Massmutual Premier Funds NPORT-P MassMutual Small Cap Opportunities Fund (Jun 2023 report)

MassMutual Short-Duration Bond Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 95.7%
CORPORATE DEBT — 49.1%
Agriculture — 1.9%
BAT Capital Corp.
4.700% 4/02/27	$	1,870,000	$	1,810,580
Imperial Brands Finance PLC
3.125% 7/26/24 (a)		1,120,000		1,082,098
Wens Foodstuffs Group Co. Ltd.
2.349% 10/29/25 (a)		1,925,000		1,714,072
				4,606,750
Auto Manufacturers — 1.5%
Ford Motor Credit Co. LLC
2.300% 2/10/25		1,320,000		1,233,923
Nissan Motor Acceptance Co. LLC
1.850% 9/16/26 (a)		2,720,000		2,307,540
				3,541,463
Banks — 10.2%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		1,585,000		1,528,653
ABQ Finance Ltd.
2.000% 7/06/26 (a)		1,800,000		1,627,452
Bank Mandiri Persero Tbk PT
5.500% 4/04/26 (a)		1,582,000		1,579,082
Barclays PLC
5.200% 5/12/26		1,690,000		1,630,424
BPCE SA
4.625% 7/11/24 (a)		1,200,000		1,172,584
Burgan Bank SAK 5 yr. CMT + 2.229%
2.750% VRN 12/15/31 (a)		2,000,000		1,510,000
Credit Suisse AG
6.500% 8/08/23 (a)		3,910,000		3,881,848
Danske Bank AS 1 yr. CMT + .730%
1.549% VRN 9/10/27 (a)		1,850,000		1,606,877
Deutsche Bank AG SOFR + 1.219%
2.311% VRN 11/16/27		715,000		614,426
HSBC Holdings PLC SOFR + 1.290%
1.589% VRN 5/24/27		1,650,000		1,456,225
Lloyds Banking Group PLC 1 yr. CMT + 1.700%
5.871% VRN 3/06/29		775,000		768,453
Macquarie Group Ltd., (Acquired 7/08/21-8/08/22, Cost $1,356,885), SOFR + 1.069%
1.340% VRN 1/12/27 (a) (b)		1,500,000		1,335,159
Natwest Group PLC 1 yr. CMT + .900%
1.642% VRN 6/14/27		890,000		783,236
Santander U.K. Group Holdings PLC SOFR + 1.220%
2.469% VRN 1/11/28		815,000		711,481

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

	Principal Amount		Value
Societe Generale SA
1 yr. CMT + 1.000% 1.792% VRN 6/09/27 (a)	$	245,000	$	214,160
1 yr. CMT + 1.300% 2.797% VRN 1/19/28 (a)		1,200,000		1,062,851
Synovus Bank GA
5.625% 2/15/28		653,000		589,977
UBS Group AG
SOFR + .980% 1.305% VRN 2/02/27 (a)		1,610,000		1,406,606
1 yr. CMT + 1.080% 1.364% VRN 1/30/27 (a)		875,000		766,703
				24,246,197
Beverages — 0.4%
JDE Peet's NV
1.375% 1/15/27 (a)		1,029,000		892,643
Chemicals — 2.8%
Celanese U.S. Holdings LLC
6.165% 7/15/27		1,050,000		1,044,569
International Flavors & Fragrances, Inc.
1.832% 10/15/27 (a)		925,000		780,002
MEGlobal Canada ULC
5.000% 5/18/25 (a)		1,400,000		1,371,034
Orbia Advance Corp. SAB de CV
1.875% 5/11/26 (a)		2,173,000		1,947,551
Yara International ASA
4.750% 6/01/28 (a)		1,525,000		1,448,728
				6,591,884
Commercial Services — 0.8%
Triton Container International Ltd.
2.050% 4/15/26 (a)		2,100,000		1,833,153
Distribution & Wholesale — 0.9%
Ferguson Finance PLC
4.250% 4/20/27 (a)		725,000		695,519
Li & Fung Ltd.
5.000% STEP 8/18/25 (a)		1,500,000		1,388,212
				2,083,731
Diversified Financial Services — 3.9%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
2.450% 10/29/26		1,500,000		1,339,726
Antares Holdings LP
2.750% 1/15/27 (a)		2,785,000		2,288,125
3.950% 7/15/26 (a)		2,980,000		2,615,632
Avolon Holdings Funding Ltd.
2.875% 2/15/25 (a)		1,945,000		1,808,782
BGC Partners, Inc.
4.375% 12/15/25		1,340,000		1,236,911
				9,289,176
Electric — 1.9%
Alliant Energy Finance LLC
1.400% 3/15/26 (a)		1,630,000		1,441,983
Enel Finance International NV
4.625% 6/15/27 (a)		1,279,000		1,237,910

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

	Principal Amount		Value
Pacific Gas & Electric Co.
4.950% 6/08/25	$	1,110,000	$	1,075,887
Sempra Energy
5.400% 8/01/26		640,000		636,870
				4,392,650
Engineering & Construction — 0.3%
Mexico City Airport Trust
4.250% 10/31/26 (a)		800,000		770,733
Entertainment — 0.3%
Warnermedia Holdings, Inc.
3.638% 3/15/25		730,000		704,103
Food — 2.1%
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
2.500% 1/15/27 (a)		2,225,000		1,949,322
Pilgrim's Pride Corp.
5.875% 9/30/27 (a)		709,000		700,494
Smithfield Foods, Inc.
4.250% 2/01/27 (a)		2,525,000		2,326,897
				4,976,713
Hand & Machine Tools — 0.3%
Regal Rexnord Corp.
6.050% 2/15/26 (a)		725,000		725,920
Health Care – Services — 0.3%
HCA, Inc.
5.200% 6/01/28		680,000		674,470
Home Builders — 0.3%
Toll Brothers Finance Corp.
4.875% 3/15/27		700,000		677,787
Housewares — 0.3%
Newell Brands, Inc.
6.375% 9/15/27		780,000		746,934
Insurance — 4.0%
AmTrust Financial Services, Inc.
6.125% 8/15/23		4,810,000		4,776,010
Athene Global Funding
1.730% 10/02/26 (a)		2,085,000		1,797,190
Lincoln National Corp.
3.800% 3/01/28 (c)		825,000		745,900
Sammons Financial Group, Inc.
4.450% 5/12/27 (a)		2,365,000		2,179,117
				9,498,217
Internet — 1.0%
Expedia Group, Inc.
4.625% 8/01/27		645,000		625,036
Prosus NV
3.257% 1/19/27 (a)		2,000,000		1,807,568
				2,432,604

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

	Principal Amount		Value
Investment Companies — 3.2%
Ares Capital Corp.
3.875% 1/15/26	$	1,635,000	$	1,515,832
Blackstone Private Credit Fund
2.625% 12/15/26		2,275,000		1,935,564
Golub Capital BDC, Inc.
2.500% 8/24/26		1,515,000		1,310,169
OWL Rock Core Income Corp.
4.700% 2/08/27		2,965,000		2,690,505
				7,452,070
Lodging — 0.6%
Las Vegas Sands Corp.
3.200% 8/08/24		1,380,000		1,336,623
Machinery – Construction & Mining — 0.9%
The Weir Group PLC
2.200% 5/13/26 (a)		2,261,000		2,025,123
Mining — 0.3%
Alcoa Nederland Holding BV
6.125% 5/15/28 (a) (c)		770,000		765,857
Oil & Gas — 2.4%
EQT Corp.
6.125% STEP 2/01/25		592,000		588,673
Ovintiv Exploration, Inc.
5.375% 1/01/26		400,000		397,285
Ovintiv, Inc.
5.650% 5/15/28		650,000		637,111
Parkland Corp.
5.875% 7/15/27 (a)		455,000		438,988
Patterson-UTI Energy, Inc.
3.950% 2/01/28		4,130,000		3,700,758
				5,762,815
Pharmaceuticals — 1.6%
CVS Health Corp.
5.000% 1/30/29		680,000		673,446
Hikma Finance USA LLC
3.250% 7/09/25 (a)		1,500,000		1,420,380
Viatris, Inc.
2.300% 6/22/27		1,905,000		1,664,315
				3,758,141
Pipelines — 1.1%
Energy Transfer LP
4.950% 6/15/28		1,625,000		1,576,203
Plains All American Pipeline LP/PAA Finance Corp.
4.500% 12/15/26		960,000		929,617
				2,505,820
Real Estate — 0.9%
MAF Sukuk Ltd.
4.500% 11/03/25 (a)		1,025,000		1,007,391

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

	Principal Amount		Value
Shimao Group Holdings Ltd.
6.125% 2/21/24 (a)	$	14,600,000	$	1,060,268
				2,067,659
Real Estate Investment Trusts (REITS) — 2.8%
CubeSmart LP
2.250% 12/15/28		1,000,000		842,660
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		1,125,000		825,301
Omega Healthcare Investors, Inc.
4.750% 1/15/28		2,069,000		1,888,643
Service Properties Trust
4.350% 10/01/24		2,115,000		2,035,093
Vornado Realty LP
2.150% 6/01/26		1,200,000		1,016,559
				6,608,256
Retail — 0.4%
Advance Auto Parts, Inc.
5.900% 3/09/26		343,000		339,225
Nordstrom, Inc.
4.000% 3/15/27 (c)		740,000		658,600
				997,825
Savings & Loans — 0.1%
Nationwide Building Society
4.000% 9/14/26 (a)		297,000		272,717
Telecommunications — 0.8%
Sprint Capital Corp.
6.875% 11/15/28		650,000		688,996
Tower Bersama Infrastructure Tbk PT
4.250% 1/21/25 (a)		1,300,000		1,267,113
				1,956,109
Venture Capital — 0.8%
Hercules Capital, Inc.
2.625% 9/16/26		2,338,000		2,000,597
TOTAL CORPORATE DEBT (Cost $139,328,256)				116,194,740
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 46.6%
Automobile Asset-Backed Securities — 0.1%
AmeriCredit Automobile Receivables Trust, Series 2020-3, Class D
1.490% 9/18/26		339,000		313,619
Commercial Mortgage-Backed Securities — 4.7%
BAMLL Commercial Mortgage Securities Trust
Series 2019-BPR, Class CMP, 4.024% VRN 11/05/32 (a) (d)		2,280,000		1,949,995
Series 2019-BPR, Class DMP, 4.024% VRN 11/05/32 (a) (d)		3,050,000		2,580,127
JP Morgan Chase Commercial Mortgage Securities Trust, Series 2013-LC11, Class C,
3.958% VRN 4/15/46 (d)		1,015,000		798,625

