mo. USD LIBOR + .300% 1.484% FRN 1/25/41		1,344,401		1,257,545
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 1.494% FRN 1/25/55		362,679		344,709
Series 2004-8, Class B, 3 mo. USD LIBOR + .460% 1.644% FRN 1/25/40		785,759		742,285
Series 2004-1 Class B, 3 mo. USD LIBOR + .500% 1.684% FRN 7/25/39		371,921		351,203
Series 2003-4, Class B, 3 mo. USD LIBOR + .650% 2.479% FRN 6/15/38		253,353		239,058
Series 2003-11, Class B, 3 mo. USD LIBOR + .650% 2.479% FRN 12/15/38		934,981		889,424
SMB Private Education Loan Trust
Series 2016-C, Class A2B, 1 mo. USD LIBOR + 1.100% 2.424% FRN 9/15/34 (a)		88,734		89,091
Series 2014-A, Class B, 4.000% 9/15/42 (a)		1,250,000		1,215,937
Series 2015-C, Class C, 4.500% 9/17/46 (a)		1,710,000		1,662,974
SoFi Alternative Trust, Series 2019-C, Class PT,
4.314% VRN 1/25/45 (a) (d)		2,260,171		2,231,437
SoFi Professional Loan Program LLC

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2016-D, Class A1, 1 mo. USD LIBOR + .950% 2.574% FRN 1/25/39 (a)	$	11,212	$	11,175
Series 2016-B, Class A1, 1 mo. USD LIBOR + 1.200% 2.824% FRN 6/25/33 (a)		61,424		61,436
Series 2019-A, Class BFX, ABS, 144A, 4.110% 6/15/48 (a)		870,000		833,281
Series 2017-C, Class C, 4.210% VRN 7/25/40 (a) (d)		2,410,000		2,272,976
Wachovia Student Loan Trust, Series 2005-1, Class B, ABS, FRN, 3 mo. USD LIBOR + .300%
1.484% FRN 10/25/40		400,899		371,751
				50,867,564
Whole Loan Collateral Collateralized Mortgage Obligations — 10.4%
Angel Oak Mortgage Trust
Series 2020-5, Class A3, 2.041% VRN 5/25/65 (a) (d)		674,537		639,694
Series 2021-1, Class M1, 2.215% VRN 1/25/66 (a) (d)		2,290,000		1,975,796
Series 2021-3, Class M1, 2.479% VRN 5/25/66 (a) (d)		6,583,000		5,094,577
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
2.560% VRN 8/25/34 (d)		10,144		9,744
Credit Suisse Mortgage Capital Certificates, Series 2021-NQM4, Class M1,
2.472% VRN 5/25/66 (a) (d)		7,095,350		5,889,801
Credit Suisse Mortgage Trust, Series 2021-NQM2, Class A3,
1.538% VRN 2/25/66 (a) (d)		4,555,235		4,214,672
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (d)		1,250,022		1,190,643
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (d)		4,399,611		3,636,725
FWD Securitization Trust, Series 2020-INV1, Class M1,
2.850% VRN 1/25/50 (a) (d)		1,804,000		1,637,588
Merrill Lynch Mortgage Investors, Inc., Series 2004-A1, Class IIA2,
2.287% VRN 2/25/34 (d)		44,809		42,081
MFRA Trust
Series 2021-NQM2, Class A3, 1.472% VRN 11/25/64 (a) (d)		2,911,641		2,603,910
Series 2020-NQM1, Class A3, 2.300% VRN 8/25/49 (a) (d)		566,989		538,694
New Residential Mortgage Loan Trust, Series 2020-NQM1, Class M1,
3.207% VRN 1/26/60 (a) (d)		2,252,000		2,067,230
NewRez Warehouse Securitization Trust, Series 2021-1, Class C, 1 mo. USD LIBOR + 1.050%
2.674% FRN 5/25/55 (a)		6,739,000		6,470,788
NLT Trust, Series 2021-INV2, Class A3,
1.520% VRN 8/25/56 (a) (d)		6,566,511		5,798,946
Oceanview Trust, Series 2021-1, Class M3
3.090% 12/29/51 (a)		5,000,000		4,817,365
Onslow Bay Financial LLC
Series 2021-NQM3, Class A3, 1.362% VRN 7/25/61 (a) (d)		5,779,447		4,897,516
Series 2021-NQM1, Class M1, 2.219% VRN 2/25/66 (a) (d)		2,501,000		2,087,542
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
4.474% FRN 2/25/23 (a)		1,140,000		1,129,386
Shellpoint Co-Originator Trust, Series 2016-1, Class 2A3,
3.000% VRN 10/25/31 (a) (d)		223,970		211,714
Starwood Mortgage Residential Trust
Series 2021-3, Class M1, 2.491% VRN 6/25/56 (a) (d)		5,582,000		4,410,912
Series 2020-INV1, Class M1, 2.501% 11/25/55 (a)		2,500,000		2,287,822
Series 2020-1, Class M1, 2.878% VRN 2/25/50 (a) (d)		4,700,000		4,507,467
Toorak Mortgage Corp., Series 2021-INV1, Class M1,
2.585% VRN 7/25/56 (a) (d)		1,222,000		957,658
Verus Securitization Trust
Series 2021-5, Class A3, 1.373% VRN 9/25/66 (a) (d)		2,178,872		1,927,934

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2021-1, Class M1, 1.968% VRN 1/25/66 (a) (d)	$	2,247,000	$	1,899,331
Series 2019-INV2, Class A3, 3.219% VRN 7/25/59 (a) (d)		1,785,084		1,744,474
Series 2019-INV3, Class M1, 3.279% VRN 11/25/59 (a) (d)		2,129,000		1,997,429
Series 2020-4, Class M1, 3.291% VRN 5/25/65 (a) (d)		3,602,000		3,318,775
				78,006,214
Whole Loan Collateral Support Collateralized Mortgage Obligations — 0.1%
OBX Trust, Series 2020-INV1, Class A21,
3.500% VRN 12/25/49 (a) (d)		1,057,637		1,017,509
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $364,198,236)				338,473,529
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 0.0%
Pass-Through Securities — 0.0%
Federal Home Loan Mortgage Corp. Pool #1Q0239, 1 year CMT + 2.189% 2.399% 3/01/37		73,483		75,354
Federal National Mortgage Association Pool #775539 12 mo. USD LIBOR + 1.641% 3.391% 5/01/34		14,375		14,699
Government National Mortgage Association Pool #507545 7.500% 8/15/29		20,325		22,023
				112,076
Whole Loans — 0.0%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes, Series 2020-DNA6, Class M1, 30 day SOFR + .900%
1.826% FRN 12/25/50 (a)		6,430		6,425
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $116,112)				118,501
TOTAL BONDS & NOTES (Cost $804,715,040)				724,662,630
	Number of Shares
MUTUAL FUNDS — 0.4%
Diversified Financial Services — 0.4%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		3,072,928		3,072,928
TOTAL MUTUAL FUNDS (Cost $3,072,928)				3,072,928
TOTAL LONG-TERM INVESTMENTS (Cost $807,787,968)				727,735,558

MassMutual Short-Duration Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 0.9%
Commercial Paper — 0.7%
Alimentation Couchetard, Inc.
1.938% 7/12/22 (a)	$	2,000,000	$	1,998,691
Hyundai Capital America
2.020% 7/13/22 (a)		3,000,000		2,997,925
				4,996,616
Repurchase Agreement — 0.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (g)		1,734,587		1,734,587
TOTAL SHORT-TERM INVESTMENTS (Cost $6,731,430)				6,731,203
TOTAL INVESTMENTS — 97.7% (Cost $814,519,398) (h)				734,466,761
Other Assets/(Liabilities) — 2.3%				16,999,449
NET ASSETS — 100.0%			$	751,466,210

Abbreviation Legend

CLO Collateralized Loan Obligation

FRN Floating Rate Note

STEP Step Up Bond

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $529,973,150 or 70.53% of net assets.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $3,012,304 or 0.40% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. (Note 2).

(c) A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(d) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at June 30, 2022.

(e) May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(f) Represents investment of security lending cash collateral. (Note 2).

(g) Maturity value of $1,734,599. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $1,769,362.

(h) See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Short
U.S. Treasury Ultra 10 Year	9/21/22		43	$	(5,516,628)	$	39,503
U.S. Treasury Note 2 Year	9/30/22		371		(78,407,411)		491,614
U.S. Treasury Note 5 Year	9/30/22		1,908		(215,883,923)		1,710,923
						$	2,242,040

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation (Depreciation)
3-Month USD LIBOR BBA	Quarterly		Fixed 1.047%		Semi-Annually		11/22/24	USD	60,500,000	$	(2,910,768)	$	—	$	(2,910,768)
3-Month USD LIBOR BBA	Quarterly		Fixed 1.143%		Semi-Annually		12/14/24	USD	129,000,000		(6,033,237)		—		(6,033,237)
3-Month USD LIBOR BBA	Quarterly		Fixed 1.174%		Semi-Annually		1/04/25	USD	145,000,000		(6,914,026)		—		(6,914,026)
12-Month USD SOFR	Annually		Fixed 1.462%		Annually		2/09/25	USD	200,000,000		(7,058,780)		—		(7,058,780)
										$	(22,916,811)	$	—	$	(22,916,811)

Currency Legend

USD U.S. Dollar

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 88.4%
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 54.0%
Automobile Asset-Backed Securities — 6.0%
Avis Budget Rental Car Funding, Series 2017-2A, Class D
4.560% 3/20/24 (a) (b)	$	5,000,000	$	4,999,995
Carvana Auto Receivables Trust, Series 2020-N3, Class B
0.660% 6/12/28		5,797,378		5,672,619
Hertz Vehicle Financing LLC, Series 2021-1A, Class D
3.980% 12/26/25 (a)		4,600,000		4,275,595
Onemain Direct Auto Receivable Trust, Series 2022-1A, Class C
5.310% 6/14/29 (a)		1,100,000		1,096,991
Westlake Automobile Receivables Trust, Series 2020-3A, Class D
1.650% 2/17/26 (a)		2,779,000		2,683,943
				18,729,143
Commercial Mortgage-Backed Securities — 3.0%
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD LIBOR + 1.500%
2.824% FRN 7/15/35 (a)		1,150,000		1,085,258
BX Commercial Mortgage Trust, Series 2019-XL, Class F, 1 mo. USD LIBOR + 2.000%
3.324% FRN 10/15/36 (a)		2,082,500		2,003,855
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class D, 1 mo. USD LIBOR + 1.750%
3.074% FRN 12/15/37 (a)		250,836		241,441
Credit Suisse Mortgage Capital Certificates, Series 2019-ICE4, Class D, 1 mo. USD LIBOR + 1.600%
2.924% FRN 5/15/36 (a)		6,000,000		5,835,120
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
3.124% FRN 5/15/36 (a)		389,000		370,536
				9,536,210

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Home Equity Asset-Backed Securities — 0.8%
Centex Home Equity Loan Trust, Series 2006-A, Class M1, 1 mo. USD LIBOR + .450%
2.074% FRN 6/25/36	$	401,191	$	399,810
Home Equity Asset Trust, Series 2005-9, Class M1, 1 mo. USD LIBOR + .615%
2.239% FRN 4/25/36		2,004,073		1,973,798
Option One Mortgage Loan Trust Asset-Backed Certificates, Series 2005-5, Class M1, 1 mo. USD LIBOR + .585%
2.209% FRN 12/25/35		249,665		249,564
				2,623,172
Other Asset-Backed Securities — 24.4%
321 Henderson Receivables LLC, Series 2006-3A, Class A1, 1 mo. USD LIBOR + .200%
1.524% FRN 9/15/41 (a)		54,204		53,208
Affirm Asset Securitization Trust
Series 2021-Z1, Class A, 1.070% 8/15/25 (a)		1,532,937		1,493,446
Series 2021-Z2, Class A, 1.170% 11/16/26 (a)		1,545,932		1,505,954
Series 2022-X1, Class A, 1.750% 2/15/27 (a)		2,037,155		2,001,643
Series 2020-Z2, Class A, 1.900% 1/15/25 (a)		1,781,426		1,759,904
Series 2021-A, Class D, 3.490% 8/15/25 (a)		2,100,000		2,052,553
BHG Securitization Trust, Series 2021-B, Class A
0.900% 10/17/34 (a)		1,560,675		1,489,158
Cascade Funding Mortgage Trust, Series 2021-EBO1, Class A,
0.985% VRN 11/25/50 (a) (c)		2,224,634		2,174,718
Citigroup Mortgage Loan Trust, Series 2006-WFH2, Class M1, 1 mo. USD LIBOR + .405%
2.029% FRN 8/25/36		773,997		773,490
Crossroads Asset Trust, Series 2021-A, Class A2
0.820% 3/20/24 (a)		338,296		333,636
FCI Funding LLC
Series 2021-1A, Class A, 1.130% 4/15/33 (a)		2,495,946		2,442,254
Series 2021-1A, Class B, 1.530% 4/15/33 (a)		1,663,789		1,629,807
First Franklin Mortgage Loan Trust
Series 2006-FF15, Class A5, 1 mo. USD LIBOR + .160% 1.784% FRN 11/25/36		537,770		531,703
Series 2005-FF9, Class A4, 1 mo. USD LIBOR + .720% 2.344% FRN 10/25/35		304,505		304,142
FNA VI LLC, Series 21-1A, Class A
1.350% 1/10/32 (a)		3,816,193		3,566,930

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
FREED ABS Trust, Series 2021-2, Class B
1.030% 6/19/28 (a)	$	2,413,556	$	2,393,022
Gracie Point International Funding
Series 2021-1A, Class A, 1 mo. USD LIBOR + .750% 1.812% FRN 11/01/23 (a)		7,164,245		7,092,195
Series 2022-1A, Class C, 30 day SOFR + 3.500% 4.153% FRN 4/01/24 (a)		2,300,000		2,299,996
Series 2022-1A, Class E, 30 day SOFR + 5.750% 6.403% FRN 4/01/24 (a)		1,287,000		1,286,995
JP Morgan Mortgage Acquisition Trust, Series 2007-CH3, Class A5, 1 mo. USD LIBOR + .260%
1.884% FRN 3/25/37		314,882		311,202
KREF Ltd., Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200%
3.723% FRN 2/15/39 (a)		900,000		831,521
LCM Ltd., Series 19A, Class AR, 3 mo. USD LIBOR + 1.240%
2.284% FRN 7/15/27 (a)		397,306		394,884
Lendingpoint Asset Securitization, Series 2021-A, Class B
1.110% 2/15/29 (a)		2,671,207		2,624,571
Lendmark Funding Trust, Series 2019-2A, Class A
2.780% 4/20/28 (a)		3,655,000		3,575,243
Long Beach Mortgage Loan Trust, Series 2006-WL1, Class 2A4, 1 mo. USD LIBOR + .680%
2.304% FRN 1/25/46		49,409		49,400
Marlette Funding Trust, Series 2019-4A, Class B
2.950% 12/17/29 (a)		166,332		166,318
New Residential Advance Receivables Trust Advance Receivables Backed
Series 2020-T1, Class BT1, 1.823% 8/15/53 (a)		1,000,000		958,053
Series 2020-T1, Class DT1, 3.011% 8/15/53 (a)		1,510,000		1,451,097
NP SPE II LP, Series 2019-1A, Class A1
2.574% 9/20/49 (a)		205,405		194,201
NRZ Advance Receivables Trust, Series 2020-T3, Class CT3
1.814% 10/15/52 (a)		386,000		382,898
Oportun Funding LLC
3.250% 6/15/29 (a)		3,113,544		3,078,852
Orange Lake Timeshare Trust
Series 2016-A, Class A, 2.610% 3/08/29 (a)		315,915		306,643
Series 2016-A, Class B, 2.910% 3/08/29 (a)		418,613		418,089
Pagaya AI Debt Selection Trust
Series 2021-3, Class A, 1.150% 5/15/29 (a)		4,224,199		4,130,552
Series 2022-1, Class A, 2.030% 10/15/29 (a)		12,731,943		12,301,263
RAMP Series Trust, Series 2006-RZ4, Class A3, 1 mo. USD LIBOR + .270%
1.894% FRN 10/25/36		229,272		229,190
Sierra Receivables Funding LLC
Series 2019-3A, Class C, 3.000% 8/20/36 (a)		882,000		845,253
Series 2019-2A, Class C, 3.120% 5/20/36 (a)		776,036		745,647

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2019-1A, Class C, 3.770% 1/20/36 (a)	$	252,964	$	245,633
Series 2018-1A, Class B, 4.036% 4/20/35		272,735		271,914
Series 2019-3A, Class D, 4.180% 8/20/36 (a)		221,252		216,023
Series 2019-1A, Class D, 4.750% 1/20/36 (a)		162,319		160,651
Structured Asset Investment Loan Trust, Series 2005-2, Class M2, 1 mo. USD LIBOR + .735%
2.359% FRN 3/25/35		681,824		678,437
Structured Asset Securities Corp. Mortgage Loan Trust
Series 2006-BC6, Class A4, 1 mo. USD LIBOR + .170% 1.794% FRN 1/25/37		248,167		245,715
Series 2006-WF1, Class M4, 1 mo. USD LIBOR + .645% 2.269% FRN 2/25/36		387,799		387,365
Upstart Securitization Trust
Series 2021-4, Class A, 0.840% 9/20/31 (a)		5,692,799		5,510,206
Series 2020-3, Class A, 1.702% 11/20/30 (a)		496,472		494,692
				76,390,267
Student Loans Asset-Backed Securities — 7.1%
Chase Education Loan Trust, Series 2007-A, Class A4, 3 mo. USD LIBOR + .100%
2.334% FRN 3/28/68		1,756,213		1,703,631
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
1.534% FRN 1/15/37		241,972		219,659
Commonbond Student Loan Trust
Series 2021-AGS, Class B, 1.400% 3/25/52 (a)		176,683		160,978
Series 2019-AGS, Class A2, 1 mo. USD LIBOR + .900% 2.524% FRN 1/25/47 (a)		558,507		557,664
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		11,771		10,964
DRB Prime Student Loan Trust, Series 2017-A, Class A1, 1 mo. USD LIBOR + .850%
2.474% FRN 5/27/42 (a)		582,546		582,638
Edsouth Indenture, No.10 LLC, Series 2015-2, Class B, 1 mo. USD LIBOR + 1.500%
3.124% FRN 12/25/58 (a)		750,000		749,098
ELFI Graduate Loan Program LLC, Series 2018-A, Class A1, 1 mo. USD LIBOR + .750%
1.756% FRN 8/25/42 (a)		782,046		780,909
Goal Capital Funding Trust, Series 2010-1, Class A, 3 mo. USD LIBOR + .700%
2.224% FRN 8/25/48 (a)		124,256		123,907

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
JP Morgan Student Loan Trust, Series 2007-A, Class B, 3 mo. USD LIBOR + .350%
0.628% FRN 6/28/39 (a)	$	227,282	$	208,214
KeyCorp Student Loan Trust, Series 2005-A, Class 2B, 3 mo. USD LIBOR + .730%
2.927% FRN 9/27/38		240,427		239,706
Laurel Road Prime Student Loan Trust
Series 2017-C, Class A1, 1 mo. USD LIBOR + .550% 2.174% FRN 11/25/42 (a)		59,294		59,113
Series 2019-A, Class A1FX, 2.340% 10/25/48 (a)		152,226		150,535
Series 2018-B, Class A2FX, 3.540% 5/26/43 (a)		615,874		614,884
Navient Private Education Refi Loan Trust
Series 2021-A, Class A, 0.840% 5/15/69 (a)		5,956,471		5,431,566
Series 2020-HA, Class A, 1.310% 1/15/69 (a)		1,554,327		1,450,528
Navient Student Loan Trust, Series 2016-7A, Class A, 1 mo. USD LIBOR + 1.150%
2.774% FRN 3/25/66 (a)		1,356,398		1,359,473
Nelnet Private Education Loan Trust, Series 2016-A, Class A1A, 1 mo. USD LIBOR + 1.750%
3.374% FRN 12/26/40 (a)		23,459		23,450
Nelnet Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/25/38		311,687		280,007
Series 2004-3, Class B, 3 mo. USD LIBOR + .350% 1.534% FRN 10/25/40		545,845		503,558
Series 2005-2, Class B, 3 mo. USD LIBOR + .170% 2.266% FRN 3/23/37		523,365		482,980
Series 2006-3, Class B, 3 mo. USD LIBOR + .250% 2.447% FRN 6/25/41		202,015		186,237
Series 2014-2A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 6/25/41 (a)		295,000		294,998
SLC Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .230% 2.059% FRN 12/15/39		252,853		228,812
Series 2005-2, Class B, 3 mo. USD LIBOR + .280% 2.109% FRN 3/15/40		838,466		782,883
SLM Student Loan Trust
Series 2005-5, Class A4, 3 mo. USD LIBOR + .140% 1.324% FRN 10/25/28		631,170		623,287
Series 2006-4, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/25/70		168,442		157,840
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 1.394% FRN 10/25/40		221,556		207,249
Series 2006-2, Class B, 3 mo. USD LIBOR + .220% 1.404% FRN 1/25/41		244,317		229,130
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 1.494% FRN 1/25/55		217,608		206,825
Series 2004-3, Class B, 3 mo. USD LIBOR + .470% 1.654% FRN 10/25/64		168,685		160,864
Series 2003-11, Class B, 3 mo. USD LIBOR + .650% 2.479% FRN 12/15/38		189,523		180,289
SMB Private Education Loan Trust, Series 2019-A, Class A2B, 1 mo. USD LIBOR + .870%
2.194% FRN 7/15/36 (a)		1,081,618		1,066,804

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SoFi Alternative Trust, Series 2019-C, Class PT,
4.314% VRN 1/25/45 (a) (c)	$	571,472	$	564,207
SoFi Professional Loan Program LLC
Series 2016-B, Class A2B, 2.740% 10/25/32 (a)		581,026		580,631
Series 2018-D, Class A2FX, 3.600% 2/25/48 (a)		960,294		954,424
				22,117,942
Whole Loan Collateral Collateralized Mortgage Obligations — 12.7%
Angel Oak Mortgage Trust, Series 2022-2, Class A1,
3.353% VRN 1/25/67 (a) (c)		2,356,010		2,256,876
BRAVO Residential Funding Trust, Series 2021-NQM2, Class A3,
1.435% VRN 3/25/60 (a) (c)		1,050,960		1,005,376
CIM Trust, Series 2019-INV3, Class A11, 1 mo. USD LIBOR + 1.000%
1.956% FRN 8/25/49 (a)		809,851		801,997
COLT Mortgage Loan Trust, Series 2022-1, Class A1,
2.284% VRN 12/27/66 (a) (c)		9,239,255		8,271,595
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (c)		516,396		491,866
Lakeview Trust
Series 2022-1, Class M3, 4.585% 4/25/52 (a)		1,400,000		1,361,260
Series 2022-3, Class M3, 5.437% 5/29/52 (a) (b)		3,300,000		3,285,279
NewRez Warehouse Securitization Trust, Series 2021-1, Class A, 1 mo. USD LIBOR + .750%
2.374% FRN 5/25/55 (a)		5,333,000		5,259,383
Oceanview Trust
Series 2021-1, Class A, 1.219% 12/29/51 (a)		4,384,100		4,341,070
Series 2021-1, Class M3, 3.090% 12/29/51 (a)		2,906,000		2,799,853
Onslow Bay Financial LLC
Series 2021-NQM2, Class A2, 1.357% VRN 5/25/61 (a) (c)		688,983		581,849
Series 2020-EXP1, Class 2A2, 1 mo. USD LIBOR + .950% 2.574% FRN 2/25/60 (a)		405,811		402,732
Opteum Mortgage Acceptance Corp. Asset Backed Pass-Through Certificates, Series 2005-4, Class 1APT, 1 mo. USD LIBOR + .620%
2.244% FRN 11/25/35		22,950		22,927
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
4.474% FRN 2/25/23 (a)		270,000		267,486
PSMC Trust, Series 2020-2, Class A2,
3.000% VRN 5/25/50 (a) (c)		951,388		920,205
Starwood Mortgage Residential Trust
Series 2020-1, Class M1, 2.878% VRN 2/25/50 (a) (c)		1,000,000		959,036
Series 2019-INV1, Class A3, 2.916% VRN 9/27/49 (a) (c)		1,126,290		1,099,998

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Starwood Residential Mortgage Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (c)	$	4,284,594	$	3,968,101
Verus Securitization Trust
Series 2021-3, Class A3, 1.437% VRN 6/25/66 (a) (c)		1,073,471		926,256
Series 2019-INV2, Class A3, 3.219% VRN 7/25/59 (a) (c)		608,552		594,707
				39,617,852
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $173,187,526)				169,014,586
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (d) — 8.6%
Whole Loans — 8.6%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes
Series 2021-DNA6, Class M1, 30 day SOFR + .800% 1.726% FRN 10/25/41 (a)		8,450,000		8,271,261
Series 2021-HQA3, Class M1, 30 day SOFR + .850% 1.776% FRN 9/25/41 (a)		9,459,819		8,937,655
Series 2020-DNA6, Class M1, 30 day SOFR + .900% 1.826% FRN 12/25/50 (a)		3,257		3,254
Series 2022-DNA1, Class M1A, 30 day SOFR + 1.000% 1.926% FRN 1/25/42 (a)		750,000		723,607
Series 2020-DNA1, Class M2, 1 mo. USD LIBOR + 1.700% 3.324% FRN 1/25/50 (a)		1,623,416		1,599,980
Series 2018-DNA3, Class M2A, 1 mo. USD LIBOR + 2.100% 3.724% FRN 9/25/48 (a)		1,273,113		1,269,177
Series 2020-DNA5, Class M2, 30 day SOFR + 2.800% 3.726% FRN 10/25/50 (a)		751,141		752,802
Federal National Mortgage Association Connecticut Avenue Securities Trust
Series 2021-R01, Class 1M1, 30 day SOFR + .750% 1.676% FRN 10/25/41 (a)		2,858,078		2,835,393
Series 2019-R03, Class 1M2, 1 mo. USD LIBOR + 2.150% 3.774% FRN 9/25/31 (a)		1,579,200		1,580,138
Series 2019-R02, Class 1M2, 1 mo. USD LIBOR + 2.300% 3.924% FRN 8/25/31 (a)		831,661		832,344
				26,805,611
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $27,603,207)				26,805,611

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. TREASURY OBLIGATIONS — 25.8%
U.S. Treasury Bonds & Notes — 25.8%
U.S. Treasury Inflation Index
0.125% 7/15/24	$	1,582,555	$	1,599,431
0.125% 10/15/24		2,253,280		2,269,960
0.125% 4/15/25		2,881,580		2,886,363
0.125% 10/15/25		2,701,499		2,703,345
0.125% 4/15/26		1,983,978		1,968,427
0.125% 7/15/26		1,045,341		1,038,508
0.125% 10/15/26		2,697,416		2,677,255
0.125% 4/15/27		302,505		298,153
0.125% 1/15/30		1,797,584		1,720,783
0.125% 7/15/30		2,931,240		2,804,286
0.125% 1/15/31		3,109,120		2,967,266
0.125% 7/15/31		3,154,554		3,010,689
0.125% 1/15/32		1,459,864		1,390,235
0.125% 2/15/51		2,052,437		1,611,938
0.250% 1/15/25		3,905,280		3,933,349
0.250% 7/15/29		2,175,308		2,116,039
0.250% 2/15/50		1,574,034		1,264,930
0.375% 7/15/25		1,858,823		1,879,589
0.375% 1/15/27		1,854,761		1,851,042
0.375% 7/15/27		1,595,241		1,593,185
0.500% 4/15/24		1,203,405		1,220,963
0.500% 1/15/28		1,640,590		1,633,498
0.625% 1/15/26		2,797,973		2,833,467
0.625% 2/15/43		1,005,800		901,265
0.750% 7/15/28		2,729,150		2,756,974
0.750% 2/15/42		1,599,038		1,480,942
0.750% 2/15/45		969,733		882,230
0.875% 1/15/29		1,974,711		1,998,334
0.875% 2/15/47		1,137,578		1,067,290
1.000% 2/15/46		609,965		586,662
1.000% 2/15/49		465,228		455,451
1.375% 2/15/44		1,488,324		1,541,462
1.750% 1/15/28		965,832		1,026,603
2.000% 1/15/26		1,601,996		1,698,851
2.125% 2/15/40		668,680		789,103
2.125% 2/15/41		672,392		789,746
2.375% 1/15/25		2,070,198		2,194,450
2.375% 1/15/27		1,003,345		1,091,987
2.500% 1/15/29		875,108		975,694

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
3.375% 4/15/32	$	814,240	$	1,021,712
3.625% 4/15/28		1,653,123		1,935,209
3.875% 4/15/29		525,426		636,012
U.S. Treasury Note
1.500% 2/29/24		6,400,000		6,253,026
1.875% 2/28/27		3,500,000		3,327,394
				80,683,098
TOTAL U.S. TREASURY OBLIGATIONS (Cost $88,943,059)				80,683,098
TOTAL BONDS & NOTES (Cost $289,733,792)				276,503,295
TOTAL LONG-TERM INVESTMENTS (Cost $289,733,792)				276,503,295
SHORT-TERM INVESTMENTS — 10.9%
Commercial Paper — 10.9%
Alimentation Couchetard, Inc.
2.050% 7/11/22 (a)		2,000,000		1,998,805
Centerpoint Energy, Inc.
1.805% 7/01/22		3,000,000		2,999,845
Dentsply International, Inc.
2.080% 7/07/22 (a)		5,000,000		4,998,201
Enbridge (us), Inc.
1.523% 7/08/22 (a)		4,135,000		4,133,122
Fortive Corp.
2.112% 7/13/22 (a)		3,000,000		2,997,940
Rogers Communications, Inc.
2.286% 7/28/22 (a)		3,000,000		2,995,256
The Southern Co.
1.624% 7/13/22 (a)		1,000,000		999,313
2.030% 7/14/22 (a)		5,000,000		4,996,284
TransCanada PipeLines Ltd.
0.600% 7/14/22 (a)		2,000,000		1,998,514
2.103% 7/25/22 (a)		1,000,000		998,606

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Waste Management, Inc.
0.326% 7/25/22 (a)	$	5,000,000	$	4,993,655
				34,109,541
TOTAL SHORT-TERM INVESTMENTS (Cost $34,116,804)				34,109,541
TOTAL INVESTMENTS — 99.3% (Cost $323,850,596) (e)				310,612,836
Other Assets/(Liabilities) — 0.7%				2,135,378
NET ASSETS — 100.0%			$	312,748,214

Abbreviation Legend

FRN Floating Rate Note

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $208,435,660 or 66.65% of net assets.

(b) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2022, these securities amounted to a value of $8,285,274 or 2.65% of net assets.

(c) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at June 30, 2022.

(d) May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(e) See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Long
U.S. Treasury Long Bond	9/21/22		13	$	1,800,184	$	1,941
Short
U.S. Treasury Ultra 10 Year	9/21/22		8	$	(986,527)	$	(32,473)
U.S. Treasury Ultra Bond	9/21/22		5		(752,101)		(19,618)
U.S. Treasury Note 2 Year	9/30/22		250		(52,066,133)		(437,774)
U.S. Treasury Note 5 Year	9/30/22		11		(1,213,802)		(20,948)
						$	(510,813)

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation (Depreciation)
12-Month USD SOFR	Annually		Fixed 2.882%		Annually		11/23/24	USD	10,000,000	$	(21,549)	$	—	$	(21,549)
12-Month USD SOFR	Annually		Fixed 2.936%		Annually		5/19/25	USD	10,000,000		26,785		—		26,785
Fixed 2.686%	Annually		12-Month USD SOFR		Annually		11/23/32	USD	2,215,000		22,318		—		22,318
Fixed 2.840%	Annually		12-Month USD SOFR		Annually		5/19/33	USD	2,230,000		(11,330)		—		(11,330)
										$	16,224	$	—	$	16,224

OTC Total Return Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference	Frequency	Counterparty	Termination Date	No. of Contracts/ Notional		Value		Upfront Premium Received (Paid)/ Received		Unrealized Appreciation (Depreciation)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	Barclays Bank PLC	11/30/22		60,225,031	$	(1,905,036)	$	—	$	(1,905,036)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	7/29/22		4,163,425		(293,206)		—		(293,206)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	8/31/22		21,313,733		(1,668,789)		—		(1,668,789)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	10/31/22		50,357,539		(2,076,700)		—		(2,076,700)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	7/29/22		2,714,784		(191,187)		—		(191,187)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	8/31/22		43,616,088		(3,414,983)		—		(3,414,983)
0.00%	Maturity	Bloomberg Barclays US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	10/31/22		50,085,111		(2,065,465)		—		(2,065,465)
								$	(11,615,366)	$	—	$	(11,615,366)

Currency Legend

USD U.S. Dollar

MassMutual Core Bond Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 98.0%
CORPORATE DEBT — 37.7%
Aerospace & Defense — 0.3%
The Boeing Co.
5.150% 5/01/30	$	2,275,000	$	2,189,800
5.930% 5/01/60		710,000		650,196
				2,839,996
Agriculture — 1.1%
Altria Group, Inc.
5.800% 2/14/39		1,425,000		1,299,990
BAT Capital Corp.
3.462% 9/06/29		1,125,000		966,276
4.700% 4/02/27		2,855,000		2,791,898
4.758% 9/06/49		805,000		610,439
Imperial Brands Finance PLC
3.875% 7/26/29 (a)		1,627,000		1,467,796
Reynolds American, Inc.
5.850% 8/15/45		1,025,000		863,820
Viterra Finance BV
3.200% 4/21/31 (a)		1,540,000		1,250,108
				9,250,327
Airlines — 0.2%
Spirit Airlines Pass-Through Trust, Series 2015-1, Class A,
4.100% 4/01/28		1,096,517		1,051,127
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 3/01/26		370,841		340,085
				1,391,212
Auto Manufacturers — 0.5%
General Motors Co.
5.150% 4/01/38		785,000		687,173
6.800% 10/01/27		1,995,000		2,103,434
General Motors Financial Co., Inc.
3.100% 1/12/32		1,815,000		1,462,874
				4,253,481
Auto Parts & Equipment — 0.1%
Lear Corp.
3.550% 1/15/52		1,470,000		969,935
Banks — 6.0%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		2,100,000		2,089,882
Bank Hapoalim BM 5 year CMT + 2.155%
3.255% VRN 1/21/32 (a)		2,800,000		2,394,000

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Bank of America Corp.
5 year CMT + 1.200% 2.482% VRN 9/21/36	$	2,930,000	$	2,278,817
5 year CMT + 2.000% 3.846% VRN 3/08/37		2,225,000		1,929,900
4.183% 11/25/27		1,380,000		1,343,273
3 mo. USD LIBOR + 1.310% 4.271% VRN 7/23/29		615,000		593,231
6.110% 1/29/37		1,275,000		1,376,222
7.750% 5/14/38		1,055,000		1,304,665
The Bank of Nova Scotia 3 mo. USD LIBOR + 2.648%
4.650% VRN (b)		3,550,000		3,091,993
Barclays PLC
4.337% 1/10/28		1,600,000		1,531,435
5.200% 5/12/26		1,035,000		1,030,583
BPCE SA SOFR + 1.730%
3.116% VRN 10/19/32 (a)		2,080,000		1,680,647
Citigroup, Inc.
4.450% 9/29/27		1,075,000		1,054,249
6.000% 10/31/33		510,000		533,316
6.625% 6/15/32		500,000		546,268
Credit Suisse Group AG SOFR + 0.980%
1.305% VRN 2/02/27 (a)		2,600,000		2,234,794
Deutsche Bank AG SOFR + 1.318%
2.552% VRN 1/07/28		2,685,000		2,327,347
Discover Bank 5 year USD Swap + 1.730%
4.682% VRN 8/09/28		2,175,000		2,115,412
First Republic Bank
4.375% 8/01/46		1,970,000		1,762,548
The Goldman Sachs Group, Inc.
SOFR + 1.410% 3.102% VRN 2/24/33		1,550,000		1,327,582
5.950% 1/15/27		1,333,000		1,397,183
6.750% 10/01/37		1,565,000		1,739,078
HSBC Holdings PLC
SOFR + 1.285% 2.206% VRN 8/17/29		1,355,000		1,141,293
4.375% 11/23/26		2,151,000		2,108,270
JP Morgan Chase & Co.
SOFR + 2.515% 2.956% VRN 5/13/31		1,350,000		1,168,365
5.600% 7/15/41		1,225,000		1,284,326
Mizrahi Tefahot Bank Ltd. 5 year CMT + 2.250%
3.077% VRN 4/07/31 (a)		3,585,000		3,096,544
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		1,410,000		1,087,190
SOFR + 1.485% 3.217% VRN 4/22/42		1,775,000		1,403,912
SOFR + 2.620% 5.297% VRN 4/20/37		885,000		859,300
National Australia Bank Ltd. 5 year CMT + 1.700%
3.347% VRN 1/12/37 (a)		3,060,000		2,575,445
				50,407,070
Beverages — 0.7%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc.
4.900% 2/01/46		3,425,000		3,237,277
Molson Coors Beverage Co.
4.200% 7/15/46		2,279,000		1,878,421
5.000% 5/01/42		350,000		325,031
				5,440,729
Biotechnology — 0.4%
Amgen, Inc.
3.000% 1/15/52		945,000		675,454