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

	Principal Amount		Value
One New York Plaza Trust
Series 2020-1NYP, Class C, 1 mo. USD LIBOR + 2.200% 7.393% FRN 1/15/36 (a)	$	4,106,000	$	3,514,642
Series 2020-1NYP, Class D, 1 mo. USD LIBOR + 2.750% 7.943% FRN 1/15/36 (a)		2,760,000		2,170,435
				11,013,824
Home Equity Asset-Backed Securities — 0.0%
Credit Suisse Seasoned Loan Trust, Series 2006-1, Class A, 1 mo. USD LIBOR + .480%
5.630% FRN 10/25/34 (a)		15,770		15,843
Other Asset-Backed Securities — 22.1%
321 Henderson Receivables I LLC, Series 2006-3A, Class A1, 1 mo. USD LIBOR + .200%
5.393% FRN 9/15/41 (a)		37,968		37,367
522 Funding CLO Ltd., Series 2018-3A, Class BR, 3 mo. USD LIBOR + 1.550%
6.800% FRN 10/20/31 (a)		2,352,000		2,281,238
Adams Outdoor Advertising LP, Series 2018-1, Class A
4.810% 11/15/48 (a)		1,668,634		1,572,172
AIMCO CLO Ltd., Series 2019-10A, Class AR, 3 mo. USD LIBOR + 1.060%
6.333% FRN 7/22/32 (a)		5,000,000		4,929,600
Apollo Aviation Securitization AASET Trust, Series 2020-1A, Class B
4.335% 1/16/40 (a)		722,482		361,615
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD LIBOR + .900%
3.815% FRN 10/25/34		79,609		69,441
Ballyrock CLO Ltd., Series 2020-2A, Class A2R, 3 mo. USD LIBOR + 1.550%
6.800% FRN 10/20/31 (a)		4,700,000		4,583,431
BHG Securitization Trust, Series 2021-B, Class C
2.240% 10/17/34 (a)		3,736,000		3,083,586
BRE Grand Islander Timeshare Issuer LLC
Series 2017-1A, Class A, 2.940% 5/25/29 (a)		136,162		132,601
Series 2017-1A, Class B, 3.240% 5/25/29 (a)		38,904		37,883
Series 2019-A, Class B, 3.780% 9/26/33 (a)		765,171		718,760
Canyon Capital CLO Ltd., Series 2017-1A, Class CR, 3 mo. USD LIBOR + 2.000%
7.260% FRN 7/15/30 (a)		1,540,000		1,472,530
CARS-DB4 LP, Series 2020-1A, Class B1
4.170% 2/15/50 (a)		3,289,000		3,029,733
Castlelake Aircraft Structured Trust, Series 2019-1A, Class B
5.095% 4/15/39 (a)		707,996		511,690
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
6.230% FRN 4/20/31 (a)		900,000		892,339
CF Hippolyta Issuer LLC, Series 2020-1, Class B1
2.280% 7/15/60 (a)		577,448		480,320
Elara HGV Timeshare Issuer LLC
Series 2017-A, Class B, 2.960% 3/25/30 (a)		409,837		393,879
Series 2019-A, Class C, 3.450% 1/25/34 (a)		1,636,353		1,516,784
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		2,079,097		1,720,638
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		770,881		671,898
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		1,721,588		1,505,334
Gracie Point International Funding, Series 2021-1A, Class B, 1 mo. USD LIBOR + 1.400%
6.570% FRN 11/01/23 (a)		1,750,000		1,749,160

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

	Principal Amount		Value
Hero Funding Trust
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)	$	591,777	$	506,533
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		116,128		99,863
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		288,919		255,591
Series 2015-1A, Class A, 3.840% 9/21/40 (a)		194,824		175,444
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		94,354		83,104
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		755,739		686,757
Hilton Grand Vacations Trust, Series 2019-AA, Class C
2.840% 7/25/33 (a)		738,087		683,797
Horizon Aircraft Finance II Ltd., Series 2019-1, Class A
3.721% 7/15/39 (a)		2,344,561		2,002,222
Horizon Aircraft Finance III Ltd., Series 2019-2, Class B
4.458% 11/15/39 (a)		1,757,143		697,936
Kestrel Aircraft Funding Ltd., Series 2018-1A, Class A
4.250% 12/15/38 (a)		2,987,965		2,563,196
Mosaic Solar Loans LLC
Series 2018-2GS, Class A, 4.200% 2/22/44 (a)		609,333		551,078
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		103,042		97,045
Neuberger Berman CLO XX Ltd., Series 2015-20A, Class ARR, 3 mo. USD LIBOR + 1.160%
6.420% FRN 7/15/34 (a)		500,000		492,191
Neuberger Berman Loan Advisers CLO Ltd., Series 2017-24A, Class BR, 3 mo. USD LIBOR + 1.500%
6.765% FRN 4/19/30 (a)		500,000		491,230
New Residential Advance Receivables Trust Advance Receivables Backed, Series 2020-T1, Class ET1
5.467% 8/15/53 (a)		1,651,000		1,636,303
Newark BSL CLO Ltd., Series 2017-1A, Class A2R, 3 mo. USD LIBOR + 1.400%
6.655% FRN 7/25/30 (a)		1,375,000		1,342,645
Orange Lake Timeshare Trust
Series 2016-A, Class B, 2.910% 3/08/29 (a)		167,783		159,929
Series 2018-A, Class C, 3.740% 11/08/30 (a)		159,241		156,013
Oxford Finance Funding LLC, Series 2020-1A, Class B
4.037% 2/15/28 (a)		660,812		649,454
Rad CLO 1 Ltd., Series 2018-1A, Class BR, 3 mo. USD LIBOR + 1.400%
6.660% FRN 7/15/31 (a)		2,650,000		2,597,114
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD LIBOR + 1.140%
6.400% FRN 10/15/35 (a)		750,000		737,169
Sierra Timeshare Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		196,166		185,033
Trafigura Securitisation Finance PLC, Series 2021-1A, Class B
1.780% 1/15/25 (a)		4,048,000		3,714,497
				52,316,143
Student Loans Asset-Backed Securities — 7.2%
Chase Education Loan Trust, Series 2007-A, Class B, 3 mo. USD LIBOR + .220%
5.741% FRN 3/28/68		371,339		348,257
College Avenue Student Loans LLC, Series 2017-A, Class A1, 1 mo. USD LIBOR + 1.650%
6.800% FRN 11/26/46 (a)		395,329		394,361
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
5.750% FRN 1/15/37		355,261		303,407
Commonbond Student Loan Trust
Series 2017-AGS, Class B, 3.470% 5/25/41 (a)		286,679		261,582
Series 2018-AGS, Class C, 3.820% 2/25/44 (a)		98,680		83,554

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

	Principal Amount		Value
Series 2018-BGS, Class C, 4.120% 9/25/45 (a)	$	80,965	$	70,236
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		37,950		33,819
Series 2017-AGS, Class C, 5.280% 5/25/41 (a)		149,221		138,478
DRB Prime Student Loan Trust
Series 2017-C, Class B, 2.950% 11/25/42 (a)		689,625		643,565
Series 2017-B, Class CFX, 3.610% 8/25/42 (a)		688,402		650,192
ELFI Graduate Loan Program LLC, Series 2018-A, Class B
4.000% 8/25/42 (a)		214,648		193,887
Goal Capital Funding Trust, Series 2010-1, Class A, 3 mo. USD LIBOR + .700%
6.096% FRN 8/25/48 (a)		38,802		37,868
Goal Structured Solutions Trust, Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500%
6.650% FRN 9/25/43 (a)		100,000		87,901
Higher Education Funding I, Series 2004-1, Class B1,
4.161% FRN 1/01/44 (a) (d)		950,000		857,215
Laurel Road Prime Student Loan Trust, Series 2019-A, Class BFX
3.000% 10/25/48 (a)		1,210,820		1,138,206
Nelnet Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .200% 5.455% FRN 1/25/38		654,340		552,818
Series 2012-4A, Class B, 1 mo. USD LIBOR + 1.000% 6.150% FRN 7/26/49 (a)		900,000		775,682
Series 2018-5A, Class B, 1 mo. USD LIBOR + 1.450% 6.600% FRN 2/25/67 (a)		1,000,000		927,385
Series 2015-3A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 6/25/54 (a)		395,000		364,047
SLC Student Loan Trust
Series 2005-1, Class B, 3 mo. USD LIBOR + .200% 5.521% FRN 2/15/45		364,672		322,627
Series 2006-2, Class B, 3 mo. USD LIBOR + .230% 5.782% FRN 12/15/39		938,541		846,464
Series 2005-3, Class B, 3 mo. USD LIBOR + .250% 5.802% FRN 6/15/55		767,319		705,347
SLM Student Loan Trust
Series 2005-4, Class B, 3 mo. USD LIBOR + .180% 5.435% FRN 7/25/55		484,384		452,144
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.465% FRN 10/25/40		413,542		387,702
Series 2005-5, Class B, ABS, 3 mo. USD LIBOR + .250% 5.505% FRN 10/25/40		488,621		441,732
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 5.565% FRN 1/25/55		346,931		319,237
Series 2004-1 Class B, 3 mo. USD LIBOR + .500% 5.755% FRN 7/25/39		316,441		295,817
Series 2003-4, Class B, 3 mo. USD LIBOR + .650% 6.202% FRN 6/15/38		206,647		194,061
Series 2003-11, Class B, 3 mo. USD LIBOR + .650% 6.202% FRN 12/15/38		756,094		717,516
SMB Private Education Loan Trust
Series 2015-C, Class C, 4.500% 9/17/46 (a)		1,710,000		1,559,668
Series 2016-C, Class A2B, 1 mo. USD LIBOR + 1.100% 6.293% FRN 9/15/34 (a)		46,762		46,303
SoFi Alternative Trust, Series 2019-C, Class PT,
5.569% VRN 1/25/45 (a) (d)		1,796,385		1,714,521
SoFi Professional Loan Program LLC, Series 2019-A, Class BFX, ABS, 144A
4.110% 6/15/48 (a)		870,000		798,213
Wachovia Student Loan Trust, Series 2005-1, Class B, ABS, 3 mo. USD LIBOR + .300%
5.555% FRN 10/25/40		333,154		303,903
				16,967,715
Whole Loan Collateral Collateralized Mortgage Obligations — 12.5%
Angel Oak Mortgage Trust
Series 2021-1, Class M1, 2.215% VRN 1/25/66 (a) (d)		2,290,000		1,514,453
Series 2021-3, Class M1, 2.479% VRN 5/25/66 (a) (d)		6,583,000		4,248,644

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

	Principal Amount		Value
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
4.020% VRN 8/25/34 (d)	$	7,855	$	7,549
Credit Suisse Mortgage Trust, Series 2021-NQM4, Class M1,
2.472% VRN 5/25/66 (a) (d)		7,095,350		4,594,605
Merrill Lynch Mortgage Investors, Inc., Series 2004-A1, Class IIA2,
4.059% VRN 2/25/34 (d)		38,741		35,841
New Residential Mortgage Loan Trust, Series 2020-NQM1, Class M1,
3.207% VRN 1/26/60 (a) (d)		2,252,000		1,890,059
OBX Trust, Series 2021-NQM1, Class M1,
2.219% VRN 2/25/66 (a) (d)		2,501,000		1,553,056
Oceanview Trust, Series 2021-1, Class M3
3.090% 12/29/51 (a)		5,000,000		4,767,376
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (d)		5,582,000		3,594,942
TRK Trust, Series 2021-INV1, Class M1,
2.585% VRN 7/25/56 (a) (d)		1,222,000		807,002
Verus Securitization Trust
Series 2021-1, Class M1, 1.968% VRN 1/25/66 (a) (d)		2,247,000		1,553,105
Series 2019-INV3, Class M1, 3.279% VRN 11/25/59 (a) (d)		2,129,000		1,853,244
Series 2020-4, Class M1, 3.291% VRN 5/25/65 (a) (d)		3,602,000		3,100,910
				29,520,786
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $129,899,171)				110,147,930
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 0.0%
Pass-Through Securities — 0.0%
Federal Home Loan Mortgage Corp. Pool #1Q0239, 1 yr. CMT + 2.159% 4.376% 3/01/37		48,906		49,493
Federal National Mortgage Association Pool #775539 1 yr. USD LIBOR + 1.641% 5.391% 5/01/34		13,306		13,469
Government National Mortgage Association Pool #507545 7.500% 8/15/29		17,858		18,394
				81,356
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $81,089)				81,356
TOTAL BONDS & NOTES (Cost $269,308,516)				226,424,026
TOTAL LONG-TERM INVESTMENTS (Cost $269,308,516)				226,424,026
SHORT-TERM INVESTMENTS — 2.7%
Commercial Paper — 2.1%
Alimentation Couche-Tard, Inc.
5.468% 7/13/23 (a)		5,000,000		4,990,360
Investment of Cash Collateral from Securities Loaned — 0.6%	Number of Shares
State Street Navigator Securities Lending Government Money Market Portfolio (f)		1,389,480		1,389,480

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

	Principal Amount	Value
TOTAL SHORT-TERM INVESTMENTS (Cost $6,380,514)		$	6,379,840
TOTAL INVESTMENTS — 98.4% (Cost $275,689,030) (g)			232,803,866
Other Assets/(Liabilities) — 1.6%			3,787,498
NET ASSETS — 100.0%		$	236,591,364

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, 2023, the aggregate market value of these securities amounted to $171,607,521 or 72.53% of net assets.