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Bio-Rad Laboratories, Inc.
3.700% 3/15/32 (c)	$	1,980,000	$	1,764,380
CSL Finance PLC
4.625% 4/27/42 (a)		905,000		871,221
				3,311,055
Chemicals — 0.3%
DuPont de Nemours, Inc.
5.319% 11/15/38		1,350,000		1,341,754
Syngenta Finance NV
4.441% 4/24/23 (a)		1,375,000		1,386,290
				2,728,044
Computers — 0.1%
Dell International LLC / EMC Corp.
8.100% 7/15/36		450,000		526,867
Diversified Financial Services — 3.6%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
3.300% 1/30/32		4,560,000		3,644,144
Antares Holdings LP
2.750% 1/15/27 (a)		985,000		794,136
3.950% 7/15/26 (a)		2,725,000		2,368,230
6.000% 8/15/23 (a)		1,310,000		1,323,250
8.500% 5/18/25 (a)		1,185,000		1,231,728
Ares Finance Co. III LLC 5 year CMT + 3.237%
4.125% VRN 6/30/51 (a)		1,875,000		1,561,462
Ares Finance Co. LLC
4.000% 10/08/24 (a)		2,380,000		2,331,443
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		2,970,000		2,429,975
3.250% 2/15/27 (a)		1,945,000		1,693,581
4.250% 4/15/26 (a)		3,296,000		3,056,622
5.500% 1/15/26 (a)		205,000		199,513
Blue Owl Finance LLC
3.125% 6/10/31 (a)		3,455,000		2,673,835
4.125% 10/07/51 (a)		1,875,000		1,248,976
Brookfield Finance, Inc.
4.350% 4/15/30		2,145,000		2,050,994
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		1,852,328		1,403,138
Synchrony Financial
2.875% 10/28/31		1,060,000		805,496
3.950% 12/01/27		1,450,000		1,323,892
				30,140,415
Electric — 0.8%
The Cleveland Electric Illuminating Co.
5.950% 12/15/36		589,000		624,430
CMS Energy Corp.
4.700% 3/31/43		655,000		592,055
4.875% 3/01/44		700,000		668,698
NextEra Energy Capital Holdings, Inc. 5 year CMT + 2.547%
3.800% VRN 3/15/82		1,275,000		1,024,902
Pacific Gas and Electric Co.
2.500% 2/01/31		1,035,000		793,766

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
PG&E Wildfire Recovery Funding LLC
4.674% 12/01/51	$	1,200,000	$	1,205,264
Texas Electric Market Stabilization Funding N LLC
5.167% 2/01/50 (a)		2,000,000		2,023,492
				6,932,607
Entertainment — 0.2%
Magallanes, Inc.
4.279% 3/15/32 (a)		2,080,000		1,865,704
Food — 1.2%
JBS Finance Luxembourg Sarl
3.625% 1/15/32 (a) (c)		6,550,000		5,289,125
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
5.500% 1/15/30 (a)		928,000		880,008
Kraft Heinz Foods Co.
4.875% 10/01/49		1,490,000		1,323,809
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		1,555,000		1,231,264
3.000% 10/15/30 (a)		1,208,000		1,003,989
				9,728,195
Gas — 0.4%
CenterPoint Energy Resources Corp.
6.625% 11/01/37		1,500,000		1,679,329
NiSource, Inc.
4.800% 2/15/44		1,350,000		1,214,232
				2,893,561
Health Care – Services — 0.1%
City of Hope
4.378% 8/15/48		1,275,000		1,192,607
Insurance — 6.8%
Allianz SE 5 year CMT + 2.973%
3.500% VRN (a) (b)		4,400,000		3,625,600
The Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53		3,220,000		2,821,525
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48 (c)		2,454,000		2,192,775
AmTrust Financial Services, Inc.
6.125% 8/15/23		4,330,000		4,335,058
Ascot Group Ltd.
4.250% 12/15/30 (a)		2,215,000		2,003,352
Athene Global Funding
2.673% 6/07/31 (a)		3,080,000		2,476,495
AXIS Specialty Finance LLC 5 year CMT + 3.186%
4.900% VRN 1/15/40		1,670,000		1,402,804
Brighthouse Financial, Inc.
4.700% 6/22/47		1,525,000		1,220,508
5.625% 5/15/30		2,074,000		2,018,168
CNO Financial Group, Inc.
5.250% 5/30/29		2,801,000		2,721,195
Enstar Finance LLC 5 year CMT + 5.468%
5.750% VRN 9/01/40		2,700,000		2,452,188
Enstar Group Ltd.
4.950% 6/01/29		2,050,000		1,965,328

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Global Atlantic Fin Co.
3.125% 6/15/31 (a)	$	4,161,000	$	3,318,740
5 year CMT + 3.796% 4.700% VRN 10/15/51 (a) (c)		3,580,000		2,873,295
Hanwha Life Insurance Co. Ltd. 5 year CMT + 1.850%
3.379% VRN 2/04/32 (a)		2,585,000		2,360,441
Hill City Funding Trust
4.046% 8/15/41 (a)		4,055,000		2,971,170
Jackson Financial, Inc.
5.170% 6/08/27		1,034,000		1,026,497
Liberty Mutual Group, Inc. 5 year CMT + 3.315%
4.125% VRN 12/15/51 (a)		1,225,000		976,723
Markel Corp. 5 year CMT + 5.662%
6.000% VRN (b)		1,755,000		1,735,256
MetLife Capital Trust IV
7.875% 12/15/37 (a)		925,000		997,028
Muenchener Rueckversicherungs-Gesellschaft AG in Muenchen 5 year CMT + 3.982%
5.875% VRN 5/23/42 (a)		1,145,000		1,150,725
Prudential Financial, Inc.
3 mo. USD LIBOR + 3.920% 5.625% VRN 6/15/43		1,300,000		1,265,810
3 mo. USD LIBOR + 2.665% 5.700% VRN 9/15/48		2,171,000		2,108,321
3 mo. USD LIBOR + 4.175% 5.875% VRN 9/15/42		650,000		638,138
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		4,980,000		4,126,780
4.450% 5/12/27 (a)		80,000		77,844
4.750% 4/08/32 (a)		90,000		82,190
Teachers Insurance & Annuity Association of America
4.270% 5/15/47 (a)		1,025,000		917,880
USF&G Capital I
8.500% 12/15/45 (a)		1,015,000		1,344,196
				57,206,030
Internet — 0.2%
Netflix, Inc.
5.875% 11/15/28		1,855,000		1,813,262
Investment Companies — 1.8%
Ares Capital Corp.
2.150% 7/15/26		2,275,000		1,914,627
BlackRock TCP Capital Corp.
3.900% 8/23/24		1,649,000		1,594,386
Blackstone Private Credit Fund
1.750% 9/15/24 (a)		370,000		342,131
2.625% 12/15/26 (a)		3,660,000		3,070,574
Golub Capital BDC, Inc.
2.500% 8/24/26		1,165,000		976,365
3.375% 4/15/24		2,745,000		2,637,731
OWL Rock Core, Income Corp.
4.700% 2/08/27 (a)		2,025,000		1,849,619
Sixth Street Specialty Lending, Inc.
3.875% 11/01/24		2,705,000		2,612,648
				14,998,081
Iron & Steel — 0.1%
Vale Overseas Ltd.
6.875% 11/21/36		1,100,000		1,180,140

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Lodging — 0.3%
Las Vegas Sands Corp.
3.200% 8/08/24	$	2,305,000	$	2,171,022
Media — 0.8%
Charter Communications Operating LLC/Charter Communications Operating Capital
3.900% 6/01/52		750,000		523,898
6.484% 10/23/45		1,905,000		1,856,454
Comcast Corp.
2.937% 11/01/56		1,244,000		868,455
3.450% 2/01/50		675,000		540,573
3.969% 11/01/47		660,000		574,296
Discovery Communications LLC
4.000% 9/15/55		1,186,000		836,109
4.650% 5/15/50		705,000		557,592
Time Warner Cable, Inc.
6.750% 6/15/39		655,000		653,653
				6,411,030
Metal Fabricate & Hardware — 0.3%
The Timken Co.
4.500% 12/15/28		2,730,000		2,669,211
Mining — 0.5%
Glencore Finance Canada Ltd.
5.550% STEP 10/25/42 (a)		857,000		809,503
Glencore Funding LLC
2.625% 9/23/31 (a)		2,995,000		2,419,852
Teck Resources Ltd.
6.000% 8/15/40		1,022,000		1,026,466
				4,255,821
Miscellaneous - Manufacturing — 0.1%
GE Capital International Funding Co. Unlimited Co.
4.418% 11/15/35		427,000		400,519
Oil & Gas — 2.2%
BP Capital Markets PLC
5 year CMT + 4.036% 4.375% VRN (b) (c)		2,675,000		2,534,563
5 year CMT + 4.398% 4.875% VRN (b)		1,540,000		1,341,943
Cenovus Energy, Inc.
6.750% 11/15/39		1,176,000		1,259,289
Devon Energy Corp.
5.600% 7/15/41		1,075,000		1,072,461
EQT Corp.
3.900% 10/01/27		1,870,000		1,740,203
Occidental Petroleum Corp.
6.600% 3/15/46		1,228,000		1,304,136
Ovintiv Exploration, Inc.
5.375% 1/01/26		1,875,000		1,897,593
Ovintiv, Inc.
6.500% 8/15/34		1,110,000		1,162,089
6.500% 2/01/38		530,000		548,478
Patterson-UTI Energy, Inc.
3.950% 2/01/28		2,415,000		2,010,267
5.150% 11/15/29		1,350,000		1,159,895

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Petroleos Mexicanos
5.350% 2/12/28	$	1,925,000	$	1,499,691
6.375% 1/23/45 (c)		640,000		387,200
6.500% 3/13/27		295,000		255,765
6.625% 6/15/38		202,000		131,502
				18,305,075
Oil & Gas Services — 0.7%
Halliburton Co.
5.000% 11/15/45		1,300,000		1,199,601
NOV, Inc.
3.600% 12/01/29		3,570,000		3,214,176
3.950% 12/01/42		1,778,000		1,306,238
				5,720,015
Pharmaceuticals — 0.8%
AbbVie, Inc.
4.700% 5/14/45		1,465,000		1,386,835
Cigna Corp.
4.800% 7/15/46		1,105,000		1,058,690
CVS Health Corp.
5.050% 3/25/48		370,000		356,418
6.125% 9/15/39		895,000		968,598
CVS Pass-Through Trust
5.926% 1/10/34 (a)		1,634,617		1,679,454
Utah Acquisition Sub, Inc.
5.250% 6/15/46		1,750,000		1,437,657
				6,887,652
Pipelines — 2.3%
Energy Transfer LP
6.125% 12/15/45		1,235,000		1,183,273
3 mo. USD LIBOR + 4.028% 6.250% VRN (b) (c)		2,635,000		1,975,179
EnLink Midstream Partners LP
4.150% 6/01/25		2,972,000		2,734,240
4.850% 7/15/26		996,000		918,810
Enterprise Products Operating LLC 3 mo. USD LIBOR + 3.033%
5.250% VRN 8/16/77		2,550,000		2,122,026
MPLX LP 3 mo. USD LIBOR + 4.652%
6.875% VRN (b)		3,550,000		3,371,364
Plains All American Pipeline LP 3 mo. USD LIBOR + 4.110%
6.125% VRN (b)		2,590,000		1,838,900
Plains All American Pipeline LP/PAA Finance Corp.
3.800% 9/15/30		1,570,000		1,391,103
4.700% 6/15/44		1,525,000		1,215,830
6.650% 1/15/37		475,000		475,542
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
6.875% 1/15/29		1,692,000		1,726,686
				18,952,953
Private Equity — 0.4%
Apollo Management Holdings LP 5 year CMT + 3.266%
4.950% VRN 1/14/50 (a)		1,970,000		1,706,467
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		920,000		694,071

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)	$	1,135,000	$	808,929
				3,209,467
Real Estate Investment Trusts (REITS) — 2.1%
Broadstone Net Lease LLC
2.600% 9/15/31		2,050,000		1,676,448
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		2,675,000		2,238,982
Host Hotels & Resorts LP
2.900% 12/15/31		640,000		509,557
3.500% 9/15/30		2,756,000		2,361,936
Invitation Homes Operating Partnership LP
4.150% 4/15/32		520,000		473,426
Kimco Realty Corp.
4.125% 12/01/46		855,000		711,676
4.450% 9/01/47		1,055,000		930,445
Omega Healthcare Investors, Inc.
3.375% 2/01/31		1,800,000		1,465,195
Piedmont Operating Partnership LP
2.750% 4/01/32		1,155,000		894,483
Rexford Industrial Realty LP
2.125% 12/01/30		1,175,000		944,576
Service Properties Trust
4.500% 6/15/23		953,000		885,933
4.950% 10/01/29		1,445,000		989,825
Spirit Realty LP
2.700% 2/15/32		715,000		561,208
3.200% 1/15/27 (c)		425,000		390,627
3.400% 1/15/30		490,000		425,240
4.000% 7/15/29		2,405,000		2,202,028
WP Carey, Inc.
2.450% 2/01/32		302,000		243,601
				17,905,186
Software — 0.3%
Electronic Arts, Inc.
2.950% 2/15/51 (c)		1,150,000		844,096
Microsoft Corp.
2.921% 3/17/52		1,560,000		1,239,932
				2,084,028
Telecommunications — 1.4%
AT&T, Inc.
3.500% 9/15/53		333,000		254,269
3.550% 9/15/55		6,775,000		5,109,839
British Telecommunications PLC
9.625% STEP 12/15/30		725,000		904,132
Crown Castle Towers LLC
4.241% 7/15/28 (a)		1,750,000		1,700,585
Verizon Communications, Inc.
2.875% 11/20/50		1,000,000		713,091
2.987% 10/30/56		2,599,000		1,818,327

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Vodafone Group PLC
5.250% 5/30/48	$	1,245,000	$	1,191,234
				11,691,477
Transportation — 0.1%
CSX Corp.
4.750% 11/15/48		820,000		805,607
Venture Capital — 0.5%
Hercules Capital, Inc.
2.625% 9/16/26		3,662,000		3,164,696
3.375% 1/20/27		1,415,000		1,240,451
				4,405,147
TOTAL CORPORATE DEBT (Cost $363,226,599)				314,943,528
MUNICIPAL OBLIGATIONS — 0.3%
Other Asset-Backed Securities — 0.3%
Louisiana Local Government Environmental Facilities & Community Development Authority, Revenue Bond,
4.475% 8/01/39		2,300,000		2,276,850
TOTAL MUNICIPAL OBLIGATIONS (Cost $2,300,000)				2,276,850
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 28.2%
Commercial Mortgage-Backed Securities — 9.6%
Aventura Mall Trust, Series 2018-AVM, Class C,
4.249% VRN 7/05/40 (a) (d)		4,140,000		4,234,072
BAMLL Commercial Mortgage Securities Trust, Series 2018-DSNY, Class C, 1 mo. USD LIBOR + 1.350%
2.674% FRN 9/15/34 (a)		760,000		722,232
BANK, Series 2020-BN30, Class MCDF,
3.016% VRN 12/15/53 (d)		3,165,000		2,194,209
BBCMS Mortgage Trust
Series 2018-CHRS, Class B, 4.409% VRN 8/05/38 (a) (d)		2,200,000		2,031,014
Series 2018-CHRS, Class C, 4.409% VRN 8/05/38 (a) (d)		1,590,000		1,413,445
Series 2018-CHRS, Class D, 4.409% VRN 8/05/38 (a) (d)		1,220,000		1,021,368
Benchmark Mortgage Trust
Series 2021-B23, Class 360A, 2.852% VRN 2/15/54 (a) (d)		3,150,000		2,502,629
Series 2021-B23, Class 360B, 2.852% VRN 2/15/54 (a) (d)		4,800,000		3,614,537
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (d)		3,100,000		2,398,435
BGME Trust
Series 2021-VR, Class C, 3.094% VRN 1/10/43 (a) (d)		16,248,000		13,665,710
Series 2021-VR, Class D, 3.094% VRN 1/10/43 (a) (d)		3,790,000		3,086,759
BX Commercial Mortgage Trust
Series 2021-SOAR, Class E, 1 mo. USD LIBOR + 1.800% 3.125% FRN 6/15/38 (a)		2,282,708		2,151,194
Series 2021-VOLT, Class E, 1 mo. USD LIBOR + 2.000% 3.324% FRN 9/15/36 (a)		5,343,000		4,991,165
Series 2019-XL, Class F, 1 mo. USD LIBOR + 2.000% 3.324% FRN 10/15/36 (a)		2,221,900		2,137,991
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		1,259,000		1,070,141
COLEM Mortgage Trust, Series 2022-HLNE,
2.543% VRN 4/12/42 (a) (d)		1,900,000		1,535,950

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Commercial Mortgage Pass-Through Certificates
Series 2015-CR23, Class B, 4.183% VRN 5/10/48 (d)	$	1,200,000	$	1,155,069
Series 2015-CR23, Class C, 4.428% VRN 5/10/48 (d)		1,050,000		995,471
Credit Suisse Mortgage Capital Certificates, Series 2019-ICE4, Class E, 1 mo. USD LIBOR + 2.150%
3.474% FRN 5/15/36 (a)		750,000		720,023
DROP Mortgage Trust
Series 2021-FILE, Class C, 1 mo. USD LIBOR + 2.250% 3.570% FRN 10/15/43 (a)		3,365,000		3,178,152
Series 2021-FILE, Class D, 1 mo. USD LIBOR + 2.750% 4.070% FRN 10/15/43 (a)		1,162,000		1,079,896
GS Mortgage Securities Trust, Series 2019-GC39, Class C,
4.005% VRN 5/10/52 (d)		1,357,000		1,203,888
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD LIBOR + 1.750%
3.074% FRN 8/15/38 (a)		3,100,000		2,975,061
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
3.124% FRN 5/15/36 (a)		1,730,000		1,647,885
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD LIBOR + 1.750%
3.074% FRN 3/15/38 (a)		2,505,591		2,336,423
MFT Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		1,185,000		1,007,487
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (d)		1,278,000		1,077,499
MHC Commercial Mortgage Trust, Series 2021-MHC, Class E, 1 mo. USD LIBOR + 2.101%
3.425% FRN 4/15/38 (a)		5,140,000		4,819,237
MKT Mortgage Trust
Series 2020-525M, Class D, 3.039% VRN 2/12/40 (a) (d)		595,000		478,821
Series 2020-525M, Class E, 3.039% VRN 2/12/40 (a) (d)		1,220,000		953,763
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
3.424% FRN 7/15/39 (a)		4,879,000		4,567,653
Wells Fargo Commercial Mortgage Trust
Series 2021-FCMT, Class B, 1 mo. USD LIBOR + 1.850% 3.174% FRN 5/15/31 (a)		3,000,000		2,872,425
Series 2018-C45, Class B, 4.556% 6/16/51		390,000		364,129
				80,203,733
Other Asset-Backed Securities — 13.0%
522 Funding CLO Ltd., Series 2018-3A, Class CR, 3 mo. USD LIBOR + 2.050%
3.113% FRN 10/20/31 (a)		1,250,000		1,170,587
AASET Trust
Series 2020-1A, Class A, 3.351% 1/16/40 (a)		1,081,259		906,939
Series 2021-2A, Class B, 3.538% 1/15/47 (a)		1,150,472		936,402
Anchorage Capital CLO 9 Ltd., Series 2016-9A, Class CR2, 3 mo. USD LIBOR + 2.250%
3.294% FRN 7/15/32 (a)		830,000		781,343
Apidos CLO XXV, Series 2016-25A, Class A2R, 3 mo. USD LIBOR + 1.700%
2.763% FRN 10/20/31 (a)		2,610,000		2,498,422
Ballyrock CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 3.150%
4.628% FRN 11/20/30 (a)		800,000		745,647
Benefit Street Partners CLO V-B Ltd., Series 2018-5BA, Class A1A, 3 mo. USD LIBOR + 1.090%
2.153% FRN 4/20/31 (a)		1,920,000		1,882,879
BRE Grand Islander Timeshare Issuer LLC, Series 2017-1A, Class A
2.940% 5/25/29 (a)		273,863		268,511

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)	$	1,123,031	$	1,001,650
Canyon Capital CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 2.150%
3.194% FRN 10/15/34 (a)		800,000		736,267
Capital Automotive REIT
Series 2020-1A, Class A3, 3.250% 2/15/50 (a)		557,908		525,530
Series 2020-1A, Class A6, 3.810% 2/15/50 (a)		490,432		452,297
Castlelake Aircraft Securitization Trust, Series 2019-1A, Class A
3.967% 4/15/39 (a)		654,347		577,238
CBAM Ltd., Series 2018-6A, Class B1R, Update Replacements.xls: TSFR3M + 2.362%
3.208% FRN 1/15/31 (a)		1,200,000		1,157,789
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
2.043% FRN 4/20/31 (a)		1,000,000		979,264
Clear Creek CLO Ltd., Series 2015-1A, Class AR, 3 mo. USD LIBOR + 1.200%
2.263% FRN 10/20/30 (a)		2,120,000		2,082,050
Eaton Vance CLO Ltd.
Series 2018-1A, Class B, 3 mo. USD LIBOR + 1.750% 2.794% FRN 10/15/30 (a)		1,700,000		1,632,087
Series 2020-1A, Class CR, 3 mo. USD LIBOR + 2.050% 3.094% FRN 10/15/34 (a)		400,000		369,905
Elmwood CLO III Ltd., Series 2019-3A, Class BR, 3 mo. USD LIBOR + 1.650%
2.713% FRN 10/20/34 (a)		1,300,000		1,223,475
Elmwood CLO IV Ltd., Series 2020-1A, Class A, 3 mo. USD LIBOR + 1.240%
2.284% FRN 4/15/33 (a)		1,000,000		973,597
FCI Funding LLC, Series 2019-1A, Class A
3.630% 2/18/31 (a)		47,542		47,566
Flexential Issuer
Series 2021-1A, Class B, 3.720% 11/27/51 (a)		4,000,000		3,745,790
Series 2021-1A, Class C, 6.930% 11/27/51 (a)		4,000,000		3,706,091
Goldentree Loan Management US CLO Ltd., Series 2019-5A, Class CR, 3 mo. USD LIBOR + 2.050%
3.113% FRN 10/20/32 (a)		800,000		748,634
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		2,567,733		2,331,327
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		985,720		915,400
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		482,732		459,625
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		1,022,380		974,457
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (d)		1,268,624		1,196,776
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		461,116		449,096
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		496,430		474,553
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		149,045		144,371
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		480,980		473,355
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		119,820		116,539
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		865,688		852,135
Highbridge Loan Management Ltd., Series 13A-18, Class C, 3 mo. USD LIBOR + 2.150%
3.194% FRN 10/15/30 (a)		1,000,000		940,170
Horizon Aircraft Finance I Ltd., Series 2018-1, Class A
4.458% 12/15/38 (a)		1,010,856		879,495
Horizon Aircraft Finance II Ltd, Series 2019-1, Class A
3.721% 7/15/39 (a)		1,381,337		1,222,276

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Horizon Aircraft Finance III Ltd., Series 2019-2, Class A
3.425% 11/15/39 (a)	$	3,371,310	$	2,924,023
KREF Ltd.
Series 2021-FL2, Class B, 1 mo. USD LIBOR + 1.650% 3.173% FRN 2/15/39 (a)		3,500,000		3,280,591
Series 2021-FL2, Class C, 1 mo. USD LIBOR + 2.000% 3.523% FRN 2/15/39 (a)		5,800,000		5,436,998
Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200% 3.723% FRN 2/15/39 (a)		3,200,000		2,956,519
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		1,853,557		1,652,607
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		1,930,987		1,751,363
Madison Park Funding Ltd.
Series 2018-28A, Class B, 3 mo. USD LIBOR + 1.600% 2.644% FRN 7/15/30 (a)		2,090,000		2,007,063
Series 2018-32A, Class CR, 3 mo. USD LIBOR + 2.000% 3.136% FRN 1/22/31 (a)		1,750,000		1,641,890
Series 2018-29A, Class C, 3 mo. USD LIBOR + 2.200% 3.244% FRN 10/18/30 (a)		680,000		645,542
Mariner Finance Issuance Trust
Series 2021-AA, Class B, 2.330% 3/20/36 (a)		1,771,000		1,623,236
Series 2021-AA, Class C, 2.960% 3/20/36 (a)		835,000		746,150
Mosaic Solar Loans LLC
Series 2017-2A, Class A, 3.820% 6/22/43 (a)		383,775		364,214
Series 2018-1A, Class A, 4.010% 6/22/43 (a)		172,228		168,985
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		170,268		166,833
Neuberger Berman Loan Advisers CLO Ltd., Series 2015-45A, Class B
2.688% 10/14/35 (a)		1,350,000		1,273,261
New Residential Advance Receivables Trust, Series 2020-T1, Class ET1
5.467% 8/15/53 (a)		2,495,000		2,403,993
Octagon Investment Partners 39 Ltd., Series 2018-3A, Class C, 3 mo. USD LIBOR + 2.200%
3.263% FRN 10/20/30 (a)		1,180,000		1,113,957
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD LIBOR + 1.850%
2.913% FRN 10/20/34 (a)		550,000		517,137
Pioneer Aircraft Finance Ltd., Series 2019-1, Class A
3.967% 6/15/44 (a)		1,564,779		1,430,154
Planet Fitness Master Issuer LLC, Series 2019-1A, Class A2
3.858% 12/05/49 (a)		2,910,375		2,637,421
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD LIBOR + 1.170%
2.456% FRN 10/30/34 (a)		2,000,000		1,925,652
Rad CLO 15 Ltd., Series 2021-15A, Class C, 3 mo. USD LIBOR + 2.050%
2.297% FRN 1/20/34 (a)		1,000,000		929,798
Regatta XIV Funding Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.850%
3.034% FRN 10/25/31 (a)		1,030,000		972,552
Sierra Receivables Funding LLC
Series 2021-1A, Class D, 3.170% 11/20/37 (a)		1,060,579		998,269
Series 2018-3A, Class D, 5.200% 9/20/35 (a)		452,061		450,279
Steele Creek CLO Ltd., Series 2018-2A, Class C, 3 mo. USD LIBOR + 2.300%
3.755% FRN 8/18/31 (a)		1,660,000		1,541,044
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD LIBOR + 1.200%
2.824% FRN 11/25/35 (a)		605,219		592,052
Structured Receivables Finance LLC, Series 2010-B, Class A
3.730% 8/15/36 (a)		120,328		117,799

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)	$	580,360	$	548,975
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		1,739,685		1,647,774
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.700%
2.763% FRN 1/20/31 (a)		2,440,000		2,321,738
Thrust Engine Leasing
Series 2021-1A, Class A, 4.163% 7/15/40 (a)		3,597,692		3,193,261
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,633,547		1,402,388
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		1,120,309		960,899
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD LIBOR + 1.650%
2.713% FRN 10/20/32 (a)		1,100,000		1,047,559
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD LIBOR + 1.280%
2.343% FRN 4/20/33 (a)		4,200,000		4,097,314
Vivint Solar Financing V LLC, Series 2018-1A, Class B
7.370% 4/30/48 (a)		2,214,338		2,173,822
Voya CLO Ltd., Series 2015-3A, Class A3R, 3 mo. USD LIBOR + 1.700%
2.763% FRN 10/20/31 (a)		1,500,000		1,422,240
WAVE LLC
Series 2019-1A, Class A, 3.597% 9/15/44 (a)		4,320,846		3,522,835
Series 2017-1A, Class A, 3.844% 11/15/42 (a)		375,235		336,854
Series 2017-1A, Class C, 6.656% 11/15/42 (a)		1,995,423		976,005
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		1,040,923		851,509
Zaxby's Funding LLC, Series 2021-1A, Class A2
3.238% 7/30/51 (a)		1,085,795		959,754
				108,311,844
Student Loans Asset-Backed Securities — 2.8%
College Avenue Student Loans LLC
Series 2019-A, Class B, 3.810% 12/28/48 (a)		1,777,882		1,717,054
Series 2019-A, Class C, 4.460% 12/28/48 (a)		1,188,437		1,155,082
Education Loan Asset-Backed Trust I
Series 2003-1, Class A2, 0.000% FRN 2/01/43 (a) (d)		1,300,000		1,200,527
Series 2003-2, Class 2A1, 0.000% FRN 8/01/43 (a) (d)		1,950,000		1,806,412
Series 2013-1, Class B1, 1 mo. USD LIBOR + 1.000% 2.624% FRN 11/25/33 (a)		819,800		814,020
Higher Education Funding I
Series 2004-1, Class B2, 0.000% FRN 1/01/44 (a) (d)		600,000		522,105
Series 2004-1, Class B1, 1.796% FRN 1/01/44 (a) (d)		600,000		539,059
Laurel Road Prime Student Loan Trust
Series 2017-B, Class BFX, 3.020% 8/25/42 (a)		538,731		529,933
Series 2018-B, Class BFX, 3.720% 5/26/43 (a)		436,918		425,090
Navient Student Loan Trust
Series 2015-3, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 10/25/58		1,200,000		1,187,143
Series 2018-EA, Class B, 4.440% 12/15/59 (a)		730,000		700,268
Nelnet Student Loan Trust
Series 2014-3A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 10/25/50 (a)		975,000		974,993
Series 2014-5A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 5/26/54 (a)		1,300,000		1,299,992
Series 2015-2A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 5/26/54 (a)		1,130,000		1,129,993
Series 2015-3A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 6/25/54 (a)		1,100,000		1,099,992

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2019-5, Class B, 3.450% 10/25/67 (a)	$	2,850,000	$	2,497,315
SLC Student Loan Trust, Series 2005-1, Class B, 3 mo. USD LIBOR + .200%
1.611% FRN 2/15/45		1,190,555		1,106,426
SLM Student Loan Trust
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 1.394% FRN 10/25/40		1,554,780		1,454,377
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 1.494% FRN 1/25/55		1,055,067		1,002,790
SoFi Alternative Trust, Series 2019-C, Class PT,
4.314% VRN 1/25/45 (a) (d)		2,654,497		2,620,750
				23,783,321
Whole Loan Collateral Collateralized Mortgage Obligations — 2.8%
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
2.560% VRN 8/25/34 (d)		35,171		33,785
CSMC, Series 2021-NQM3, Class M1,
2.317% VRN 4/25/66 (a) (d)		1,670,000		1,375,266
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (d)		4,917,108		4,064,489
JP Morgan Mortgage Trust, Series 2017-1, Class A11,
3.458% VRN 1/25/47 (a) (d)		551,057		502,595
New Residential Mortgage Loan Trust, Series 2021-INV1, Class A4,
2.500% VRN 6/25/51 (a) (d)		2,949,456		2,438,025
NewRez Warehouse Securitization Trust, Series 2021-1, Class D, 1 mo. USD LIBOR + 1.400%
3.024% FRN 5/25/55 (a)		3,340,000		3,169,468
NMLT Trust, Series 2021-INV1, Class M1,
2.711% VRN 5/25/56 (a) (d)		3,723,000		3,049,071
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
4.474% FRN 2/25/23 (a)		1,180,000		1,169,013
Sequoia Mortgage Trust, Series 2018-CH2, Class A3,
4.000% VRN 6/25/48 (a) (d)		238,212		234,673
STAR Trust, Series 2021-1, Class M1,
2.363% VRN 5/25/65 (a) (d)		5,273,000		4,579,721
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (d)		1,840,000		1,453,973
Verus Securitization Trust, Series 2021-R3, Class M1,
2.411% VRN 4/25/64 (a) (d)		1,491,000		1,369,180
Wells Fargo Mortgage Backed Securities Trust, Series 2019-1, Class A1,
3.958% VRN 11/25/48 (a) (d)		55,750		55,597
				23,494,856
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $258,430,264)				235,793,754
SOVEREIGN DEBT OBLIGATIONS — 0.5%
Mexico Government International Bond
3.500% 2/12/34		2,030,000		1,663,776
4.750% 3/08/44		3,028,000		2,486,189
				4,149,965
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $5,060,264)				4,149,965

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 25.9%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. Series 2178, Class PB 7.000% 8/15/29	$	76,354	$	80,844
Pass-Through Securities — 25.9%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		4,687,647		4,098,997
Pool #RA4255 2.000% 1/01/51		9,823,675		8,596,208
Pool #SD0905 3.000% 3/01/52		3,866,655		3,625,308
Pool #RA2483 3.500% 6/01/50		6,215,996		6,046,606
Pool #Z40047 4.000% 10/01/41		79,892		81,146
Federal National Mortgage Association
Pool #FM8596 2.500% 9/01/51		2,494,456		2,263,561
Pool #MA3029 3.000% 6/01/32		2,003,685		1,987,188
Pool #MA3090 3.000% 8/01/32		674,124		668,364
Pool #FS1075 3.000% 3/01/52		3,897,465		3,655,414
Pool #CB3304 3.000% 4/01/52		5,852,466		5,489,000
Pool #CB3305 3.000% 4/01/52		6,917,378		6,479,128
Pool #775539 12 mo. USD LIBOR + 1.641% 3.391% FRN 5/01/34		43,180		44,152
Pool #AS1304 3.500% 12/01/28		566,389		568,481
Pool #MA1356 3.500% 2/01/43		3,996,801		3,928,790
Pool #CA6096 3.500% 6/01/50		7,594,633		7,385,302
Pool #FM4017 3.500% 8/01/50		411,036		399,418
Pool #CB3842 3.500% 6/01/52		10,836,902		10,473,859
Pool #CA1909 4.500% 6/01/48		2,432,275		2,478,830
Pool #AD6437 5.000% 6/01/40		235,445		247,230
Pool #AD6996 5.000% 7/01/40		1,474,478		1,549,281
Pool #AL8173 5.000% 2/01/44		472,942		498,182
Government National Mortgage Association
Pool #781038 6.500% 5/15/29		22,655		24,049
Pool #781468 6.500% 7/15/32		1,661		1,797
Pool #781496 6.500% 9/15/32		7,877		8,477
Pool #345964 7.000% 11/15/23		50		51
Pool #380866 7.000% 3/15/24		184		187
Pool #781124 7.000% 12/15/29		3,085		3,299
Pool #781319 7.000% 7/15/31		59,144		63,932
Pool #581417 7.000% 7/15/32		9,098		9,708
Pool #565982 7.000% 7/15/32		11,520		12,565
Pool #357262 7.500% 9/15/23		166		168
Pool #441009 8.000% 11/15/26		459		487
Pool #522777 8.000% 12/15/29		3,478		3,746
Pool #523043 8.000% 3/15/30		117		128
Pool #529134 8.000% 3/15/30		1,247		1,367
Pool #477036 8.000% 4/15/30		132		144
Pool #503157 8.000% 4/15/30		10,650		11,668
Pool #528714 8.000% 4/15/30		984		1,080
Pool #544640 8.000% 11/15/30		8,521		9,385
Pool #531298 8.500% 8/15/30		636		692
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		3,138,000		2,996,843
Pool #MA6283 3.000% 11/20/49		5,562,798		5,299,528
Pool #MA6409 3.000% 1/20/50		5,745,508		5,470,898
Pool #MA4321 3.500% 3/20/47		3,454,131		3,397,546
Government National Mortgage Association II TBA
3.000% 1/01/52 (f)		8,450,000		7,977,328
3.500% 2/01/52 (f)		9,780,000		9,512,578

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Uniform Mortgage Backed Securities TBA
2.500% 1/01/52 (f)	$	19,125,000	$	17,230,430
3.000% 2/01/52 (f)		18,075,000		16,860,586
3.500% 3/01/52 (f)		14,700,000		14,155,641
4.000% 4/01/52 (f)		40,775,000		40,258,943
4.500% 5/01/52 (f)		17,900,000		17,989,500
5.000% 6/01/52 (f)		4,575,000		4,672,219
				216,539,415
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $224,465,635)				216,620,259
U.S. TREASURY OBLIGATIONS — 5.4%
U.S. Treasury Bonds & Notes — 5.4%
U.S. Treasury Bond
2.250% 8/15/49 (g)		30,700,000		25,399,491
3.500% 2/15/39		16,000,000		16,782,501
U.S. Treasury Note
1.875% 2/15/32		3,300,000		2,997,844
				45,179,836
TOTAL U.S. TREASURY OBLIGATIONS (Cost $53,740,301)				45,179,836
TOTAL BONDS & NOTES (Cost $907,223,063)				818,964,192
	Number of Shares
MUTUAL FUNDS — 0.2%
Diversified Financial Services — 0.2%
State Street Navigator Securities Lending Government Money Market Portfolio (h)		1,500,170		1,500,170
TOTAL MUTUAL FUNDS (Cost $1,500,170)				1,500,170
TOTAL LONG-TERM INVESTMENTS (Cost $908,723,233)				820,464,362
	Principal Amount
SHORT-TERM INVESTMENTS — 16.3%
Commercial Paper — 16.2%
Alimentation Couche-Tard, Inc.
1.502% 7/08/22 (a)	$	7,000,000		6,996,999
Alimentation Couchetard, Inc.
1.989% 7/07/22 (a)		7,000,000		6,997,387
2.050% 7/11/22 (a)		4,000,000		3,997,610
Centerpoint Engy, Inc.
1.805% 7/01/22		5,000,000		4,999,741
Cigna Corp.
2.032% 7/28/22 (a)		10,000,000		9,984,188
Dentsply International, Inc.
2.080% 7/07/22 (a)		12,000,000		11,995,683

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
2.131% 7/12/22 (a)	$	7,000,000	$	6,995,581
Fiserv, Inc.
2.050% 7/18/22 (a)		5,000,000		4,995,085
Fortive Corp.
2.112% 7/18/22 (a)		5,000,000		4,995,135
2.112% 7/13/22 (a)		11,000,000		10,992,445
Reckitt Benckiser Treasury Services PLC
2.001% 7/21/22 (a)		5,000,000		4,994,887
Rogers Communications, Inc.
2.286% 7/28/22 (a)		15,000,000		14,976,282
Southern Power Co.
2.030% 7/06/22 (a)		9,000,000		8,997,231
Tampa Electric Co.
2.030% 7/14/22 (a)		7,300,000		7,295,458
2.112% 7/12/22 (a)		5,000,000		4,997,357
TransCanada PipeLines Ltd.
0.600% 7/14/22 (a)		8,000,000		7,994,054
2.103% 7/25/22 (a)		1,000,000		998,606
Waste Management, Inc.
0.326% 7/25/22 (a)		5,000,000		4,993,655
0.417% 11/09/22 (a)		7,000,000		6,930,854
				135,128,238
Repurchase Agreement — 0.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (i)		760,450		760,450
TOTAL SHORT-TERM INVESTMENTS (Cost $135,956,676)				135,888,688
TOTAL INVESTMENTS — 114.5% (Cost $1,044,679,909) (j)				956,353,050
Other Assets/(Liabilities) — (14.5)%				(120,750,467)
NET ASSETS — 100.0%			$	835,602,583

Abbreviation Legend

CLO Collateralized Loan Obligation

FRN Floating Rate Note

STEP Step Up Bond

TBA To Be Announced

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $454,433,647 or 54.38% of net assets.

(b) Security is perpetual and has no stated maturity date.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $5,346,007 or 0.64% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $3,992,103 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(d) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at June 30, 2022.

(e) May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(f) A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(g) All or a portion of this security is pledged/held as collateral for open derivatives.

(h) Represents investment of security lending cash collateral. (Note 2).

(i) Maturity value of $760,455. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $775,750.

(j) See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Long
U.S. Treasury Long Bond	9/21/22		92	$	12,804,914	$	(51,414)
U.S. Treasury Ultra Bond	9/21/22		127		20,118,021		(516,365)
U.S. Treasury Note 2 Year	9/30/22		522		110,067,799		(439,642)
U.S. Treasury Note 5 Year	9/30/22		359		40,575,393		(277,643)
						$	(1,285,064)
Short
U.S. Treasury Ultra 10 Year	9/21/22		213	$	(27,289,054)	$	158,179

MassMutual Diversified Bond Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 0.7%
PREFERRED STOCK — 0.7%
Financial — 0.7%
Insurance — 0.7%
Equitable Holdings, Inc.
4.300%		45,600	$	816,696
Selective Insurance Group, Inc.
4.600%		18,825		349,769
				1,166,465
TOTAL PREFERRED STOCK (Cost $1,610,625)				1,166,465
TOTAL EQUITIES (Cost $1,610,625)				1,166,465
	Principal Amount
BONDS & NOTES — 96.7%
CORPORATE DEBT — 47.4%
Aerospace & Defense — 0.7%
BAE Systems PLC
3.000% 9/15/50 (a)	$	230,000		164,486
The Boeing Co.
5.930% 5/01/60		140,000		128,208
TransDigm, Inc.
5.500% 11/15/27		250,000		211,562
6.250% 3/15/26 (a)		500,000		482,350
6.375% 6/15/26		225,000		210,375
				1,196,981
Agriculture — 1.0%
Altria Group, Inc.
5.800% 2/14/39		300,000		273,682
BAT Capital Corp.
4.700% 4/02/27		510,000		498,728
4.758% 9/06/49		165,000		125,121
Imperial Brands Finance PLC
3.875% 7/26/29 (a)		545,000		491,671
Reynolds American, Inc.
5.850% 8/15/45		150,000		126,413

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Viterra Finance BV
3.200% 4/21/31 (a)	$	280,000	$	227,292
				1,742,907
Airlines — 0.3%
Alaska Airlines Pass Through Trust, 2020-1 Class A,
4.800% 2/15/29 (a)		397,970		393,125
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27		68,044		62,401
				455,526
Auto Manufacturers — 0.4%
General Motors Co.
5.150% 4/01/38		230,000		201,337
5.200% 4/01/45		225,000		189,796
6.800% 10/01/27		335,000		353,208
				744,341
Auto Parts & Equipment — 0.1%
Lear Corp.
3.550% 1/15/52		305,000		201,245
Banks — 6.2%
Bank Hapoalim BM 5 year CMT + 2.155%
3.255% VRN 1/21/32 (a)		600,000		513,000
Bank of America Corp.
5 year CMT + 1.200% 2.482% VRN 9/21/36		580,000		451,097
5 year CMT + 2.000% 3.846% VRN 3/08/37		460,000		398,991
3 mo. USD LIBOR + 1.310% 4.271% VRN 7/23/29		200,000		192,921
6.110% 1/29/37		190,000		205,084
7.750% 5/14/38		125,000		154,581
The Bank of Nova Scotia 3 mo. USD LIBOR + 2.648%
4.650% VRN (b)		575,000		500,816
Barclays PLC
5.200% 5/12/26		610,000		607,397
BPCE SA SOFR + 1.730%
3.116% VRN 10/19/32 (a)		450,000		363,601
Citigroup, Inc.
4.450% 9/29/27		485,000		475,638
6.000% 10/31/33		85,000		88,886
Credit Suisse Group AG SOFR + 0.980%
1.305% VRN 2/02/27 (a)		550,000		472,745
First Republic Bank
4.375% 8/01/46		210,000		187,886
The Goldman Sachs Group, Inc.
5.150% 5/22/45		290,000		276,545
5.950% 1/15/27		170,000		178,185
6.750% 10/01/37		165,000		183,353
HSBC Holdings PLC
SOFR + 1.285% 2.206% VRN 8/17/29		267,000		224,890
6.500% 9/15/37		125,000		134,318
7.350% 11/27/32		415,000		476,480
Huntington Bancshares, Inc. 3 mo. USD LIBOR + 2.880%
5.700% VRN (b)		510,000		437,654
Intesa Sanpaolo SpA 1 year CMT + 2.600%
4.198% VRN 6/01/32 (a)		560,000		411,177

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
JP Morgan Chase & Co.
SOFR + 2.515% 2.956% VRN 5/13/31	$	235,000	$	203,382
4.950% 6/01/45		170,000		163,050
Mizrahi Tefahot Bank Ltd. 5 year CMT + 2.250%
3.077% VRN 4/07/31 (a)		1,225,000		1,058,094
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		280,000		215,896
SOFR + 1.485% 3.217% VRN 4/22/42		310,000		245,190
SOFR + 2.620% 5.297% VRN 4/20/37		185,000		179,628
NBK Tier 1 Financing 2 Ltd. 6 year CMT + 2.832%
4.500% VRN (a) (b)		685,000		643,968
Nordea Bank Abp 5 year CMT + 4.110%
6.625% VRN (a) (b) (c)		275,000		262,328
SVB Financial Group
10 year CMT + 3.064% 4.100% VRN (b)		210,000		144,366
5 year CMT + 3.074% 4.250% VRN (b)		590,000		445,173
				10,496,320
Beverages — 0.7%
Anheuser-Busch InBev Worldwide, Inc.
4.600% 4/15/48		255,000		230,166
8.200% 1/15/39		250,000		324,066
Bacardi Ltd.
5.150% 5/15/38 (a)		200,000		190,305
Molson Coors Beverage Co.
4.200% 7/15/46		366,000		301,668
5.000% 5/01/42		135,000		125,369
				1,171,574
Biotechnology — 0.3%
Amgen, Inc.
3.000% 1/15/52		190,000		135,805
CSL Finance PLC
4.750% 4/27/52 (a)		475,000		456,844
				592,649
Building Materials — 0.2%
Standard Industries, Inc.
4.375% 7/15/30 (a)		200,000		157,750
4.750% 1/15/28 (a)		151,000		128,602
				286,352
Chemicals — 0.7%
Alpek SAB de CV
3.250% 2/25/31 (a)		560,000		448,986
DuPont de Nemours, Inc.
5.319% 11/15/38		270,000		268,351
Syngenta Finance NV
4.892% 4/24/25 (a)		500,000		501,665
				1,219,002
Commercial Services — 0.0%
ERAC USA Finance LLC
7.000% 10/15/37 (a)		50,000		58,845

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Computers — 0.4%
Dell International LLC / EMC Corp.
8.100% 7/15/36	$	100,000	$	117,082
8.350% 7/15/46		275,000		344,105
Leidos, Inc.
5.500% 7/01/33		226,000		217,525
				678,712
Distribution & Wholesale — 0.3%
H&E Equipment Services, Inc.
3.875% 12/15/28 (a)		600,000		485,250
Diversified Financial Services — 5.6%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
3.400% 10/29/33		935,000		740,608
Ally Financial, Inc.
5 year CMT + 3.868% 4.700% VRN (b)		600,000		475,809
7 year CMT + 3.481%, 4.700% VRN (b)		570,000		420,489
8.000% 11/01/31		376,000		418,969
Antares Holdings LP
2.750% 1/15/27 (a)		645,000		520,018
3.750% 7/15/27 (a)		605,000		509,395
6.000% 8/15/23 (a)		285,000		287,883
8.500% 5/18/25 (a)		330,000		343,013
Ares Finance Co. III LLC 5 year CMT + 3.237%
4.125% VRN 6/30/51 (a)		360,000		299,801
Ares Finance Co. LLC
4.000% 10/08/24 (a)		375,000		367,349
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		375,000		306,815
3.250% 2/15/27 (a)		175,000		152,379
4.250% 4/15/26 (a)		485,000		449,776
4.375% 5/01/26 (a)		480,000		445,168
5.500% 1/15/26 (a)		135,000		131,386
BGC Partners, Inc.
4.375% 12/15/25		585,000		570,822
Blue Owl Finance LLC
3.125% 6/10/31 (a)		910,000		704,252
4.125% 10/07/51 (a)		375,000		249,795
Bread Financial Holdings, Inc.
7.000% 1/15/26 (a) (c)		200,000		190,980
Coinbase Global, Inc.
3.625% 10/01/31 (a)		734,000		406,775
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		638,918		483,980
Nomura Holdings, Inc.
5.099% 7/03/25 (d)		485,000		487,518
OneMain Finance Corp.
4.000% 9/15/30		220,000		162,868
Synchrony Financial
2.875% 10/28/31		215,000		163,379
3.950% 12/01/27		300,000		273,909
				9,563,136
Electric — 1.1%
Berkshire Hathaway Energy Co.
5.950% 5/15/37		120,000		130,938

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
The Cleveland Electric Illuminating Co.
5.950% 12/15/36	$	175,000	$	185,527
CMS Energy Corp.
4.700% 3/31/43		115,000		103,949
4.875% 3/01/44		180,000		171,951
Elwood Energy LLC
8.159% 7/05/26		93,602		93,134
Enel Finance International NV
6.000% 10/07/39 (a)		175,000		174,691
NextEra Energy Capital Holdings, Inc. 5 year CMT + 2.547%
3.800% VRN 3/15/82		580,000		466,230
Pacific Gas and Electric Co.
3.750% 7/01/28		320,000		282,974
4.300% 3/15/45		195,000		142,449
Virginia Electric & Power Co.
6.000% 1/15/36		100,000		110,874
				1,862,717
Entertainment — 0.1%
Live Nation Entertainment, Inc.
5.625% 3/15/26 (a)		77,000		73,150
Magallanes, Inc.
4.279% 3/15/32 (a)		200,000		179,395
				252,545
Food — 0.8%
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
5.500% 1/15/30 (a)		700,000		663,799
Kraft Heinz Foods Co.
4.875% 10/01/49		315,000		279,866
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		375,000		296,928
3.000% 10/15/30 (a)		206,000		171,210
				1,411,803
Gas — 0.2%
NiSource, Inc.
4.800% 2/15/44		295,000		265,332
Home Builders — 0.4%
Mattamy Group Corp.
4.625% 3/01/30 (a)		35,000		25,579
5.250% 12/15/27 (a)		227,000		185,373
Taylor Morrison Communities, Inc.
5.750% 1/15/28 (a)		500,000		448,631
				659,583
Insurance — 7.6%
Allianz SE 5 year CMT + 2.973%
3.500% VRN (a) (b)		1,176,000		969,024
The Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53		640,000		560,800
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48		485,000		433,372
Ascot Group Ltd.
4.250% 12/15/30 (a)		450,000		407,002

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
AXIS Specialty Finance LLC 5 year CMT + 3.186%
4.900% VRN 1/15/40	$	490,000	$	411,601
Brighthouse Financial, Inc.
3.850% 12/22/51		575,000		393,453
4.700% 6/22/47		500,000		400,167
CNO Financial Group, Inc.
5.250% 5/30/29		791,000		768,463
Enstar Finance LLC 5 year CMT + 5.468%
5.750% VRN 9/01/40		1,060,000		962,711
Enstar Group Ltd.
4.950% 6/01/29		350,000		335,544
Equitable Holdings, Inc. 5 year CMT + 4.736%
4.950% VRN (b) (c)		505,000		474,556
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		380,000		303,081
5 year CMT + 3.796% 4.700% VRN 10/15/51 (a)		1,170,000		939,038
Hanwha Life Insurance Co. Ltd. 5 year CMT + 1.850%
3.379% VRN 2/04/32 (a)		520,000		474,828
Hill City Funding Trust
4.046% 8/15/41 (a)		490,000		359,032
Jackson Financial, Inc.
3.125% 11/23/31 (a) (c)		550,000		439,213
Kyobo Life Insurance Co.
5.900% 6/15/52 (a)		461,000		458,386
Liberty Mutual Group, Inc. 5 year CMT + 3.315%
4.125% VRN 12/15/51 (a)		265,000		211,291
Markel Corp. 5 year CMT + 5.662%
6.000% VRN (b)		735,000		726,731
MetLife Capital Trust IV
7.875% 12/15/67 (a)		325,000		350,307
Prudential Financial, Inc.
5 year CMT + 3.162% 5.125% VRN 3/01/52		565,000		521,580
3 mo. USD LIBOR + 3.920% 5.625% VRN 6/15/43		200,000		194,740
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		570,000		472,342
4.750% 4/08/32 (a)		790,000		721,444
Unum Group
4.125% 6/15/51		460,000		341,331
USF&G Capital I
8.500% 12/15/45 (a)		95,000		125,811
XLIT Ltd.
5.500% 3/31/45		200,000		208,209
				12,964,057
Internet — 0.3%
Expedia Group, Inc.
2.950% 3/15/31		660,000		526,614
Investment Companies — 2.8%
Ares Capital Corp.
2.150% 7/15/26		560,000		471,293
Blackstone Private Credit Fund
1.750% 9/15/24 (a)		625,000		577,923
2.625% 12/15/26 (a)		330,000		276,855
4.000% 1/15/29 (a)		630,000		517,195
Golub Capital BDC, Inc.
2.500% 8/24/26		195,000		163,426
3.375% 4/15/24		562,000		540,038

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Icahn Enterprises LP/ Icahn Enterprises Finance Corp.
4.750% 9/15/24	$	500,000	$	466,511
6.250% 5/15/26		1,000,000		930,000
OWL Rock Core, Income Corp.
4.700% 2/08/27 (a)		410,000		374,491
5.500% 3/21/25 (a)		535,000		514,040
				4,831,772
Iron & Steel — 0.1%
Vale Overseas Ltd.
6.875% 11/21/36		225,000		241,392
Leisure Time — 0.2%
Royal Caribbean Cruises Ltd.
5.500% 8/31/26 (a)		485,000		358,420
Lodging — 0.7%
Las Vegas Sands Corp.
3.900% 8/08/29		525,000		433,898
Travel & Leisure Co.
4.500% 12/01/29 (a)		917,000		710,341
				1,144,239
Media — 1.5%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.000% 2/01/28 (a)		250,000		230,102
Charter Communications Operating LLC/Charter Communications Operating Capital
3.900% 6/01/52		150,000		104,780
Comcast Corp.
4.600% 8/15/45		300,000		284,222
CSC Holdings LLC
4.625% 12/01/30 (a)		250,000		167,500
5.000% 11/15/31 (a)		325,000		219,060
5.750% 1/15/30 (a)		200,000		145,500
Discovery Communications LLC
4.000% 9/15/55		235,000		165,671
4.650% 5/15/50		55,000		43,500
DISH DBS Corp.
7.375% 7/01/28		1,123,000		758,845
Radiate Holdco LLC / Radiate Finance, Inc.
6.500% 9/15/28 (a)		231,000		178,534
Time Warner Cable, Inc.
4.500% 9/15/42		250,000		196,062
6.750% 6/15/39		115,000		114,763
				2,608,539
Mining — 1.6%
AngloGold Ashanti Holdings PLC
3.375% 11/01/28		585,000		496,181
First Quantum Minerals Ltd.
6.875% 3/01/26 (a)		1,000,000		921,000
Freeport-McMoRan, Inc.
5.400% 11/14/34		350,000		341,568
Glencore Finance Canada Ltd.
5.550% STEP 10/25/42 (a)		149,000		140,742

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Novelis Corp.
3.875% 8/15/31 (a)	$	533,000	$	408,678
Perenti Finance Pty Ltd.
6.500% 10/07/25 (a) (c)		325,000		308,912
Teck Resources Ltd.
5.200% 3/01/42		97,000		88,910
				2,705,991
Oil & Gas — 3.2%
Antero Resources Corp.
7.625% 2/01/29 (a)		125,000		127,159
BP Capital Markets PLC
5 year CMT + 4.036% 4.375% VRN (b)		530,000		502,175
5 year CMT + 4.398% 4.875% VRN (b)		310,000		270,131
Cenovus Energy, Inc.
6.750% 11/15/39		175,000		187,394
Devon Energy Corp.
5.000% 6/15/45		289,000		269,328
EQT Corp.
7.500% STEP 2/01/30		380,000		405,639
Nabors Industries, Inc.
7.375% 5/15/27 (a)		564,000		535,800
Occidental Petroleum Corp.
5.875% 9/01/25		300,000		298,695
6.375% 9/01/28		300,000		303,750
6.600% 3/15/46		235,000		249,570
6.950% 7/01/24		177,000		182,310
Ovintiv, Inc.
6.500% 8/15/34		185,000		193,682
6.500% 2/01/38		160,000		165,578
Patterson-UTI Energy, Inc.
3.950% 2/01/28		540,000		449,501
5.150% 11/15/29		615,000		528,397
Petroleos Mexicanos
4.625% 9/21/23		575,000		562,292
5.350% 2/12/28		190,000		148,021
6.375% 1/23/45		35,000		21,175
6.500% 3/13/27		65,000		56,355
6.625% 6/15/38		51,000		33,201
				5,490,153
Oil & Gas Services — 0.9%
Halliburton Co.
5.000% 11/15/45		220,000		203,009
NOV, Inc.
3.600% 12/01/29 (c)		742,000		668,045
3.950% 12/01/42		314,000		230,685
Weatherford International Ltd.
8.625% 4/30/30 (a)		483,000		400,787
				1,502,526
Packaging & Containers — 0.0%
Mauser Packaging Solutions Holding Co.
5.500% 4/15/24 (a)		49,000		46,795

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pharmaceuticals — 1.5%
AbbVie, Inc.
4.700% 5/14/45	$	350,000	$	331,326
AdaptHealth LLC
4.625% 8/01/29 (a)		665,000		546,962
Bausch Health Americas, Inc.
9.250% 4/01/26 (a) (c)		400,000		286,000
Bausch Health Cos., Inc.
5.250% 1/30/30 (a)		250,000		129,081
6.250% 2/15/29 (a)		245,000		131,393
Cigna Corp.
4.800% 7/15/46		185,000		177,247
CVS Health Corp.
5.050% 3/25/48		115,000		110,779
6.125% 9/15/39		25,000		27,056
CVS Pass-Through Trust
5.926% 1/10/34 (a)		170,273		174,943
7.507% 1/10/32 (a)		12,352		13,489
Utah Acquisition Sub, Inc.
3.950% 6/15/26		350,000		330,124
5.250% 6/15/46		350,000		287,531
				2,545,931
Pipelines — 1.7%
Energy Transfer LP
6.125% 12/15/45		230,000		220,367
3 mo. USD LIBOR + 4.028% 6.250% VRN (b)		615,000		461,000
5 year CMT + 5.134% 6.750% VRN (b)		270,000		225,298
EnLink Midstream Partners LP 3 mo. USD LIBOR + 4.110%
6.000% VRN (b)		375,000		250,127
MPLX LP 3 mo. USD LIBOR + 4.652%
6.875% VRN (b)		850,000		807,228
Plains All American Pipeline LP/PAA Finance Corp.
3.800% 9/15/30		265,000		234,804
4.700% 6/15/44		260,000		207,289
6.650% 1/15/37		175,000		175,200
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
6.875% 1/15/29		246,000		251,043
				2,832,356
Private Equity — 0.3%
Apollo Management Holdings LP 5 year CMT + 3.266%
4.950% VRN 1/14/50 (a)		325,000		281,524
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		160,000		120,708
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		230,000		163,924
				566,156
Real Estate Investment Trusts (REITS) — 2.0%
Broadstone Net Lease LLC
2.600% 9/15/31		405,000		331,201
Host Hotels & Resorts LP
2.900% 12/15/31		130,000		103,504
3.500% 9/15/30		476,000		407,939

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Invitation Homes Operating Partnership LP
4.150% 4/15/32	$	110,000	$	100,148
Iron Mountain, Inc.
5.250% 7/15/30 (a)		250,000		217,349
Omega Healthcare Investors, Inc.
3.625% 10/01/29		640,000		544,315
4.750% 1/15/28		202,000		191,984
Piedmont Operating Partnership LP
2.750% 4/01/32		235,000		181,994
Rexford Industrial Realty LP
2.125% 12/01/30		246,000		197,758
Service Properties Trust
4.950% 10/01/29		590,000		404,150
Spirit Realty LP
2.700% 2/15/32		120,000		94,189
3.200% 1/15/27		220,000		202,207
3.400% 1/15/30		325,000		282,047
Ventas Realty LP
5.700% 9/30/43		85,000		86,670
WP Carey, Inc.
2.450% 2/01/32		61,000		49,204
				3,394,659
Retail — 0.2%
Nordstrom, Inc.
4.250% 8/01/31		440,000		333,445
Telecommunications — 2.3%
Altice France SA
5.125% 7/15/29 (a)		442,000		333,710
AT&T, Inc.
3.500% 9/15/53		407,000		310,773
3.550% 9/15/55		814,000		613,935
British Telecommunications PLC
9.625% STEP 12/15/30		150,000		187,062
Frontier Communications Holdings LLC
6.000% 1/15/30 (a) (c)		1,138,000		879,105
Hughes Satellite Systems Corp.
6.625% 8/01/26		444,000		394,050
Sprint Capital Corp.
6.875% 11/15/28		500,000		525,760
8.750% 3/15/32		141,000		169,690
Verizon Communications, Inc.
2.875% 11/20/50		160,000		114,094
2.987% 10/30/56		233,000		163,013
Vodafone Group PLC
5.250% 5/30/48		255,000		243,988
				3,935,180
Transportation — 0.1%
CSX Corp.
4.750% 11/15/48		145,000		142,455
Trucking & Leasing — 0.3%
AerCap Global Aviation Trust 3 mo. USD LIBOR + 4.300%
6.500% VRN 6/15/45 (a)		600,000		550,706

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Venture Capital — 0.6%
Hercules Capital, Inc.
2.625% 9/16/26	$	738,000	$	637,779
3.375% 1/20/27		340,000		298,059
				935,838
TOTAL CORPORATE DEBT (Cost $94,850,904)				81,002,044
MUNICIPAL OBLIGATIONS — 0.2%
Louisiana Local Government Environmental Facilities & Community Development Authority, Revenue Bond
4.475% 8/01/39		400,000		395,974
TOTAL MUNICIPAL OBLIGATIONS (Cost $400,000)				395,974
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 31.6%
Automobile Asset-Backed Securities — 0.2%
OneMain Direct Auto Receivables Trust, Series 2019-1A, Class D
4.680% 4/14/31 (a)		422,000		421,792
Commercial Mortgage-Backed Securities — 12.8%
Aventura Mall Trust, Series 2018-AVM, Class D,
4.249% VRN 7/05/40 (a) (e)		530,000		466,991
BAMLL Commercial Mortgage Securities Trust
Series 2018-DSNY, Class C, 1 mo. USD LIBOR + 1.350% 2.674% FRN 9/15/34 (a)		150,000		142,546
Series 2019-BPR, Class CMP, 4.024% VRN 11/05/32 (a) (e)		440,000		396,132
Series 2019-BPR, Class DMP, 4.024% VRN 11/05/32 (a) (e)		540,000		481,998
BANK
Series 2020-BN30, Class MCDF, 3.016% VRN 12/15/53 (e)		500,000		346,637
Series 2019-BN17, Class C, 4.669% VRN 4/15/52 (e)		331,000		304,257
BBCMS Mortgage Trust
Series 2018-CHRS, Class B, 4.409% VRN 8/05/38 (a) (e)		400,000		369,275
Series 2018-CHRS, Class C, 4.409% VRN 8/05/38 (a) (e)		280,000		248,908
Series 2018-CHRS, Class D, 4.409% VRN 8/05/38 (a) (e)		270,000		226,040
Benchmark Mortgage Trust
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (e)		500,000		386,844
Series 2020-IG1, Class D, 3.347% VRN 9/15/43 (e)		400,000		279,447
BGME Trust, Series 2021-VR, Class D,
3.094% VRN 1/10/43 (a) (e)		3,100,000		2,524,790
BX Commercial Mortgage Trust
Series 2021-BXMF, Class E, 1 mo. USD LIBOR + 2.427% 3.751% FRN 10/15/26 (a)		1,500,000		1,426,530
Series 2021-VOLT, Class G, 1 mo. USD LIBOR + 2.850% 4.174% FRN 9/15/36 (a)		2,004,000		1,852,634
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD LIBOR + 2.150%
3.474% FRN 12/15/37 (a)		572,453		550,245
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		222,000		188,698
Cold Storage Trust, Series 2020-ICE5, Class E, 1 mo. USD LIBOR + 2.766%
4.090% FRN 11/15/37 (a)		589,794		566,172
Commercial Mortgage Pass-Through Certificates, Series 2015-CR23, Class C,
4.428% VRN 5/10/48 (e)		110,000		104,287
DC Office Trust
Series 2019-MTC, Class D, 3.174% VRN 9/15/45 (a) (e)		357,000		292,344

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2019-MTC, Class E, 3.174% VRN 9/15/45 (a) (e)	$	622,000	$	490,952
DROP Mortgage Trust, Series 2021-FILE, Class D, 1 mo. USD LIBOR + 2.750%
4.070% FRN 10/15/43 (a)		998,000		927,484
GS Mortgage Securities Corp. II, Series 2018-GS10, Class D
3.000% 7/10/51 (a)		599,000		436,314
Hudson Yards Mortgage Trust, Series 2019-30HY, Class E,
3.558% VRN 7/10/39 (a) (e)		630,000		524,943
Jackson Park Trust, Series 2019-LIC, Class D,
3.351% VRN 10/14/39 (a) (e)		686,000		552,053
JP Morgan Chase Commercial Mortgage Securities Trust
Series 2022-OPO, Class C, 3.565% VRN 1/05/39 (a) (e)		700,000		623,873
Series 2019-OSB, Class E, 3.909% VRN 6/05/39 (a) (e)		553,000		479,842
JPMBB Commercial Mortgage Securities Trust, Series 2014-C21, Class C,
4.797% VRN 8/15/47 (e)		300,000		285,607
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD LIBOR + 1.750%
3.074% FRN 8/15/38 (a)		900,000		863,727
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
3.124% FRN 5/15/36 (a)		263,000		250,517
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD LIBOR + 1.750%
3.074% FRN 3/15/38 (a)		424,643		395,973
Med Trust 2021-MDLN, Series 2021-MDLN, Class F, 1 mo. USD LIBOR + 4.000%
5.325% FRN 11/15/38 (a)		2,000,000		1,839,659
MFT Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		205,000		174,291
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (e)		215,000		181,270
MHC Commercial Mortgage Trust, Series 2021-MHC, Class E, 1 mo. USD LIBOR + 2.101%
3.425% FRN 4/15/38 (a)		1,100,000		1,031,354
MKT Mortgage Trust, Series 2020-525M, Class E,
3.039% VRN 2/12/40 (a) (e)		213,000		166,518
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
3.424% FRN 7/15/39 (a)		864,000		808,865
Wells Fargo Commercial Mortgage Trust
Series 2021-FCMT, Class C, 1 mo. USD LIBOR + 2.400% 3.724% FRN 5/15/31 (a)		461,000		438,546
Series 2015-NXS1, Class C, 3.848% VRN 5/15/48 (e)		140,000		129,649
WF-RBS Commercial Mortgage Trust, Series 2012-C8, Class C,
5.031% VRN 8/15/45 (e)		100,000		99,745
				21,855,957
Home Equity Asset-Backed Securities — 0.0%
Credit Suisse Seasoned Loan Trust, Series 2006-1, Class A, 1 mo. USD LIBOR + .480%
2.104% FRN 10/25/34 (a)		18,555		18,545
Other Asset-Backed Securities — 13.2%
522 Funding CLO Ltd., Series 2018-3A, Class CR, 3 mo. USD LIBOR + 2.050%
3.113% FRN 10/20/31 (a)		250,000		234,118
AASET Trust, Series 2019-2, Class C
6.413% 10/16/39 (a)		1,227,028		586,645
AIMCO CLO Series Ltd., Series 2018-AA, Class B, 3 mo. USD LIBOR + 1.400%
2.444% FRN 4/17/31 (a)		250,000		237,735

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Anchorage Capital CLO Ltd., Series 2021-19A, Class A, 3 mo. USD LIBOR + 1.210%
1.375% FRN 10/15/34 (a)	$	1,000,000	$	967,907
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD LIBOR + .900%
2.524% FRN 10/25/34		151,471		147,674
Atrium XV, Series 15A, Class B, 3 mo. USD LIBOR + 1.750%
2.934% FRN 1/23/31 (a)		250,000		240,123
Ballyrock CLO Ltd., Series 2021-17A, Class A1A, 3 mo. USD LIBOR + 1.150%
2.213% FRN 10/20/34 (a)		250,000		241,226
Blackbird Capital Aircraft Lease Securitization Ltd., Series 2016-1A, Class A,
4.213% STEP 12/16/41 (a)		336,658		297,489
BRE Grand Islander Timeshare Issuer LLC
Series 2017-1A, Class A, 2.940% 5/25/29 (a)		47,360		46,434
Series 2017-1A, Class B, 3.240% 5/25/29 (a)		39,123		38,350
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)		1,315,511		1,173,327
Canyon Capital CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 2.150%
3.194% FRN 10/15/34 (a)		250,000		230,084
Capital Automotive REIT, Series 2020-1A, Class B3
4.950% 2/15/50 (a)		671,000		576,338
Castlelake Aircraft Securitization Trust, Series 2019-1A, Class A
3.967% 4/15/39 (a)		154,182		136,013
CIFC Funding Ltd., Series 2017-5A, Class A1, 3 mo. USD LIBOR + 1.180%
2.224% FRN 11/16/30 (a)		250,000		246,808
DataBank Issuer, Series 2021-1A, Class B
2.650% 2/27/51 (a)		300,000		271,567
Diameter Capital CLO Ltd., Series 2021-2A, Class A1, 3 mo. USD LIBOR + 1.220%
2.264% FRN 10/15/36 (a)		500,000		480,492
Elara HGV Timeshare Issuer LLC
Series 2016-A, Class A, 2.730% 4/25/28 (a)		54,443		53,279
Series 2016-A, Class B, 3.220% 4/25/28 (a)		33,197		32,648
Falcon Aerospace Ltd., Series 2019-1, Class C
6.656% 9/15/39 (a)		317,548		206,248
FCI Funding LLC, Series 2019-1A, Class A
3.630% 2/18/31 (a)		6,931		6,935
Goldentree Loan Management US CLO Ltd., Series 2019-5A, Class CR, 3 mo. USD LIBOR + 2.050%
3.113% FRN 10/20/32 (a)		250,000		233,948
Goodgreen Trust
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		159,407		148,035
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		89,120		84,854
Series 2019-2A, Class B, 3.860% 4/15/55 (a)		118,735		109,889
Series 2021-1A, Class C, 5.740% 10/15/56 (a)		516,640		465,517
Gracie Point International Funding, Series 2021-1A, Class C, 1 mo. USD LIBOR + 2.400%
3.462% FRN 11/01/23 (a)		610,000		603,426
Gulf Stream Meridian 6 Ltd., Series 2021-6A, Class A2, 3 mo. USD LIBOR + 1.750%
2.794% FRN 1/15/37 (a)		250,000		237,100
Harbor Park CLO Ltd., Series 2018-1A, Class B1, 3 mo. USD LIBOR + 1.700%
2.763% FRN 1/20/31 (a)		280,000		268,533
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		62,696		61,061

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)	$	84,361	$	80,643
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		32,147		31,139
Series 2016-4A, Class A2, 4.290% 9/20/47 (a)		64,932		64,490
Horizon Aircraft Finance I Ltd., Series 2018-1, Class B
5.270% 12/15/38 (a)		225,200		182,482
Horizon Aircraft Finance II Ltd., Series 2019-1, Class B
4.703% 7/15/39 (a)		273,167		219,979
Horizon Aircraft Finance III Ltd., Series 2019-2, Class A
3.425% 11/15/39 (a)		474,501		411,547
J.G. Wentworth XLIII LLC, Series 2019-1A, Class B
4.510% 8/15/73 (a)		138,000		128,362
KDAC Aviation Finance Ltd., Series 2017-1A, Class A
4.212% 12/15/42 (a)		294,674		234,265
Kestrel Aircraft Fundig Limited, Series 2018-1A, Class A
4.250% 12/15/38 (a)		349,907		307,195
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		320,284		285,561
LoanCore Issuer Ltd., Series 2022-CRE7, Class E, SOFR + 3.750%,
4.529% FRN 1/17/37 (a)		1,000,000		933,987
Lunar Aircraft Ltd.
Series 2020-1A, Class B, 4.335% 2/15/45 (a)		118,062		92,743
Series 2020-1A, Class C, 6.413% 2/15/45 (a)		217,468		165,449
MACH 1, Series 2019-1, Class B
4.335% 10/15/39 (a)		319,562		265,214
Madison Park Funding Ltd.
Series 2018-28A, Class B, 3 mo. USD LIBOR + 1.600% 2.644% FRN 7/15/30 (a)		950,000		912,301
Series 2018-32A, Class CR, 3 mo. USD LIBOR + 2.000% 3.136% FRN 1/22/31 (a)		300,000		281,467
Mariner Finance Issuance Trust, Series 2021-AA, Class D
3.830% 3/20/36 (a)		381,000		344,677
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		28,378		27,805
Neuberger Berman CLO Ltd., Series 2015-20A, Class BRR, 3 mo. USD LIBOR + 1.650%
2.694% FRN 7/15/34 (a)		500,000		474,225
OHA Credit Funding Ltd., Series 2015-11A, Class CR, 3 mo. USD LIBOR + 2.150%
3.213% FRN 1/20/32 (a)		300,000		283,712
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD LIBOR + 1.850%
2.913% FRN 10/20/34 (a)		250,000		235,062
Park Place Securities, Inc., Series 2005-WCW3, Class M1, 1 mo. USD LIBOR + .720%
2.344% FRN 8/25/35		4,578		4,574
Pioneer Aircraft Finance Ltd., Series 2019-1, Class B
4.948% 6/15/44 (a)		341,661		276,765
Planet Fitness Master Issuer LLC, Series 2019-1A, Class A2
3.858% 12/05/49 (a)		496,275		449,731
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD LIBOR + 1.170%
2.456% FRN 10/30/34 (a)		500,000		481,413
Rad CLO 15 Ltd., Series 2021-15A, Class C, 3 mo. USD LIBOR + 2.050%
2.297% FRN 1/20/34 (a)		250,000		232,450
Rad CLO 4 Ltd., Series 2019-4A, Class B1, 3 mo. USD LIBOR + 2.100%
3.284% FRN 4/25/32 (a)		250,000		243,386
Renew, Series 2021-1, Class M
3.210% 11/20/56 (a)		193,623		178,133