(b) Restricted security. Certain securities are restricted as to resale. At June 30, 2023, these securities amounted to a value of $1,335,159 or 0.56% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $2,115,868 or 0.89% of net assets. The Fund received $777,604 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, 2023.

(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) 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 Note 2 Year	9/29/23		631	$	129,809,194	$	(1,499,288)
Short
U.S. Treasury Long Bond	9/20/23		6		(761,945)		507
U.S. Treasury Ultra 10 Year	9/20/23		110		(13,160,862)		132,737
U.S. Treasury Ultra Bond	9/20/23		3		(404,052)		(4,604)
U.S. Treasury Note 5 Year	9/29/23		494		(53,924,737)		1,020,425
						$	1,149,065

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation (Depreciation)

CDX.NA.IG Series 40†

1.000%

Quarterly

6/20/28

USD

22,000,000

$

(328,768)

$

(114,957)

$

(213,811)

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

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 3.965%		Annually		6/23/25	USD	10,000,000	$	(161,306)	$	—	$	(161,306)
12-Month USD SOFR	Annually		Fixed 3.815%		Annually		6/30/25	USD	8,350,000		(157,666)		—		(157,666)
12-Month USD SOFR	Annually		Fixed 3.749%		Annually		7/14/25	USD	8,374,000		(164,089)		—		(164,089)
12-Month USD SOFR	Annually		Fixed 3.618%		Annually		8/07/25	USD	9,049,000		(190,154)		—		(190,154)
Fixed 3.293%	Annually		12-Month USD SOFR		Annually		6/23/33	USD	2,000,000		43,811		—		43,811
Fixed 3.223%	Annually		12-Month USD SOFR		Annually		6/30/33	USD	2,100,000		58,116		—		58,116
Fixed 3.086%	Annually		12-Month USD SOFR		Annually		7/14/33	USD	2,092,000		80,186		—		80,186
Fixed 3.107%	Annually		12-Month USD SOFR		Annually		8/07/33	USD	2,005,000		70,778		—		70,778
										$	(420,324)	$	—	$	(420,324)

† Payment is based on a percentage of the index. Reference entities are a number of individual issuers comprising the index.

Currency Legend

USD U.S. Dollar

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 83.8%
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 52.7%
Automobile Asset-Backed Securities — 8.8%
BOF URSA VI Funding Trust I, Series 2023-CAR2, Class A2
5.542% 10/27/31 (a)	$	3,084,514	$	3,041,532
Carvana Auto Receivables Trust, Series 2020-N3, Class B
0.660% 6/12/28		1,515,406		1,388,575
Drive Auto Receivables Trust
Series 2021-1, Class C, 1.020% 6/15/27		1,467,435		1,447,077
Series 2021-3, Class C, 1.470% 1/15/27		3,445,000		3,300,194
Exeter Automobile Receivables Trust, Series 2020-2A, Class D
4.730% 4/15/26 (a)		2,497,861		2,481,311
Hertz Vehicle Financing LLC, Series 2021-1A, Class D
3.980% 12/26/25 (a)		4,600,000		4,303,755
Onemain Direct Auto Receivable Trust, Series 2022-1A, Class C
5.310% 6/14/29 (a)		1,100,000		1,035,965
Santander Drive Auto Receivables Trust, Series 2021-2, Class D
1.350% 7/15/27		5,000,000		4,725,138
Westlake Automobile Receivables Trust, Series 2020-3A, Class D
1.650% 2/17/26 (a)		2,779,000		2,672,436
				24,395,983
Commercial Mortgage-Backed Securities — 7.4%
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD LIBOR + 1.500%
6.693% FRN 7/15/35 (a)		1,150,000		1,097,557
BX Commercial Mortgage Trust, Series 2019-XL, Class F, 1 mo. USD Term SOFR + 2.114%
7.262% FRN 10/15/36 (a)		2,082,500		2,048,726
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class D, 1 mo. USD LIBOR + 1.750%
6.943% FRN 12/15/37 (a)		250,836		246,450
COMM Mortgage Trust, Series 2015-LC19, Class D
2.867% 2/10/48 (a)		2,457,000		2,026,068
Credit Suisse Mortgage Capital Certificates
Series 2019-ICE4, Class D, 1 mo. USD LIBOR + 1.600% 6.793% FRN 5/15/36 (a)		5,985,110		5,914,081
Series 2019-ICE4, Class E, 1 mo. USD LIBOR + 2.150% 7.343% FRN 5/15/36 (a)		3,596,053		3,515,189
KNDL Mortgage Trust
Series 2019-KNSQ, Class D, FRN, 144A, 1 mo. USD LIBOR + 1.500% 6.693% FRN 5/15/36 (a)		2,500,000		2,468,769
Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.950% 7.143% FRN 5/15/36 (a)		389,000		382,804
Ready Capital Commercial Mortgage Financing LLC, Series 2023-FL12, Class A, 1 mo. USD Term SOFR + 2.335
7.335% FRN 5/25/38 (a)		3,000,000		2,986,352
				20,685,996

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

	Principal Amount		Value
Home Equity Asset-Backed Securities — 0.5%
Centex Home Equity Loan Trust, Series 2006-A, Class M1, 1 mo. USD LIBOR + .450%
5.600% FRN 6/25/36	$	20,922	$	20,894
Home Equity Asset Trust, Series 2005-9, Class M1, 1 mo. USD LIBOR + .615%
5.765% FRN 4/25/36		1,338,678		1,296,260
				1,317,154
Other Asset-Backed Securities — 19.1%
321 Henderson Receivables I LLC, Series 2006-3A, Class A1, 1 mo. USD LIBOR + .200%
5.393% FRN 9/15/41 (a)		40,815		40,170
ACHV ABS Trust, Series 2023-1PL, Class A
6.420% 3/18/30 (a)		254,530		254,585
Affirm Asset Securitization Trust
Series 2021-Z1, Class A, 1.070% 8/15/25 (a)		3,821,894		3,739,669
Series 2021-Z2, Class A, 1.170% 11/16/26 (a)		640,192		618,104
Series 2022-X1, Class A, 1.750% 2/15/27 (a)		1,108,117		1,082,671
Series 2018-A, Class A, 1.900% 1/15/25 (a)		378,922		374,735
BHG Securitization Trust
Series 2021-B, Class A, 0.900% 10/17/34 (a)		903,716		864,936
Series 2022-C, Class A, 5.320% 10/17/35 (a)		3,395,193		3,356,669
Series 2023-A, Class A, 5.550% 4/17/36 (a)		3,360,394		3,310,073
Cascade Funding Mortgage Trust, Series 2021-EBO1, Class A,
0.985% VRN 11/25/50 (a) (b)		1,414,045		1,318,561
Elara HGV Timeshare Issuer LLC
Series 2016-A, Class A, 2.730% 4/25/28 (a)		373,272		369,507
Series 2016-A, Class B, 3.220% 4/25/28 (a)		82,038		80,888
Series 2017-A, Class C, 3.310% 3/25/30 (a)		229,231		216,671
FCI Funding LLC
Series 2021-1A, Class A, 1.130% 4/15/33 (a)		951,678		909,074
Series 2021-1A, Class B, 1.530% 4/15/33 (a)		568,714		540,501
First Franklin Mortgage Loan Trust
Series 2006-FF15, Class A5, 1 mo. USD LIBOR + .160% 5.310% FRN 11/25/36		366,842		352,974
Series 2005-FF9, Class A4, 1 mo. USD LIBOR + .720% 5.870% FRN 10/25/35		27,794		27,800
FNA VI LLC, Series 21-1A, Class A
1.350% 1/10/32 (a)		2,787,885		2,519,314
Gracie Point International Funding
Series 2021-1A, Class A, 1 mo. USD LIBOR + .750% 5.920% FRN 11/01/23 (a)		6,178,951		6,174,019
Series 2022-1A, Class C, 30 day USD SOFR Average + 3.500% 8.532% FRN 4/01/24 (a)		2,300,000		2,299,986
Series 2022-3A, Class B, 30 day USD SOFR Average + 4.000% 9.032% FRN 11/01/24 (a)		2,500,000		2,502,426
Series 2022-1A, Class E, 30 day USD SOFR Average + 5.750% 10.782% FRN 4/01/24 (a)		1,287,000		1,286,988
Hilton Grand Vacations Trust
Series 2017-AA, Class B, 2.960% 12/26/28 (a)		135,510		132,449
Series 2022-2A, Class C, 5.570% 1/25/37 (a)		1,310,856		1,252,368
JP Morgan Mortgage Acquisition Trust, Series 2007-CH3, Class A5, 1 mo. USD LIBOR + .260%
5.410% FRN 3/25/37		257,436		248,991
KREF Ltd., Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200%
7.358% FRN 2/15/39 (a)		900,000		824,938

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

	Principal Amount		Value
Marlette Funding Trust, Series 2023-2A, Class A
6.040% 6/15/33 (a)	$	2,028,413	$	2,022,089
MVW Owner Trust, Series 2018-1A, Class A
3.450% 1/21/36 (a)		432,706		421,443
New Residential Advance Receivables Trust Advance Receivables Backed
Series 2020-T1, Class BT1, 1.823% 8/15/53 (a)		1,000,000		991,945
Series 2020-T1, Class DT1, 3.011% 8/15/53 (a)		1,510,000		1,498,140
NP SPE II LLC, Series 2019-1A, Class A1
2.574% 9/20/49 (a)		141,968		131,827
Oportun Funding LLC, Series 2022-1, Class A
3.250% 6/15/29 (a)		908,405		895,990
Orange Lake Timeshare Trust
Series 2016-A, Class A, 2.610% 3/08/29 (a)		176,516		168,744
Series 2016-A, Class B, 2.910% 3/08/29 (a)		233,898		222,949
Pagaya AI Debt Selection Trust
Series 2021-3, Class A, 1.150% 5/15/29 (a)		884,798		876,277
Series 2022-1, Class A, 2.030% 10/15/29 (a)		6,132,376		5,969,954
Sierra Timeshare Receivables Funding LLC
Series 2019-3A, Class C, 3.000% 8/20/36 (a)		540,746		512,131
Series 2019-2A, Class C, 3.120% 5/20/36 (a)		491,507		462,813
Series 2019-1A, Class C, 3.770% 1/20/36 (a)		156,108		149,437
Series 2019-3A, Class D, 4.180% 8/20/36 (a)		135,648		129,076
Series 2019-1A, Class D, 4.750% 1/20/36 (a)		100,169		93,703
Structured Asset Investment Loan Trust, Series 2005-2, Class M2, 1 mo. USD LIBOR + .735%
5.885% FRN 3/25/35		264,947		262,821
Structured Asset Securities Corp. Mortgage Loan Trust
Series 2006-BC6, Class A4, 1 mo. USD LIBOR + .170% 5.320% FRN 1/25/37		160,976		156,701
Series 2006-WF1, Class M4, 1 mo. USD LIBOR + .645% 5.795% FRN 2/25/36		218,347		217,018
Trafigura Securitisation Finance PLC, Series 2021-1A, Class B
1.780% 1/15/25 (a)		1,800,000		1,651,703
Upstart Securitization Trust, Series 2021-4, Class A
0.840% 9/20/31 (a)		1,673,594		1,651,474
				53,185,302
Student Loans Asset-Backed Securities — 5.6%
Chase Education Loan Trust, Series 2007-A, Class A4, 3 mo. USD LIBOR + .100%
5.621% FRN 3/28/68		1,423,011		1,376,554
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
5.750% FRN 1/15/37		179,500		153,300
Commonbond Student Loan Trust
Series 2021-AGS, Class B, 1.400% 3/25/52 (a)		151,009		113,888
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		9,831		8,761
Series 2019-AGS, Class A2, 1 mo. USD LIBOR + .900% 6.050% FRN 1/25/47 (a)		285,967		282,196
DRB Prime Student Loan Trust, Series 2017-A, Class A1, 1 mo. USD LIBOR + .850%
6.000% FRN 5/27/42 (a)		3,875		3,875
ELFI Graduate Loan Program LLC, Series 2018-A, Class A1, 1 mo. USD LIBOR + .750%
5.900% FRN 8/25/42 (a)		445,857		436,549
Goal Capital Funding Trust, Series 2010-1, Class A, 3 mo. USD LIBOR + .700%
6.096% FRN 8/25/48 (a)		70,397		68,704