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Rockford Tower CLO Ltd., Series 2018-1A, Class B, 3 mo. USD LIBOR + 1.720%
3.198% FRN 5/20/31 (a)	$	250,000	$	239,498
Sierra Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		59,668		57,668
Slam Ltd., Series 2021-1A, Class B
3.422% 6/15/46 (a)		274,688		232,470
Steele Creek CLO Ltd., Series 2018-2A, Class C, 3 mo. USD LIBOR + 2.300%
3.755% FRN 8/18/31 (a)		490,000		454,887
Store Master Funding I-VII and XIV, Series 2019-1, Class A4
4.490% 11/20/49 (a)		760,054		640,003
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		106,703		100,933
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		275,154		260,617
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.700%
2.763% FRN 1/20/31 (a)		490,000		466,251
Thrust Engine Leasing
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,142,510		980,837
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		373,436		320,300
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD LIBOR + 1.650%
2.713% FRN 10/20/32 (a)		250,000		238,082
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD LIBOR + 1.280%
2.343% FRN 4/20/33 (a)		1,000,000		975,551
WAVE LLC, Series 2019-1, Class B
4.581% 9/15/44 (a)		608,521		421,621
Willis Engine Structured Trust III, Series 2017-A, Class A,
4.690% STEP 8/15/42 (a)		332,513		291,153
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		200,474		163,994
Zaxby's Funding LLC, Series 2021-1A, Class A2
3.238% 7/30/51 (a)		217,358		192,126
				22,528,551
Student Loans Asset-Backed Securities — 3.2%
Access Group, Inc., Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500%
3.124% FRN 7/25/58 (a)		130,000		119,668
College Avenue Student Loans LLC
Series 2021-A, Class C, 2.920% 7/25/51 (a)		576,000		544,660
Series 2021-A, Class D, 4.120% 7/25/51 (a)		284,000		264,030
Series 2019-A, Class C, 4.460% 12/28/48 (a)		177,673		172,687
Series 2019-A, Class D, 5.500% 12/28/48 (a)		124,849		122,242
Commonbond Student Loan Trust, Series 2017-AGS, Class C
5.280% 5/25/41 (a)		34,602		33,162
Credit Suisse ABS Repackaging Trust, Series 2013-A, Class B
2.500% 1/25/30 (a)		63,778		61,846
EDvestinU Private Education Loan Issue No 3 LLC, Series 2021-A, Class B
3.500% 11/25/50 (a)		600,000		516,023
Goal Capital Funding Trust, Series 2006-1, Class B, 3 mo. USD LIBOR + .450%
1.974% FRN 8/25/42		482,640		461,595
Navient Student Loan Trust
Series 2018-1A, Class B, 1 mo. USD LIBOR + 1.200% 2.824% FRN 3/25/67 (a)		250,000		238,599
Series 2018-EA, Class B, 4.440% 12/15/59 (a)		140,000		134,298

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Nelnet Private Education Loan Trust, Series 2016-A, Class A1A, 1 mo. USD LIBOR + 1.750%
3.374% FRN 12/26/40 (a)	$	8,753	$	8,750
Nelnet Student Loan Trust
Series 2005-4, Class A4R2, 1.191% FRN 3/22/32 (e)		150,000		148,118
Series 2006-3, Class B, 3 mo. USD LIBOR + .250% 2.447% FRN 6/25/41		96,345		88,821
Series 2012-2A, Class B, 1 mo. USD LIBOR + 1.000% 2.624% FRN 11/25/36 (a)		200,000		196,543
Series 2012-1A, Class B, 1 mo. USD LIBOR + 1.000% 2.624% FRN 6/25/42 (a)		150,000		148,264
Series 2012-4A, Class B, 1 mo. USD LIBOR + 1.000% 2.624% FRN 7/26/49 (a)		350,000		328,483
Series 2014-2A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 6/25/41 (a)		100,000		100,000
Series 2014-5A, Class B, 1 mo. USD LIBOR + 1.500% 3.124% FRN 5/26/54 (a)		100,000		99,999
SLM Student Loan Trust
Series 2006-7, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/27/42		239,554		219,862
Series 2006-4, Class B, 3 mo. USD LIBOR + .200% 1.384% FRN 1/25/70		131,011		122,764
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 1.394% FRN 10/25/40		116,609		109,078
Series 2005-6, Class B, 3 mo. USD LIBOR + .290% 1.474% FRN 1/25/44		256,703		232,939
Series 2005-9, Class B, 3 mo. USD LIBOR + .300% 1.484% FRN 1/25/41		326,800		305,687
Series 2004-3, Class B, 3 mo. USD LIBOR + .470% 1.654% FRN 10/25/64		87,154		83,113
SMB Private Education Loan Trust, Series 2019-A, Class B
4.000% 11/17/42 (a)		185,000		177,616
SoFi Professional Loan Program LLC
Series 2017-C, Class C, 4.210% VRN 7/25/40 (a) (e)		180,000		169,766
Series 2017-A, Class C, 4.430% VRN 3/26/40 (a) (e)		170,000		162,210
South Carolina Student Loan Corp., Series 2015-A, Class A, 1 mo. USD LIBOR + 1.500%
3.124% FRN 1/25/36		55,566		55,599
				5,426,422
Whole Loan Collateral Collateralized Mortgage Obligations — 2.2%
Angel Oak Mortgage Trust I LLC
Series 2019-4, Class M1, 3.459% VRN 7/26/49 (a) (e)		492,000		477,645
Series 2019-2, Class M1, 4.065% VRN 3/25/49 (a) (e)		260,000		256,217
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
2.560% VRN 8/25/34 (e)		5,625		5,403
JP Morgan Mortgage Trust, Series 2017-1, Class A11,
3.458% VRN 1/25/47 (a) (e)		87,850		80,124
New Residential Mortgage Loan Trust, Series 2021-NQM3, Class B1,
3.398% VRN 11/27/56 (a) (e)		3,600,000		2,728,280
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
4.474% FRN 2/25/23 (a)		210,000		208,045
				3,755,714
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $60,367,319)				54,006,981
SOVEREIGN DEBT OBLIGATIONS — 0.4%
Mexico Government International Bond
3.500% 2/12/34		415,000		340,131

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
4.750% 3/08/44	$	414,000	$	339,922
				680,053
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $862,519)				680,053
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (f) — 16.2%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. Series 2178, Class PB 7.000% 8/15/29		4,150		4,394
Pass-Through Securities — 16.2%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		499,148		436,467
Pool #RA4255 2.000% 1/01/51		1,038,626		908,850
Pool #SD0905 3.000% 3/01/52		783,120		734,240
Federal National Mortgage Association
Pool #FM8596 2.500% 9/01/51		503,688		457,065
Pool #MA3029 3.000% 6/01/32		283,759		281,423
Pool #MA3090 3.000% 8/01/32		114,258		113,282
Pool #AR3007 3.000% 2/01/43		92,669		88,767
Pool #FS1075 3.000% 3/01/52		789,360		740,337
Pool #CB3304 3.000% 4/01/52		1,190,332		1,116,407
Pool #CB3305 3.000% 4/01/52		1,443,194		1,351,761
Pool #AS1304 3.500% 12/01/28		77,541		77,828
Pool #MA1356 3.500% 2/01/43		529,416		520,407
Pool #CA6096 3.500% 6/01/50		1,072,893		1,043,320
Pool #FM4017 3.500% 8/01/50		69,964		67,986
Pool #CB3842 3.500% 6/01/52		2,298,060		2,221,074
Pool #CA1909 4.500% 6/01/48		395,727		403,302
Pool #AD6437 5.000% 6/01/40		30,645		32,179
Pool #AD6996 5.000% 7/01/40		192,665		202,439
Pool #AL8173 5.000% 2/01/44		62,496		65,831
Government National Mortgage Association
Pool #579140 6.500% 1/15/32		456		490
Pool #587280 6.500% 9/15/32		687		730
Pool #550659 6.500% 9/15/35		48,546		53,063
Pool #538689 6.500% 12/15/35		7,421		8,142
Pool #780651 7.000% 10/15/27		382		403
Pool #462384 7.000% 11/15/27		221		233
Pool #482668 7.000% 8/15/28		610		648
Pool #581417 7.000% 7/15/32		554		591
Pool #423836 8.000% 8/15/26		253		267
Pool #444619 8.000% 3/15/27		10		10
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		527,395		503,671
Pool #MA6283 3.000% 11/20/49		931,569		887,481
Pool #MA6409 3.000% 1/20/50		965,870		919,706
Pool #MA4321 3.500% 3/20/47		611,669		601,649
Government National Mortgage Association II TBA 3.000% 7/21/52 (d)		1,900,000		1,793,719
Uniform Mortgage Backed Securities TBA
3.000% 7/14/52 (d)		2,900,000		2,705,156
3.500% 7/14/52 (d)		2,450,000		2,359,273
4.000% 7/14/52 (d)		6,600,000		6,516,469

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
4.500% 7/14/52 (d)	$	450,000	$	452,250
				27,666,916
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $28,766,142)				27,671,310
U.S. TREASURY OBLIGATIONS — 0.9%
U.S. Treasury Bonds & Notes — 0.9%
U.S. Treasury Bond
2.250% 8/15/49 (g)		1,770,000		1,464,400
TOTAL U.S. TREASURY OBLIGATIONS (Cost $1,673,607)				1,464,400
TOTAL BONDS & NOTES (Cost $186,920,491)				165,220,762
TOTAL PURCHASED OPTIONS (#) — 0.1% (Cost $1,164)				89,260
	Number of Shares
WARRANTS — 0.0%
Consumer, Non-cyclical — 0.0%
Chemicals — 0.0%
Hercules LLC, Expires 3/31/29, Strike 0.09 (h) (i) (j)		150		4,228
TOTAL WARRANTS (Cost $0)				4,228
MUTUAL FUNDS — 1.0%
Diversified Financial Services — 1.0%
State Street Navigator Securities Lending Government Money Market Portfolio (k)		1,639,645		1,639,645
TOTAL MUTUAL FUNDS (Cost $1,639,645)				1,639,645
TOTAL LONG-TERM INVESTMENTS (Cost $190,171,925)				168,120,360
	Principal Amount
SHORT-TERM INVESTMENTS — 9.2%
Commercial Paper — 7.0%
Duke Energy Corp.
1.928% 7/12/22 (a)	$	2,000,000		1,998,737
Fortive Corp.
2.112% 7/13/22 (a)		3,000,000		2,997,940
The Southern Co.
1.624% 7/13/22 (a)		3,000,000		2,997,940

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Spire, Inc.
1.980% 7/14/22 (a)	$	4,000,000	$	3,997,027
				11,991,644
Repurchase Agreement — 2.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (l)		3,776,202		3,776,202
TOTAL SHORT-TERM INVESTMENTS (Cost $15,768,544)				15,767,846
TOTAL INVESTMENTS — 107.7% (Cost $205,940,469) (m)				183,888,206
Other Assets/(Liabilities) — (7.7)%				(13,157,155)
NET ASSETS — 100.0%			$	170,731,051

Abbreviation Legend

CLO Collateralized Loan Obligation

FRN Floating Rate Note

STEP Step Up Bond

TBA To Be Announced

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $95,474,203 or 55.92% of net assets.

(b) Security is perpetual and has no stated maturity date.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $2,632,774 or 1.54% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $1,056,616 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(d) A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(e) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at June 30, 2022.

(f) May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(g) All or a portion of this security is pledged/held as collateral for open derivatives.

(h) Investment was valued using significant unobservable inputs.

(i) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2022, these securities amounted to a value of $4,228 or 0.00% of net assets.

(j) Non-income producing security.

(k) Represents investment of security lending cash collateral. (Note 2).

(l) Maturity value of $3,776,227. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $3,851,782.

(m) See Note 3 for aggregate cost for federal tax purposes.

(#) OTC Options Purchased

Description

Counterparty

Expiration Date

Exercise Price

No. of Contracts

Notional Amount

Value

Premiums Paid (Received)

Unrealized Appreciation/ (Depreciation)

Put

USD Put GBP Call

Goldman Sachs International

8/08/22

1.28

160,000

USD

160,000

$

89,260

$

1,164

$

88,096

OTC Options Written
Description	Counterparty	Expiration Date		Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid (Received)		Unrealized Appreciation/ (Depreciation)
Call
USD Call BRL Put	Bank of America N.A.		7/15/22		6.10		300,000	USD	300,000	$	(16)	$	(7,612)	$	7,596
USD Call GBP Put	Goldman Sachs International		8/08/22		1.17		160,000	USD	160,000		—		(1,189)		1,189
										$	(16)	$	(8,801)	$	8,785

Forward contracts
Counterparty	Settlement Date	Currency Purchased		Currency Sold		Unrealized Appreciation (Depreciation)
Bank of America N.A.	7/12/22	USD	162,935	MXN	3,296,416	$	(783)
Bank of America N.A.	7/19/22	NOK	923,962	USD	105,461		(11,633)
Bank of America N.A.	7/19/22	USD	6,013	CHF	5,565		179
Bank of America N.A.	7/19/22	USD	255,953	ZAR	4,212,835		(2,630)
Bank of America N.A.	8/16/22	EUR	3,179	USD	3,372		(31)
Bank of America N.A.	8/16/22	SEK	989,299	USD	97,634		(774)
Bank of America N.A.	8/16/22	USD	19,000	RON	90,373		(30)
Bank of America N.A.	8/16/22	USD	98,808	SEK	989,299		1,948
Bank of America N.A.	8/16/22	USD	161,000	TRY	2,933,903		(9,287)
Bank of America N.A.	8/16/22	USD	425,000	EUR	406,248		(1,946)
Bank of America N.A.	8/23/22	USD	150,309	PHP	7,968,622		5,493
BNP Paribas SA	7/26/22	CNH	1,329,139	USD	197,000		1,549
BNP Paribas SA	7/26/22	USD	529,513	CNH	3,413,875		19,542
Citibank N.A.	7/12/22	USD	143,166	COP	539,399,400		13,399
Citibank N.A.	7/19/22	CZK	1,356,954	USD	58,000		(619)
Citibank N.A.	7/28/22	UYU	1,881,181	USD	44,504		2,584
Citibank N.A.	7/28/22	USD	46,449	UYU	1,881,181		(639)
Citibank N.A.	8/04/22	UYU	1,930,549	USD	45,586		2,426
Citibank N.A.	8/04/22	USD	47,551	UYU	1,930,549		(460)
Citibank N.A.	8/09/22	CLP	231,295,350	USD	263,000		(12,901)
Citibank N.A.	8/09/22	USD	112,428	COP	459,294,795		2,493
Citibank N.A.	8/09/22	USD	100,000	ARS	13,490,000		(1,338)
Citibank N.A.	8/11/22	UYU	935,077	USD	22,054		1,201
Citibank N.A.	8/11/22	USD	22,947	UYU	935,077		(308)
Citibank N.A.	8/16/22	NOK	1,535,232	USD	163,000		(7,001)
Citibank N.A.	8/16/22	EUR	356,665	USD	373,000		1,837
Citibank N.A.	8/16/22	USD	142,000	CHF	139,006		(4,010)
Citibank N.A.	8/23/22	KRW	125,080,000	USD	98,838		(2,411)
Citibank N.A.	9/15/22	EGP	1,321,966	USD	78,000		(10,349)
Citibank N.A.	12/15/22	USD	156,000	EGP	2,746,682		20,010
Goldman Sachs International	7/19/22	NOK	138,414	USD	14,000		56
Goldman Sachs International	8/09/22	USD	26,000	COP	108,414,020		50
Goldman Sachs International	8/16/22	CZK	2,319,365	USD	96,886		813
Goldman Sachs International	8/16/22	USD	107,000	HUF	39,794,781		2,529
Goldman Sachs International	8/16/22	USD	95,649	CZK	2,319,365		(2,050)
HSBC Bank USA	7/12/22	PEN	768,458	USD	205,773		(5,215)
HSBC Bank USA	7/12/22	USD	95,000	PEN	364,135		(35)
HSBC Bank USA	7/19/22	RON	483,305	USD	101,000		1,217
HSBC Bank USA	7/19/22	USD	250,058	RON	1,149,617		6,920
HSBC Bank USA	7/26/22	USD	275,000	THB	9,463,575		7,121
HSBC Bank USA	8/09/22	BRL	491,998	USD	95,090		(2,072)
HSBC Bank USA	8/16/22	ILS	914,455	USD	266,000		(3,520)
HSBC Bank USA	8/23/22	KRW	384,116,130	USD	303,000		(6,878)
HSBC Bank USA	8/23/22	USD	13,000	CNH	87,090		(7)
HSBC Bank USA	8/23/22	USD	214,000	INR	16,750,850		2,686
HSBC Bank USA	8/23/22	USD	145,682	THB	5,021,522		3,350
JP Morgan Chase Bank N.A.	7/19/22	USD	56,049	CZK	1,356,954		(1,332)
JP Morgan Chase Bank N.A.	8/09/22	USD	94,695	BRL	491,998		1,677
Morgan Stanley & Co. LLC	7/12/22	MXN	3,296,416	USD	160,682		3,036
Morgan Stanley & Co. LLC	7/19/22	ZAR	4,212,835	USD	262,000		(3,417)
Morgan Stanley & Co. LLC	7/19/22	USD	386,000	CHF	367,305		925
Morgan Stanley & Co. LLC	7/26/22	MYR	578,820	USD	132,000		(688)
Morgan Stanley & Co. LLC	7/26/22	USD	115,000	THB	3,991,650		2,011
Morgan Stanley & Co. LLC	8/09/22	PEN	206,234	USD	53,449		214
Morgan Stanley & Co. LLC	8/16/22	EUR	142,802	USD	153,000		(2,923)
Morgan Stanley & Co. LLC	8/23/22	MYR	1,764,158	USD	401,739		(1,432)
Morgan Stanley & Co. LLC	8/23/22	JPY	67,741,432	USD	535,000		(34,147)
						$	(25,600)

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Long
U.S. Treasury Long Bond	9/21/22		46	$	6,410,573	$	(33,823)
U.S. Treasury Ultra Bond	9/21/22		70		11,078,518		(274,455)
U.S. Treasury Note 2 Year	9/30/22		85		17,955,185		(103,857)
U.S. Treasury Note 5 Year	9/30/22		22		2,455,849		13,651
						$	(398,484)
Short
U.S. Treasury Ultra 10 Year	9/21/22		32	$	(4,088,726)	$	12,726

Currency Legend

ARS Argentinean Peso

BRL Brazilian Real

CHF Swiss Franc

CLP Chilean Peso

CNH Offshore Chinese Yuan

COP Colombian Peso

CZK Czech Koruna

EGP Egyptian Pound

EUR Euro

HUF Hungarian Forint

ILS Israeli Shekel

INR Indian Rupee

JPY Japanese Yen

KRW South Korean Won

MXN Mexican Peso

MYR Malaysian Ringgit

NOK Norwegian Krone

PEN Peruvian New Sol

PHP Philippine Peso

RON New Romanian Leu

SEK Swedish Krona

THB Thai Baht

TRY New Turkish Lira

USD U.S. Dollar

UYU Uruguayan Peso

ZAR South African Rand

MassMutual High Yield Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 1.0%
COMMON STOCK — 1.0%
Energy — 1.0%
Oil & Gas — 1.0%
Fieldwood Energy LLC (a)		48,768	$	—
Fieldwood Energy LLC (a) (b) (c)		11,966		—
Tourmaline Oil Corp. (d)		84,668		4,402,447
				4,402,447
TOTAL COMMON STOCK (Cost $2,676,721)				4,402,447
TOTAL EQUITIES (Cost $2,676,721)				4,402,447
	Principal Amount
BONDS & NOTES — 91.2%
BANK LOANS — 2.9%
Computers — 0.0%
SonicWall US Holdings, Inc., 2nd Lien Term Loan, 3 mo. USD LIBOR + 7.500%
9.006% VRN 5/18/26	$	51,897		49,458
Food — 0.3%
Florida Food Products, LLC, Term Loan, 1 mo. USD LIBOR + 5.000%
6.666% VRN 10/18/28		1,230,611		1,150,621
Internet — 0.3%
TouchTunes Interactive Networks, Inc., 2022 Term Loan, 3 mo. SOFR+ 5.250%
7.304% VRN 4/02/29		1,551,590		1,497,285
Packaging & Containers — 0.1%
Clydesdale Acquisition Holdings, Inc., Term Loan B, 1 mo. SOFR + 4.250%
5.875% VRN 4/13/29		655,769		611,812
Pharmaceuticals — 0.2%
Perrigo Investments, LLC, Term Loan B, 1 mo. SOFR + 2.500%
3.645% VRN 4/20/29		808,229		775,900
Software — 2.0%
Finastra USA, Inc., USD 2nd Lien Term Loan , 3 mo. USD LIBOR + 7.250%
8.489% VRN 6/13/25		4,430,158		3,784,639
Ivanti Software, Inc., 2021 Term Loan B, 3 mo. USD LIBOR + 4.250%
5.848% VRN 12/01/27		1,226,925		1,051,070

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Mitnick Corporate Purchaser, Inc., Term Loan, 3 mo. SOFR + 4.750%
5.924% VRN 5/02/29	$	2,111,257	$	2,000,416
Quest Software US Holdings, Inc., 2022 2nd Lien Term Loan, 3 mo. SOFR + 7.500%,
8.724% VRN 2/01/30		2,522,327		2,248,024
				9,084,149
TOTAL BANK LOANS (Cost $14,162,753)				13,169,225
CORPORATE DEBT — 88.3%
Advertising — 0.8%
CMG Media Corp.
8.875% 12/15/27 (e)		2,314,000		1,825,538
Stagwell Global LLC
5.625% 8/15/29 (e)		1,514,000		1,216,544
Summer BC Bidco B LLC
5.500% 10/31/26 (e)		515,000		461,259
				3,503,341
Aerospace & Defense — 0.1%
TransDigm, Inc.
8.000% 12/15/25 (e)		221,000		223,487
Agriculture — 0.3%
Darling Ingredients, Inc.
6.000% 6/15/30 (e)		1,162,000		1,158,805
Airlines — 2.2%
American Airlines, Inc.
11.750% 7/15/25 (e)		2,318,000		2,408,518
American Airlines, Inc. /AAdvantage Loyalty IP Ltd.
5.500% 4/20/26 (e)		3,925,000		3,606,231
5.750% 4/20/29 (e)		1,488,000		1,273,676
Mileage Plus Holdings LLC / Mileage Plus Intellectual Property Assets Ltd.
6.500% 6/20/27 (e)		1,287,000		1,264,863
United Airlines, Inc.
4.375% 4/15/26 (e)		758,000		676,515
4.625% 4/15/29 (e)		795,000		669,291
				9,899,094
Auto Manufacturers — 1.4%
Ford Motor Co.
3.250% 2/12/32		2,869,000		2,127,435
Ford Motor Credit Co. LLC
4.000% 11/13/30		2,330,000		1,887,894
4.125% 8/17/27		1,560,000		1,373,580
4.389% 1/08/26		712,000		655,795
5.113% 5/03/29		322,000		288,665
				6,333,369
Auto Parts & Equipment — 0.3%
Adient Global Holdings Ltd.
4.875% 8/15/26 (e)		1,734,000		1,521,862

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Biotechnology — 0.4%
Emergent BioSolutions, Inc.
3.875% 8/15/28 (e)	$	2,529,000	$	1,792,889
Building Materials — 1.2%
Jeld-Wen, Inc.
4.875% 12/15/27 (d) (e)		474,000		369,720
New Enterprise Stone & Lime Co., Inc.
5.250% 7/15/28 (e)		2,072,000		1,703,256
9.750% 7/15/28 (e)		3,764,000		3,218,220
				5,291,196
Chemicals — 3.1%
ASP Unifrax Holdings, Inc.
7.500% 9/30/29 (e)		423,000		293,586
Consolidated Energy Finance SA
5.625% 10/15/28 (e)		4,296,000		3,460,481
LSF11 A5 HoldCo LLC
6.625% 10/15/29 (e)		1,603,000		1,350,528
Methanex Corp.
5.125% 10/15/27		2,056,000		1,814,420
5.250% 12/15/29		1,618,000		1,367,695
Olympus Water US Holding Corp.
4.250% 10/01/28 (e)		2,503,000		1,960,475
6.250% 10/01/29 (d) (e)		1,772,000		1,233,640
Polar US Borrower LLC / Schenectady International Group, Inc.
6.750% 5/15/26 (e)		346,000		241,688
Tronox, Inc.
4.625% 3/15/29 (e)		1,296,000		1,043,009
Vibrantz Technologies, Inc.
9.000% 2/15/30 (e)		1,743,000		1,228,684
				13,994,206
Coal — 0.7%
Coronado Finance Pty Ltd.
10.750% 5/15/26 (e)		2,339,000		2,426,713
Warrior Met Coal, Inc.
7.875% 12/01/28 (e)		564,000		539,732
				2,966,445
Commercial Services — 3.2%
Alta Equipment Group, Inc.
5.625% 4/15/26 (e)		2,194,000		1,875,870
APi Escrow Corp.
4.750% 10/15/29 (e)		1,278,000		1,025,595
Ashtead Capital, Inc.
4.000% 5/01/28 (e)		306,000		276,642
CoreLogic, Inc.
4.500% 5/01/28 (e)		1,254,000		965,580
The Hertz Corp.
5.000% 12/01/29 (e)		1,347,000		1,041,810
Prime Security Services Borrower LLC / Prime Finance, Inc.
6.250% 1/15/28 (e)		2,865,000		2,392,972
PROG Holdings, Inc.
6.000% 11/15/29 (e)		2,360,000		1,784,585

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Rent-A-Center, Inc
6.375% 2/15/29 (d) (e)	$	499,000	$	389,220
Sabre GLBL, Inc.
7.375% 9/01/25 (e)		1,138,000		1,061,902
9.250% 4/15/25 (e)		3,672,000		3,538,156
				14,352,332
Computers — 1.1%
Condor Merger Sub, Inc.
7.375% 2/15/30 (d) (e)		3,092,000		2,525,777
Presidio Holdings, Inc.
8.250% 2/01/28 (e)		2,787,000		2,449,732
				4,975,509
Cosmetics & Personal Care — 0.6%
Coty, Inc. /HFC Prestige Products, Inc. /HFC Prestige International US LLC
4.750% 1/15/29 (e)		3,086,000		2,665,533
Distribution & Wholesale — 0.8%
American Builders & Contractors Supply Co., Inc.
3.875% 11/15/29 (e)		1,527,000		1,220,823
Resideo Funding, Inc.
4.000% 9/01/29 (e)		2,600,000		2,029,118
Univar Solutions USA, Inc.
5.125% 12/01/27 (e)		177,000		164,732
				3,414,673
Diversified Financial Services — 4.7%
Coinbase Global, Inc.
3.375% 10/01/28 (d) (e)		1,255,000		780,372
3.625% 10/01/31 (d) (e)		1,018,000		564,165
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (e)		9,179,749		6,953,660
Jefferson Capital Holdings LLC
6.000% 8/15/26 (e)		2,664,000		2,331,000
Midcap Financial Issuer Trust
5.625% 1/15/30 (e)		723,000		564,106
6.500% 5/01/28 (e)		2,875,000		2,472,500
OneMain Finance Corp.
4.000% 9/15/30		1,207,000		893,554
5.375% 11/15/29		2,695,000		2,179,943
PRA Group, Inc.
5.000% 10/01/29 (e)		4,020,000		3,321,605
7.375% 9/01/25 (e)		1,113,000		1,082,393
				21,143,298
Electric — 1.6%
PG&E Corp.
5.000% 7/01/28		3,644,000		3,125,568
5.250% 7/01/30		583,000		479,517
Pike Corp.
5.500% 9/01/28 (e)		2,213,000		1,770,400
Vistra Operations Co. LLC
4.875% 5/13/24 (e)		1,968,000		1,957,868
				7,333,353

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Electrical Components & Equipment — 0.3%
Energizer Holdings, Inc.
6.500% 12/31/27 (e)	$	1,508,000	$	1,321,385
Electronics — 0.7%
Atkore, Inc.
4.250% 6/01/31 (e)		3,884,000		3,223,720
Engineering & Construction — 1.0%
Arcosa, Inc.
4.375% 4/15/29 (e)		2,691,000		2,264,277
Dycom Industries, Inc.
4.500% 4/15/29 (e)		721,000		630,367
MasTec, Inc.
4.500% 8/15/28 (e)		938,000		845,356
Railworks Holdings LP / Railworks Rally, Inc.
8.250% 11/15/28 (e)		879,000		793,297
				4,533,297
Entertainment — 0.4%
Caesars Resort Collection LLC/CRC Finco, Inc.
5.750% 7/01/25 (e)		125,000		120,000
Everi Holdings, Inc.
5.000% 7/15/29 (e)		31,000		26,195
Live Nation Entertainment, Inc.
4.750% 10/15/27 (e)		1,989,000		1,780,274
				1,926,469
Environmental Controls — 0.2%
Harsco Corp.
5.750% 7/31/27 (e)		1,245,000		996,249
Food — 1.8%
JBS Finance Luxembourg Sarl
3.625% 1/15/32 (e)		2,474,000		1,997,755
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
3.750% 12/01/31 (e)		400,000		328,155
5.500% 1/15/30 (e)		3,870,000		3,669,861
Simmons Foods, Inc. /Simmons Prepared Foods, Inc. /Simmons Pet Food, Inc. /Simmons Feed
4.625% 3/01/29 (e)		1,142,000		959,551
US Foods, Inc.
4.750% 2/15/29 (e)		1,147,000		1,002,696
				7,958,018
Forest Products & Paper — 0.2%
Clearwater Paper Corp.
4.750% 8/15/28 (e)		1,232,000		1,062,396
Health Care – Services — 6.5%
Centene Corp.
4.625% 12/15/29		4,327,000		4,014,169
Charles River Laboratories International, Inc.
3.750% 3/15/29 (e)		280,000		242,998
4.250% 5/01/28 (e)		2,190,000		1,967,300
CHS/Community Health Systems, Inc.
4.750% 2/15/31 (e)		758,000		554,959

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
5.625% 3/15/27 (e)	$	556,000	$	470,515
6.000% 1/15/29 (e)		1,492,000		1,222,202
6.125% 4/01/30 (d) (e)		1,361,000		830,210
6.875% 4/15/29 (d) (e)		472,000		304,440
HCA, Inc.
3.500% 9/01/30		5,131,000		4,365,917
5.625% 9/01/28		4,451,000		4,378,426
ModivCare Escrow Issuer, Inc.
5.000% 10/01/29 (e)		969,000		778,808
ModivCare, Inc.
5.875% 11/15/25 (e)		125,000		115,000
Molina Healthcare, Inc.
4.375% 6/15/28 (e)		1,253,000		1,120,567
Radiology Partners, Inc.
9.250% 2/01/28 (e)		4,598,000		3,434,301
Tenet Healthcare Corp.
4.375% 1/15/30 (e)		1,178,000		996,623
4.875% 1/01/26 (e)		1,309,000		1,204,280
6.125% 10/01/28 (e)		1,550,000		1,340,750
6.125% 6/15/30 (e)		2,081,000		1,961,384
				29,302,849
Home Builders — 1.3%
Ashton Woods USA LLC / Ashton Woods Finance Co.
4.625% 8/01/29 (e)		1,339,000		1,004,250
M/I Homes, Inc.
4.950% 2/01/28		1,544,000		1,312,469
Mattamy Group Corp.
4.625% 3/01/30 (e)		4,544,000		3,320,819
5.250% 12/15/27 (e)		25,000		20,415
				5,657,953
Insurance — 0.5%
Highlands Holdings Bond Issuer Ltd. / Highlands Holdings Bond Co-Issuer, Inc.
7.625% 10/15/25 (e)		2,333,066		2,252,575
Internet — 2.2%
Acuris Finance Us, Inc. / Acuris Finance SARL
5.000% 5/01/28 (e)		540,000		448,103
Getty Images, Inc.
9.750% 3/01/27 (e)		2,165,000		2,056,750
ION Trading Technologies Sarl
5.750% 5/15/28 (e)		1,728,000		1,382,037
Millennium Escrow Corp.
6.625% 8/01/26 (e)		1,956,000		1,595,738
Northwest Fiber LLC / Northwest Fiber Finance Sub, Inc.
10.750% 6/01/28 (e)		2,410,000		2,144,394
Twitter, Inc.
5.000% 3/01/30 (e)		1,902,000		1,804,522
Uber Technologies, Inc.
4.500% 8/15/29 (e)		558,000		458,439
				9,889,983

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Investment Companies — 1.1%
Icahn Enterprises LP/ Icahn Enterprises Finance Corp.
4.750% 9/15/24	$	1,179,000	$	1,100,033
5.250% 5/15/27		2,581,000		2,286,353
6.250% 5/15/26		1,500,000		1,395,000
				4,781,386
Leisure Time — 1.3%
Carnival Corp.
7.625% 3/01/26 (e)		651,000		502,897
5.750% 3/01/27 (e)		2,737,000		1,987,692
6.000% 5/01/29 (e)		312,000		218,010
NCL Corp. Ltd.
5.875% 3/15/26 (e)		781,000		610,793
5.875% 2/15/27 (e)		224,000		191,520
NCL Finance Ltd.
6.125% 3/15/28 (d) (e)		620,000		451,050
Royal Caribbean Cruises Ltd.
5.500% 8/31/26 (e)		2,384,000		1,761,800
				5,723,762
Lodging — 1.5%
Hilton Grand Vacations Borrower Escrow LLC / Hilton Grand Vacations Borrower Esc
4.875% 7/01/31 (e)		1,266,000		966,322
Sugarhouse HSP Gaming Prop Mezz LP / Sugarhouse HSP Gaming Finance Corp.
5.875% 5/15/25 (e)		1,698,000		1,561,763
Travel & Leisure Co.
4.500% 12/01/29 (e)		1,000,000		774,635
4.625% 3/01/30 (e)		800,000		620,000
6.000% STEP 4/01/27		419,000		378,963
6.625% 7/31/26 (e)		1,839,000		1,745,947
Wyndham Hotels & Resorts, Inc.
4.375% 8/15/28 (e)		968,000		846,671
				6,894,301
Machinery – Diversified — 0.2%
OT Merger Corp.
7.875% 10/15/29 (e)		1,720,000		987,880
Welbilt, Inc.
9.500% 2/15/24		54,000		53,865
				1,041,745
Media — 8.9%
Altice Financing SA
5.000% 1/15/28 (e)		743,000		591,190
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 1/15/34 (e)		3,376,000		2,607,960
4.500% 5/01/32		215,000		173,613
5.000% 2/01/28 (e)		939,000		864,265
CSC Holdings LLC
4.625% 12/01/30 (e)		1,843,000		1,234,810
5.750% 1/15/30 (e)		670,000		487,425
Cumulus Media New Holdings, Inc.
6.750% 7/01/26 (d) (e)		2,614,000		2,408,147
DIRECTV Financing LLC / DIRECTV Financing Co-Obligor, Inc.
5.875% 8/15/27 (e)		3,511,000		3,018,038

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
DISH DBS Corp.
5.250% 12/01/26 (e)	$	392,000	$	305,860
5.750% 12/01/28 (e)		504,000		373,167
5.875% 11/15/24		981,000		828,945
7.375% 7/01/28		918,000		620,320
DISH Network Corp.
3.375% 8/15/26		3,231,000		2,182,541
Gray Escrow II, Inc.
5.375% 11/15/31 (e)		1,881,000		1,507,151
iHeartCommunications, Inc.
8.375% 5/01/27 (d)		2,871,000		2,281,526
LCPR Senior Secured Financing DAC
5.125% 7/15/29 (e)		3,185,000		2,659,475
6.750% 10/15/27 (e)		2,216,000		2,067,151
Radiate Holdco LLC / Radiate Finance, Inc.
6.500% 9/15/28 (e)		2,534,000		1,958,465
Sinclair Television Group Inc,
5.125% 2/15/27 (d) (e)		1,350,000		1,134,502
Sirius XM Radio, Inc.
3.125% 9/01/26 (e)		1,566,000		1,381,911
3.875% 9/01/31 (e)		5,092,000		4,086,330
Townsquare Media, Inc.
6.875% 2/01/26 (d) (e)		3,013,000		2,681,719
Univision Communications, Inc.
7.375% 6/30/30 (e)		514,000		504,573
Virgin Media Secured Finance PLC
4.500% 8/15/30 (e)		250,000		205,431
5.500% 5/15/29 (e)		4,137,000		3,672,415
				39,836,930
Metal Fabricate & Hardware — 0.2%
Park-Ohio Industries, Inc.
6.625% 4/15/27 (d)		1,117,000		882,430
Mining — 2.8%
Arconic Corp.
6.125% 2/15/28 (e)		1,627,000		1,500,257
Compass Minerals International, Inc.
4.875% 7/15/24 (e)		1,164,000		1,080,008
6.750% 12/01/27 (e)		1,018,000		921,290
First Quantum Minerals Ltd.
6.500% 3/01/24 (e)		2,110,000		2,028,569
6.875% 3/01/26 (e)		1,420,000		1,307,820
7.500% 4/01/25 (e)		2,954,000		2,792,900
Hecla Mining Co.
7.250% 2/15/28		2,768,000		2,623,931
Novelis Corp.
3.250% 11/15/26 (e)		304,000		256,964
3.875% 8/15/31 (e)		313,000		239,993
				12,751,732
Miscellaneous - Manufacturing — 0.5%
Amsted Industries, Inc.
5.625% 7/01/27 (e)		2,435,000		2,288,900
Oil & Gas — 9.2%
Apache Corp.