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%
5.623% FRN 6/28/39 (a)	$	185,102	$	166,015
Laurel Road Prime Student Loan Trust
Series 2019-A, Class A1FX, 2.340% 10/25/48 (a)		91,839		89,203
Series 2018-B, Class A2FX, 3.540% 5/26/43 (a)		250,020		245,139
Series 2017-C, Class A1, 1 mo. USD LIBOR + .550% 5.700% FRN 11/25/42 (a)		42,540		42,392
Navient Private Education Refi Loan Trust
Series 2021-A, Class A, 0.840% 5/15/69 (a)		4,825,007		4,188,426
Series 2020-HA, Class A, 1.310% 1/15/69 (a)		1,121,196		1,014,846
Navient Student Loan Trust, Series 2016-7A, Class A, 1 mo. USD LIBOR + 1.150%
6.300% FRN 3/25/66 (a)		1,196,972		1,188,025
Nelnet Student Loan Trust
Series 2005-2, Class B, 90 day USD SOFR Average + .432% 5.398% FRN 3/23/37		523,365		479,403
Series 2006-2, Class B, 3 mo. USD LIBOR + .200% 5.455% FRN 1/25/38		269,434		227,631
Series 2006-3, Class B, 90 day USD SOFR Average + .512% 5.487% FRN 6/25/41		149,956		131,758
Series 2004-3, Class B, 3 mo. USD LIBOR + .350% 5.605% FRN 10/25/40		545,845		511,032
Series 2014-2A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 6/25/41 (a)		295,000		292,042
SLC Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .230% 5.782% FRN 12/15/39		199,084		179,553
Series 2005-2, Class B, 3 mo. USD LIBOR + .280% 5.832% FRN 3/15/40		665,100		611,043
SLM Student Loan Trust
Series 2005-5, Class A4, 3 mo. USD LIBOR + .140% 5.395% FRN 10/25/28		55,776		55,745
Series 2006-4, Class B, 3 mo. USD LIBOR + .200% 5.455% FRN 1/25/70		135,321		127,381
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.465% FRN 10/25/40		213,514		200,172
Series 2006-2, Class B, 3 mo. USD LIBOR + .220% 5.475% FRN 1/25/41		233,112		216,242
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 5.565% FRN 1/25/55		208,159		191,542
Series 2004-3, Class B, 3 mo. USD LIBOR + .470% 5.725% FRN 10/25/64		135,641		128,768
Series 2003-11, Class B, 3 mo. USD LIBOR + .650% 6.202% FRN 12/15/38		153,262		145,443
SMB Private Education Loan Trust
Series 2019-A, Class A2B, 1 mo. USD LIBOR + .870% 6.063% FRN 7/15/36 (a)		817,024		807,248
Series 2014-A, Class A3, 1 mo. USD LIBOR + 1.500% 6.693% FRN 4/15/32 (a)		733,256		734,084
SoFi Alternative Trust, Series 2019-C, Class PT,
5.569% VRN 1/25/45 (a) (b)		454,206		433,507
SoFi Professional Loan Program LLC, Series 2018-D, Class A2FX
3.600% 2/25/48 (a)		668,840		638,886
				15,489,353
Whole Loan Collateral Collateralized Mortgage Obligations — 11.3%
Angel Oak Mortgage Trust, Series 2022-2, Class A1,
3.353% VRN 1/25/67 (a) (b)		2,116,973		1,899,952
BRAVO Residential Funding Trust, Series 2021-NQM2, Class A3,
1.435% VRN 3/25/60 (a) (b)		651,075		595,835
CIM Trust, Series 2019-INV3, Class A11, 1 mo. USD LIBOR + 1.000%
5.500% FRN 8/25/49 (a)		704,921		657,963
COLT Mortgage Loan Trust, Series 2022-1, Class A1,
2.284% VRN 12/27/66 (a) (b)		8,191,830		6,964,924
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (b)		416,593		378,221

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

	Principal Amount		Value
Lakeview Trust
Series 2022-1, Class M3, 4.585% 4/25/52 (a)	$	1,400,000	$	1,334,587
Series 2022-3, Class M3, 5.437% 5/29/52 (a)		3,300,000		3,117,018
NewRez Warehouse Securitization Trust, Series 2021-1, Class A, 1 mo. USD LIBOR + .750%
5.900% FRN 5/25/55 (a)		4,621,933		4,585,302
Oceanview Trust
Series 2021-1, Class A, 1.219% 12/29/51 (a)		1,427,309		1,389,344
Series 2021-1, Class M3, 3.090% 12/29/51 (a)		2,906,000		2,770,799
Onslow Bay Financial LLC
Series 2021-NQM2, Class A2, 1.357% VRN 5/25/61 (a) (b)		614,654		470,998
Series 2020-EXP1, Class 2A2, 1 mo. USD LIBOR + .950% 6.100% FRN 2/25/60 (a)		319,917		296,379
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 3.850%
9.000% FRN 2/25/25 (a)		270,000		269,331
PSMC Trust, Series 2020-2, Class A2,
3.000% VRN 5/25/50 (a) (b)		854,800		748,341
Starwood Mortgage Residential Trust
Series 2020-1, Class M1, 2.878% VRN 2/25/50 (a) (b)		1,000,000		824,745
Series 2019-INV1, Class A3, 2.916% VRN 9/27/49 (a) (b)		1,126,290		1,064,640
Starwood Residential Mortgage Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (b)		3,424,402		2,892,870
Verus Securitization Trust
Series 2021-3, Class A3, 1.437% VRN 6/25/66 (a) (b)		895,835		738,015
Series 2019-INV2, Class A3, 3.219% VRN 7/25/59 (a) (b)		367,455		353,850
				31,353,114
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $152,206,662)				146,426,902
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (c) — 12.5%
Whole Loans — 12.5%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes
Series 2021-DNA6, Class M1, 30 day USD SOFR Average + .800% 5.867% FRN 10/25/41 (a)		5,337,440		5,318,026
Series 2021-HQA3, Class M1, 30 day USD SOFR Average + .850% 5.917% FRN 9/25/41 (a)		7,719,396		7,495,376
Series 2021-DNA7, Class M1, 30 day USD SOFR Average + .850% 5.917% FRN 11/25/41 (a)		1,833,544		1,814,100
Series 2022-DNA1, Class M1A, 30 day USD SOFR Average + 1.000% 6.067% FRN 1/25/42 (a)		603,807		594,095
Series 2022-DNA2, Class M1A, 30 day USD SOFR Average + 1.300% 6.367% FRN 2/25/42 (a)		1,644,552		1,635,501
Series 2020-DNA1, Class M2, 1 mo. USD LIBOR + 1.700% 6.850% FRN 1/25/50 (a)		974,011		974,448
Series 2022-DNA3, Class M1A, 30 day USD SOFR Average + 2.000% 7.067% FRN 4/25/42 (a)		2,991,585		2,995,377
Series 2018-DNA3, Class M2A, 1 mo. USD LIBOR + 2.100% 7.250% FRN 9/25/48 (a)		635,325		639,371
Series 2020-DNA5, Class M2, 30 day USD SOFR Average + 2.800% 7.867% FRN 10/25/50 (a)		500,641		507,825
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes, REMICS, Series 2022-DNA5, Class M1A, 30 day USD SOFR Average + 2.950%
8.017% FRN 6/25/42 (a)		2,950,557		3,003,974

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

	Principal Amount		Value
Federal National Mortgage Association Connecticut Avenue Securities Trust
30 day USD SOFR Average + 1.900% 6.967% FRN 6/25/43 (a) (d)	$	1,400,000	$	1,401,313
Series 2019-R03, Class 1M2, 1 mo. USD LIBOR + 2.150% 7.300% FRN 9/25/31 (a)		295,150		295,556
Series 2019-R02, Class 1M2, 1 mo. USD LIBOR + 2.300% 7.450% FRN 8/25/31 (a)		91,975		92,077
Series 2023-R03, Class 2M1, 30 day USD SOFR Average + 2.500% 7.567% FRN 4/25/43 (a)		3,035,830		3,062,057
Series 2022-R07, Class 1M1, 30 day USD SOFR Average + 2.950% 8.017% FRN 6/25/42 (a)		4,850,551		4,964,031
				34,793,127
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $35,031,992)				34,793,127
U.S. TREASURY OBLIGATIONS — 18.6%
U.S. Treasury Bonds & Notes — 18.6%
U.S. Treasury Inflation Index
0.125% 4/15/26		1,966,169		1,843,533
0.125% 7/15/26		1,796,840		1,687,713
0.125% 10/15/26		2,330,979		2,178,965
0.125% 4/15/27		2,363,372		2,187,319
0.125% 1/15/30		2,122,020		1,903,104
0.125% 7/15/30		1,951,950		1,750,083
0.125% 1/15/31		2,505,116		2,225,810
0.125% 7/15/31		2,574,549		2,282,373
0.125% 1/15/32		2,242,874		1,973,904
0.125% 2/15/51		757,257		504,596
0.125% 2/15/52		980,622		649,691
0.250% 7/15/29		2,282,607		2,083,905
0.250% 2/15/50		1,061,793		741,689
0.375% 1/15/27		1,883,460		1,767,086
0.375% 7/15/27		2,355,886		2,208,206
0.500% 1/15/28		368,895		345,010
0.625% 7/15/32		2,400,835		2,206,048
0.625% 2/15/43		1,055,408		865,105
0.750% 7/15/28 (e)		2,199,161		2,083,662
0.750% 2/15/42		939,624		797,790
0.750% 2/15/45		1,210,767		999,722
0.875% 1/15/29		2,072,105		1,961,053
0.875% 2/15/47		753,906		631,912
1.000% 2/15/46		640,050		554,731
1.000% 2/15/48		676,495		581,323
1.000% 2/15/49		488,171		419,369
1.125% 1/15/33		2,240,150		2,145,753
1.375% 2/15/44		1,301,440		1,224,904
1.500% 2/15/53		612,228		594,979
1.625% 10/15/27		2,201,407		2,168,837
1.750% 1/15/28		1,303,029		1,287,772
2.000% 1/15/26		764,095		753,872
2.125% 2/15/40		140,148		150,280
2.125% 2/15/41		706,370		757,472
2.375% 1/15/27		1,052,828		1,058,051
2.500% 1/15/29		918,275		945,536
3.375% 4/15/32		341,760		388,538
3.625% 4/15/28		1,125,186		1,207,568