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
4.750% 4/15/43	$	816,000	$	636,155
5.100% 9/01/40		607,000		512,539
5.350% 7/01/49		910,000		719,351
Chesapeake Energy Corp.
5.500% 2/01/26 (e)		633,000		601,350
5.875% 2/01/29 (e)		1,359,000		1,281,537
Comstock Resources, Inc.
5.875% 1/15/30 (e)		733,000		630,380
6.750% 3/01/29 (e)		1,512,000		1,353,890
CVR Energy, Inc.
5.250% 2/15/25 (e)		1,318,000		1,205,981
5.750% 2/15/28 (e)		1,222,000		1,089,104
Hilcorp Energy I LP / Hilcorp Finance Co.
5.750% 2/01/29 (e)		513,000		450,486
6.000% 4/15/30 (e)		443,000		385,410
6.000% 2/01/31 (e)		1,607,000		1,388,287
6.250% 11/01/28 (e)		2,052,000		1,909,858
Murphy Oil Corp.
6.375% 7/15/28		1,190,000		1,109,782
Nabors Industries Ltd.
7.250% 1/15/26 (e)		2,399,000		2,127,553
7.500% 1/15/28 (e)		909,000		781,740
Nabors Industries, Inc.
5.750% 2/01/25		387,000		345,591
7.375% 5/15/27 (e)		2,040,000		1,938,000
Neptune Energy Bondco PLC
6.625% 5/15/25 (e)		6,763,000		6,492,480
Occidental Petroleum Corp.
6.125% 1/01/31 (d)		1,607,000		1,628,574
6.200% 3/15/40		2,664,000		2,624,040
6.375% 9/01/28		2,015,000		2,040,187
6.450% 9/15/36		1,040,000		1,066,000
6.600% 3/15/46		1,639,000		1,740,618
Parkland Corp.
4.625% 5/01/30 (e)		795,000		644,930
5.875% 7/15/27 (e)		1,856,000		1,684,320
Range Resources Corp. Co.
8.250% 1/15/29		846,000		863,512
Southwestern Energy Co.
4.750% 2/01/32		380,000		323,821
5.375% 3/15/30		366,000		337,635
Sunoco LP/Sunoco Finance Corp.
6.000% 4/15/27		1,137,000		1,083,714
Transocean Guardian Ltd.
5.875% 1/15/24 (e)		189,802		175,415
Transocean Poseidon Ltd.
6.875% 2/01/27 (e)		183,750		163,537
Transocean, Inc.
7.250% 11/01/25 (e)		1,205,000		894,965
7.500% 1/15/26 (e)		1,662,000		1,167,960
				41,398,702
Oil & Gas Services — 0.7%
Weatherford International Ltd.
6.500% 9/15/28 (e)		964,000		865,190
8.625% 4/30/30 (e)		2,835,000		2,352,444
				3,217,634

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Packaging & Containers — 1.7%
Clydesdale Acquisition Holdings, Inc.
6.625% 4/15/29 (e)	$	538,000	$	506,005
8.750% 4/15/30 (e)		1,799,000		1,544,675
Graphic Packaging International LLC
3.500% 3/01/29 (e)		754,000		633,131
Mauser Packaging Solutions Holding Co.
5.500% 4/15/24 (e)		2,384,000		2,276,720
Trident TPI Holdings, Inc.
9.250% 8/01/24 (e)		2,752,000		2,517,640
				7,478,171
Pharmaceuticals — 2.7%
AdaptHealth LLC
4.625% 8/01/29 (e)		94,000		77,315
5.125% 3/01/30 (e)		3,300,000		2,781,599
Bausch Health Americas, Inc.
8.500% 1/31/27 (e)		175,000		122,719
9.250% 4/01/26 (e)		1,117,000		798,655
Bausch Health Cos., Inc.
4.875% 6/01/28 (e)		1,347,000		1,048,168
5.000% 1/30/28 (e)		569,000		302,992
5.000% 2/15/29 (e)		1,301,000		672,663
5.250% 1/30/30 (e)		138,000		71,253
6.250% 2/15/29 (e)		1,515,000		812,494
9.000% 12/15/25 (e)		870,000		630,750
Jazz Securities DAC
4.375% 1/15/29 (e)		1,247,000		1,106,264
Organon & Co. / Organon Foreign Debt Co-Issuer BV
4.125% 4/30/28 (e)		1,491,000		1,313,289
5.125% 4/30/31 (e)		1,230,000		1,068,587
Perrigo Finance Unlimited Co.
4.400% STEP 6/15/30		1,262,000		1,129,274
				11,936,022
Pipelines — 6.7%
Antero Midstream Partners LP / Antero Midstream Finance Corp.
5.375% 6/15/29 (e)		5,376,000		4,814,531
CQP Holdco LP / BIP-V Chinook Holdco LLC
5.500% 6/15/31 (e)		2,124,000		1,802,002
EnLink Midstream LLC
5.375% 6/01/29		786,000		687,814
5.625% 1/15/28 (e)		449,000		412,085
EnLink Midstream Partners LP
4.150% 6/01/25		67,000		61,640
4.850% 7/15/26		277,000		255,532
5.050% 4/01/45		160,000		108,200
5.450% 6/01/47		706,000		499,664
5.600% 4/01/44		3,122,000		2,209,925
EQM Midstream Partners LP
4.500% 1/15/29 (e)		1,111,000		901,999
4.750% 1/15/31 (d) (e)		1,001,000		798,297
6.000% 7/01/25 (e)		339,000		326,221
6.500% 7/01/27 (e)		763,000		709,392
7.500% 6/01/27 (e)		832,000		804,253
7.500% 6/01/30 (e)		176,000		169,074

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Genesis Energy LP/Genesis Energy Finance Corp.
5.625% 6/15/24	$	666,000	$	623,899
6.250% 5/15/26		290,000		259,187
6.500% 10/01/25		2,411,000		2,224,147
Harvest Midstream I LP
7.500% 9/01/28 (e)		2,775,000		2,606,366
ITT Holdings LLC
6.500% 8/01/29 (e)		4,327,000		3,461,600
NGL Energy Operating LLC / NGL Energy Finance Corp.
7.500% 2/01/26 (e)		2,530,000		2,277,000
Tallgrass Energy Partners LP / Tallgrass Energy Finance Corp
7.500% 10/01/25 (e)		1,400,000		1,354,944
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
5.500% 3/01/30		128,000		121,907
Venture Global Calcasieu Pass LLC
3.875% 8/15/29 (e)		869,000		760,136
4.125% 8/15/31 (e)		994,000		852,151
Western Midstream Operating LP
5.450% 4/01/44		929,000		772,129
				29,874,095
Real Estate — 0.4%
Realogy Group LLC / Realogy Co-Issuer Corp.
5.750% 1/15/29 (e)		2,591,000		1,964,807
Real Estate Investment Trusts (REITS) — 2.2%
Ladder Capital Finance Holdings LLLP / Ladder Capital Finance Corp.
4.750% 6/15/29 (e)		2,804,000		2,157,328
RHP Hotel Properties LP/RHP Finance Corp.
4.750% 10/15/27		1,660,000		1,474,337
RLJ Lodging Trust LP
3.750% 7/01/26 (e)		1,238,000		1,071,828
4.000% 9/15/29 (e)		829,000		680,552
Service Properties Trust
3.950% 1/15/28		359,000		245,775
4.375% 2/15/30		568,000		379,140
4.950% 2/15/27		284,000		209,166
5.500% 12/15/27		949,000		768,690
Starwood Property Trust, Inc.
5.500% 11/01/23 (e)		1,144,000		1,131,130
Uniti Group LP / Uniti Fiber Holdings, Inc. / CSL Capital LLC
4.750% 4/15/28 (e)		1,162,000		950,583
6.500% 2/15/29 (e)		560,000		410,200
7.875% 2/15/25 (e)		166,000		160,190
				9,638,919
Retail — 3.1%
Asbury Automotive Group, Inc.
4.625% 11/15/29 (e)		993,000		820,466
Bath & Body Works, Inc.
6.750% 7/01/36		658,000		527,196
6.875% 11/01/35		2,029,000		1,631,438
BCPE Ulysses Intermediate, Inc.
7.750% 4/01/27 (e)		3,207,000		1,972,305
Macy's Retail Holdings LLC
5.875% 4/01/29 (e)		261,000		222,176
5.875% 3/15/30 (d) (e)		500,000		419,522

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
6.125% 3/15/32 (e)	$	553,000	$	460,737
Nordstrom, Inc.
5.000% 1/15/44 (d)		2,262,000		1,611,675
Park River Holdings, Inc.
5.625% 2/01/29 (e)		472,000		294,154
Sonic Automotive, Inc.
4.625% 11/15/29 (e)		1,085,000		840,669
4.875% 11/15/31 (e)		448,000		336,973
Staples, Inc.
7.500% 4/15/26 (e)		1,049,000		883,258
10.750% 4/15/27 (d) (e)		1,421,000		937,860
Suburban Propane Partners LP / Suburban Energy Finance Corp.
5.000% 6/01/31 (e)		1,271,000		1,066,397
Superior Plus LP / Superior General Partner, Inc.
4.500% 3/15/29 (e)		2,169,000		1,843,650
				13,868,476
Semiconductors — 0.3%
Entegris Escrow Corp.
5.950% 6/15/30 (e)		1,567,000		1,490,805
Software — 1.4%
Avaya Holdings Corp., Convertible,
2.250% 6/15/23		1,776,000		1,711,289
Boxer Parent Co., Inc.
9.125% 3/01/26 (e)		158,000		148,096
Consensus Cloud Solutions, Inc.
6.000% 10/15/26 (e)		702,000		603,930
CWT Travel Group, Inc.
8.500% 11/19/26 (e)		696		625
Open Text Corp.
3.875% 2/15/28 (e)		302,000		268,608
Open Text Holdings, Inc.
4.125% 2/15/30 (e)		1,297,000		1,121,970
4.125% 12/01/31 (e)		504,000		415,781
Veritas US, Inc./Veritas Bermuda Ltd.
7.500% 9/01/25 (e)		2,925,000		2,175,469
				6,445,768
Telecommunications — 4.4%
Altice France SA
5.125% 7/15/29 (e)		2,356,000		1,778,780
Connect Finco SARL / Connect US Finco LLC
6.750% 10/01/26 (e)		584,000		521,950
Consolidated Communications, Inc.
6.500% 10/01/28 (e)		2,299,000		1,934,609
Frontier Communications Holdings LLC
5.000% 5/01/28 (e)		3,081,000		2,626,552
6.000% 1/15/30 (d) (e)		819,000		632,678
6.750% 5/01/29 (e)		902,000		741,895
Hughes Satellite Systems Corp.
6.625% 8/01/26		2,280,000		2,023,500
Sprint Capital Corp.
6.875% 11/15/28		3,131,000		3,292,309
8.750% 3/15/32		4,688,000		5,641,914

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
T-Mobile USA, Inc.
3.375% 4/15/29	$	804,000	$	702,849
				19,897,036
Transportation — 1.4%
Carriage Purchaser, Inc.
7.875% 10/15/29 (e)		1,435,000		1,066,394
First Student Bidco, Inc./First Transit Parent, Inc.
4.000% 7/31/29 (e)		2,525,000		2,019,980
Seaspan Corp.
5.500% 8/01/29 (e)		3,997,000		3,190,099
				6,276,473
TOTAL CORPORATE DEBT (Cost $460,600,143)				396,382,380
TOTAL BONDS & NOTES (Cost $474,762,896)				409,551,605
	Number of Shares
MUTUAL FUNDS — 3.3%
Diversified Financial Services — 3.3%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		14,981,620		14,981,620
TOTAL MUTUAL FUNDS (Cost $14,981,620)				14,981,620
TOTAL LONG-TERM INVESTMENTS (Cost $492,908,485)				429,420,327
	Principal Amount
SHORT-TERM INVESTMENTS — 5.1%
Commercial Paper — 4.9%
Centerpoint Engy, Inc.
1.805% 7/01/22	$	2,000,000		1,999,896
Cigna Corp.
2.032% 7/28/22 (e)		5,000,000		4,992,094
Reckitt Benckiser Treasury Services PLC
2.001% 7/21/22 (e)		3,000,000		2,996,932
Rogers Communications, Inc.
2.286% 7/28/22 (e)		5,000,000		4,992,094
The Southern Co.
2.030% 7/14/22 (e)		4,000,000		3,997,027
TransCanada PipeLines Ltd.
2.103% 7/25/22 (e)		3,000,000		2,995,819
				21,973,862
Repurchase Agreement — 0.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (g)		875,138		875,138

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount	Value
TOTAL SHORT-TERM INVESTMENTS (Cost $22,848,888)		$	22,849,000
TOTAL INVESTMENTS — 100.6% (Cost $515,270,125) (h)			451,784,672
Other Assets/(Liabilities) — (0.6)%			(2,582,063)
NET ASSETS — 100.0%		$	449,202,609

Abbreviation Legend

STEP Step Up Bond

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Investment was valued using significant unobservable inputs.

(c) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2022, these securities amounted to a value of $0 or 0.00% of net assets.

(d) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $17,987,689 or 4.00% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $3,658,247 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(e) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $327,079,664 or 72.81% of net assets.

(f) Represents investment of security lending cash collateral. (Note 2).

(g) Maturity value of $875,144. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $892,722.

(h) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Balanced Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 63.9%
COMMON STOCK — 63.9%
Basic Materials — 1.3%
Chemicals — 1.1%
Air Products & Chemicals, Inc.		392	$	94,268
Albemarle Corp.		58		12,121
Celanese Corp.		316		37,165
Dow, Inc.		3,349		172,842
DuPont de Nemours, Inc.		2,054		114,161
Ecolab, Inc.		410		63,042
International Flavors & Fragrances, Inc.		133		15,843
Linde PLC		2,098		603,238
LyondellBasell Industries NV Class A		2,688		235,092
PPG Industries, Inc.		313		35,788
The Sherwin-Williams Co.		282		63,143
				1,446,703
Forest Products & Paper — 0.1%
International Paper Co.		1,602		67,012
Mining — 0.1%
Newmont Corp.		1,632		97,381
				1,611,096
Communications — 5.7%
Advertising — 0.1%
Omnicom Group, Inc.		1,717		109,218
Internet — 0.8%
Booking Holdings, Inc. (a)		244		426,754
CDW Corp.		299		47,110
eBay, Inc.		2,080		86,674
MercadoLibre, Inc. (a)		53		33,754
Netflix, Inc. (a)		320		55,958
NortonLifeLock, Inc.		1,838		40,363
Okta, Inc. (a)		82		7,413
Palo Alto Networks, Inc. (a)		293		144,724
Twitter, Inc. (a)		771		28,828
VeriSign, Inc. (a)		528		88,350
				959,928
Media — 0.5%
Fox Corp. Class A		5,027		161,668
Liberty Media Corp-Liberty Formula One Class C (a)		2,556		162,229
Paramount Global Class B		1,145		28,259

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
The Walt Disney Co. (a)		3,007	$	283,861
				636,017
Telecommunications — 4.3%
Arista Networks, Inc. (a)		630		59,056
AT&T, Inc.		77,125		1,616,540
Cisco Systems, Inc.		17,866		761,806
Corning, Inc.		2,144		67,558
Motorola Solutions, Inc.		507		106,267
Verizon Communications, Inc.		55,519		2,817,589
				5,428,816
				7,133,979
Consumer, Cyclical — 7.1%
Apparel — 0.4%
NIKE, Inc. Class B		3,941		402,770
VF Corp.		843		37,236
				440,006
Auto Manufacturers — 0.2%
Cummins, Inc.		929		179,789
Auto Parts & Equipment — 0.0%
Aptiv PLC (a)		619		55,134
Distribution & Wholesale — 0.1%
Copart, Inc. (a)		636		69,108
W.W. Grainger, Inc.		225		102,247
				171,355
Leisure Time — 0.0%
Carnival Corp. (a) (b)		525		4,541
Lodging — 0.2%
Hilton Worldwide Holdings, Inc.		714		79,568
Las Vegas Sands Corp. (a)		1,474		49,512
Marriott International, Inc. Class A		806		109,624
				238,704
Retail — 6.2%
AutoZone, Inc. (a)		425		913,376
Best Buy Co., Inc.		1,003		65,386
CarMax, Inc. (a)		186		16,829
Chipotle Mexican Grill, Inc. (a)		71		92,816
Costco Wholesale Corp.		4,766		2,284,249
Dollar General Corp.		2,114		518,860
Dollar Tree, Inc. (a)		1,292		201,358
Genuine Parts Co.		1,054		140,182
The Home Depot, Inc.		5,628		1,543,592
Lowe's Cos., Inc.		4,265		744,968
Lululemon Athletica, Inc. (a)		433		118,040
Ross Stores, Inc.		954		66,999
Target Corp.		2,754		388,947
The TJX Cos., Inc.		4,584		256,016

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Ulta Beauty, Inc. (a)		310	$	119,499
Walgreens Boots Alliance, Inc.		2,579		97,744
Yum! Brands, Inc.		1,616		183,432
				7,752,293
				8,841,822
Consumer, Non-cyclical — 17.0%
Beverages — 1.8%
Brown-Forman Corp. Class B		645		45,253
The Coca-Cola Co.		12,937		813,867
Constellation Brands, Inc. Class A		639		148,925
Keurig Dr Pepper, Inc.		2,694		95,341
Monster Beverage Corp. (a)		369		34,206
PepsiCo, Inc.		6,587		1,097,789
				2,235,381
Biotechnology — 1.3%
Amgen, Inc.		2,217		539,396
Biogen, Inc. (a)		296		60,366
BioMarin Pharmaceutical, Inc. (a)		223		18,480
Gilead Sciences, Inc.		5,549		342,984
Illumina, Inc. (a)		58		10,693
Incyte Corp. (a)		414		31,452
Regeneron Pharmaceuticals, Inc. (a)		471		278,422
Vertex Pharmaceuticals, Inc. (a)		1,119		315,323
				1,597,116
Commercial Services — 0.9%
Automatic Data Processing, Inc.		1,428		299,937
Block, Inc. (a)		482		29,624
Cintas Corp.		219		81,803
Global Payments, Inc.		775		85,746
Moody's Corp.		424		115,315
PayPal Holdings, Inc. (a)		1,246		87,021
S&P Global, Inc.		896		302,006
Verisk Analytics, Inc.		578		100,046
				1,101,498
Cosmetics & Personal Care — 2.6%
Colgate-Palmolive Co.		6,396		512,576
The Estee Lauder Cos., Inc. Class A		275		70,034
The Procter & Gamble Co.		18,709		2,690,167
				3,272,777
Food — 1.3%
Campbell Soup Co.		1,089		52,326
General Mills, Inc.		4,867		367,215
The Hershey Co.		1,313		282,505
Hormel Foods Corp.		1,790		84,774
Kellogg Co.		1,815		129,482
The Kroger Co.		4,101		194,100
McCormick & Co., Inc.		678		56,444
Mondelez International, Inc. Class A		7,077		439,411

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Sysco Corp.		443	$	37,527
				1,643,784
Health Care – Products — 1.8%
Abbott Laboratories		5,143		558,787
Align Technology, Inc. (a)		51		12,070
Baxter International, Inc.		1,539		98,850
Boston Scientific Corp. (a)		2,615		97,461
Danaher Corp.		1,120		283,942
Edwards Lifesciences Corp. (a)		1,046		99,464
IDEXX Laboratories, Inc. (a)		79		27,708
Intuitive Surgical, Inc. (a)		296		59,410
Medtronic PLC		3,606		323,639
ResMed, Inc.		126		26,413
Thermo Fisher Scientific, Inc.		1,069		580,766
Waters Corp. (a)		77		25,486
West Pharmaceutical Services, Inc.		68		20,561
Zimmer Biomet Holdings, Inc.		481		50,534
				2,265,091
Health Care – Services — 2.1%
Centene Corp. (a)		994		84,102
Elevance Health, Inc.		931		449,282
HCA Healthcare, Inc.		477		80,165
Humana, Inc.		275		128,719
IQVIA Holdings, Inc. (a)		288		62,493
Laboratory Corp. of America Holdings		219		51,325
Quest Diagnostics, Inc.		322		42,820
UnitedHealth Group, Inc.		3,185		1,635,911
				2,534,817
Household Products & Wares — 0.2%
Church & Dwight Co., Inc.		1,052		97,479
The Clorox Co.		285		40,179
Kimberly-Clark Corp.		1,121		151,503
				289,161
Pharmaceuticals — 5.0%
AbbVie, Inc.		5,748		880,364
AmerisourceBergen Corp.		750		106,110
Becton Dickinson and Co.		815		200,922
Bristol-Myers Squibb Co.		10,356		797,412
Cardinal Health, Inc.		431		22,528
Cigna Corp.		1,998		526,513
CVS Health Corp.		11,375		1,054,008
DexCom, Inc. (a)		227		16,918
McKesson Corp.		1,625		530,091
Merck & Co., Inc.		11,645		1,061,675
Pfizer, Inc.		16,974		889,947
Zoetis, Inc.		670		115,166
				6,201,654
				21,141,279

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Energy — 2.3%
Energy – Alternate Sources — 0.0%
Enphase Energy, Inc. (a)		277	$	54,081
Oil & Gas — 1.0%
Hess Corp.		1,269		134,438
Marathon Petroleum Corp.		5,861		481,833
Phillips 66		3,508		287,621
Valero Energy Corp.		3,732		396,637
				1,300,529
Oil & Gas Services — 0.4%
Baker Hughes Co.		4,640		133,957
Halliburton Co.		3,561		111,673
Schlumberger NV		5,700		203,832
				449,462
Pipelines — 0.9%
Cheniere Energy, Inc.		771		102,566
Kinder Morgan, Inc.		29,900		501,124
ONEOK, Inc.		2,116		117,438
The Williams Cos., Inc.		12,749		397,896
				1,119,024
				2,923,096
Financial — 8.5%
Banks — 1.0%
The Bank of New York Mellon Corp.		3,935		164,129
Fifth Third Bancorp		2,023		67,973
First Republic Bank		210		30,282
The Goldman Sachs Group, Inc.		967		287,218
KeyCorp.		3,934		67,783
Morgan Stanley		2,304		175,242
Northern Trust Corp.		574		55,379
The PNC Financial Services Group, Inc.		954		150,513
Regions Financial Corp.		3,941		73,894
State Street Corp.		520		32,058
Truist Financial Corp.		2,531		120,045
				1,224,516
Diversified Financial Services — 2.2%
American Express Co.		2,772		384,254
Ameriprise Financial, Inc.		463		110,046
BlackRock, Inc.		228		138,861
The Charles Schwab Corp.		1,137		71,836
CME Group, Inc.		921		188,529
Discover Financial Services		1,416		133,925
Franklin Resources, Inc.		787		18,345
Intercontinental Exchange, Inc.		1,560		146,702
Nasdaq, Inc.		335		51,101
Synchrony Financial		5,444		150,363
T. Rowe Price Group, Inc.		649		73,733

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Visa, Inc. Class A		6,746	$	1,328,220
				2,795,915
Insurance — 3.0%
Aflac, Inc.		3,919		216,838
The Allstate Corp.		1,760		223,045
American International Group, Inc.		4,117		210,502
Aon PLC Class A		733		197,676
Arthur J Gallagher & Co.		1,019		166,138
Chubb Ltd.		2,631		517,202
The Hartford Financial Services Group, Inc.		1,782		116,596
Marsh & McLennan Cos., Inc.		2,333		362,198
MetLife, Inc.		6,312		396,331
Principal Financial Group, Inc.		876		58,508
The Progressive Corp.		4,632		538,563
Prudential Financial, Inc.		2,815		269,339
The Travelers Cos., Inc.		2,101		355,342
Willis Towers Watson PLC		760		150,016
				3,778,294
Private Equity — 0.0%
KKR & Co., Inc.		506		23,423
Real Estate — 0.1%
CBRE Group, Inc. Class A (a)		757		55,723
Real Estate Investment Trusts (REITS) — 2.2%
Alexandria Real Estate Equities, Inc.		696		100,941
American Tower Corp.		993		253,801
AvalonBay Communities, Inc.		667		129,565
Boston Properties, Inc.		516		45,914
Crown Castle International Corp.		1,372		231,017
Digital Realty Trust, Inc.		722		93,737
Equinix, Inc.		289		189,879
Equity Residential		1,481		106,958
Essex Property Trust, Inc.		291		76,099
Extra Space Storage, Inc.		523		88,973
Healthpeak Properties, Inc.		1,399		36,248
Prologis, Inc.		3,491		410,716
Public Storage		1,350		422,104
Realty Income Corp.		1,795		122,527
SBA Communications Corp.		344		110,097
Simon Property Group, Inc.		549		52,111
Ventas, Inc.		682		35,075
VICI Properties, Inc.		2,745		81,774
Welltower, Inc.		1,199		98,738
				2,686,274
				10,564,145
Industrial — 3.9%
Building Materials — 0.2%
Carrier Global Corp.		1,767		63,011
Johnson Controls International PLC		3,224		154,365

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Vulcan Materials Co.		389	$	55,277
				272,653
Electrical Components & Equipment — 0.1%
AMETEK, Inc.		702		77,143
Electronics — 0.5%
Agilent Technologies, Inc.		360		42,757
Amphenol Corp. Class A		1,528		98,373
Garmin Ltd.		241		23,678
Honeywell International, Inc.		1,248		216,915
Keysight Technologies, Inc. (a)		597		82,296
Mettler-Toledo International, Inc. (a)		62		71,224
TE Connectivity Ltd.		1,015		114,847
				650,090
Environmental Controls — 0.5%
Republic Services, Inc.		1,088		142,387
Waste Connections, Inc.		1,195		148,132
Waste Management, Inc.		1,924		294,333
				584,852
Hand & Machine Tools — 0.0%
Stanley Black & Decker, Inc.		169		17,721
Machinery – Diversified — 0.4%
Deere & Co.		927		277,609
Dover Corp.		319		38,701
Otis Worldwide Corp.		1,556		109,963
Rockwell Automation, Inc.		220		43,848
				470,121
Miscellaneous - Manufacturing — 0.2%
Eaton Corp. PLC		1,027		129,392
Illinois Tool Works, Inc.		666		121,379
Trane Technologies PLC		435		56,493
				307,264
Packaging & Containers — 0.1%
Amcor PLC		6,453		80,211
Ball Corp.		612		42,087
				122,298
Transportation — 1.9%
C.H. Robinson Worldwide, Inc.		509		51,597
CSX Corp.		12,766		370,980
Expeditors International of Washington, Inc.		642		62,569
FedEx Corp.		788		178,648
Norfolk Southern Corp.		1,216		276,385
Union Pacific Corp.		3,834		817,716

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
United Parcel Service, Inc. Class B		3,223	$	588,326
				2,346,221
				4,848,363
Technology — 15.8%
Computers — 6.1%
Accenture PLC Class A		2,264		628,599
Apple, Inc.		40,239		5,501,476
Cognizant Technology Solutions Corp. Class A		2,828		190,862
Crowdstrike Holdings, Inc. Class A (a)		242		40,791
Fortinet, Inc. (a)		1,720		97,318
Hewlett Packard Enterprise Co.		8,336		110,535
HP, Inc.		7,769		254,668
International Business Machines Corp.		4,325		610,647
NetApp, Inc.		812		52,975
Seagate Technology Holdings PLC		1,106		79,013
Western Digital Corp. (a)		822		36,850
				7,603,734
Office & Business Equipment — 0.0%
Zebra Technologies Corp. Class A (a)		93		27,338
Semiconductors — 3.5%
Advanced Micro Devices, Inc. (a)		2,727		208,534
Applied Materials, Inc.		3,098		281,856
Broadcom, Inc.		1,964		954,131
Intel Corp.		21,728		812,844
KLA Corp.		620		197,830
Lam Research Corp.		399		170,034
Micron Technology, Inc.		4,844		267,776
NVIDIA Corp.		4,278		648,502
Texas Instruments, Inc.		4,929		757,341
				4,298,848
Software — 6.2%
Adobe, Inc. (a)		1,142		418,040
Akamai Technologies, Inc. (a)		943		86,124
ANSYS, Inc. (a)		175		41,876
Autodesk, Inc. (a)		376		64,657
Cadence Design Systems, Inc. (a)		1,022		153,331
Citrix Systems, Inc.		324		31,483
DocuSign, Inc. (a)		163		9,353
Electronic Arts, Inc.		1,568		190,747
Fidelity National Information Services, Inc.		1,250		114,587
Fiserv, Inc. (a)		1,142		101,604
HubSpot, Inc. (a)		43		12,928
Intuit, Inc.		720		277,517
Microsoft Corp.		18,334		4,708,721
MSCI, Inc.		146		60,174
Oracle Corp.		6,172		431,238
Paychex, Inc.		1,216		138,466
Salesforce, Inc. (a)		1,400		231,056
ServiceNow, Inc. (a)		490		233,005
Snowflake, Inc. Class A (a)		203		28,229
Splunk, Inc. (a)		111		9,819

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Synopsys, Inc. (a)		514	$	156,102
Unity Software, Inc. (a) (b)		124		4,566
Veeva Systems, Inc. Class A (a)		129		25,547
VMware, Inc. Class A		618		70,440
Workday, Inc. Class A (a)		568		79,281
Zoom Video Communications, Inc. Class A (a)		180		19,434
				7,698,325
				19,628,245
Utilities — 2.3%
Electric — 2.3%
Ameren Corp.		785		70,933
American Electric Power Co., Inc.		2,265		217,304
Avangrid, Inc. (b)		92		4,243
CMS Energy Corp.		1,136		76,680
Consolidated Edison, Inc.		2,133		202,848
Dominion Energy, Inc.		2,670		213,093
DTE Energy Co.		749		94,936
Duke Energy Corp.		3,255		348,969
Edison International		648		40,979
Entergy Corp.		449		50,575
Eversource Energy		927		78,304
Exelon Corp.		10,736		486,555
FirstEnergy Corp.		2,376		91,215
NextEra Energy, Inc.		3,362		260,420
Public Service Enterprise Group, Inc.		1,435		90,807
Sempra Energy		1,245		187,086
WEC Energy Group, Inc.		1,956		196,852
Xcel Energy, Inc.		1,853		131,118
				2,842,917
Water — 0.0%
American Water Works Co., Inc.		367		54,599
				2,897,516
TOTAL COMMON STOCK (Cost $81,701,162)				79,589,541
TOTAL EQUITIES (Cost $81,701,162)				79,589,541
	Principal Amount
BONDS & NOTES — 41.5%
CORPORATE DEBT — 12.4%
Agriculture — 0.1%
Archer-Daniels-Midland Co.
2.700% 9/15/51	$	49,000		36,025
Bunge Ltd. Finance Corp.
1.630% 8/17/25		13,000		11,961
3.250% 8/15/26		47,000		44,759

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Cargill, Inc.
3.125% 5/25/51 (c)	$	74,000	$	57,326
				150,071
Airlines — 0.1%
American Airlines 2021-1 Class A Pass Through Trust
2.875% 1/11/36		69,000		58,868
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.500% 10/20/25 (c)		82,995		80,691
				139,559
Banks — 3.3%
Australia & New Zealand Banking Group Ltd. 5 year CMT + 1.700%
2.570% VRN 11/25/35 (c)		225,000		179,945
Bank of America Corp.
5 year CMT + 1.200% 2.482% VRN 9/21/36		162,000		125,996
SOFR + 1.330% 2.972% VRN 2/04/33		66,000		56,387
SOFR + 1.580% 3.311% VRN 4/22/42		135,000		106,353
4.183% 11/25/27		41,000		39,909
3 mo. USD LIBOR + 1.814% 4.244% VRN 4/24/38		23,000		21,150
3 mo. USD LIBOR + 1.310% 4.271% VRN 7/23/29		18,000		17,363
4.750% 4/21/45		63,000		57,486
5 year CMT + 3.231% 6.125% VRN (d)		162,000		156,229
7.750% 5/14/38		20,000		24,733
The Bank of New York Mellon Corp. 5 year CMT + 2.630%
3.750% VRN (d)		156,000		127,453
The Bank of Nova Scotia
4.500% 12/16/25		36,000		35,997
3 mo. USD LIBOR + 2.648% 4.650% VRN (d)		113,000		98,421
Citigroup, Inc.
SOFR + .528% 1.281% VRN 11/03/25		55,000		51,120
4.450% 9/29/27		27,000		26,479
SOFR + 2.086% 4.910% VRN 5/24/33		71,000		70,102
5.500% 9/13/25		54,000		55,532
5.875% 1/30/42		18,000		19,204
6.000% 10/31/33		16,000		16,731
6.625% 6/15/32		14,000		15,295
8.125% 7/15/39		14,000		18,283
Cooperatieve Rabobank UA 1 year CMT + .550%
1.106% VRN 2/24/27 (c)		250,000		220,777
Credit Suisse Group AG SOFR + 2.044%
2.193% VRN 6/05/26 (c)		393,000		356,523
The Goldman Sachs Group, Inc.
SOFR + .798% 1.431% VRN 3/09/27		227,000		201,449
SOFR + 1.090% 1.992% VRN 1/27/32		135,000		106,928
SOFR + 1.248% 2.383% VRN 7/21/32		76,000		61,650
SOFR + 1.410% 3.102% VRN 2/24/33		66,000		56,529
4.250% 10/21/25		32,000		31,788
5.950% 1/15/27		72,000		75,467
6.750% 10/01/37		32,000		35,559
JP Morgan Chase & Co.
3 mo. USD LIBOR + 1.160% 3.702% VRN 5/06/30		320,000		298,291
5.600% 7/15/41		41,000		42,986
KeyBank NA/Cleveland OH
3.900% 4/13/29		356,000		336,197
Mizuho Financial Group, Inc.
2.564% 9/13/31		200,000		160,030

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36	$	203,000	$	156,525
SOFR + 1.485% 3.217% VRN 4/22/42		44,000		34,801
3 mo. USD LIBOR + 1.628% 4.431% VRN 1/23/30		154,000		149,858
PNC Financial Services Group, Inc.
4.626% 6/06/33		108,000		104,665
SVB Financial Group
1.800% 2/02/31 (b)		189,000		146,024
2.100% 5/15/28		87,000		74,495
3.125% 6/05/30		18,000		15,522
3.500% 1/29/25		77,000		75,435
				4,061,667
Biotechnology — 0.5%
Amgen, Inc.
2.200% 2/21/27		347,000		319,538
CSL Finance PLC
4.250% 4/27/32 (c)		65,000		63,729
4.750% 4/27/52 (c)		27,000		25,968
Illumina, Inc.
0.550% 3/23/23		194,000		189,936
				599,171
Commercial Services — 0.3%
Element Fleet Management Corp.
1.600% 4/06/24 (c)		21,000		20,013
Moody's Corp.
4.250% 2/01/29		209,000		207,280
PayPal Holdings, Inc.
3.250% 6/01/50 (b)		27,000		20,447
Triton Container International Ltd.
3.150% 6/15/31 (c)		100,000		81,040
				328,780
Computers — 0.4%
Apple, Inc.
1.650% 5/11/30 (b)		46,000		39,086
2.650% 5/11/50		27,000		20,065
3.000% 6/20/27		177,000		173,312
Dell International LLC/EMC Corp.
4.000% 7/15/24		336,000		335,111
				567,574
Cosmetics & Personal Care — 0.2%
GSK Consumer Healthcare Co.
3.625% 3/24/32 (c)		250,000		231,693
Diversified Financial Services — 0.4%
Air Lease Corp.
2.200% 1/15/27		64,000		55,856
Ally Financial, Inc.
2.200% 11/02/28 (b)		112,000		91,410
Brookfield Finance, Inc.
3.900% 1/25/28		99,000		94,748
The Charles Schwab Corp. 10 year CMT + 3.079%
4.000% VRN (d)		93,000		71,053

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CI Financial Corp.
3.200% 12/17/30	$	65,000	$	50,954
LSEGA Financing PLC
1.375% 4/06/26 (c)		218,000		195,965
				559,986
Electric — 0.2%
Entergy Arkansas LLC
2.650% 6/15/51		72,000		50,271
Entergy Louisiana LLC
4.950% 1/15/45		36,000		34,395
Nevada Power Co.
6.650% 4/01/36		20,000		23,046
Xcel Energy, Inc.
6.500% 7/01/36		99,000		112,574
				220,286
Electronics — 0.1%
Vontier Corp.
2.400% 4/01/28		219,000		183,566
Entertainment — 0.1%
Magallanes, Inc.
5.141% 3/15/52 (c)		49,000		41,397
Magallanes, Inc. Co.
5.391% 3/15/62 (c)		37,000		31,090
				72,487
Food — 0.3%
Conagra Brands, Inc.
4.850% 11/01/28		170,000		167,963
General Mills, Inc.
3.000% 2/01/51 (b)		112,000		81,960
Ingredion, Inc.
3.200% 10/01/26		25,000		23,913
Mars, Inc.
3.950% 4/01/49 (c)		67,000		60,083
				333,919
Health Care – Services — 0.6%
HCA, Inc.
5.000% 3/15/24		328,000		329,886
Humana, Inc.
4.800% 3/15/47		23,000		22,245
Kaiser Foundation Hospitals
2.810% 6/01/41 (b)		110,000		85,734
3.002% 6/01/51		80,000		60,083
Mayo Clinic
3.196% 11/15/61		106,000		80,975
Providence St Joseph Health Obligated Group
2.700% 10/01/51		93,000		63,595
UnitedHealth Group, Inc.
3.125% 5/15/60		36,000		26,478
4.750% 5/15/52		33,000		33,200
				702,196

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Insurance — 0.8%
The Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53	$	158,000	$	138,447
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48		104,000		92,929
Arch Capital Finance LLC
5.031% 12/15/46		27,000		25,560
Arch Capital Group Ltd.
3.635% 6/30/50		49,000		38,349
Athene Global Funding
1.450% 1/08/26 (c)		117,000		104,173
Athene Holding Ltd.
3.950% 5/25/51		16,000		11,978
Brighthouse Financial, Inc.
3.850% 12/22/51		168,000		114,957
GA Global Funding Trust
1.625% 1/15/26 (c)		37,000		33,554
Global Atlantic Fin Co.
3.125% 6/15/31 (c)		72,000		57,426
Jackson Financial, Inc.
5.170% 6/08/27		78,000		77,434
New York Life Insurance Co.
3.750% 5/15/50 (c)		23,000		18,912
Prudential Financial, Inc.
5 year CMT + 3.035% 3.700% VRN 10/01/50		18,000		15,067
3 mo. USD LIBOR + 3.920% 5.625% VRN 6/15/43 (b)		41,000		39,922
3 mo. USD LIBOR + 2.665% 5.700% VRN 9/15/48		99,000		96,142
3 mo. USD LIBOR + 4.175% 5.875% VRN 9/15/42		46,000		45,160
Reinsurance Group of America, Inc.
3.150% 6/15/30		49,000		43,392
3.900% 5/15/29		54,000		50,896
USF&G Capital I
8.500% 12/15/45 (c)		35,000		46,351
				1,050,649
Internet — 0.1%
Alphabet, Inc.
2.250% 8/15/60		32,000		20,981
Expedia Group, Inc.
2.950% 3/15/31		39,000		31,118
Prosus NV
3.832% 2/08/51 (c)		233,000		141,198
				193,297
Investment Companies — 0.2%
Ares Capital Corp.
3.200% 11/15/31		161,000		117,298
Blackstone Secured Lending Fund
2.750% 9/16/26		158,000		138,128
				255,426
Media — 0.6%
Charter Communications Operating LLC/Charter Communications Operating Capital
3.500% 6/01/41		119,000		83,949
3.750% 2/15/28		191,000		175,888
3.850% 4/01/61 (b)		80,000		52,959

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
6.484% 10/23/45	$	32,000	$	31,185
Comcast Corp.
2.937% 11/01/56		43,000		30,019
3.400% 7/15/46		41,000		32,960
3.750% 4/01/40		151,000		132,965
3.969% 11/01/47		23,000		20,013
Discovery Communications LLC
3.950% 3/20/28		56,000		52,270
FactSet Research Systems, Inc.
3.450% 3/01/32		67,000		58,866
Time Warner Cable, Inc.
6.750% 6/15/39		27,000		26,944
The Walt Disney Co.
3.600% 1/13/51		58,000		48,656
				746,674
Mining — 0.0%
Teck Resources Ltd.
6.000% 8/15/40		32,000		32,140
Oil & Gas — 0.1%
BP Capital Markets America, Inc.
3.379% 2/08/61 (b)		95,000		70,728
BP Capital Markets PLC 5 year CMT + 4.036%
4.375% VRN (b) (d)		58,000		54,955
				125,683
Packaging & Containers — 0.3%
Berry Global, Inc.
1.570% 1/15/26		48,000		42,855
Sealed Air Corp.
1.573% 10/15/26 (c)		44,000		38,334
Silgan Holdings, Inc.
1.400% 4/01/26 (c)		49,000		43,824
WRKCo, Inc.
3.000% 6/15/33		27,000		22,954
4.650% 3/15/26		192,000		193,366
				341,333
Pharmaceuticals — 0.5%
AbbVie, Inc.
4.700% 5/14/45		67,000		63,425
Becton Dickinson and Co.
4.685% 12/15/44		23,000		21,354
Bristol-Myers Squibb Co.
2.950% 3/15/32 (b)		59,000		54,203
4.350% 11/15/47		27,000		25,889
Cigna Corp.
2.400% 3/15/30		249,000		214,925
3.400% 3/15/51		47,000		36,401
4.800% 7/15/46		27,000		25,869
CVS Health Corp.
4.300% 3/25/28		10,000		9,911
5.050% 3/25/48		100,000		96,329
6.125% 9/15/39		8,000		8,658

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Merck & Co., Inc.
1.900% 12/10/28	$	40,000	$	35,617
				592,581
Pipelines — 0.8%
Enbridge, Inc.
2.500% 8/01/33		190,000		154,055
Enterprise Products Operating LLC
3 mo. USD LIBOR + 3.033% 5.250% VRN 8/16/77 (b)		41,000		34,119
3 mo. USD LIBOR + 2.570% 5.375% VRN 2/15/78		27,000		21,353
Kinder Morgan, Inc.
3.250% 8/01/50		100,000		69,633
MPLX LP
1.750% 3/01/26		365,000		329,036
4.500% 4/15/38		27,000		23,902
ONEOK, Inc.
6.350% 1/15/31		200,000		209,346
Sabine Pass Liquefaction LLC
4.500% 5/15/30		100,000		96,096
The Williams Cos., Inc.
3.500% 10/15/51		45,000		33,701
				971,241
Real Estate — 0.1%
CBRE Services, Inc.
2.500% 4/01/31		243,000		198,169
Real Estate Investment Trusts (REITS) — 0.8%
Alexandria Real Estate Equities, Inc.
2.950% 3/15/34		78,000		65,158
American Tower Corp.
1.600% 4/15/26		96,000		85,927
2.700% 4/15/31		119,000		98,179
Brixmor Operating Partnership LP
2.250% 4/01/28		24,000		20,619
Crown Castle International Corp.
2.500% 7/15/31		88,000		72,181
3.700% 6/15/26		243,000		234,689
5.200% 2/15/49		11,000		10,599
Equinix, Inc.
3.900% 4/15/32		118,000		107,017
Extra Space Storage LP
2.350% 3/15/32		65,000		51,671
2.550% 6/01/31		89,000		73,419
Host Hotels & Resorts LP
3.500% 9/15/30		84,000		71,989
Kimco Realty Corp.
2.250% 12/01/31		58,000		46,760
Kite Realty Group LP
4.000% 10/01/26		110,000		105,325
				1,043,533
Retail — 0.7%
Advance Auto Parts, Inc.
1.750% 10/01/27		13,000		11,064
3.900% 4/15/30		323,000		294,446

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Alimentation Couche-Tard, Inc.
3.625% 5/13/51 (b) (c)	$	71,000	$	51,755
AutoZone, Inc.
1.650% 1/15/31		41,000		32,236
The Home Depot, Inc.
2.375% 3/15/51		48,000		32,622
2.700% 4/15/30		97,000		88,202
Lowe's Cos., Inc.
3.000% 10/15/50		90,000		63,305
McDonald's Corp.
3.300% 7/01/25		182,000		180,969
Starbucks Corp.
4.450% 8/15/49		86,000		77,587
				832,186
Semiconductors — 0.4%
Microchip Technology, Inc.
0.983% 9/01/24		49,000		45,737
Micron Technology, Inc.
2.703% 4/15/32		75,000		59,975
4.185% 2/15/27		322,000		314,713
Skyworks Solutions, Inc.
1.800% 6/01/26		36,000		31,971
				452,396
Software — 0.2%
Electronic Arts, Inc.
2.950% 2/15/51 (b)		42,000		30,828
Microsoft Corp.
2.921% 3/17/52		80,000		63,586
Oracle Corp.
3.600% 4/01/40		197,000		147,440
Workday, Inc.
3.800% 4/01/32 (b)		50,000		45,824
				287,678
Telecommunications — 0.2%
Verizon Communications, Inc.
3.550% 3/22/51		47,000		37,929
3.700% 3/22/61		47,000		37,228
3.875% 2/08/29		180,000		174,499
				249,656
Transportation — 0.0%
CSX Corp.
4.750% 11/15/48		18,000		17,684
TOTAL CORPORATE DEBT (Cost $18,330,450)				15,541,281
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 3.6%
Automobile Asset-Backed Securities — 0.4%
Avis Budget Rental Car Funding AESOP LLC, Series 2021-2A, Class A
1.660% 2/20/28 (c)		150,000		134,551

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Enterprise Fleet Financing LLC, Series 2021-3, Class A3
1.220% 8/20/27 (c)	$	234,000	$	216,864
Hyundai Auto Receivables Trust, Series 2021-C, Class A4
1.030% 12/15/27		140,000		130,862
Toyota Auto Receivables Owner Trust, Series 2021-D, Class A4
1.020% 3/15/27		70,000		65,355
				547,632
Commercial Mortgage-Backed Securities — 1.1%
Bank
Series 2019-BN17, Class B, 4.128% VRN 4/15/52 (e)		29,000		27,048
Series 2019-BN16, Class AS, 4.267% 2/15/52		31,333		29,911
Series 2019-BN16, Class B, 4.438% VRN 2/15/52 (e)		24,330		23,132
BBCMS Mortgage Trust, Series 2020-C7, Class AS
2.444% 4/15/53		57,000		47,900
Benchmark Mortgage Trust
Class AS, 3.352% 12/15/62		150,000		134,943
Class AAB, 3.933% 3/15/52		274,000		269,473
BX Commercial Mortgage Trust
Class A, 1 mo. USD LIBOR + .700% 2.024% FRN 9/15/36 (c)		115,000		110,976
Class C, 1 mo. USD LIBOR + 1.100% 2.424% FRN 9/15/36 (c)		100,000		93,291
Citigroup Commercial Mortgage Trust, Series 2017-C4, Class C,
4.346% VRN 10/12/50 (e)		70,000		63,250
Commercial Mortgage Pass-Through Certificates, Series 2014-LC17, Class C,
4.696% VRN 10/10/47 (e)		100,000		96,727
GS Mortgage Securities Trust
Series 2020-GC45, Class A5, 2.911% 2/13/53		140,000		126,933
Series 2017-GS6, Class B, 3.869% 5/10/50		79,000		73,902
Life Mortgage Trust
Class A, 1 mo. USD LIBOR + .700% 2.024% FRN 3/15/38 (c)		98,297		94,241
Class B, 1 mo. USD LIBOR + .880% 2.204% FRN 3/15/38 (c)		98,297		94,113
Morgan Stanley Capital I Trust, Series 2018-H3, Class B,
4.620% VRN 7/15/51 (e)		20,000		19,150
Wells Fargo Commercial Mortgage Trust
Series 2018-C45, Class AS, 4.405% VRN 6/15/51 (e)		30,000		28,810
Series 2018-C45, Class B, 4.556% 6/16/51		10,000		9,337
				1,343,137
Other Asset-Backed Securities — 0.5%
AMSR Trust, Series 2021-SFR3, Class B
1.726% 10/17/38 (c)		130,000		113,506
Dllmt LLC, Series 2021-1A, Class A4
1.240% 6/20/29 (c)		150,000		141,793
MVW LLC, Series 2021-2A, Class A
1.430% 5/20/39 (c)		256,208		236,068
Progress Residential Trust, Series 2021-SFR10, Class A
2.393% 12/17/40 (c)		100,000		87,692
				579,059
Whole Loan Collateral Collateralized Mortgage Obligations — 1.6%
Angel Oak Mortgage Trust
Series 2021-8, Class A1, 1.820% VRN 11/25/66 (c) (e)		260,884		232,922
Series 2022-1, Class A1, 2.881% STEP 12/25/66 (c)		254,775		242,041
Bayview MSR Opportunity Master Fund Trust
Series 2021-5, Class A2, 2.500% VRN 11/25/51 (c) (e)		139,501		118,887
Series 2021-5, Class A1, 3.000% VRN 11/25/51 (c) (e)		114,406		102,138

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Flagstar Mortgage Trust, Series 2021-11IN, Class A6,
2.500% VRN 11/25/51 (c) (e)	$	244,697	$	221,164
Imperial Fund Mortgage Trust, Series 2021-NQM3, Class A1,
1.595% VRN 11/25/56 (c) (e)		156,187		139,849
JP Morgan Mortgage Trust, Series 2021-LTV2, Class A1,
2.520% VRN 5/25/52 (c) (e)		258,685		219,714
Onslow Bay Financial LLC, Series 2022-NQM1, Class A1,
2.305% VRN 11/25/61 (c) (e)		238,033		208,498
Starwood Mortgage Residential Trust
Series 2021-6, Class A1, 1.920% VRN 11/25/66 (c) (e)		273,182		238,374
Series 2022-1, Class A1, 2.447% VRN 12/25/66 (c) (e)		293,124		269,449
				1,993,036
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $4,948,857)				4,462,864
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (f) — 9.4%
Pass-Through Securities — 9.4%
Federal Home Loan Mortgage Corp.
Pool #RA6233 2.000% 11/01/51		524,691		457,328
Pool #SD8174 3.000% 10/01/51		456,643		427,373
Pool #RA7484 4.000% 6/01/52		468,653		463,358
Federal National Mortgage Association
Pool #CB1787 2.000% 10/01/51		512,213		446,611
Pool #CB1782 2.000% 10/01/51		773,199		674,171
Pool #MA4361 2.500% 6/01/36		326,300		312,869
Pool #CB2074 2.500% 11/01/51		402,856		363,773
Pool #BO7245 3.000% 1/01/50		307,693		289,858
3.500% 5/01/52		499,182		481,991
Uniform Mortgage Backed Securities TBA
2.000% 7/18/37 (g)		3,500,000		3,271,133
2.000% 8/11/52 (g)		1,129,000		980,907
2.500% 8/11/52 (g)		2,200,000		1,979,484
3.000% 8/11/52 (g)		350,000		326,074
4.000% 4/25/52 (g)		750,000		739,131
4.500% 7/14/52 (g)		500,000		502,500
				11,716,561
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $12,089,594)				11,716,561
U.S. TREASURY OBLIGATIONS — 16.1%
U.S. Treasury Bonds & Notes — 16.1%
U.S. Treasury Bond
2.250% 8/15/49		873,900		723,017
2.250% 2/15/52		1,337,600		1,110,417
3.250% 5/15/42		1,423,200		1,397,183
U.S. Treasury Note
0.125% 5/15/23		1,400,000		1,366,859
0.250% 11/15/23		2,000,000		1,928,049
0.375% 4/30/25		1,543,600		1,433,739
2.250% 4/30/24		750,000		740,742
2.500% 5/31/24 (b)		2,250,600		2,232,106
2.625% 5/31/27		2,406,500		2,364,614
2.750% 4/30/27		700,000		691,633

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
2.750% 5/31/29	$	1,974,400	$	1,939,729
2.875% 6/15/25		2,526,400		2,519,096
2.875% 4/30/29		150,000		148,544
2.875% 5/15/32		1,447,200		1,434,990
				20,030,718
TOTAL U.S. TREASURY OBLIGATIONS (Cost $20,612,715)				20,030,718
TOTAL BONDS & NOTES (Cost $55,981,616)				51,751,424
	Number of Shares
MUTUAL FUNDS — 2.2%
Diversified Financial Services — 2.2%
State Street Navigator Securities Lending Government Money Market Portfolio (h)		2,769,480		2,769,480
TOTAL MUTUAL FUNDS (Cost $2,769,480)				2,769,480
TOTAL LONG-TERM INVESTMENTS (Cost $140,452,258)				134,110,445
	Principal Amount
SHORT-TERM INVESTMENTS — 2.3%
Repurchase Agreement — 2.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (i)	$	2,762,359		2,762,359
U.S. Treasury Bill — 0.1%
U.S. Treasury Bill
0.950% 9/15/22 (j) (k)		2,000		1,993
1.482% 11/17/22 (j) (k)		87,000		86,312
2.005% 11/17/22 (j) (k)		1,000		992
2.041% 11/17/22 (j) (k)		4,000		3,969
2.134% 11/17/22 (j) (k)		3,000		2,976
				96,242
TOTAL SHORT-TERM INVESTMENTS (Cost $2,858,804)				2,858,601
TOTAL INVESTMENTS — 109.9% (Cost $143,311,062) (l)				136,969,046
Other Assets/(Liabilities) — (9.9)%				(12,382,606)
NET ASSETS — 100.0%			$	124,586,440

Abbreviation Legend

FRN Floating Rate Note

STEP Step Up Bond

TBA To Be Announced

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $3,129,814 or 2.51% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $428,867 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $5,497,898 or 4.41% of net assets.

(d) Security is perpetual and has no stated maturity date.

(e) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at June 30, 2022.

(f) May contain securities that are issued by a U.S. Government Agency, but are unsecured and are not guaranteed by a U.S. Government Agency.

(g) A portion of this security is purchased on a when-issued, delayed-delivery or forward commitment basis.

(h) Represents investment of security lending cash collateral. (Note 2).

(i) Maturity value of $2,762,377. Collateralized by U.S. Government Agency obligations with a rate of 0.750%, maturity date of 11/15/24, and an aggregate market value, including accrued interest, of $2,817,617.

(j) The rate shown represents yield-to-maturity.

(k) All or a portion of this security is pledged/held as collateral for open derivatives.

(l) See Note 3 for aggregate cost for federal tax purposes.

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Short
U.S. Treasury Note 10 Year	9/21/22		17	$	(2,042,620)	$	27,589
U.S. Treasury Ultra 10 Year	9/21/22		11		(1,423,433)		22,308
U.S. Treasury Note 2 Year	9/30/22		8		(1,689,984)		9,859
U.S. Treasury Note 5 Year	9/30/22		9		(1,020,071)		9,821
						$	69,577

MassMutual Disciplined Value Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.5%
COMMON STOCK — 98.5%
Basic Materials — 3.7%
Chemicals — 2.4%
International Flavors & Fragrances, Inc.		6,090	$	725,441
LyondellBasell Industries NV Class A		8,649		756,441
The Mosaic Co.		1,012		47,797
Westlake Corp.		3,378		331,112
				1,860,791
Iron & Steel — 1.3%
Nucor Corp.		2,587		270,108
Reliance Steel & Aluminum Co.		1,155		196,188
Steel Dynamics, Inc.		7,399		489,444
United States Steel Corp.		391		7,003
				962,743
				2,823,534
Communications — 6.2%
Advertising — 1.1%
Omnicom Group, Inc.		12,592		800,977
Internet — 3.7%
Alphabet, Inc. Class A (a)		267		581,863
Alphabet, Inc. Class C (a)		163		356,554
F5, Inc. (a)		278		42,545
GoDaddy, Inc. Class A (a)		1,848		128,547
Meta Platforms, Inc. Class A (a)		10,532		1,698,285
				2,807,794
Media — 0.8%
Paramount Global Class A		848		23,116
Paramount Global Class B		7,622		188,111
Warner Bros Discovery, Inc. (a)		32,240		432,661
				643,888
Telecommunications — 0.6%
Lumen Technologies, Inc.		41,494		452,700
				4,705,359
Consumer, Cyclical — 5.6%
Auto Parts & Equipment — 0.4%
BorgWarner, Inc.		8,108		270,564

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Distribution & Wholesale — 0.1%
Core & Main, Inc. Class A (a)		4,006	$	89,334
Home Builders — 1.1%
D.R. Horton, Inc.		6,624		438,443
NVR, Inc. (a)		38		152,157
Thor Industries, Inc. (b)		2,867		214,251
				804,851
Home Furnishing — 0.2%
Tempur Sealy International, Inc.		8,822		188,526
Leisure Time — 0.2%
Brunswick Corp.		1,051		68,714
Polaris, Inc. (b)		892		88,558
				157,272
Retail — 3.6%
AutoNation, Inc. (a)		1,759		196,586
Lithia Motors, Inc.		441		121,191
McDonald's Corp.		3,311		817,420
Ollie's Bargain Outlet Holdings, Inc. (a)		2,140		125,725
RH (a)		305		64,739
Walmart, Inc.		11,286		1,372,152
				2,697,813
				4,208,360
Consumer, Non-cyclical — 30.3%
Agriculture — 1.8%
Philip Morris International, Inc.		13,898		1,372,289
Beverages — 2.1%
The Coca-Cola Co.		292		18,370
Monster Beverage Corp. (a)		7,569		701,646
PepsiCo, Inc.		5,229		871,465
				1,591,481
Biotechnology — 1.6%
Certara, Inc. (a)		713		15,301
Moderna, Inc. (a)		1,917		273,843
Regeneron Pharmaceuticals, Inc. (a)		738		436,254
Vertex Pharmaceuticals, Inc. (a)		1,820		512,858
				1,238,256
Commercial Services — 3.6%
Clarivate PLC (a)		9,411		130,436
Dun & Bradstreet Holdings, Inc. (a)		9,056		136,112
Equifax, Inc.		2,443		446,532
Global Payments, Inc.		4,268		472,211
Moody's Corp.		1,039		282,577
Rollins, Inc.		1,338		46,723

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
S&P Global, Inc.		3,617	$	1,219,146
				2,733,737
Cosmetics & Personal Care — 2.1%
The Procter & Gamble Co.		10,819		1,555,664
Food — 3.0%
Campbell Soup Co.		4,863		233,667
General Mills, Inc.		7,282		549,427
Kellogg Co.		11,191		798,366
Mondelez International, Inc. Class A		11,210		696,029
				2,277,489
Health Care – Products — 6.6%
Abbott Laboratories		7,923		860,834
Align Technology, Inc. (a)		1,575		372,755
Avantor, Inc. (a)		414		12,875
Danaher Corp.		5,114		1,296,501
Henry Schein, Inc. (a)		4,098		314,481
Hologic, Inc. (a)		7,612		527,512
Quidelortho Corp. (a)		571		55,490
Thermo Fisher Scientific, Inc.		2,762		1,500,539
				4,940,987
Health Care – Services — 2.6%
Centene Corp. (a)		1,989		168,289
Elevance Health, Inc.		1,167		563,171
Quest Diagnostics, Inc.		446		59,309
Syneos Health, Inc. (a)		2,966		212,603
UnitedHealth Group, Inc.		1,856		953,297
				1,956,669
Household Products & Wares — 0.7%
Kimberly-Clark Corp.		3,194		431,669
Reynolds Consumer Products, Inc.		4,148		113,116
				544,785
Pharmaceuticals — 6.2%
Bristol-Myers Squibb Co.		18,434		1,419,418
Jazz Pharmaceuticals PLC (a)		2,959		461,634
McKesson Corp.		2,444		797,257
Pfizer, Inc.		38,349		2,010,638
				4,688,947
				22,900,304
Energy — 4.9%
Oil & Gas — 4.9%
APA Corp.		6,057		211,389
ConocoPhillips		13,176		1,183,337
Coterra Energy, Inc.		8,475		218,570
Devon Energy Corp.		13,388		737,813
HF Sinclair Corp.		8,314		375,460
Marathon Oil Corp.		29,861		671,275

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
PDC Energy, Inc.		1,354	$	83,420
Pioneer Natural Resources Co.		858		191,403
				3,672,667
				3,672,667
Financial — 26.2%
Banks — 5.6%
The Bank of New York Mellon Corp.		9,418		392,825
Citigroup, Inc.		22,233		1,022,496
JP Morgan Chase & Co.		16,827		1,894,888
KeyCorp.		33,248		572,863
US Bancorp		7,341		337,833
				4,220,905
Diversified Financial Services — 6.3%
Affiliated Managers Group, Inc.		4,683		546,038
Apollo Global Management, Inc.		3,396		164,638
BlackRock, Inc.		1,601		975,073
Capital One Financial Corp.		778		81,060
The Charles Schwab Corp.		3,154		199,270
CME Group, Inc.		666		136,330
Coinbase Global, Inc. Class A (a)		1,721		80,921
Discover Financial Services		3,482		329,328
Franklin Resources, Inc.		4,282		99,813
Intercontinental Exchange, Inc.		3,583		336,945
Nasdaq, Inc.		5,037		768,344
OneMain Holdings, Inc.		9,540		356,605
Rocket Cos., Inc. Class A		8,224		60,529
Synchrony Financial		2,835		78,303
Tradeweb Markets, Inc. Class A		1,673		114,182
Upstart Holdings, Inc. (a)		584		18,466
Virtu Financial, Inc. Class A		18,147		424,821
				4,770,666
Insurance — 10.0%
Aflac, Inc.		16,277		900,607
American International Group, Inc.		3,060		156,458
Arthur J Gallagher & Co.		5,373		876,014
Berkshire Hathaway, Inc. Class B (a)		6,968		1,902,403
Brown & Brown, Inc.		13,357		779,247
Equitable Holdings, Inc.		5,422		141,352
Fidelity National Financial, Inc.		20,618		762,041
Globe Life, Inc.		2,572		250,693
Lincoln National Corp.		570		26,659
Loews Corp.		8,670		513,784
MetLife, Inc.		10,071		632,358
The Progressive Corp.		2,212		257,189
Reinsurance Group of America, Inc.		824		96,647
Voya Financial, Inc.		3,928		233,834
				7,529,286
Real Estate — 0.9%
CBRE Group, Inc. Class A (a)		9,389		691,124

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Real Estate Investment Trusts (REITS) — 3.2%
Healthcare Trust of America, Inc. Class A		23,414	$	653,485
Highwoods Properties, Inc.		8,429		288,187
Omega Healthcare Investors, Inc.		5,802		163,558
Realty Income Corp.		2,765		188,739
SBA Communications Corp.		1,906		610,015
SL Green Realty Corp. (b)		967		44,627
STORE Capital Corp.		10,398		271,180
Vornado Realty Trust		259		7,405
WP Carey, Inc.		2,010		166,549
				2,393,745
Savings & Loans — 0.2%
New York Community Bancorp, Inc. (b)		17,184		156,890
				19,762,616
Industrial — 10.6%
Aerospace & Defense — 3.1%
General Dynamics Corp.		2,907		643,174
Raytheon Technologies Corp.		13,081		1,257,215
Teledyne Technologies, Inc. (a)		787		295,212
TransDigm Group, Inc. (a)		272		145,974
				2,341,575
Building Materials — 0.2%
Hayward Holdings, Inc. (a)		10,806		155,498
Electrical Components & Equipment — 0.9%
Emerson Electric Co.		8,450		672,113
Electronics — 1.3%
Arrow Electronics, Inc. (a)		6,635		743,717
nVent Electric PLC		5,460		171,062
Vontier Corp.		3,014		69,292
				984,071
Hand & Machine Tools — 1.0%
Regal Rexnord Corp.		2,031		230,559
Stanley Black & Decker, Inc.		5,303		556,073
				786,632
Machinery – Diversified — 0.9%
Dover Corp.		159		19,290
Enovis Corp. (a)		175		9,625
Esab Corp.		1		44
Ingersoll Rand, Inc.		13,545		569,973
The Middleby Corp. (a)		631		79,102
				678,034
Miscellaneous - Manufacturing — 0.7%
3M Co.		4,013		519,322
Transportation — 2.5%
C.H. Robinson Worldwide, Inc.		5,703		578,113

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Expeditors International of Washington, Inc.		3,433	$	334,580
Knight-Swift Transportation Holdings, Inc.		5,273		244,087
Landstar System, Inc.		4,968		722,447
				1,879,227
				8,016,472
Technology — 9.3%
Computers — 2.3%
CACI International, Inc. Class A (a)		403		113,557
Dell Technologies, Inc.		6,181		285,624
International Business Machines Corp.		1,760		248,494
Leidos Holdings, Inc.		2,657		267,587
Science Applications International Corp.		8,298		772,544
				1,687,806
Office & Business Equipment — 0.3%
Zebra Technologies Corp. Class A (a)		678		199,298
Semiconductors — 3.0%
Analog Devices, Inc.		6,698		978,511
Micron Technology, Inc.		1,549		85,629
Skyworks Solutions, Inc.		3,007		278,568
Texas Instruments, Inc.		6,104		937,880
				2,280,588
Software — 3.7%
Activision Blizzard, Inc.		8,080		629,109
Black Knight, Inc. (a)		3,856		252,144
Definitive Healthcare Corp. (a)		2,040		46,777
Doximity, Inc. Class A (a)		2,418		84,195
Fidelity National Information Services, Inc.		5,826		534,069
Fiserv, Inc. (a)		6,576		585,067
Oracle Corp.		3,351		234,134
Playtika Holding Corp. (a)		5,266		69,722
Take-Two Interactive Software, Inc. (a)		483		59,182
Tyler Technologies, Inc. (a)		145		48,210
VMware, Inc. Class A		2,026		230,923
Zoom Video Communications, Inc. Class A (a)		363		39,193
				2,812,725
				6,980,417
Utilities — 1.7%
Electric — 0.7%
NRG Energy, Inc.		14,187		541,518
Gas — 1.0%
National Fuel Gas Co.		11,611		766,906

1,308,424

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
TOTAL COMMON STOCK (Cost $76,244,164)			$	74,378,153
TOTAL EQUITIES (Cost $76,244,164)				74,378,153
MUTUAL FUNDS — 0.8%
Diversified Financial Services — 0.8%
iShares Russell 1000 Value ETF		3,596		521,312
State Street Navigator Securities Lending Government Money Market Portfolio (c)		89,625		89,625
				610,937
TOTAL MUTUAL FUNDS (Cost $625,035)				610,937
TOTAL LONG-TERM INVESTMENTS (Cost $76,869,199)				74,989,090
	Principal Amount
SHORT-TERM INVESTMENTS — 0.9%
Repurchase Agreement — 0.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (d)	$	660,237		660,237
TOTAL SHORT-TERM INVESTMENTS (Cost $660,237)				660,237
TOTAL INVESTMENTS — 100.2% (Cost $77,529,436) (e)				75,649,327
Other Assets/(Liabilities) — (0.2)%				(118,594)
NET ASSETS — 100.0%			$	75,530,733

Abbreviation Legend

ETF Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $503,199 or 0.67% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $425,659 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c) Represents investment of security lending cash collateral. (Note 2).

(d) Maturity value of $660,241. Collateralized by U.S. Government Agency obligations with a rate of 0.750%, maturity date of 11/15/24 , and an aggregate market value, including accrued interest, of $673,513.

(e) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Main Street Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.0%
COMMON STOCK — 99.0%
Basic Materials — 0.8%
Chemicals — 0.8%
Valvoline, Inc.		25,507	$	735,367
Communications — 12.1%
Internet — 7.0%
Airbnb, Inc. Class A (a)		10,394		925,898
Alphabet, Inc. Class A (a)		1,271		2,769,839
Amazon.com, Inc. (a)		26,033		2,764,965
				6,460,702
Media — 1.0%
Comcast Corp. Class A		24,986		980,451
Telecommunications — 4.1%
Motorola Solutions, Inc.		4,413		924,965
Verizon Communications, Inc.		55,689		2,826,216
				3,751,181
				11,192,334
Consumer, Cyclical — 4.3%
Auto Manufacturers — 1.6%
General Motors Co. (a)		26,070		827,983
Tesla, Inc. (a)		980		659,952
				1,487,935
Home Builders — 0.8%
D.R. Horton, Inc.		10,678		706,777
Retail — 1.9%
O'Reilly Automotive, Inc. (a)		2,163		1,366,496
Target Corp.		2,556		360,984
				1,727,480
				3,922,192
Consumer, Non-cyclical — 24.4%
Beverages — 2.5%
The Coca-Cola Co.		26,385		1,659,880
Constellation Brands, Inc. Class A		2,848		663,755
				2,323,635

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Biotechnology — 1.0%
Seagen, Inc. (a)		5,082	$	899,209
Commercial Services — 0.1%
TransUnion		1,288		103,027
Cosmetics & Personal Care — 3.0%
Coty, Inc. Class A (a)		23,601		189,044
The Procter & Gamble Co.		17,986		2,586,207
				2,775,251
Food — 2.0%
Mondelez International, Inc. Class A		14,570		904,651
Sysco Corp.		11,470		971,624
				1,876,275
Health Care – Products — 1.2%
Avantor, Inc. (a)		9,490		295,139
The Cooper Cos., Inc.		2,562		802,214
				1,097,353
Health Care – Services — 5.0%
HCA Healthcare, Inc.		6,870		1,154,572
Tenet Healthcare Corp. (a)		9,646		506,994
UnitedHealth Group, Inc.		5,792		2,974,945
				4,636,511
Pharmaceuticals — 9.6%
AstraZeneca PLC Sponsored ADR		26,877		1,775,764
Bayer AG Registered		12,450		739,698
CVS Health Corp.		19,639		1,819,750
Eli Lilly & Co.		8,844		2,867,490
Johnson & Johnson		8,926		1,584,454
				8,787,156
				22,498,417
Energy — 4.5%
Oil & Gas — 3.1%
APA Corp.		20,707		722,674
Exxon Mobil Corp.		24,352		2,085,505
				2,808,179
Pipelines — 1.4%
Cheniere Energy, Inc.		5,903		785,276
Magellan Midstream Partners LP (b)		10,668		509,504
				1,294,780
				4,102,959

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Financial — 12.7%
Banks — 3.2%
First Citizens BancShares, Inc. Class A		1,438	$	940,136
JP Morgan Chase & Co.		16,331		1,839,034
SVB Financial Group (a)		351		138,641
				2,917,811
Diversified Financial Services — 3.4%
American Express Co.		10,043		1,392,161
The Charles Schwab Corp.		7,473		472,144
Intercontinental Exchange, Inc.		10,084		948,300
Rocket Cos., Inc. Class A		51,684		380,394
				3,192,999
Insurance — 3.3%
The Allstate Corp.		10,926		1,384,652
Equitable Holdings, Inc.		63,348		1,651,482
				3,036,134
Real Estate Investment Trusts (REITS) — 2.8%
Duke Realty Corp.		2,176		119,571
Prologis, Inc.		20,966		2,466,650
				2,586,221
				11,733,165
Industrial — 12.0%
Aerospace & Defense — 2.3%
Raytheon Technologies Corp.		21,882		2,103,079
Building Materials — 1.2%
Vulcan Materials Co.		7,504		1,066,319
Electronics — 0.7%
Honeywell International, Inc.		3,801		660,652
Environmental Controls — 0.7%
Waste Connections, Inc.		5,220		647,071
Machinery – Diversified — 2.9%
Deere & Co.		3,979		1,191,591
Otis Worldwide Corp.		20,373		1,439,760
				2,631,351
Transportation — 4.2%
FedEx Corp.		1,975		447,752
Union Pacific Corp.		4,643		990,259
United Parcel Service, Inc. Class B		13,594		2,481,449
				3,919,460
				11,027,932

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Technology — 25.8%
Computers — 7.1%
Accenture PLC Class A		3,880	$	1,077,282
Amdocs Ltd.		5,601		466,619
Apple, Inc.		34,364		4,698,246
Crowdstrike Holdings, Inc. Class A (a)		1,743		293,800
				6,535,947
Semiconductors — 3.7%
Advanced Micro Devices, Inc. (a)		12,644		966,887
Applied Materials, Inc.		11,132		1,012,789
QUALCOMM, Inc.		11,065		1,413,443
				3,393,119
Software — 15.0%
Electronic Arts, Inc.		8,143		990,596
Fiserv, Inc. (a)		12,639		1,124,492
Manhattan Associates, Inc. (a)		2,372		271,831
Microsoft Corp.		25,499		6,548,908
Salesforce, Inc. (a)		6,406		1,057,246
ServiceNow, Inc. (a)		1,751		832,636
Synopsys, Inc. (a)		2,188		664,496
VMware, Inc. Class A		20,784		2,368,960
				13,859,165
				23,788,231
Utilities — 2.4%
Electric — 2.4%
FirstEnergy Corp.		49,717		1,908,636
The Southern Co.		3,924		279,820
				2,188,456
				2,188,456
TOTAL COMMON STOCK (Cost $84,956,894)				91,189,053
TOTAL EQUITIES (Cost $84,956,894)				91,189,053
TOTAL LONG-TERM INVESTMENTS (Cost $84,956,894)				91,189,053
	Principal Amount
SHORT-TERM INVESTMENTS — 1.1%
Repurchase Agreement — 1.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (c)	$	973,633		973,633
TOTAL SHORT-TERM INVESTMENTS (Cost $973,633)				973,633

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Principal Amount	Value
TOTAL INVESTMENTS — 100.1% (Cost $85,930,527) (d)		$	92,162,686
Other Assets/(Liabilities) — (0.1)%			(80,209)
NET ASSETS — 100.0%		$	92,082,477

Abbreviation Legend

ADR American Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Security is a Master Limited Partnership.