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

	Principal Amount		Value
3.875% 4/15/29	$	1,476,032	$	1,630,468
				51,747,732
TOTAL U.S. TREASURY OBLIGATIONS (Cost $57,102,278)				51,747,732
TOTAL BONDS & NOTES (Cost $244,340,932)				232,967,761
TOTAL LONG-TERM INVESTMENTS (Cost $244,340,932)				232,967,761
SHORT-TERM INVESTMENTS — 15.4%
Commercial Paper — 14.6%
AT&T, Inc.
5.998% 11/21/23 (a)		2,000,000		1,954,672
6.119% 3/19/24 (a)		3,000,000		2,871,766
Avery Dennison Corp.
5.795% 10/24/23 (a)		2,000,000		1,963,222
Bayer Corp.
6.218% 9/19/23 (a)		5,000,000		4,939,036
CRH America Finance, Inc.
5.821% 10/05/23 (a)		3,000,000		2,954,184
Entergy Corp.
5.883% 7/06/23 (a)		5,000,000		4,995,642
Fidelity National Information Services, Inc.
5.611% 7/26/23 (a)		3,900,000		3,884,883
Northrop Grumman Corp.
5.759% 8/17/23		3,000,000		2,978,112
TELUS Corp.
5.822% 10/26/23 (a)		5,000,000		4,906,223
TransCanada PipeLines Ltd.
5.729% 8/09/23 (a)		3,000,000		2,981,723
VF Corp.
5.276% 7/05/23		4,000,000		3,997,076
VW Credit, Inc.
5.500% 7/14/23 (a)		2,000,000		1,995,893
				40,422,432
Repurchase Agreement — 0.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (f)		2,156,758		2,156,758
TOTAL SHORT-TERM INVESTMENTS (Cost $42,584,445)				42,579,190
TOTAL INVESTMENTS — 99.2% (Cost $286,925,377) (g)				275,546,951
Other Assets/(Liabilities) — 0.8%				2,242,555
NET ASSETS — 100.0%			$	277,789,506

Abbreviation Legend

FRN Floating Rate Note

REMICS Real Estate Mortgage Investment Conduits

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, 2023, the aggregate market value of these securities amounted to $196,487,263 or 70.73% of net assets.

(b) 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, 2023.

(c) 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.

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

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

(f) Maturity value of $2,157,031. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $2,199,921.

(g) 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 Long Bond	9/20/23		4	$	(507,112)	$	(513)
U.S. Treasury Ultra 10 Year	9/20/23		1		(119,529)		1,091
U.S. Treasury Ultra Bond	9/20/23		4		(550,236)		5,361
U.S. Treasury Note 2 Year	9/29/23		342		(70,547,860)		1,004,297
U.S. Treasury Note 5 Year	9/29/23		39		(4,256,559)		79,903
						$	1,090,139

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 4.661%		Annually		5/08/25	USD	19,600,000	$	(93,467)	$	—	$	(93,467)
12-Month USD SOFR	Annually		Fixed 4.864%		Annually		6/13/25	USD	39,000,000		18,225		—		18,225
12-Month USD SOFR	Annually		Fixed 3.569%		Annually		7/10/25	USD	19,000,000		(435,217)		—		(435,217)
12-Month USD SOFR	Annually		Fixed 3.725%		Annually		7/14/25	USD	19,200,000		(380,046)		—		(380,046)
12-Month USD SOFR	Annually		Fixed 3.512%		Annually		8/09/25	USD	38,000,000		(860,602)		—		(860,602)
Fixed 3.905%	Annually		12-Month USD SOFR		Annually		5/08/33	USD	4,500,000		(118,833)		—		(118,833)
Fixed 3.646%	Annually		12-Month USD SOFR		Annually		6/13/33	USD	8,900,000		(58,875)		—		(58,875)
Fixed 2.956%	Annually		12-Month USD SOFR		Annually		7/10/33	USD	4,210,000		207,346		—		207,346
Fixed 3.067%	Annually		12-Month USD SOFR		Annually		7/14/33	USD	4,300,000		171,107		—		171,107
Fixed 3.121%	Annually		12-Month USD SOFR		Annually		8/09/33	USD	8,500,000		288,126		—		288,126
										$	(1,262,236)	$	—	$	(1,262,236)

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)
Fed Funds +19.5 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Barclays PLC	11/30/23		61,723,995	$	(208,270)	$	—	$	(208,270)
Fed Funds +12.5 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	7/31/23		3,814,627		1,404		—		1,404
Fed Funds +15.8 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	8/31/23		66,032,025		942,713		—		942,713
Fed Funds +9.0 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	7/31/23		2,487,349		915		—		915
Fed Funds +9.0 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	8/31/23		30,120,675		430,021		—		430,021
Fed Funds +9.0 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	10/31/23		48,082,797		(735,486)		—		(735,486)
								$	431,298	$	—	$	431,298

Currency Legend

USD U.S. Dollar

MassMutual Core Bond Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 99.5%
CORPORATE DEBT — 38.3%
Aerospace & Defense — 0.1%
Boeing Co.
5.930% 5/01/60	$	710,000	$	703,175
Agriculture — 0.8%
BAT Capital Corp.
3.462% 9/06/29		1,125,000		974,586
4.700% 4/02/27		611,000		591,585
4.758% 9/06/49		805,000		607,703
Imperial Brands Finance PLC
3.875% 7/26/29 (a)		1,627,000		1,432,943
Reynolds American, Inc.
5.850% 8/15/45		1,025,000		911,537
Viterra Finance BV
3.200% 4/21/31 (a) (b)		1,540,000		1,289,725
				5,808,079
Airlines — 0.2%
Spirit Airlines Pass-Through Trust, Series 2015-1, Class A,
4.100% 10/01/29		1,013,224		915,899
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27		318,872		299,049
				1,214,948
Auto Manufacturers — 0.4%
General Motors Co.
5.150% 4/01/38		785,000		698,631
General Motors Financial Co., Inc.
3.100% 1/12/32		1,815,000		1,467,975
Nissan Motor Co. Ltd.
4.345% 9/17/27 (a)		594,000		540,246
				2,706,852
Auto Parts & Equipment — 0.1%
Lear Corp.
3.550% 1/15/52		1,470,000		980,721
Banks — 8.9%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		2,100,000		2,025,345
Bank Hapoalim BM 5 yr. CMT + 2.155%
3.255% VRN 1/21/32 (a)		2,800,000		2,398,239
Bank of America Corp.
SOFR + .730% 0.810% VRN 10/24/24		1,950,000		1,917,570
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		2,930,000		2,241,544
5 yr. CMT + 2.000% 3.846% VRN 3/08/37		2,225,000		1,902,652

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
6.110% 1/29/37	$	1,275,000	$	1,344,636
7.750% 5/14/38		1,055,000		1,252,128
Bank of Nova Scotia 3 mo. USD LIBOR + 2.648%
7.846% VRN (c)		3,550,000		2,940,997
Barclays PLC
5 yr. USD Swap + 4.842% 7.750% VRN (c)		1,550,000		1,518,845
5 yr. CMT + 5.431% 8.000% VRN (c)		1,368,000		1,222,171
BNP Paribas SA 5 yr. USD Swap + 4.149%
6.625% VRN (a) (c)		1,185,000		1,138,045
BPCE SA SOFR + 1.730%
3.116% VRN 10/19/32 (a)		2,080,000		1,605,399
Citigroup, Inc. 3 mo. USD LIBOR + 4.068%
9.341% VRN (c)		865,000		868,028
Credit Suisse AG
7.950% 1/09/25		1,835,000		1,872,145
Discover Bank 5 yr. USD ICE Swap + 1.730%
4.682% VRN 8/09/28		3,128,000		2,859,953
Goldman Sachs Group, Inc.
SOFR + 1.410% 3.102% VRN 2/24/33		1,550,000		1,309,368
6.750% 10/01/37		1,565,000		1,683,226
HSBC Holdings PLC
SOFR + 1.290% 1.589% VRN 5/24/27		2,151,000		1,898,388
SOFR + 1.285% 2.206% VRN 8/17/29		1,355,000		1,133,548
SOFR + 1.970% 6.161% VRN 3/09/29		1,845,000		1,860,701
Huntington Bancshares, Inc.
5 yr. CMT + 1.170% 2.487% VRN 8/15/36		257,000		181,188
2.625% 8/06/24 (b)		1,075,000		1,028,356
ING Groep NV 5 yr. USD ICE Swap + 4.204%
6.750% VRN (a) (c)		1,325,000		1,262,063
JP Morgan Chase & Co.
3 mo. USD Term SOFR + 2.515% 2.956% VRN 5/13/31		1,350,000		1,157,558
5.600% 7/15/41		1,225,000		1,273,968
Lloyds Banking Group PLC
5 yr. USD Swap + 4.760% 7.500% VRN (c)		2,325,000		2,220,956
1 yr. CMT + 3.750% 7.953% VRN 11/15/33		1,075,000		1,166,239
Macquarie Bank Ltd. 5 yr. CMT + 1.700%
3.052% VRN 3/03/36 (a)		2,550,000		1,934,558
Mizrahi Tefahot Bank Ltd. 5 yr. CMT + 2.250%
3.077% VRN 4/07/31 (a)		3,585,000		3,125,475
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		1,410,000		1,069,824
SOFR + 2.620% 5.297% VRN 4/20/37		2,660,000		2,516,879
National Australia Bank Ltd. 5 yr. CMT + 1.700%
3.347% VRN 1/12/37 (a)		3,060,000		2,408,698
Natwest Group PLC 1 yr. CMT + 1.350%
5.847% VRN 3/02/27		627,000		620,132
SVB Financial Group
4.250% (c)		301,000		21,069
Synovus Bank GA
5.625% 2/15/28		1,531,000		1,383,239
Toronto-Dominion Bank 5 yr. CMT + 4.075%
8.125% VRN 10/31/82		1,642,000		1,668,075
U.S. Bancorp SOFR + 2.260%
5.836% VRN 6/12/34		1,096,000		1,103,930
UBS Group AG
SOFR + .980% 1.305% VRN 2/02/27 (a)		2,600,000		2,271,537
SOFR + 3.340% 6.373% VRN 7/15/26 (a)		1,738,000		1,727,022

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Wells Fargo & Co.
5.900% VRN (c) (d)	$	2,025,000	$	1,997,156
				65,130,850
Beverages — 0.3%
Bacardi Ltd./Bacardi-Martini BV
5.900% 6/15/43 (a)		437,000		441,329
Molson Coors Beverage Co.
4.200% 7/15/46		1,479,000		1,224,684
5.000% 5/01/42		350,000		324,108
				1,990,121
Biotechnology — 0.1%
Amgen, Inc.
5.600% 3/02/43		972,000		974,941
Chemicals — 0.3%
Celanese U.S. Holdings LLC
6.165% 7/15/27		975,000		969,957
LYB International Finance III LLC
4.200% 5/01/50		1,475,000		1,124,978
				2,094,935
Coal — 0.1%
Teck Resources Ltd.
6.000% 8/15/40		1,022,000		995,706
Computers — 0.1%
Dell International LLC/EMC Corp.
8.100% 7/15/36		450,000		526,481
Distribution & Wholesale — 0.1%
LKQ Corp.
5.750% 6/15/28 (a)		900,000		897,073
Diversified Financial Services — 3.5%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
3.300% 1/30/32		4,560,000		3,730,530
Antares Holdings LP
2.750% 1/15/27 (a)		985,000		809,265
3.950% 7/15/26 (a)		2,725,000		2,391,810
8.500% 5/18/25 (a)		1,185,000		1,158,358
Ares Finance Co. III LLC 5 yr. CMT + 3.237%
4.125% VRN 6/30/51 (a)		1,875,000		1,370,036
Ares Finance Co. LLC
4.000% 10/08/24 (a)		2,380,000		2,281,841
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		2,970,000		2,504,000
3.250% 2/15/27 (a)		1,945,000		1,732,808
4.250% 4/15/26 (a)		3,296,000		3,070,604
5.500% 1/15/26 (a)		205,000		198,625
Blue Owl Finance LLC
3.125% 6/10/31 (a)		3,455,000		2,628,860
4.125% 10/07/51 (a)		1,875,000		1,172,599
Charles Schwab Corp. SOFR + 2.500%
5.853% VRN 5/19/34		989,000		1,003,722

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)	$	1,919,474	$	1,756,991
				25,810,049
Electric — 1.2%
AEP Transmission Co. LLC
5.400% 3/15/53		623,000		640,253
American Electric Power Co., Inc.
5.625% 3/01/33		833,000		846,877
Cleveland Electric Illuminating Co.
5.950% 12/15/36		589,000		581,264
CMS Energy Corp.
4.700% 3/31/43		655,000		569,845
4.875% 3/01/44		700,000		634,792
NextEra Energy Capital Holdings, Inc. 5 yr. CMT + 2.547%
3.800% VRN 3/15/82		1,275,000		1,070,400
Pacific Gas & Electric Co.
2.500% 2/01/31		1,035,000		810,285
PG&E Wildfire Recovery Funding LLC
4.674% 12/01/53		1,200,000		1,124,176
Puget Energy, Inc.
2.379% 6/15/28		1,100,000		948,672
Vistra Operations Co. LLC
5.125% 5/13/25 (a)		1,550,000		1,511,182
				8,737,746
Electronics — 0.3%
Trimble, Inc.
6.100% 3/15/33		1,883,000		1,907,912
Entertainment — 0.3%
Warnermedia Holdings, Inc.
4.279% 3/15/32		2,080,000		1,844,701
Food — 0.8%
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
3.625% 1/15/32 (a)		4,750,000		3,854,340
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		1,555,000		1,149,105
3.000% 10/15/30 (a)		1,208,000		947,140
				5,950,585
Gas — 0.4%
CenterPoint Energy Resources Corp.
6.625% 11/01/37		1,500,000		1,559,787
NiSource, Inc.
4.800% 2/15/44		1,350,000		1,224,657
				2,784,444
Hand & Machine Tools — 0.3%
Regal Rexnord Corp.
6.050% 4/15/28 (a)		1,880,000		1,866,290
Health Care – Services — 0.2%
HCA, Inc.
5.900% 6/01/53		1,515,000		1,500,832

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Insurance — 6.3%
Allianz SE 5 yr. CMT + 2.973%
3.500% VRN (a) (c)	$	4,400,000	$	3,632,091
Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53		3,220,000		3,168,703
AmTrust Financial Services, Inc.
6.125% 8/15/23		4,330,000		4,299,402
Ascot Group Ltd.
4.250% 12/15/30 (a)		2,215,000		1,701,049
Athene Global Funding
2.673% 6/07/31 (a)		3,080,000		2,390,738
AXIS Specialty Finance LLC 5 yr. CMT + 3.186%
4.900% VRN 1/15/40		1,670,000		1,331,288
Brighthouse Financial, Inc.
4.700% 6/22/47		2,650,000		2,028,033
Brown & Brown, Inc.
4.200% 3/17/32		1,198,000		1,075,836
Corebridge Financial, Inc. 5 yr. CMT + 3.846%
6.875% VRN 12/15/52		3,169,000		3,037,455
Enstar Finance LLC 5 yr. CMT + 5.468%
5.750% VRN 9/01/40		2,700,000		2,327,264
Enstar Group Ltd.
3.100% 9/01/31		1,546,000		1,212,313
4.950% 6/01/29		725,000		675,135
Equitable Holdings, Inc. 5 yr. CMT + 4.736%
4.950% VRN (c)		206,000		191,312
Fairfax Financial Holdings Ltd.
5.625% 8/16/32		845,000		816,254
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		4,161,000		3,132,553
5 yr. CMT + 3.796% 4.700% VRN 10/15/51 (a)		3,580,000		2,537,508
Hanwha Life Insurance Co. Ltd. 5 yr. CMT + 1.850%
3.379% VRN 2/04/32 (a)		2,585,000		2,313,411
Hill City Funding Trust
4.046% 8/15/41 (a)		5,080,000		3,461,657
Liberty Mutual Group, Inc. 5 yr. CMT + 3.315%
4.125% VRN 12/15/51 (a)		1,225,000		962,605
MetLife Capital Trust IV
7.875% 12/15/67 (a)		925,000		968,233
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		4,980,000		3,868,759
4.450% 5/12/27 (a)		80,000		73,712
4.750% 4/08/32 (a)		90,000		75,236
USF&G Capital I
8.500% 12/15/45 (a)		1,015,000		1,116,944
				46,397,491
Investment Companies — 1.3%
Ares Capital Corp.
2.150% 7/15/26		2,275,000		1,972,593
BlackRock TCP Capital Corp.
3.900% 8/23/24		1,137,000		1,096,823
Blackstone Private Credit Fund
1.750% 9/15/24		370,000		347,198
2.625% 12/15/26		3,660,000		3,113,918
Golub Capital BDC, Inc.
2.500% 8/24/26		1,165,000		1,007,490

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
OWL Rock Core Income Corp.
4.700% 2/08/27	$	2,025,000	$	1,837,529
				9,375,551
Media — 0.8%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.125% 5/01/27 (a)		2,025,000		1,885,771
Charter Communications Operating LLC/Charter Communications Operating Capital
3.900% 6/01/52		750,000		490,773
6.484% 10/23/45		1,905,000		1,790,925
Discovery Communications LLC
4.000% 9/15/55		1,186,000		788,279
4.650% 5/15/50		705,000		537,036
Time Warner Cable LLC
6.750% 6/15/39		655,000		629,506
				6,122,290
Oil & Gas — 2.1%
BP Capital Markets PLC 5 yr. CMT + 4.398%
4.875% VRN (c)		1,540,000		1,399,860
EQT Corp.
3.900% 10/01/27		1,870,000		1,728,852
7.000% STEP 2/01/30		1,965,000		2,057,414
Ovintiv, Inc.
6.500% 8/15/34		1,110,000		1,112,390
6.500% 2/01/38		530,000		519,609
7.100% 7/15/53		1,864,000		1,918,730
Patterson-UTI Energy, Inc.
3.950% 2/01/28 (b)		2,415,000		2,164,002
5.150% 11/15/29		1,350,000		1,222,956
Petroleos Mexicanos
5.350% 2/12/28		925,000		761,656
6.375% 1/23/45		640,000		393,087
6.500% 3/13/27		295,000		262,470
6.625% 6/15/38		202,000		134,873
Santos Finance Ltd.
3.649% 4/29/31 (a)		1,800,000		1,494,339
				15,170,238
Oil & Gas Services — 0.3%
NOV, Inc.
3.600% 12/01/29		1,420,000		1,261,304
3.950% 12/01/42		1,778,000		1,304,453
				2,565,757
Pharmaceuticals — 0.9%
AbbVie, Inc.
4.700% 5/14/45		815,000		744,611
Cigna Group
4.800% 7/15/46		1,105,000		1,013,727
CVS Health Corp.
5.050% 3/25/48		370,000		341,045
6.125% 9/15/39		895,000		928,636
CVS Pass-Through Trust
5.926% 1/10/34 (a)		1,533,243		1,454,346

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Utah Acquisition Sub, Inc.
5.250% 6/15/46	$	2,300,000	$	1,813,280
				6,295,645
Pipelines — 1.6%
Energy Transfer LP
6.125% 12/15/45		1,235,000		1,173,321
3 mo. USD LIBOR + 4.028% 9.349% VRN (b) (c)		2,635,000		2,364,912
EnLink Midstream Partners LP
4.850% 7/15/26		996,000		961,140
5.450% 6/01/47		1,150,000		945,306
Enterprise Products Operating LLC 3 mo. USD Term SOFR + 3.295%
5.250% VRN 8/16/77		2,550,000		2,229,868
Plains All American Pipeline LP 3 mo. USD LIBOR + 4.110%
9.431% VRN (c)		2,590,000		2,305,433
Plains All American Pipeline LP/PAA Finance Corp.
4.700% 6/15/44		1,525,000		1,189,656
6.650% 1/15/37		475,000		476,506
				11,646,142
Private Equity — 0.4%
Apollo Management Holdings LP 5 yr. CMT + 3.266%
4.950% VRN 1/14/50 (a)		1,970,000		1,649,875
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		920,000		626,546
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		1,135,000		728,097
				3,004,518
Real Estate Investment Trusts (REITS) — 3.0%
Broadstone Net Lease LLC
2.600% 9/15/31		2,050,000		1,468,886
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		2,675,000		1,962,383
GLP Capital LP/GLP Financing II, Inc.
5.750% 6/01/28		1,150,000		1,125,120
Host Hotels & Resorts LP
2.900% 12/15/31		640,000		503,142
3.500% 9/15/30		2,756,000		2,334,629
Kimco Realty OP LLC
4.125% 12/01/46		855,000		633,323
4.450% 9/01/47		1,055,000		854,683
Omega Healthcare Investors, Inc.
3.375% 2/01/31		1,800,000		1,427,737
Piedmont Operating Partnership LP
2.750% 4/01/32		1,155,000		777,677
Rexford Industrial Realty LP
2.125% 12/01/30		1,175,000		926,921
Service Properties Trust
4.950% 10/01/29		1,445,000		1,121,085
Spirit Realty LP
2.700% 2/15/32		715,000		546,842
3.200% 1/15/27		425,000		382,411
3.400% 1/15/30		490,000		416,048
4.000% 7/15/29		2,405,000		2,115,483

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
STORE Capital Corp.
4.500% 3/15/28	$	1,050,000	$	916,976
4.625% 3/15/29		1,575,000		1,325,864
WEA Finance LLC
2.875% 1/15/27 (a)		2,150,000		1,851,380
WEA Finance LLC/Westfield U.K. & Europe Finance PLC
3.750% 9/17/24 (a)		1,575,000		1,487,293
				22,177,883
Retail — 0.1%
Advance Auto Parts, Inc.
5.950% 3/09/28		1,014,000		1,000,551
Software — 0.4%
Electronic Arts, Inc.
2.950% 2/15/51		1,150,000		777,946
Microsoft Corp.
2.921% 3/17/52		1,560,000		1,160,589
Oracle Corp.
6.900% 11/09/52		691,000		775,556
				2,714,091
Telecommunications — 1.9%
AT&T, Inc.
3.550% 9/15/55		4,675,000		3,272,807
British Telecommunications PLC
9.625% STEP 12/15/30		3,070,000		3,777,236
Crown Castle Towers LLC
4.241% 7/15/48 (a)		1,750,000		1,623,208
Deutsche Telekom International Finance BV
8.750% STEP 6/15/30		615,000		736,514
Sprint Capital Corp.
8.750% 3/15/32		3,150,000		3,807,112
Vodafone Group PLC
4.250% 9/17/50		1,175,000		943,333
				14,160,210
Toys, Games & Hobbies — 0.1%
Hasbro, Inc.
3.900% 11/19/29		1,050,000		948,822
Venture Capital — 0.6%
Hercules Capital, Inc.
2.625% 9/16/26		3,662,000		3,133,527
3.375% 1/20/27		1,415,000		1,225,757
				4,359,284
TOTAL CORPORATE DEBT (Cost $318,635,598)				280,364,914
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 28.8%
Commercial Mortgage-Backed Securities — 8.7%
BANK, Series 2020-BN30, Class MCDF,
3.016% VRN 12/15/53 (d)		3,165,000		1,633,307
BBCMS Mortgage Trust
Series 2018-CHRS, Class B, 4.409% VRN 8/05/38 (a) (d)		2,200,000		1,781,016
Series 2018-CHRS, Class C, 4.409% VRN 8/05/38 (a) (d)		1,590,000		1,224,494