(c) Maturity value of $973,639. Collateralized by U.S. Government Agency obligations with a rate of 0.750%, maturity date of 11/15/24, and an aggregate market value, including accrued interest, of $993,178.

(d) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Disciplined Growth Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.0%
COMMON STOCK — 99.0%
Basic Materials — 0.4%
Chemicals — 0.4%
CF Industries Holdings, Inc.		5,029	$	431,136
The Mosaic Co.		6,294		297,266
				728,402
Mining — 0.0%
MP Materials Corp. (a)		1,305		41,864
				770,266
Communications — 13.8%
Internet — 13.1%
Alphabet, Inc. Class A (a)		2,300		5,012,298
Alphabet, Inc. Class C (a)		1,433		3,134,616
Amazon.com, Inc. (a)		76,977		8,175,727
CDW Corp.		11,885		1,872,601
eBay, Inc.		11,395		474,830
GoDaddy, Inc. Class A (a)		8,667		602,876
Match Group, Inc. (a)		11,658		812,446
Meta Platforms, Inc. Class A (a)		9,896		1,595,730
Netflix, Inc. (a)		3,853		673,774
				22,354,898
Media — 0.7%
Charter Communications, Inc. Class A (a)		749		350,929
FactSet Research Systems, Inc.		1,746		671,459
Nexstar Media Group, Inc. Class A		571		93,005
				1,115,393
				23,470,291
Consumer, Cyclical — 10.5%
Apparel — 0.6%
NIKE, Inc. Class B		9,850		1,006,670
Auto Manufacturers — 3.0%
Tesla, Inc. (a)		7,693		5,180,620
Auto Parts & Equipment — 0.3%
Allison Transmission Holdings, Inc.		13,225		508,501
Distribution & Wholesale — 1.3%
Core & Main, Inc. Class A (a)		30,905		689,182

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Pool Corp.		4,140	$	1,454,092
				2,143,274
Home Builders — 1.0%
D.R. Horton, Inc.		18,155		1,201,680
NVR, Inc. (a)		138		552,571
				1,754,251
Leisure Time — 0.8%
Brunswick Corp.		5,393		352,594
YETI Holdings, Inc. (a)		24,570		1,063,144
				1,415,738
Retail — 3.5%
AutoZone, Inc. (a)		425		913,376
Costco Wholesale Corp.		4,586		2,197,978
Lowe's Cos., Inc.		4,409		770,120
Lululemon Athletica, Inc. (a)		2,446		666,804
McDonald's Corp.		1,934		477,466
Olaplex Holdings, Inc. (a) (b)		35,940		506,395
RH (a)		1,240		263,202
Victoria's Secret & Co. (a)		2,134		59,688
Williams-Sonoma, Inc.		1,157		128,369
				5,983,398
				17,992,452
Consumer, Non-cyclical — 19.7%
Beverages — 2.5%
The Coca-Cola Co.		24,923		1,567,906
Monster Beverage Corp. (a)		21,904		2,030,501
PepsiCo, Inc.		4,094		682,306
				4,280,713
Biotechnology — 1.9%
Exelixis, Inc. (a)		1,496		31,147
Maravai LifeSciences Holdings, Inc. Class A (a)		17,132		486,720
Moderna, Inc. (a)		4,352		621,683
Novavax, Inc. (a) (b)		6,235		320,666
Regeneron Pharmaceuticals, Inc. (a)		1,009		596,450
Vertex Pharmaceuticals, Inc. (a)		4,287		1,208,034
				3,264,700
Commercial Services — 3.9%
Automatic Data Processing, Inc.		832		174,753
Equifax, Inc.		1,530		279,653
FleetCor Technologies, Inc. (a)		8,646		1,816,611
Gartner, Inc. (a)		6,673		1,613,732
MarketAxess Holdings, Inc.		824		210,952
Moody's Corp.		3,251		884,175
Robert Half International, Inc.		4,819		360,895
United Rentals, Inc. (a)		367		89,148

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Verisk Analytics, Inc.		6,544	$	1,132,701
				6,562,620
Cosmetics & Personal Care — 0.6%
Colgate-Palmolive Co.		5,950		476,833
The Procter & Gamble Co.		4,083		587,095
				1,063,928
Food — 0.1%
The Hershey Co.		325		69,927
Health Care – Products — 3.4%
Align Technology, Inc. (a)		3,823		904,789
Avantor, Inc. (a)		37,915		1,179,157
Danaher Corp.		6,392		1,620,500
IDEXX Laboratories, Inc. (a)		418		146,605
Intuitive Surgical, Inc. (a)		1,406		282,198
Thermo Fisher Scientific, Inc.		2,949		1,602,133
				5,735,382
Health Care – Services — 3.9%
Elevance Health, Inc.		906		437,217
Syneos Health, Inc. (a)		7,029		503,839
UnitedHealth Group, Inc.		11,249		5,777,824
				6,718,880
Household Products & Wares — 0.5%
Church & Dwight Co., Inc.		9,135		846,449
Pharmaceuticals — 2.9%
AbbVie, Inc.		20,402		3,124,770
AmerisourceBergen Corp.		13,267		1,877,015
				5,001,785
				33,544,384
Energy — 1.5%
Energy – Alternate Sources — 0.1%
Enphase Energy, Inc. (a)		658		128,468
Oil & Gas — 1.4%
Coterra Energy, Inc.		14,979		386,309
EOG Resources, Inc.		903		99,727
PDC Energy, Inc.		5,281		325,362
Pioneer Natural Resources Co.		3,099		691,325
Texas Pacific Land Corp.		590		877,932
				2,380,655
				2,509,123
Financial — 10.1%
Diversified Financial Services — 5.7%
Mastercard, Inc. Class A		13,567		4,280,117
Rocket Cos., Inc. Class A		35,125		258,520

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Tradeweb Markets, Inc. Class A		4,315	$	294,499
Upstart Holdings, Inc. (a)		3,355		106,085
Visa, Inc. Class A		24,442		4,812,386
				9,751,607
Insurance — 2.6%
Aon PLC Class A		424		114,344
Arthur J Gallagher & Co.		10,698		1,744,202
Brown & Brown, Inc.		29,553		1,724,122
Lincoln National Corp.		1,183		55,329
Ryan Specialty Holdings, Inc. (a)		17,564		688,333
				4,326,330
Private Equity — 1.6%
Ares Management Corp. Class A		20,651		1,174,216
Blackstone, Inc.		17,128		1,562,587
				2,736,803
Real Estate — 0.2%
CBRE Group, Inc. Class A (a)		4,328		318,584
Real Estate Investment Trusts (REITS) — 0.0%
Simon Property Group, Inc.		460		43,663
				17,176,987
Industrial — 4.5%
Aerospace & Defense — 1.3%
Lockheed Martin Corp.		5,054		2,173,018
Electrical Components & Equipment — 0.2%
Generac Holdings, Inc. (a)		1,897		399,470
Electronics — 1.1%
Amphenol Corp. Class A		5,465		351,837
Arrow Electronics, Inc. (a)		13,059		1,463,783
				1,815,620
Machinery – Diversified — 0.4%
Graco, Inc.		7,223		429,118
Nordson Corp.		1,351		273,497
				702,615
Transportation — 1.5%
Expeditors International of Washington, Inc.		9,137		890,492
Landstar System, Inc.		12,129		1,763,799
				2,654,291
				7,745,014
Technology — 38.5%
Computers — 14.2%
Accenture PLC Class A		12,050		3,345,683
Apple, Inc.		142,704		19,510,491

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
EPAM Systems, Inc. (a)		423	$	124,692
Fortinet, Inc. (a)		19,216		1,087,241
Thoughtworks Holding, Inc. (a) (b)		9,531		134,482
				24,202,589
Office & Business Equipment — 0.1%
Zebra Technologies Corp. Class A (a)		886		260,440
Semiconductors — 8.2%
Advanced Micro Devices, Inc. (a)		18,023		1,378,219
Analog Devices, Inc.		10,349		1,511,885
Applied Materials, Inc.		5,399		491,201
Broadcom, Inc.		7,223		3,509,006
KLA Corp.		3,117		994,572
NVIDIA Corp.		27,111		4,109,757
QUALCOMM, Inc.		12,813		1,636,733
Texas Instruments, Inc.		2,193		336,954
				13,968,327
Software — 16.0%
Adobe, Inc. (a)		9,249		3,385,689
AppLovin Corp. (a)		9,041		311,372
Definitive Healthcare Corp. (a) (b)		12,264		281,213
Doximity, Inc. Class A (a)		4,758		165,674
Dynatrace, Inc. (a)		7,807		307,908
Fiserv, Inc. (a)		6,691		595,298
Intuit, Inc.		4,259		1,641,589
Microsoft Corp.		74,743		19,196,245
Paychex, Inc.		3,057		348,101
Playtika Holding Corp. (a)		24,635		326,167
Zoom Video Communications, Inc. Class A (a)		5,519		595,886
ZoomInfo Technologies, Inc. (a)		5,041		167,563
				27,322,705
				65,754,061
TOTAL COMMON STOCK (Cost $177,393,519)				168,962,578
TOTAL EQUITIES (Cost $177,393,519)				168,962,578
MUTUAL FUNDS — 0.2%
Diversified Financial Services — 0.2%
State Street Navigator Securities Lending Prime Portfolio (c)		285,313		285,313
TOTAL MUTUAL FUNDS (Cost $285,313)				285,313
TOTAL LONG-TERM INVESTMENTS (Cost $177,678,832)				169,247,891

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 1.1%
Repurchase Agreement — 1.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (d)	$	1,804,341	$	1,804,341
TOTAL SHORT-TERM INVESTMENTS (Cost $1,804,341)				1,804,341
TOTAL INVESTMENTS — 100.3% (Cost $179,483,173) (e)				171,052,232
Other Assets/(Liabilities) — (0.3)%				(462,715)
NET ASSETS — 100.0%			$	170,589,517

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $1,167,057 or 0.68% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $907,777 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c) Represents investment of security lending cash collateral. (Note 2).

(d) Maturity value of $1,804,353. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $1,840,484.

(e) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.0%
COMMON STOCK — 98.0%
Basic Materials — 2.3%
Chemicals — 0.6%
NewMarket Corp.		6,237	$	1,877,088
Mining — 1.7%
Compass Minerals International, Inc.		63,287		2,239,727
Kaiser Aluminum Corp.		35,434		2,802,475
				5,042,202
				6,919,290
Communications — 1.6%
Internet — 1.6%
Bumble, Inc. Class A (a)		55,613		1,565,506
Q2 Holdings, Inc. (a)		85,255		3,288,285
				4,853,791
Consumer, Cyclical — 12.5%
Airlines — 0.7%
Spirit Airlines, Inc. (a) (b)		90,552		2,158,760
Auto Parts & Equipment — 3.7%
Allison Transmission Holdings, Inc.		60,150		2,312,768
Dorman Products, Inc. (a)		45,557		4,998,058
Visteon Corp. (a)		35,561		3,683,408
				10,994,234
Entertainment — 1.0%
Cedar Fair LP (a) (c)		63,328		2,780,732
Home Builders — 0.5%
Skyline Champion Corp. (a)		32,419		1,537,309
Lodging — 0.5%
Boyd Gaming Corp.		31,677		1,575,931
Retail — 6.1%
AutoNation, Inc. (a)		54,098		6,045,992
BJ's Wholesale Club Holdings, Inc. (a)		97,464		6,073,957
Suburban Propane Partners LP (c)		205,661		3,138,387
Texas Roadhouse, Inc.		41,959		3,071,399
				18,329,735
				37,376,701

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Consumer, Non-cyclical — 20.8%
Biotechnology — 1.4%
Avid Bioservices, Inc. (a)		155,267	$	2,369,375
Intra-Cellular Therapies, Inc. (a)		30,127		1,719,649
				4,089,024
Commercial Services — 4.3%
ASGN, Inc. (a)		54,307		4,901,207
Korn Ferry		85,760		4,975,795
Paya Holdings, Inc. (a)		224,997		1,478,230
Payoneer Global, Inc. (a)		425,817		1,669,203
				13,024,435
Food — 1.7%
The Simply Good Foods Co. (a)		134,811		5,091,812
Health Care – Products — 3.4%
AtriCure, Inc. (a)		67,325		2,750,899
BioLife Solutions, Inc. (a)		69,596		961,121
Inspire Medical Systems, Inc. (a)		26,100		4,767,687
Tandem Diabetes Care, Inc. (a)		29,527		1,747,703
				10,227,410
Health Care – Services — 7.1%
Acadia Healthcare Co., Inc. (a)		96,179		6,504,586
Addus HomeCare Corp. (a)		44,779		3,729,195
LHC Group, Inc. (a)		36,317		5,656,009
Tenet Healthcare Corp. (a)		101,062		5,311,819
				21,201,609
Household Products & Wares — 0.5%
ACCO Brands Corp.		244,108		1,594,025
Pharmaceuticals — 2.4%
BellRing Brands, Inc. (a)		160,392		3,992,157
Collegium Pharmaceutical, Inc. (a)		89,325		1,582,839
Heska Corp. (a)		16,175		1,528,699
				7,103,695
				62,332,010
Energy — 4.8%
Oil & Gas — 3.5%
Chesapeake Energy Corp. (b)		42,579		3,453,157
CNX Resources Corp. (a)		241,253		3,971,024
Helmerich & Payne, Inc.		69,829		3,006,837
				10,431,018
Oil & Gas Services — 0.8%
Nov, Inc.		147,771		2,498,807
Pipelines — 0.5%
Equitrans Midstream Corp.		247,705		1,575,404
				14,505,229

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Financial — 21.1%
Banks — 6.4%
The Bank of NT Butterfield & Son Ltd.		50,991	$	1,590,409
BankUnited, Inc.		107,900		3,838,003
Cathay General Bancorp		90,326		3,536,263
Columbia Banking System, Inc.		51,575		1,477,624
FB Financial Corp.		49,185		1,929,036
Heritage Financial Corp.		79,937		2,011,215
Silvergate Capital Corp. Class A (a)		18,359		982,757
Webster Financial Corp.		89,256		3,762,140
				19,127,447
Diversified Financial Services — 3.9%
Federated Hermes, Inc.		105,387		3,350,253
Focus Financial Partners, Inc. Class A (a)		84,953		2,893,499
Stifel Financial Corp.		98,114		5,496,346
				11,740,098
Insurance — 1.3%
Definity Financial Corp. (b)		149,300		3,858,927
Real Estate Investment Trusts (REITS) — 5.4%
DiamondRock Hospitality Co. (a)		446,332		3,664,386
Four Corners Property Trust, Inc.		186,782		4,966,533
National Storage Affiliates Trust		103,676		5,191,057
Sabra Health Care REIT, Inc.		171,543		2,396,456
				16,218,432
Savings & Loans — 4.1%
Berkshire Hills Bancorp, Inc.		90,913		2,251,915
OceanFirst Financial Corp.		107,875		2,063,649
Pacific Premier Bancorp, Inc.		112,317		3,284,149
WSFS Financial Corp.		119,250		4,780,733
				12,380,446
				63,325,350
Industrial — 16.7%
Aerospace & Defense — 1.4%
Curtiss-Wright Corp.		30,831		4,071,542
Building Materials — 2.1%
Masonite International Corp. (a)		37,119		2,851,853
Summit Materials, Inc. Class A (a)		153,291		3,570,147
				6,422,000
Electrical Components & Equipment — 0.6%
Belden, Inc.		34,678		1,847,297
Electronics — 1.3%
Atkore, Inc. (a)		45,110		3,744,581

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Engineering & Construction — 1.9%
Primoris Services Corp.		78,348	$	1,704,853
TopBuild Corp. (a)		23,727		3,966,205
				5,671,058
Environmental Controls — 1.2%
Evoqua Water Technologies Corp. (a)		105,909		3,443,102
Hand & Machine Tools — 1.0%
Regal Rexnord Corp.		25,498		2,894,533
Machinery – Construction & Mining — 1.1%
BWX Technologies, Inc.		41,973		2,312,293
Vertiv Holdings Co.		137,011		1,126,230
				3,438,523
Machinery – Diversified — 1.3%
Zurn Water Solutions Corp.		143,287		3,903,138
Metal Fabricate & Hardware — 1.0%
Valmont Industries, Inc.		13,080		2,938,160
Miscellaneous - Manufacturing — 1.1%
EnPro Industries, Inc.		41,252		3,379,776
Packaging & Containers — 0.9%
Silgan Holdings, Inc.		68,084		2,815,273
Transportation — 1.8%
CryoPort, Inc. (a)		93,990		2,911,810
Hub Group, Inc. Class A (a)		36,413		2,583,139
				5,494,949
				50,063,932
Technology — 14.2%
Computers — 3.1%
CACI International, Inc. Class A (a)		16,530		4,657,823
KBR, Inc.		95,155		4,604,551
				9,262,374
Semiconductors — 5.6%
Allegro MicroSystems, Inc. (a)		93,423		1,932,922
Ambarella, Inc. (a)		26,971		1,765,522
Azenta, Inc.		70,522		5,084,636
MACOM Technology Solutions Holdings, Inc. (a)		37,576		1,732,254
MKS Instruments, Inc.		27,113		2,782,607
Semtech Corp. (a)		64,216		3,529,953
				16,827,894
Software — 5.5%
Consensus Cloud Solutions, Inc. (a)		35,187		1,536,968
Envestnet, Inc. (a)		30,920		1,631,648
Paycor HCM, Inc. (a) (b)		159,765		4,153,890
Progress Software Corp.		41,182		1,865,545

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Sprout Social, Inc. Class A (a)		42,303	$	2,456,535
Ziff Davis, Inc. (a)		67,024		4,995,299
				16,639,885
				42,730,153
Utilities — 4.0%
Electric — 1.3%
Avista Corp.		90,741		3,948,141
Gas — 2.7%
National Fuel Gas Co.		69,086		4,563,130
Northwest Natural Holding Co.		68,437		3,634,005
				8,197,135
				12,145,276
TOTAL COMMON STOCK (Cost $279,060,642)				294,251,732
TOTAL EQUITIES (Cost $279,060,642)				294,251,732
MUTUAL FUNDS — 0.3%
Diversified Financial Services — 0.3%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		974,850		974,850
TOTAL MUTUAL FUNDS (Cost $974,850)				974,850
TOTAL LONG-TERM INVESTMENTS (Cost $280,035,492)				295,226,582
	Principal Amount
SHORT-TERM INVESTMENTS — 3.8%
Repurchase Agreement — 3.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (e)	$	11,350,831		11,350,831
TOTAL SHORT-TERM INVESTMENTS (Cost $11,350,831)				11,350,831
TOTAL INVESTMENTS — 102.1% (Cost $291,386,323) (f)				306,577,413
Other Assets/(Liabilities) — (2.1)%				(6,235,811)
NET ASSETS — 100.0%			$	300,341,602

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $10,080,922 or 3.36% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $9,482,040 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(c) Security is a Master Limited Partnership.

(d) Represents investment of security lending cash collateral. (Note 2).

(e) Maturity value of $11,350,906. Collateralized by U.S. Government Agency obligations with rates ranging from 0.750% - 2.750%, maturity date of 11/15/24, and an aggregate market value, including accrued interest, of $11,577,921.

(f) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Global Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.3%
COMMON STOCK — 99.3%
Cayman Islands — 6.3%
Farfetch Ltd. Class A (a)		91,961	$	658,441
JD.com, Inc. ADR		168,499		10,821,006
Meituan Class B Class B (a) (b)		62,200		1,571,786
StoneCo Ltd. Class A (a)		47,197		363,417
Tencent Holdings Ltd.		9,700		440,511
				13,855,161
Denmark — 3.0%
Ambu A/S Class B		29,139		284,782
Novo Nordisk A/S Class B		56,491		6,270,013
				6,554,795
France — 9.0%
Dassault Systemes SE		22,328		827,326
Kering SA		12,122		6,298,089
LVMH Moet Hennessy Louis Vuitton SE		20,480		12,638,887
				19,764,302
Germany — 1.8%
SAP SE		41,958		3,822,486
India — 4.8%
DLF Ltd.		1,709,214		6,788,262
ICICI Bank Ltd. Sponsored ADR		211,896		3,759,035
				10,547,297
Italy — 0.4%
Brunello Cucinelli SpA		19,360		877,481
Japan — 8.7%
FANUC Corp.		3,200		501,577
Keyence Corp.		16,500		5,646,788
Murata Manufacturing Co. Ltd.		108,530		5,878,038
Nidec Corp.		48,700		3,011,298
Omron Corp.		25,100		1,276,417
TDK Corp.		92,200		2,851,407
				19,165,525
Netherlands — 4.5%
Airbus SE		80,665		7,920,319
ASML Holding NV		4,069		1,963,813
				9,884,132
Sweden — 3.3%
Assa Abloy AB Class B		160,305		3,430,518

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Atlas Copco AB		400,554	$	3,748,178
				7,178,696
Switzerland — 0.8%
Lonza Group AG Registered		2,650		1,413,043
Zur Rose Group AG (a) (c)		4,328		324,864
				1,737,907
United States — 56.7%
Adobe, Inc. (a)		23,396		8,564,340
Agilent Technologies, Inc.		28,055		3,332,092
Alphabet, Inc. Class A (a)		12,107		26,384,301
Amazon.com, Inc. (a)		18,375		1,951,609
Analog Devices, Inc.		65,722		9,601,327
Avantor, Inc. (a)		131,450		4,088,095
Boston Scientific Corp. (a)		25,781		960,858
Charles River Laboratories International, Inc. (a)		4,720		1,009,938
Charter Communications, Inc. Class A (a)		1,005		470,873
Danaher Corp.		4,007		1,015,855
Datadog, Inc. Class A (a)		5,383		512,677
Dun & Bradstreet Holdings, Inc. (a)		25,117		377,508
Ecolab, Inc.		2,260		347,498
Equifax, Inc.		24,416		4,462,756
Fidelity National Information Services, Inc.		13,188		1,208,944
IDEXX Laboratories, Inc. (a)		1,599		560,817
Illumina, Inc. (a)		6,910		1,273,928
Intuit, Inc.		32,202		12,411,939
Intuitive Surgical, Inc. (a)		5,552		1,114,342
IQVIA Holdings, Inc. (a)		9,589		2,080,717
Lam Research Corp.		513		218,615
Marriott International, Inc. Class A		6,517		886,377
Marvell Technology, Inc.		60,524		2,634,610
Meta Platforms, Inc. Class A (a)		51,343		8,279,059
Microsoft Corp.		12,250		3,146,167
NVIDIA Corp.		6,387		968,205
Omnicell, Inc. (a)		8,535		970,856
Phathom Pharmaceuticals, Inc. (a) (c)		28,131		237,426
Qualtrics International Inc (a)		48,812		610,638
S&P Global, Inc.		36,182		12,195,505
Splunk, Inc. (a)		13,131		1,161,568
United Parcel Service, Inc. Class B		34,422		6,283,392
Veracyte, Inc. (a)		41,505		825,949
Visa, Inc. Class A		19,276		3,795,252
The Walt Disney Co. (a)		4,238		400,067
				124,344,100
TOTAL COMMON STOCK (Cost $145,422,550)				217,731,882
TOTAL EQUITIES (Cost $145,422,550)				217,731,882

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
MUTUAL FUNDS — 0.1%
United States — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		322,859	$	322,859
TOTAL MUTUAL FUNDS (Cost $322,859)				322,859
TOTAL LONG-TERM INVESTMENTS (Cost $145,745,409)				218,054,741
	Principal Amount
SHORT-TERM INVESTMENTS — 0.7%
Repurchase Agreement — 0.7%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (e)	$	1,464,806		1,464,806
TOTAL SHORT-TERM INVESTMENTS (Cost $1,464,806)				1,464,806
TOTAL INVESTMENTS — 100.1% (Cost $147,210,215) (f)				219,519,547
Other Assets/(Liabilities) — (0.1)%				(139,844)
NET ASSETS — 100.0%			$	219,379,703

Abbreviation Legend

ADR American Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $1,571,786 or 0.72% of net assets.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $551,772 or 0.25% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $251,181 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(d) Represents investment of security lending cash collateral. (Note 2).

(e) Maturity value of $1,464,816. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $1,494,164.

(f) See Note 3 for aggregate cost for federal tax purposes.

MassMutual International Equity Fund —  Portfolio of Investments

	Number of Shares		Value
EQUITIES — 95.4%
COMMON STOCK — 95.4%
Australia — 0.9%
BHP Group Ltd. Sponsored ADR (a)		2,000	$	112,360
BHP Group Ltd.		3,900		112,330
Lendlease Corp Ltd.		27,700		174,286
Macquarie Group Ltd.		2,700		306,865
Santos Ltd.		71,700		365,522
Woodside Energy Group Ltd.		3,326		72,836
				1,144,199
Austria — 0.0%
ams-OSRAM AG (b)		6,466		58,326
Belgium — 0.7%
Anheuser-Busch InBev SA		7,800		420,752
Groupe Bruxelles Lambert SA		2,000		167,082
KBC Group NV		3,900		219,080
				806,914
Canada — 6.3%
The Bank of Nova Scotia (a)		29,635		1,753,880
Canadian National Railway Co.		26,421		2,971,952
Intact Financial Corp. (a)		21,121		2,979,124
TFI International, Inc.		1,800		144,495
				7,849,451
Cayman Islands — 0.7%
CK Asset Holdings Ltd.		57,000		403,748
CK Hutchison Holdings Ltd.		67,700		460,414
				864,162
Finland — 1.6%
Kone OYJ Class B		35,254		1,685,740
Nokia OYJ		68,300		318,154
				2,003,894
France — 11.2%
Amundi SA (a) (c)		3,292		182,232
AXA SA		74,704		1,697,636
Capgemini SE		13,609		2,353,391
Cie de Saint-Gobain		3,200		139,003
Dassault Aviation SA		1,000		156,109
Engie SA		45,500		528,092
LVMH Moet Hennessy Louis Vuitton SE		1,644		1,014,567
Rexel SA (b)		7,800		120,102

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Sanofi		5,000	$	505,628
Schneider Electric SE		16,174		1,916,105
TotalEnergies SE		37,399		1,971,375
Ubisoft Entertainment SA (b)		3,200		141,349
Veolia Environnement SA		14,192		351,109
Vinci SA		31,788		2,855,849
				13,932,547
Germany — 4.0%
Allianz SE Registered		760		145,079
BASF SE		7,000		304,613
Bayer AG Registered		2,100		124,768
Deutsche Boerse AG		1,936		323,804
Deutsche Post AG Registered		9,900		370,907
Fresenius SE & Co. KGaA		10,900		330,273
HeidelbergCement AG		6,800		326,659
Infineon Technologies AG		10,500		254,050
Merck KGaA		10,356		1,747,874
SAP SE		4,200		382,631
Siemens AG Registered		3,460		352,151
Siemens Energy AG (b)		12,834		188,214
Talanx AG (b)		3,100		117,958
				4,968,981
Hong Kong — 2.9%
AIA Group Ltd.		327,714		3,599,660
Ireland — 3.2%
AIB Group PLC		93,300		212,793
DCC PLC		4,600		287,430
Linde PLC (b)		10,118		2,904,738
Linde PLC		670		192,645
Ryanair Holdings PLC Sponsored ADR (b)		300		20,175
Smurfit Kappa Group PLC		10,000		337,446
				3,955,227
Israel — 0.2%
Check Point Software Technologies Ltd. (b)		2,190		266,698
Italy — 0.1%
Prysmian SpA		3,300		91,070
Japan — 14.8%
Astellas Pharma, Inc.		222,080		3,460,151
Chugai Pharmaceutical Co. Ltd. (a)		34,301		877,808
Denka Co. Ltd.		7,800		188,984
FANUC Corp.		1,500		235,114
Fujitsu Ltd.		1,900		237,827
Hitachi Ltd.		7,600		360,097
Kao Corp.		58,356		2,355,053
KDDI Corp.		103,834		3,283,398
Kirin Holdings Co. Ltd.		104,365		1,644,817
Kyocera Corp.		6,200		331,864
Nintendo Co. Ltd.		400		172,877
Olympus Corp.		12,500		251,385
ORIX Corp.		23,500		394,499
Rakuten Group, Inc. (a)		42,500		191,901

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
SBI Holdings, Inc.		11,900	$	233,046
Sega Sammy Holdings, Inc.		7,900		126,895
Seven & i Holdings Co. Ltd.		11,900		461,298
Shiseido Co. Ltd. (a)		37,622		1,511,540
Sony Group Corp.		8,400		686,480
Square Enix Holdings Co. Ltd.		4,600		203,889
Sumitomo Mitsui Financial Group, Inc.		14,000		415,786
Toshiba Corp.		6,900		280,634
Toyota Industries Corp.		7,100		440,094
				18,345,437
Luxembourg — 0.2%
ArcelorMittal SA		10,100		229,336
Netherlands — 4.9%
AerCap Holdings NV (b)		5,595		229,059
ASML Holding NV		390		188,225
CNH Industrial NV		20,400		236,770
EXOR NV		1,300		81,591
Heineken Holding NV		4,300		314,517
Heineken NV		34,197		3,131,818
Koninklijke Philips NV		78,762		1,708,935
NXP Semiconductor NV		1,200		177,636
				6,068,551
Norway — 0.3%
DNB Bank ASA		11,100		199,769
Mowi ASA		9,400		214,458
				414,227
Republic of Korea — 0.3%
Samsung Electronics Co. Ltd.		8,400		367,959
Singapore — 0.3%
DBS Group Holdings, Ltd.		16,200		346,751
Spain — 3.5%
Iberdrola SA		199,131		2,066,344
Industria de Diseno Textil SA		98,499		2,230,750
				4,297,094
Sweden — 2.5%
Assa Abloy AB Class B		103,073		2,205,756
Essity AB Class B		9,300		242,812
Husqvarna AB Class B		6,600		48,569
Investor AB Class B		10,600		174,454
Lundin Energy MergerCo AB (a) (d) (e)		4,641		189,304
Volvo AB Class B		13,800		213,909
				3,074,804
Switzerland — 9.8%
ABB Ltd. Registered		12,900		344,766
Alcon, Inc.		1,000		69,854
Cie Financiere Richemont SA Registered		2,500		266,240
Nestle SA Registered		29,370		3,445,723

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Novartis AG Registered		44,282	$	3,745,898
Roche Holding AG		11,316		3,777,594
UBS Group AG Registered		32,900		531,077
				12,181,152
United Kingdom — 27.0%
Ashtead Group PLC		4,700		197,167
AstraZeneca PLC		22,863		2,996,923
Aviva PLC		31,084		151,860
BAE Systems PLC		327,343		3,310,793
Barratt Developments PLC		21,100		117,614
BP PLC		59,400		279,767
Bunzl PLC		5,800		192,072
Burberry Group PLC		3,800		76,019
Compass Group PLC		106,211		2,174,442
Diageo PLC		60,443		2,607,621
Entain PLC (b)		5,900		89,528
Experian PLC		73,650		2,159,055
Glencore PLC		40,900		221,632
GSK PLC		17,400		374,142
Imperial Brands PLC		5,300		118,460
Inchcape PLC		16,056		136,093
Informa PLC (b)		33,000		212,668
Kingfisher PLC		93,700		278,677
Liberty Global PLC Class C (b)		13,900		307,051
Lloyds Banking Group PLC		695,000		358,490
Melrose Industries PLC		132,621		242,159
National Grid PLC		186,179		2,385,934
Persimmon PLC		10,200		231,539
Prudential PLC		121,498		1,511,312
Reckitt Benckiser Group PLC		49,912		3,748,942
Shell PLC		95,476		2,491,492
Smith & Nephew PLC		222,055		3,104,578
Tesco PLC		104,400		324,720
Unilever PLC		10,300		468,796
Unilever PLC		57,062		2,597,858
				33,467,404
TOTAL COMMON STOCK (Cost $126,953,586)				118,333,844
TOTAL EQUITIES (Cost $126,953,586)				118,333,844
MUTUAL FUNDS — 0.0%
United States — 0.0%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		3,318		3,318
TOTAL MUTUAL FUNDS (Cost $3,318)				3,318
TOTAL LONG-TERM INVESTMENTS (Cost $126,956,904)				118,337,162

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 3.9%
Repurchase Agreement — 3.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (g)	$	4,846,705	$	4,846,705
TOTAL SHORT-TERM INVESTMENTS (Cost $4,846,705)				4,846,705
TOTAL INVESTMENTS — 99.3% (Cost $131,803,609) (h)				123,183,867
Other Assets/(Liabilities) — 0.7%				858,165
NET ASSETS — 100.0%			$	124,042,032

Abbreviation Legend

ADR American Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $2,918,380 or 2.35% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $3,207,365 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(b) Non-income producing security.

(c) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $182,232 or 0.15% of net assets.

(d) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2022, these securities amounted to a value of $189,304 or 0.15% of net assets.

(e) Investment was valued using significant unobservable inputs.

(f) Represents investment of security lending cash collateral. (Note 2).

(g) Maturity value of $4,846,738. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $4,943,686.

(h) See Note 3 for aggregate cost for federal tax purposes.