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2018-CHRS, Class D, 4.409% VRN 8/05/38 (a) (d)	$	1,220,000	$	905,070
Benchmark Mortgage Trust
Series 2021-B23, Class 360A, 2.852% VRN 2/15/54 (a) (d)		3,150,000		2,149,725
Series 2021-B23, Class 360B, 2.852% VRN 2/15/54 (a) (d)		4,800,000		2,924,405
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (d)		3,100,000		1,982,585
BGME Trust
Series 2021-VR, Class C, 3.094% VRN 1/10/43 (a) (d)		16,248,000		12,598,184
Series 2021-VR, Class D, 3.094% VRN 1/10/43 (a) (d)		3,790,000		2,780,909
BMO Mortgage Trust, Series 2023-C4, Class A5,
5.117% VRN 2/15/56 (d)		1,300,000		1,293,978
BX Commercial Mortgage Trust, Series 2021-VOLT, Class E, 1 mo. USD LIBOR + 2.000%
7.193% FRN 9/15/36 (a)		5,343,000		5,042,661
BX Trust, Series 2023-LIFE, Class C
5.884% 2/15/28 (a)		1,500,000		1,412,582
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		1,259,000		915,864
COLEM Mortgage Trust, Series 2022-HLNE,
2.543% VRN 4/12/42 (a) (d)		1,900,000		1,430,118
COMM Mortgage Trust
Series 2015-CR23, Class B, 4.183% VRN 5/10/48 (d)		1,200,000		1,065,128
Series 2015-CR23, Class C, 4.443% VRN 5/10/48 (d)		1,050,000		881,074
Credit Suisse Mortgage Capital Certificates, Series 2019-ICE4, Class E, 1 mo. USD LIBOR + 2.150%
7.343% FRN 5/15/36 (a)		748,139		731,315
DROP Mortgage Trust
Series 2021-FILE, Class C, 1 mo. USD LIBOR + 2.250% 7.443% FRN 10/15/43 (a)		3,365,000		2,835,646
Series 2021-FILE, Class D, 1 mo. USD LIBOR + 2.750% 7.943% FRN 10/15/43 (a)		1,162,000		979,169
GS Mortgage Securities Trust, Series 2019-GC39, Class C,
4.005% VRN 5/10/52 (d)		1,357,000		1,060,151
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD Term SOFR + 1.864%
7.012% FRN 8/15/38 (a)		3,077,756		2,813,775
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.950%
7.143% FRN 5/15/36 (a)		1,730,000		1,702,444
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
7.012% FRN 3/15/38 (a)		2,505,591		2,394,520
MFT Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		1,185,000		848,851
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (d)		1,278,000		877,697
MKT Mortgage Trust
Series 2020-525M, Class D, 3.039% VRN 2/12/40 (a) (d)		595,000		331,979
Series 2020-525M, Class E, 3.039% VRN 2/12/40 (a) (d)		1,220,000		582,541
Ready Capital Commercial Mortgage Financing LLC, 1 mo. USD Term SOFR + 3.198%
8.198% FRN 5/25/38 (a)		2,000,000		1,990,799
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
7.293% FRN 7/15/39 (a)		4,879,000		3,671,180
Wells Fargo Commercial Mortgage Trust
Series 2018-C45, Class B, 4.556% 6/16/51		390,000		330,467
Series 2021-FCMT, Class B, 1 mo. USD LIBOR + 1.850% 7.043% FRN 5/15/31 (a)		3,000,000		2,781,775
				63,953,409

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Other Asset-Backed Securities — 14.8%
522 Funding CLO Ltd., Series 2018-3A, Class CR, 3 mo. USD LIBOR + 2.050%
7.300% FRN 10/20/31 (a)	$	1,250,000	$	1,203,799
AASET Trust
Series 2020-1A, Class A, 3.351% 1/16/40 (a)		987,237		828,644
Series 2021-2A, Class B, 3.538% 1/15/47 (a)		999,230		750,860
Anchorage Capital CLO Ltd., Series 2016-9A, Class CR2, 3 mo. USD LIBOR + 2.250%
7.510% FRN 7/15/32 (a)		830,000		797,053
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. USD Term SOFR + 2.550%
7.607% FRN 4/26/35 (a)		1,750,000		1,750,555
Apidos CLO XXV, Series 2016-25A, Class A2R, 3 mo. USD LIBOR + 1.700%
6.950% FRN 10/20/31 (a)		2,610,000		2,558,920
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.302% FRN 4/18/35 (a)		1,000,000		972,880
Ballyrock CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 3.150%
8.529% FRN 11/20/30 (a)		800,000		768,862
Benefit Street Partners CLO V-B Ltd., Series 2018-5BA, Class A1A, 3 mo. USD LIBOR + 1.090%
6.340% FRN 4/20/31 (a)		1,920,000		1,904,077
BRE Grand Islander Timeshare Issuer LLC, Series 2017-1A, Class A
2.940% 5/25/29 (a)		184,792		179,958
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)		756,192		695,940
Canyon Capital CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 2.150%
7.410% FRN 10/15/34 (a)		800,000		757,000
CARS-DB4 LP
Series 2020-1A, Class A3, 3.250% 2/15/50 (a)		554,951		480,041
Series 2020-1A, Class A6, 3.810% 2/15/50 (a)		487,967		408,834
Castlelake Aircraft Structured Trust, Series 2019-1A, Class A
3.967% 4/15/39 (a)		620,287		550,661
CBAM Ltd., Series 2018-6A, Class B1R, 3 mo. USD Term SOFR + 2.362%
7.348% FRN 1/15/31 (a)		1,200,000		1,183,843
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
6.230% FRN 4/20/31 (a)		1,000,000		991,488
CIFC Funding Ltd., Series 2021-1A, Class A1, 3 mo. USD LIBOR + 1.110%
6.365% FRN 4/25/33 (a)		2,000,000		1,980,962
Eaton Vance CLO Ltd.
Series 2018-1A, Class B, 3 mo. USD LIBOR + 1.750% 7.010% FRN 10/15/30 (a)		1,700,000		1,664,587
Series 2020-1A, Class CR, 3 mo. USD LIBOR + 2.050% 7.310% FRN 10/15/34 (a)		400,000		384,872
Elmwood CLO 19 Ltd., Series 2022-6A, Class A, 3 mo. USD Term SOFR + 2.200%
7.186% FRN 10/17/34 (a)		2,000,000		2,001,092
Elmwood CLO III Ltd., Series 2019-3A, Class BR, 3 mo. USD LIBOR + 1.650%
6.900% FRN 10/20/34 (a)		1,300,000		1,265,294
Elmwood CLO IV Ltd., Series 2020-1A, Class A, 3 mo. USD LIBOR + 1.240%
6.500% FRN 4/15/33 (a)		1,000,000		993,610

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Flexential Issuer
Series 2021-1A, Class B, 3.720% 11/27/51 (a)	$	4,000,000	$	3,390,480
Series 2021-1A, Class C, 6.930% 11/27/51 (a)		4,000,000		3,402,999
Goldentree Loan Management U.S. CLO Ltd., Series 2019-5A, Class CR, 3 mo. USD LIBOR + 2.050%
7.300% FRN 10/20/32 (a)		800,000		767,435
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		2,202,236		1,822,547
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		852,471		743,012
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		417,675		367,212
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		865,127		756,455
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (d)		1,094,741		973,313
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		372,166		324,952
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		413,433		353,879
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		123,386		106,105
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		390,430		345,394
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		99,192		87,365
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		718,674		653,075
Highbridge Loan Management Ltd., Series 13A-18, Class C, 3 mo. USD LIBOR + 2.150%
7.410% FRN 10/15/30 (a)		1,000,000		956,589
Horizon Aircraft Finance I Ltd., Series 2018-1, Class A
4.458% 12/15/38 (a)		970,428		836,992
Horizon Aircraft Finance II Ltd., Series 2019-1, Class A
3.721% 7/15/39 (a)		1,235,811		1,055,365
Horizon Aircraft Finance III Ltd., Series 2019-2, Class A
3.425% 11/15/39 (a)		3,294,438		2,602,606
HPS Loan Management Ltd., Series 2023-18A, Class B, 3 mo. USD Term SOFR + 2.950%
8.212% FRN 7/20/36 (a)		1,000,000		1,000,000
KREF Ltd.
Series 2021-FL2, Class B, 1 mo. USD LIBOR + 1.650% 6.808% FRN 2/15/39 (a)		3,500,000		3,295,546
Series 2021-FL2, Class C, 1 mo. USD LIBOR + 2.000% 7.158% FRN 2/15/39 (a)		5,800,000		5,362,553
Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200% 7.358% FRN 2/15/39 (a)		3,200,000		2,933,114
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		1,663,045		1,369,546
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		1,262,503		1,061,311
Madison Park Funding Ltd.
Series 2018-28A, Class B, 3 mo. USD LIBOR + 1.600% 6.860% FRN 7/15/30 (a)		2,090,000		2,048,959
Series 2018-32A, Class CR, 3 mo. USD LIBOR + 2.000% 7.273% FRN 1/22/31 (a)		1,750,000		1,685,234
Series 2018-29A, Class C, 3 mo. USD LIBOR + 2.200% 7.462% FRN 10/18/30 (a)		680,000		660,786
Mariner Finance Issuance Trust
Series 2021-AA, Class B, 2.330% 3/20/36 (a)		1,771,000		1,455,456
Series 2021-AA, Class C, 2.960% 3/20/36 (a)		835,000		685,301
Mosaic Solar Loans LLC
Series 2017-2A, Class A, 3.820% 6/22/43 (a)		322,815		293,826
Series 2018-1A, Class A, 4.010% 6/22/43 (a)		146,074		130,787
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		139,982		131,834
Neuberger Berman Loan Advisers CLO Ltd., Series 2015-45A, Class B, 3 mo. USD LIBOR + 1.650%
6.901% FRN 10/14/35 (a)		1,350,000		1,313,196

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
New Residential Advance Receivables Trust Advance Receivables Backed, Series 2020-T1, Class ET1
5.467% 8/15/53 (a)	$	2,495,000	$	2,472,790
Octagon Investment Partners 39 Ltd., Series 2018-3A, Class C, 3 mo. USD LIBOR + 2.200%
7.450% FRN 10/20/30 (a)		1,180,000		1,144,547
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD LIBOR + 1.850%
7.100% FRN 10/20/34 (a)		550,000		528,678
Pioneer Aircraft Finance Ltd., Series 2019-1, Class A
3.967% 6/15/44 (a)		1,426,636		1,238,263
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD LIBOR + 1.170%
6.469% FRN 10/30/34 (a)		2,000,000		1,958,932
Rad CLO 15 Ltd., Series 2021-15A, Class C, 3 mo. USD LIBOR + 2.050%
7.300% FRN 1/20/34 (a)		1,000,000		951,186
Regatta XIV Funding Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.850%
7.105% FRN 10/25/31 (a)		1,030,000		1,008,756
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD LIBOR + 1.140%
6.400% FRN 10/15/35 (a)		1,000,000		982,892
RR 7 Ltd., Series 2019-7A, Class A2B, 3 mo. USD Term SOFR + 1.850%
6.836% FRN 1/15/37 (a)		750,000		723,151
Sierra Timeshare Receivables Funding LLC
Series 2021-1A, Class D, 3.170% 11/20/37 (a)		638,016		575,774
Series 2018-3A, Class D, 5.200% 9/20/35 (a)		277,938		265,309
Silver Point CLO 2 Ltd., Series 2023-2A, Class A1, 3 mo. USD Term SOFR + 2.250%
7.332% FRN 4/20/35 (a)		2,000,000		2,002,394
Steele Creek CLO Ltd., Series 2018-2A, Class C, 3 mo. USD LIBOR + 2.300%
7.645% FRN 8/18/31 (a)		1,660,000		1,573,871
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD LIBOR + 1.200%
6.350% FRN 11/25/35 (a)		423,555		410,375
Structured Receivables Finance LLC, Series 2010-B, Class A
3.730% 8/15/36 (a)		79,488		76,099
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		562,471		515,289
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		1,619,415		1,410,195
Symphony CLO Ltd., Series 2023-30A, Class B, 3 mo. USD Term SOFR + 2.650%
7.718% FRN 4/20/35 (a)		1,875,000		1,875,645
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.700%
6.950% FRN 1/20/31 (a)		2,440,000		2,352,414
Thrust Engine Leasing DAC
Series 2021-1A, Class A, 4.163% 7/15/40 (a)		3,348,840		2,809,777
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,520,463		1,123,668
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		1,043,229		774,132
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD LIBOR + 1.650%
6.900% FRN 10/20/32 (a)		1,100,000		1,074,601
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD LIBOR + 1.280%
6.530% FRN 4/20/33 (a)		4,200,000		4,157,660
Vivint Solar Financing V LLC, Series 2018-1A, Class B
7.370% 4/30/48 (a)		1,747,817		1,599,536