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments

June 30, 2022 (Unaudited)

	Number of Shares		Value
EQUITIES — 94.3%
COMMON STOCK — 93.1%
Bermuda — 0.3%
Credicorp Ltd.		3,311	$	397,022
Brazil — 3.6%
Ambev SA		560,863		1,436,063
Americanas SA		219,741		563,896
Lojas Renner SA		153,133		661,871
Vale SA ADR Sponsored ADR		99,802		1,460,103
WEG SA		41,637		210,435
				4,332,368
Cayman Islands — 24.1%
Alibaba Group Holding Ltd. (a)		206,600		2,947,089
BeiGene Ltd. ADR (a)		9,017		1,459,401
Brii Biosciences Ltd. (a)		170,000		183,500
Grab Holdings Ltd. Class A (a)		91,801		232,256
Huazhu Group Ltd.		8,000		31,052
Huazhu Group Ltd. ADR		111,760		4,258,056
JD.com, Inc. ADR		2,831		181,807
Meituan Class B Class B (a) (b)		117,500		2,969,211
NetEase, Inc. ADR		46,935		4,381,852
New Horizon Health Ltd. (a) (b)		51,500		158,249
NU Holdings Ltd/Cayman Islands Class A (a)		118,316		442,502
Pagseguro Digital Ltd. Class A (a)		35,289		361,359
Silergy Corp.		7,000		558,208
Sunny Optical Technology Group Co. Ltd.		41,900		681,811
Tencent Holdings Ltd.		49,890		2,265,679
Wuxi Biologics Cayman, Inc. (a) (b)		304,000		2,800,312
Zai Lab Ltd. ADR (a)		29,224		1,013,488
ZTO Express Cayman, Inc.		9,970		270,122
ZTO Express Cayman, Inc. ADR		135,773		3,726,969
				28,922,923
Chile — 0.1%
Banco Santander Chile		2,558,202		103,287
China — 0.0%
Microtech Medical Co., Ltd. (a) (c)		27,000		32,409
MicroTech Medical Hangzhou Co. Ltd. Class H (a) (b)		15,300		19,331
				51,740
Cyprus — 0.0%
TCS Group Holding, PLC GDR Registered (a) (b) (c) (d)		10,040		—
Egypt — 0.3%
Commercial International Bank Egypt SAE		174,357		345,774

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
France — 5.1%
Kering SA		3,896	$	2,024,200
L'Oreal SA		200		69,102
Pernod Ricard SA		21,612		4,003,314
				6,096,616
Hong Kong — 4.1%
AIA Group Ltd.		448,600		4,927,490
India — 19.3%
Housing Development Finance Corp. Ltd.		287,591		7,866,362
Infosys Ltd.		139,113		2,584,577
Kotak Mahindra Bank Ltd.		281,287		5,920,428
Oberoi Realty Ltd. (a)		72,906		674,980
Tata Consultancy Services Ltd.		125,342		5,190,636
Zee Entertainment Enterprises Ltd.		353,109		957,798
				23,194,781
Indonesia — 0.8%
Bank Central Asia Tbk PT		1,893,000		922,413
Italy — 1.4%
PRADA SpA		294,700		1,653,645
Luxembourg — 0.3%
InPost SA (a) (e)		66,064		383,668
Mexico — 8.7%
America Movil SAB de CV Class L Sponsored ADR		63,194		1,291,054
Fomento Economico Mexicano SAB de CV		268,324		1,811,065
Grupo Mexico SAB de CV Series B		1,145,496		4,774,063
Wal-Mart de Mexico SAB de CV		766,909		2,639,056
				10,515,238
Netherlands — 0.0%
Yandex N.V. (a) (c) (d)		83,348		—
Philippines — 2.1%
Ayala Land, Inc.		1,689,600		782,487
SM Investments Corp.		106,190		1,510,620
SM Prime Holdings, Inc.		425,857		283,049
				2,576,156
Republic of Korea — 6.3%
LG Chem Ltd.		4,478		1,782,006
NAVER Corp.		6,260		1,161,407
Samsung Biologics Co. Ltd. (a) (b)		4,100		2,496,315
Samsung Electronics Co. Ltd.		47,388		2,075,815
				7,515,543
Russia — 0.0%
Novatek PJSC GDR Registered (b) (c) (d)		28,473		—
Novatek PJSC Sponsored GDR Registered (b) (c) (d)		172		—
Polyus PJSC (a) (c) (d)		4,927		—
Polyus PJSC GDR (c) (d)		454		—

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Polyus PJSC GDR (b) (c) (d)		4,390	$	—
Sberbank of Russia PJSC (a) (c) (d)		18,062		—
				—
South Africa — 0.9%
FirstRand Ltd.		285,289		1,096,229
Switzerland — 1.5%
Cie Financiere Richemont SA Registered		16,645		1,772,627
Taiwan — 8.5%
MediaTek, Inc.		105,000		2,286,818
Taiwan Semiconductor Manufacturing Co. Ltd.		497,000		7,915,533
				10,202,351
United Kingdom — 0.5%
Prudential PLC		47,607		579,178
United States — 5.2%
Coupang, Inc. (a)		24,116		307,479
Yum China Holdings, Inc.		121,754		5,905,069
				6,212,548
TOTAL COMMON STOCK (Cost $134,828,681)				111,801,597
PREFERRED STOCK — 1.2%
Brazil — 1.2%
Banco Bradesco SA 3.340%		441,014		1,449,415
TOTAL PREFERRED STOCK (Cost $1,607,078)				1,449,415
TOTAL EQUITIES (Cost $136,435,759)				113,251,012
MUTUAL FUNDS — 0.1%
United States — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		100,760		100,760
TOTAL MUTUAL FUNDS (Cost $100,760)				100,760
WARRANTS — 0.0%
Switzerland — 0.0%
Cie Financiere Richemont SA, Expires 11/22/23, Strike 67.00 (a)		53,937		29,380
TOTAL WARRANTS (Cost $0)				29,380
TOTAL LONG-TERM INVESTMENTS (Cost $136,536,519)				113,381,152

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 5.3%
Repurchase Agreement — 5.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/22, 0.240%, due 7/01/22 (g)	$	6,359,945	$	6,359,945
TOTAL SHORT-TERM INVESTMENTS (Cost $6,359,945)				6,359,945
TOTAL INVESTMENTS — 99.7% (Cost $142,896,464) (h)				119,741,097
Other Assets/(Liabilities) — 0.3%				354,211
NET ASSETS — 100.0%			$	120,095,308

Abbreviation Legend

ADR American Depositary Receipt

GDR Global Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2022, the aggregate market value of these securities amounted to $8,443,418 or 7.03% of net assets.

(c) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2022, these securities amounted to a value of $32,409 or 0.03% of net assets.

(d) Investment was valued using significant unobservable inputs.

(e) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2022, was $95,768 or 0.08% of net assets. Total securities on loan may be less than the amounts identified in the Portfolio of Investments. The Fund received $0 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(f) Represents investment of security lending cash collateral. (Note 2).

(g) Maturity value of $6,359,988. Collateralized by U.S. Government Agency obligations with a rate of 3.000%, maturity date of 6/30/24, and an aggregate market value, including accrued interest, of $6,487,195.

(h) See Note 3 for aggregate cost for federal tax purposes.

Notes to Portfolio of Investments (Unaudited)

1. The Funds 

MassMutual Premier Funds (the “Trust”) is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. The Trust is organized under the laws of the Commonwealth of Massachusetts as a Massachusetts business trust pursuant to an Agreement and Declaration of Trust dated August 1, 1994, as amended and restated as of November 21, 2011, as it may be further amended from time to time. The Trust consists of 14 series, including the following 13 series listed below (each individually referred to as a “Fund” or collectively as the “Funds”):

MassMutual Short-Duration Bond Fund (“Short-Duration Bond Fund”)

MassMutual Inflation-Protected and Income Fund (“Inflation-Protected and Income Fund”)

MassMutual Core Bond Fund (“Core Bond Fund”)

MassMutual Diversified Bond Fund (“Diversified Bond Fund”)

MassMutual High Yield Fund (“High Yield Fund”)

MassMutual Balanced Fund (“Balanced Fund”)

MassMutual Disciplined Value Fund (“Disciplined Value Fund”)

MassMutual Main Street Fund (“Main Street Fund”)

MassMutual Disciplined Growth Fund (“Disciplined Growth Fund”)

MassMutual Small Cap Opportunities Fund (“Small Cap Opportunities Fund”)

MassMutual Global Fund (“Global Fund”)

MassMutual International Equity Fund (“International Equity Fund”)

MassMutual Strategic Emerging Markets Fund (“Strategic Emerging Markets Fund”)

Notes to Portfolio of Investments (Unaudited) (Continued)

2. Significant Accounting Policies

Each Fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification Topic 946, Financial Services – Investment Companies.

Investment Valuation

The net asset value of each Fund’s shares is determined once daily as of the close of regular trading on the New York Stock Exchange (“NYSE”), on each day the NYSE is open for trading (a “business day”). The NYSE normally closes at 4:00 p.m. Eastern Time, but may close earlier on some days. If the NYSE is scheduled to close early, the business day will be considered to end as of the time of the NYSE’s scheduled close. A Fund will not treat an intraday disruption in NYSE trading or other event that causes an unscheduled closing of the NYSE as a close of business of the NYSE for these purposes and will instead fair value securities in accordance with procedures approved annually by the Board of Trustees (“Trustees”), and under the general oversight of the Trustees. On holidays and other days when the NYSE is closed, each Fund’s net asset value generally is not calculated and the Funds do not anticipate accepting buy or sell orders. However, the value of each Fund’s assets may still be affected on such days to the extent that a Fund holds foreign securities that trade on days that foreign securities markets are open.

Equity securities and derivative contracts that are actively traded on a national securities exchange or contract market are valued on the basis of information furnished by a pricing service, which provides the last reported sale price, or, in the case of futures contracts, the settlement price, for securities or derivatives listed on the exchange or contract market or the official closing price on the NASDAQ National Market System (“NASDAQ System”), or in the case of over-the-counter (“OTC”) securities for which an official closing price is unavailable or not reported on the NASDAQ System, the last reported bid price. Portfolio securities traded on more than one national securities exchange are valued at the last price at the close of the exchange representing the principal market for such securities. Debt securities are valued on the basis of valuations furnished by a pricing service, which generally determines valuations taking into account factors such as institutional-size trading in similar securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data. Shares of other open-end mutual funds are valued at their closing net asset values as reported on each business day.

Investments for which market quotations are readily available are marked to market daily based on those quotations. Market quotations may be provided by third-party vendors or market makers, and may be determined on the basis of a variety of factors, such as broker quotations, financial modeling, and other market data, such as market indexes and yield curves, counterparty information, and foreign exchange rates. U.S. Government and agency securities may be valued on the basis of market quotations or using a model that may incorporate market observable data such as reported sales of similar securities, broker quotes, yields, bids, offers, quoted market prices, and reference data. The fair values of OTC derivative contracts, including forward, swap, and option contracts related to interest rates, foreign currencies, credit standing of reference entities, equity prices, or commodity prices, may be based on market quotations or may be modeled using a series of techniques, including simulation models, depending on the contract and the terms of the transaction. The fair values of asset-backed securities and mortgage-backed securities are estimated based on models that consider the estimated cash flows of each debt tranche of the issuer, established benchmark yield, and estimated tranche-specific spread to the benchmark yield based on the unique attributes of the tranche, including, but not limited to, prepayment speed assumptions and attributes of the collateral.

Notes to Portfolio of Investments (Unaudited) (Continued)

Investments for which market quotations are not available or for which a pricing service or vendor does not provide a value, or for which such market quotations or values are considered by the investment adviser or subadviser to be unreliable (including, for example, certain foreign securities, thinly-traded securities, certain restricted securities, certain initial public offerings, or securities whose values may have been affected by a significant event) are stated at fair valuations determined in good faith by the Funds’ Valuation Committee¹ in accordance with procedures approved annually by the Trustees, and under the general oversight of the Trustees. The Funds’ Valuation Committee employs various methods to determine fair valuations including a regular review of significant inputs and assumptions and review of any related market activity. The Funds’ Valuation Committee reports to the Trustees at its regularly scheduled meetings. It is possible that fair value prices will be used by the Funds to a significant extent. The value determined for an investment using the Funds’ fair value procedures may differ from recent market prices for the investment and may be significantly different from the value realized upon the sale of such investment.

The Funds may invest in securities that are traded principally in foreign markets and that trade on weekends and other days when the Funds do not price their shares. As a result, the values of the Funds’ portfolio securities may change on days when the prices of the Funds’ shares are not calculated. The prices of the Funds’ shares will reflect any such changes when the prices of the Funds’ shares are next calculated, which is the next business day.  The Funds may use fair value pricing more frequently for securities primarily traded in foreign markets because, among other things, most foreign markets close well before the Funds value their securities. The earlier close of these foreign markets gives rise to the possibility that significant events, including broad market moves, may have occurred in the interim. The Funds’ investments may be priced based on fair values provided by a third-party vendor, based on certain factors and methodologies applied by such vendor, in the event that there is movement in the U.S. market, between the close of the foreign market and the time the Funds calculate their net asset values. All assets and liabilities expressed in foreign currencies are converted into U.S. dollars at the mean between the buying and selling rates of such currencies against the U.S. dollar at the end of each business day.

1 The voting members of the Valuation Committee consist of the President, Treasurer, Assistant Treasurers, Vice Presidents (except for the CCO, Secretary, and Assistant Secretaries) of the Trust, as well as such other members as the Trustees may from time to time designate. The non-voting members of the Valuation Committee consist of the CCO, Secretary, and Assistant Secretaries. The Valuation Committee reviews and determines the fair valuation of portfolio securities and the Funds’ pricing procedures in general.

Notes to Portfolio of Investments (Unaudited) (Continued)

For investments in equity or debt issued by privately held companies or funds (“Private Company” or collectively, the “Private Companies”) and any other investments fair valued using significant unobservable inputs, as described below, the fair valuation approaches used by third party service providers and/or the Funds’ subadvisers utilize one or a combination of, but not limited to, the following inputs:

Market approach: (i) recent market transactions, including subsequent rounds of financing, in the underlying investment or comparable issuers; (ii) recapitalizations and other transactions across the capital structure; and (iii) market multiples of comparable issuers.

Income approach: (i) future cash flows discounted to present value and adjusted as appropriate for liquidity, credit, and/or market risks; (ii) quoted prices for similar investments or assets in active markets; and (iii) other risk factors, such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks, recovery rates, liquidation amounts, and/or default rates.

Cost approach: (i) audited or unaudited financial statements, investor communications, and financial or operational metrics issued by the Private Company; (ii) changes in the valuation of relevant indexes or publicly traded companies comparable to the Private Company; (iii) relevant news and other public sources; and (iv) known secondary market transactions in the Private Company’s interests and merger or acquisition activity in companies comparable to the Private Company.

Investments in series of preferred stock issued by Private Companies are typically valued utilizing Market approach in determining the enterprise value of the company. Such investments often contain rights and preferences that differ from other series of preferred and common stock of the same issuer. Valuation techniques such as the current value method (“CVM”), an option pricing model (“OPM”), a probability weighted expected return model (“PWERM”), or a hybrid of those techniques are used in allocating enterprise value of the company, as deemed appropriate under the circumstances. The CVM allocates value among the various parts of a company’s capital structure assuming that the value of convertible preferred stock is represented by the most favorable claim the preferred stockholders have on the enterprise value as of the valuation date. The use of OPM and PWERM techniques involve a determination of the exit scenarios of the investment in order to appropriately allocate the enterprise value of the company among the various parts of its capital structure.

The Private Companies are not subject to the public company disclosure, timing, and reporting standards as other investments held by a Fund. Typically, the most recently available information for a Private Company is as of a date that is earlier than the date a Fund is calculating its net asset value. This factor may result in a difference between the value of the investment and the price a Fund could receive upon the sale of the investment.

Notes to Portfolio of Investments (Unaudited) (Continued)

Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. A three-tier hierarchy is utilized to maximize the use of observable market data inputs and minimize the use of unobservable inputs and to establish classification of fair value measurements for disclosure purposes. Inputs refer broadly to the assumptions that market participants would use in pricing the asset or liability, including assumptions about risk, for example, the risk inherent in a particular valuation technique used to measure fair value (such as a pricing model) and/or the risk inherent in the inputs to the valuation technique. Inputs may be observable or unobservable. Observable inputs are inputs that reflect the assumptions market participants would use in pricing the asset or liability and are developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs are inputs that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. The three-tier hierarchy of inputs is summarized in the three broad Levels listed below. The inputs or methodology used for valuing investments are not necessarily an indication of the risk associated with investing in those investments and the determination of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to each security.

Level 1 – quoted prices (unadjusted) in active markets for identical investments that the Funds can access at the measurement date

Level 2 – other significant observable inputs (including quoted prices for similar investments, interest rates, prepayment speeds, credit risk, etc.)

Level 3 – significant unobservable inputs, to the extent observable inputs are not available (including the Funds’ own assumptions in determining the fair value of investments)

The availability of observable inputs can vary from security to security and is affected by a wide variety of factors, including, for example, the type of security, whether the security is new and not yet established in the marketplace, the liquidity of markets, and other characteristics particular to the security. To the extent that valuation is based on models or inputs that are less observable or unobservable in the market, the determination of fair value requires more judgment. Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3.

Changes in valuation techniques may result in transfers in or out of an investment’s assigned Level within the hierarchy. In addition, in periods of market dislocation, the observability of prices and inputs may be reduced for many instruments. This condition, as well as changes related to liquidity of investments, could cause a security to be reclassified between Levels.

Notes to Portfolio of Investments (Unaudited) (Continued)

In certain cases, the inputs used to measure fair value may fall into different Levels of the fair value hierarchy. In such cases, for disclosure purposes, the Level in the fair value hierarchy within which the fair value measurement falls is determined based on the lowest Level input that is significant to the overall fair value measurement.

The Disciplined Value Fund, Disciplined Growth Fund, and Small Cap Opportunities Fund characterized all long-term investments at Level 1, and all short-term investments at Level 2, as of June 30, 2022. For each Fund noted in the preceding sentence, the level classification by major category of investments is the same as the category presentation in the Portfolio of Investments. 

Notes to Portfolio of Investments (Unaudited) (Continued)

The following is the aggregate value by input level, as of June 30, 2022, for the remaining Funds’ investments:

Short-Duration Bond Fund
Asset Investments	Level 1		Level 2			Level 3		Total
Corporate Debt	$	—	$	386,070,600		$	—	$	386,070,600
Non-U.S. Government Agency Obligations		—		338,473,529			—		338,473,529
U.S. Government Agency Obligations and Instrumentalities		—		118,501			—		118,501
Mutual Funds		3,072,928		—			—		3,072,928
Short-Term Investments		—		6,731,203			—		6,731,203
Total Investments	$	3,072,928	$	731,393,833		$	—	$	734,466,761
Asset Derivatives
Futures Contracts	$	2,242,040	$	—		$	—	$	2,242,040
Liability Derivatives
Swap Agreements	$	—	$	(22,916,811	)	$	—	$	(22,916,811	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Inflation-Protected and Income Fund
Asset Investments	Level 1			Level 2			Level 3		Total
Non-U.S. Government Agency Obligations	$	—		$	169,014,586		$	—	$	169,014,586
U.S. Government Agency Obligations and Instrumentalities		—			26,805,611			—		26,805,611
U.S. Treasury Obligations		—			80,683,098			—		80,683,098
Short-Term Investments		—			34,109,541			—		34,109,541
Total Investments	$	—		$	310,612,836		$	—	$	310,612,836
Asset Derivatives
Futures Contracts	$	1,941		$	—		$	—	$	1,941
Swap Agreements		—			49,103			—		49,103
Total	$	1,941		$	49,103		$	—	$	51,044
Liability Derivatives
Futures Contracts	$	(510,813	)	$	—		$	—	$	(510,813	)
Swap Agreements		—			(11,648,245	)		—		(11,648,245	)
Total	$	(510,813	)	$	(11,648,245	)	$	—	$	(12,159,058	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Core Bond Fund
Asset Investments	Level 1			Level 2		Level 3		Total
Corporate Debt	$	—		$	314,943,528	$	—	$	314,943,528
Municipal Obligations		—			2,276,850		—		2,276,850
Non-U.S. Government Agency Obligations		—			235,793,754		—		235,793,754
Sovereign Debt Obligations		—			4,149,965		—		4,149,965
U.S. Government Agency Obligations and Instrumentalities		—			216,620,259		—		216,620,259
U.S. Treasury Obligations		—			45,179,836		—		45,179,836
Mutual Funds		1,500,170			—		—		1,500,170
Short-Term Investments		—			135,888,688		—		135,888,688
Total Investments	$	1,500,170		$	954,852,880	$	—	$	956,353,050
Asset Derivatives
Futures Contracts	$	158,179		$	—	$	—	$	158,179
Liability Derivatives
Futures Contracts	$	(1,285,064	)	$	—	$	—	$	(1,285,064	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Diversified Bond Fund
Asset Investments	Level 1			Level 2			Level 3		Total
Preferred Stock	$	1,166,465		$	—		$	—	$	1,166,465
Corporate Debt		—			81,002,044			—		81,002,044
Municipal Obligations		—			395,974			—		395,974
Non-U.S. Government Agency Obligations		—			54,006,981			—		54,006,981
Sovereign Debt Obligations		—			680,053			—		680,053
U.S. Government Agency Obligations and Instrumentalities		—			27,671,310			—		27,671,310
U.S. Treasury Obligations		—			1,464,400			—		1,464,400
Purchased Options		—			89,260			—		89,260
Warrants		—			—			4,228		4,228
Mutual Funds		1,639,645			—			—		1,639,645
Short-Term Investments		—			15,767,846			—		15,767,846
Total Investments	$	2,806,110		$	181,077,868		$	4,228	$	183,888,206
Asset Derivatives
Forward Contracts	$	—		$	105,266		$	—	$	105,266
Futures Contracts		26,377			—			—		26,377
Total	$	26,377		$	105,266		$	—	$	131,643
Liability Derivatives
Forward Contracts	$	—		$	(130,866	)	$	—	$	(130,866	)
Futures Contracts		(412,135	)		—			—		(412,135	)
Written Options		—			(16	)		—		(16	)
Total	$	(412,135	)	$	(130,882	)	$	—	$	(543,017	)

Notes to Portfolio of Investments (Unaudited) (Continued)

High Yield Fund
Asset Investments	Level 1		Level 2		Level 3			Total
Common Stock	$	4,402,447	$	—	$	—	+	$	4,402,447
Bank Loans		—		13,169,225		—			13,169,225
Corporate Debt		—		396,382,380		—			396,382,380
Mutual Funds		14,981,620		—		—			14,981,620
Short-Term Investments		—		22,849,000		—			22,849,000
Total Investments	$	19,384,067	$	432,400,605	$	—		$	451,784,672

Notes to Portfolio of Investments (Unaudited) (Continued)

Balanced Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	79,589,541	$	—	$	—	$	79,589,541
Corporate Debt		—		15,541,281		—		15,541,281
Non-U.S. Government Agency Obligations		—		4,462,864		—		4,462,864
U.S. Government Agency Obligations and Instrumentalities		—		11,716,561		—		11,716,561
U.S. Treasury Obligations		—		20,030,718		—		20,030,718
Mutual Funds		2,769,480		—		—		2,769,480
Short-Term Investments		—		2,858,601		—		2,858,601
Total Investments	$	82,359,021	$	54,610,025	$	—	$	136,969,046
Asset Derivatives
Futures Contracts	$	69,577	$	—	$	—	$	69,577

Notes to Portfolio of Investments (Unaudited) (Continued)

Main Street Fund
Asset Investments	Level 1		Level 2			Level 3		Total
Common Stock	$	90,449,355	$	739,698	*	$	—	$	91,189,053
Short-Term Investments		—		973,633			—		973,633
Total Investments	$	90,449,355	$	1,713,331		$	—	$	92,162,686

Notes to Portfolio of Investments (Unaudited) (Continued)

Global Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Cayman Islands	$	11,842,864	$	2,012,297	$	—	$	13,855,161
Denmark		—		6,554,795		—		6,554,795
France		—		19,764,302		—		19,764,302
Germany		—		3,822,486		—		3,822,486
India		3,759,035		6,788,262		—		10,547,297
Italy		—		877,481		—		877,481
Japan		—		19,165,525		—		19,165,525
Netherlands		—		9,884,132		—		9,884,132
Sweden		—		7,178,696		—		7,178,696
Switzerland		—		1,737,907		—		1,737,907
United States		124,344,100		—		—		124,344,100
Mutual Funds		322,859		—		—		322,859
Short-Term Investments		—		1,464,806		—		1,464,806
Total Investments	$	140,268,858	$	79,250,689	$	—	$	219,519,547

Notes to Portfolio of Investments (Unaudited) (Continued)

International Equity Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Australia	$	112,360	$	1,031,839	$	—	$	1,144,199
Austria		—		58,326		—		58,326
Belgium		—		806,914		—		806,914
Canada		7,849,451		—		—		7,849,451
Cayman Islands		—		864,162		—		864,162
Finland		—		2,003,894		—		2,003,894
France		—		13,932,547		—		13,932,547
Germany		—		4,968,981		—		4,968,981
Hong Kong		—		3,599,660		—		3,599,660
Ireland		212,820		3,742,407		—		3,955,227
Israel		266,698		—		—		266,698
Italy		—		91,070		—		91,070
Japan		—		18,345,437		—		18,345,437
Luxembourg		—		229,336		—		229,336
Netherlands		406,695		5,661,856		—		6,068,551
Norway		—		414,227		—		414,227
Republic of Korea		—		367,959		—		367,959
Singapore		—		346,751		—		346,751
Spain		—		4,297,094		—		4,297,094
Sweden		—		2,885,500		189,304		3,074,804
Switzerland		—		12,181,152		—		12,181,152
United Kingdom		307,051		33,160,353		—		33,467,404
Mutual Funds		3,318		—		—		3,318
Short-Term Investments		—		4,846,705		—		4,846,705
Total Investments	$	9,158,393	$	113,836,170	$	189,304	$	123,183,867

Notes to Portfolio of Investments (Unaudited) (Continued)

Strategic Emerging Markets Fund
Asset Investments	Level 1		Level 2		Level 3			Total
Common Stock*
Bermuda	$	397,022	$	—	$	—		$	397,022
Brazil		4,332,368		—		—			4,332,368
Cayman Islands		16,057,690		12,865,233		—			28,922,923
Chile		103,287		—		—			103,287
China		—		51,740		—			51,740
Cyprus		—		—		—	+		—
Egypt		—		345,774		—			345,774
France		—		6,096,616		—			6,096,616
Hong Kong		—		4,927,490		—			4,927,490
India		—		23,194,781		—			23,194,781
Indonesia		—		922,413		—			922,413
Italy		—		1,653,645		—			1,653,645
Luxembourg		—		383,668		—			383,668
Mexico		10,515,238		—		—			10,515,238
Netherlands		—		—		—	+		—
Philippines		—		2,576,156		—			2,576,156
Republic of Korea		—		7,515,543		—			7,515,543
Russia		—		—		—	+		—
South Africa		—		1,096,229		—			1,096,229
Switzerland		—		1,772,627		—			1,772,627
Taiwan		—		10,202,351		—			10,202,351
United Kingdom		—		579,178		—			579,178
United States		6,212,548		—		—			6,212,548
Preferred Stock
Brazil		1,449,415		—		—			1,449,415
Mutual Funds		100,760		—		—			100,760
Warrants		29,380		—		—			29,380
Short-Term Investments		—		6,359,945		—			6,359,945
Total Investments	$	39,197,708	$	80,543,389	$	—		$	119,741,097

* Includes foreign equity securities whose values were adjusted to reflect market trading of comparable securities or other correlated instruments after the close of trading in their respective foreign markets, as applicable.

+ Represents a security at $0 value as of June 30, 2022.

Derivative Instruments

Derivatives are financial instruments whose values are based on the values of one or more underlying indicators, such as a security, asset, currency, interest rate, or index. Derivative transactions can create investment leverage and may be highly volatile. Losses from derivatives can be substantially greater than the derivatives’ original cost and can sometimes be unlimited. A Fund may not be able to close out a derivative transaction at a favorable time or price.

Notes to Portfolio of Investments (Unaudited) (Continued)

Please refer to the Funds’ most recent Annual/Semiannual reports and Prospectus(es) and Statement(s) of Additional Information which can be found on the Securities and Exchange Commission’s EDGAR database on its website at http://www.sec.gov for more information regarding the derivatives and other investments held by the Fund(s).

Securities Lending

Each Fund may lend its securities; however, lending cannot exceed 33% of the total assets of the Fund taken at current value. The Funds’ securities lending activities are governed by a Securities Lending Agency Agreement (“Lending Agreement”) between each Fund and the lending agent (“Agent”). The Lending Agreement authorizes the Agent to lend portfolio securities held by a Fund to approved borrowers (each, a “Borrower”).

Each Fund expects that in connection with any securities on loan, the loan will be secured continuously by collateral consisting of cash (U.S. currency) and/or securities (U.S. Treasury and Agency obligations) adjusted daily to have value at least equal to the current market value of the securities loaned. The market value of the loaned securities is determined at the close of business of a Fund and any additional collateral is delivered to the Fund the next business day. The Funds bear the risk of loss with respect to the investment of cash collateral. As with other extensions of credit, the Funds may bear the risk of delay in recovery of the loaned securities or even loss of rights in the collateral should the Borrower of the securities fail financially. Pursuant to the Lending Agreement, the Agent has provided indemnification to the Funds in the event of default by a Borrower with respect to a loan. The Funds receive compensation for lending their securities in the form of a securities loan fee paid by the Borrower, as well as a share of the income earned on investment of the cash collateral received for the loaned securities. At June 30, 2022, the Funds’ collateral was equal to or greater than 100% of the market value of securities on loan and all of the Funds’ cash collateral was invested in the State Street Navigator Securities Lending Government Money Market Portfolio.

Subject to the terms of the Lending Agreement and the agreement between the Agent and the applicable Borrower (“Borrowing Agreement”), security loans can be terminated by the Agent, the Fund, or the Borrower and the related securities must be returned within the earlier of the customary settlement period for such securities or the period of time specified in the Borrowing Agreement.

Accounting for Investment Transactions

Investment transactions are accounted for on the trade date. Realized gains and losses on sales of investments and unrealized appreciation and depreciation of investments are computed by the specific identification cost method. Proceeds received from litigation, if any, are included in realized gains on investment transactions for any investments that are no longer held in the portfolio and as a reduction in cost for investments that continue to be held in the portfolio. Interest income, adjusted for amortization of discounts and premiums on debt securities, is earned from the settlement date and is recorded on the accrual basis. Dividend income is recorded on the ex-dividend date. Withholding taxes on foreign interest, dividends, and capital gains have been provided for in accordance with the applicable country’s tax rules and rates. Foreign dividend income is recorded on the ex-dividend date or as soon as practicable after the Fund determines the existence of a dividend declaration after exercising reasonable due diligence. Distributions received on securities that represent a return of capital or capital gains are recorded as a reduction of cost of investments and/or as a realized gain.

Notes to Portfolio of Investments (Unaudited) (Continued)

Foreign Currency Translation

The books and records of the Funds are maintained in U.S. dollars. The market values of foreign currencies, foreign securities, and other assets and liabilities denominated in foreign currencies are translated into U.S. dollars at the mean of the buying and selling rates of such currencies against the U.S. dollar at the end of each business day. Purchases and sales of foreign securities and income and expense items are translated at the rates of exchange prevailing on the respective dates of such transactions. The Funds do not isolate that portion of the results of operations arising from changes in the exchange rates from that portion arising from changes in the market prices of securities. Net realized foreign currency gains and losses resulting from changes in exchange rates include foreign currency gains and losses between trade date and settlement date on investment securities transactions, foreign currency transactions, and the difference between the amounts of dividends or interest recorded on the books of the Funds and the amount actually received.

Foreign Securities

The Global Fund invests a significant amount of its assets in foreign securities and each of the International Equity Fund and Strategic Emerging Markets Fund invests substantially all of its assets in foreign securities. The other Funds may also invest in foreign securities. Foreign securities, including American Depositary Receipts, are subject to additional risks compared to securities of U.S. issuers, including international trade, currency, political, regulatory, and diplomatic risks. In addition, fluctuations in currency exchange rates may adversely affect the values of foreign securities and the price of a Fund’s shares. Emerging markets securities are subject to greater risks than securities issued in developed foreign markets, including less liquidity, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, and greater volatility in currency exchange rates.

Federal Income Tax

It is each Fund’s intent to continue to comply with the provisions of Subchapter M of the Internal Revenue Code of 1986, as amended, applicable to a regulated investment company. Under such provisions, the Funds would not be subject to federal income taxes on their ordinary income and net realized capital gains to the extent they are distributed or deemed to have been distributed to their shareholders. Therefore, the Funds have not made any provision for federal income tax.

Dividends and Distributions to Shareholders

Dividends from net investment income are either declared daily and paid monthly or declared and paid annually depending on the requirements of each Fund. Dividends from net investment income may also be distributed at other times throughout the year as required to satisfy tax or regulatory requirements. Distributions of any net realized capital gains of each Fund are declared and paid annually and at other times as may be required to satisfy tax or regulatory requirements

Notes to Portfolio of Investments (Unaudited) (Continued)

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. As a result, net investment income and net realized capital gains on investment transactions for a reporting period may differ significantly from distributions during such period.

3. Federal Income Tax Information

At June 30, 2022, the aggregate cost of investments and the unrealized appreciation (depreciation) in the value of all investments owned by the Fund(s), as computed on a federal income tax basis, were as follows:

	Federal Income Tax Cost		Tax Basis Unrealized Appreciation		Tax Basis Unrealized (Depreciation)			Net Unrealized Appreciation (Depreciation)
Short-Duration Bond Fund	$	814,519,398	$	260,780	$	(80,313,417	)	$	(80,052,637	)
Inflation-Protected and Income Fund		323,850,596		1,319,775		(14,557,535	)		(13,237,760	)
Core Bond Fund		1,044,679,909		2,722,925		(91,049,784	)		(88,326,859	)
Diversified Bond Fund		205,940,469		744,120		(22,796,383	)		(22,052,263	)
High Yield Fund		515,270,125		4,249,714		(67,735,167	)		(63,485,453	)
Balanced Fund		143,311,062		3,665,795		(10,007,811	)		(6,342,016	)
Disciplined Value Fund		77,529,436		5,864,320		(7,744,429	)		(1,880,109	)
Main Street Fund		85,930,527		13,624,429		(7,392,270	)		6,232,159
Disciplined Growth Fund		179,483,173		12,176,832		(20,607,773	)		(8,430,941	)
Small Cap Opportunities Fund		291,386,323		38,737,747		(23,546,657	)		15,191,090
Global Fund		147,210,215		86,481,140		(14,171,808	)		72,309,332
International Equity Fund		131,803,609		6,672,754		(15,292,496	)		(8,619,742	)
Strategic Emerging Markets Fund		142,896,464		4,357,494		(27,512,861	)		(23,155,367	)

4. New Accounting Pronouncements

In January 2021, FASB issued Accounting Standards Update 2021-01 — Reference Rate Reform (Topic 848) — Scope (“ASU 2021-01”) as an update to Accounting Standards Update 2020-04 — Reference Rate Reform (Topic 848) — Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”) in order to make certain clarifications. ASU 2020-04 and ASU 2021-01 provide optional temporary financial reporting relief from the effect of certain types of contract modifications due to the planned discontinuation of the London Interbank Offered Rate (“LIBOR”) and other interbank-offered based reference rates. The temporary relief provided by ASU 2020-04 and ASU 2021-01 is effective for certain reference rate-related contract modifications that occur during the period March 12, 2020 through December 31, 2022. Management does not believe the impact of adopting ASU 2020-04 and ASU 2021-01 will have a material impact on the financial statements.

5. Coronavirus (COVID-19) Pandemic

The global pandemic outbreak of the novel coronavirus known as COVID-19 and efforts to contain its spread have produced, and will likely continue to produce, substantial market volatility, severe market dislocations and liquidity constraints in many markets, exchange trading suspensions and closures, higher default rates, and global business disruption, and they may result in future significant adverse effects, such as declines in global financial markets and a substantial economic downturn or recession throughout the world. Such factors may have a significant adverse effect on a Fund’s performance and have the potential to impair the ability of a Fund’s investment adviser, subadviser, or other service providers to serve the Fund and could lead to disruptions that negatively impact the Fund.

Notes to Portfolio of Investments (Unaudited) (Continued)

6. Russia-Ukraine War

In February 2022, Russia commenced a large-scale military attack on Ukraine. The outbreak of hostilities between the two countries could result in more widespread conflict and could have a severe adverse effect on the regional and the global financial markets and economies. One or more of the Funds hold positions in securities or other instruments that are economically tied to Russia. Investments in Russia are subject to political, economic, legal, market, and currency risks, as well as the risks related to the economic sanctions on Russia, Russian individuals, and Russian corporate and banking entities imposed by the United States and/or other countries. Such sanctions — which affect companies in many sectors, including energy, financial services, and defense, among others — could adversely affect the global energy and financial markets and, thus, could affect the value of a Fund’s investments, even beyond any direct exposure the Fund may have to Russian issuers or the adjoining geographic regions. Such sanctions may also result in a decline in the value and liquidity of Russian securities and a weakening of the ruble, and will impair a Fund’s ability to buy, sell, receive, or deliver Russian securities. In addition, certain transactions have been or may be prohibited and/or existing investments have or may become illiquid (e.g., because transacting in certain existing investments is prohibited), which could cause a Fund to sell other portfolio holdings at a disadvantageous time or price in order to meet shareholder redemptions.