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Voya CLO Ltd.
Series 2021-3A, Class B, 3 mo. USD LIBOR + 1.600% 6.850% FRN 1/20/35 (a)	$	500,000	$	481,410
Series 2015-3A, Class A3R, 3 mo. USD Term SOFR + 1.962% 7.010% FRN 10/20/31 (a)		1,500,000		1,457,901
WAVE LLC, Series 2019-1A, Class A
3.597% 9/15/44 (a)		3,859,063		3,160,959
WAVE Trust
Series 2017-1A, Class A, 3.844% 11/15/42 (a)		287,185		228,324
Series 2017-1A, Class C, 6.656% 11/15/42 (a)		2,132,366		238,164
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		961,973		797,495
				108,017,243
Student Loans Asset-Backed Securities — 2.8%
College Ave Student Loans LLC
Series 2019-A, Class B, 3.810% 12/28/48 (a)		1,482,795		1,351,098
Series 2019-A, Class C, 4.460% 12/28/48 (a)		991,185		899,899
Education Loan Asset-Backed Trust I
Series 2003-1, Class A2, 0.000% FRN 2/01/43 (a) (d)		1,300,000		1,201,576
Series 2003-2, Class 2A1, 0.000% FRN 8/01/43 (a) (d)		1,950,000		1,811,819
Series 2013-1, Class B1, 1 mo. USD LIBOR + 1.000% 6.150% FRN 11/25/33 (a)		621,604		600,489
Higher Education Funding I
Series 2004-1, Class B2, 0.000% FRN 1/01/44 (a) (d)		600,000		525,417
Series 2004-1, Class B1, 4.161% FRN 1/01/44 (a) (d)		600,000		541,399
Laurel Road Prime Student Loan Trust, Series 2017-B, Class BFX
3.020% 8/25/42 (a)		538,731		480,634
Navient Student Loan Trust
Series 2018-EA, Class B, 4.440% 12/15/59 (a)		730,000		661,650
Series 2015-3, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 10/25/58		1,200,000		1,085,532
Nelnet Student Loan Trust
Series 2019-5, Class B, 3.450% 10/25/67 (a)		2,850,000		2,239,834
Series 2014-3A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 10/25/50 (a)		975,000		863,871
Series 2015-2A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 5/26/54 (a)		1,130,000		1,107,474
Series 2014-5A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 5/26/54 (a)		1,300,000		1,153,281
Series 2015-3A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 6/25/54 (a)		1,100,000		1,013,802
SLC Student Loan Trust, Series 2005-1, Class B, 3 mo. USD LIBOR + .200%
5.521% FRN 2/15/45		977,225		864,557
SLM Student Loan Trust
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.465% FRN 10/25/40		1,498,341		1,404,718
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 5.565% FRN 1/25/55		1,009,254		928,688
SoFi Alternative Trust, Series 2019-C, Class PT,
5.569% VRN 1/25/45 (a) (d)		2,109,796		2,013,649
				20,749,387
Whole Loan Collateral Collateralized Mortgage Obligations — 2.5%
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
4.020% VRN 8/25/34 (d)		27,236		26,174
Credit Suisse Mortgage Trust, Series 2021-NQM3, Class M1,
2.317% VRN 4/25/66 (a) (d)		1,670,000		1,007,457
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (d)		4,579,598		3,565,468

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
New Residential Mortgage Loan Trust, Series 2021-INV1, Class A4,
2.500% VRN 6/25/51 (a) (d)	$	2,739,522	$	2,122,595
NewRez Warehouse Securitization Trust, Series 2021-1, Class D, 1 mo. USD LIBOR + 1.400%
6.550% FRN 5/25/55 (a)		2,894,667		2,854,158
NMLT Trust, Series 2021-INV1, Class M1,
2.711% VRN 5/25/56 (a) (d)		3,723,000		2,517,774
STAR Trust, Series 2021-1, Class M1,
2.363% VRN 5/25/65 (a) (d)		5,273,000		3,842,496
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (d)		1,840,000		1,185,004
Verus Securitization Trust, Series 2021-R3, Class M1,
2.411% VRN 4/25/64 (a) (d)		1,491,000		1,159,292
Wells Fargo Mortgage-Backed Securities Trust, Series 2019-1, Class A1,
3.935% VRN 11/25/48 (a) (d)		36,932		34,402
				18,314,820
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $245,509,820)				211,034,859
SOVEREIGN DEBT OBLIGATION — 0.2%
Mexico Government International Bonds
4.750% 3/08/44		1,778,000		1,518,510
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $1,789,364)				1,518,510
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 30.6%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. Series 2178, Class PB 7.000% 8/15/29		56,966		57,786
Pass-Through Securities — 30.6%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		4,373,642		3,598,287
Pool #RA4255 2.000% 1/01/51		9,079,332		7,483,942
Pool #RA5576 2.500% 7/01/51		7,400,860		6,331,276
Pool #SD0905 3.000% 3/01/52		3,585,368		3,167,981
Pool #RA2483 3.500% 6/01/50		5,041,499		4,629,822
Pool #Z40047 4.000% 10/01/41		68,704		66,044
Pool #SD1523 4.000% 8/01/52		5,039,693		4,759,905
Pool #SD1603 4.000% 9/01/52		3,145,577		2,954,627
Federal National Mortgage Association
Pool #CB0414 2.500% 5/01/51		6,438,723		5,469,958
Pool #FM8596 2.500% 9/01/51		2,304,225		1,969,774
Pool #MA4548 2.500% 2/01/52		6,616,814		5,615,051
Pool #FS3035 2.500% 4/01/52		8,211,655		7,019,761
Pool #MA3029 3.000% 6/01/32		1,619,873		1,534,849
Pool #MA3090 3.000% 8/01/32		548,929		520,117
Pool #FS1075 3.000% 3/01/52		3,629,170		3,216,197
Pool #CB3304 3.000% 4/01/52		5,477,433		4,854,141
Pool #CB3305 3.000% 4/01/52		6,498,608		5,755,052
Pool #AS1304 3.500% 12/01/28		424,696		409,597
Pool #MA1356 3.500% 2/01/43		3,413,270		3,148,759
Pool #CA6096 3.500% 6/01/50		6,757,132		6,192,691
Pool #FM4017 3.500% 8/01/50		375,971		345,152
Pool #CB3842 3.500% 6/01/52		10,351,115		9,481,607

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #CA1909 4.500% 6/01/48	$	2,126,826	$	2,079,249
Pool #CB3866 4.500% 6/01/52		5,730,121		5,529,865
Pool #CB4129 4.500% 7/01/52		5,076,072		4,879,639
Pool #AD6437 5.000% 6/01/40		201,635		202,445
Pool #AD6996 5.000% 7/01/40		1,297,798		1,303,611
Pool #AL8173 5.000% 2/01/44		427,230		429,816
Pool #775539 1 yr. USD LIBOR + 1.641% 5.391% FRN 5/01/34		39,970		40,459
Government National Mortgage Association
Pool #781038 6.500% 5/15/29		17,642		17,962
Pool #781468 6.500% 7/15/32		1,408		1,441
Pool #781496 6.500% 9/15/32		6,496		6,628
Pool #380866 7.000% 3/15/24		36		36
Pool #781124 7.000% 12/15/29		2,425		2,468
Pool #781319 7.000% 7/15/31		48,128		49,356
Pool #581417 7.000% 7/15/32		7,839		7,963
Pool #565982 7.000% 7/15/32		10,725		11,106
Pool #357262 7.500% 9/15/23		6		6
Pool #441009 8.000% 11/15/26		352		357
Pool #522777 8.000% 12/15/29		2,953		3,034
Pool #523043 8.000% 3/15/30		102		105
Pool #529134 8.000% 3/15/30		1,125		1,172
Pool #477036 8.000% 4/15/30		118		122
Pool #503157 8.000% 4/15/30		9,592		9,993
Pool #528714 8.000% 4/15/30		891		930
Pool #544640 8.000% 11/15/30		7,780		8,144
Pool #531298 8.500% 8/15/30		509		529
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		2,672,852		2,412,156
Pool #MA6283 3.000% 11/20/49		4,833,861		4,358,993
Pool #MA6409 3.000% 1/20/50		5,019,456		4,526,355
Pool #MA4321 3.500% 3/20/47		2,994,327		2,806,070
Government National Mortgage Association II TBA
2.500% 7/20/53 (f)		3,900,000		3,375,138
3.000% 7/20/53 (f)		4,100,000		3,662,751
3.500% 7/20/53 (f)		5,280,000		4,872,008
4.500% 7/20/53 (f)		2,000,000		1,929,729
Uniform Mortgage-Backed Security TBA
2.500% 7/13/53 (f)		28,625,000		24,258,565
3.000% 7/13/53 (f)		11,225,000		9,876,244
3.500% 7/13/53 (f)		2,150,000		1,958,347
4.000% 7/13/53 (f)		16,075,000		15,081,612
4.500% 7/13/53 (f)		16,825,000		16,167,778
4.500% 7/18/38 (f)		7,800,000		7,642,786
5.000% 7/18/38 (f)		7,700,000		7,645,261
5.000% 7/13/53 (f)		10,475,000		10,262,636
				223,947,455
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $236,248,666)				224,005,241
U.S. TREASURY OBLIGATIONS — 1.6%
U.S. Treasury Bonds & Notes — 1.6%
U.S. Treasury Bonds
2.250% 8/15/49 (g)		16,200,000		11,764,305

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
TOTAL U.S. TREASURY OBLIGATIONS (Cost $12,169,607)			$	11,764,305
TOTAL BONDS & NOTES (Cost $814,353,055)				728,687,829
TOTAL LONG-TERM INVESTMENTS (Cost $814,353,055)				728,687,829
SHORT-TERM INVESTMENTS — 13.0%
Commercial Paper — 11.9%
AT&T, Inc.
5.998% 11/21/23 (a)	$	6,000,000		5,864,016
6.119% 3/19/24 (a)		7,000,000		6,700,786
Avery Dennison Corp.
5.795% 10/24/23 (a)		3,000,000		2,944,832
BAT International Finance PLC
6.183% 7/06/23 (a)		4,000,000		3,996,527
Bayer Corp.
6.176% 9/14/23 (a)		3,000,000		2,965,756
6.217% 9/19/23 (a)		6,000,000		5,926,844
6.218% 9/19/23 (a)		6,500,000		6,420,747
CRH America Finance, Inc.
5.821% 10/05/23 (a)		2,000,000		1,969,456
EIDP, Inc.
5.981% 7/05/23 (a)		4,000,000		3,997,074
Entergy Corp.
5.883% 7/06/23 (a)		5,000,000		4,995,643
Northrop Grumman Corp.
5.759% 8/17/23		10,000,000		9,927,040
Suncor Energy, Inc.
5.974% 11/30/23 (a)		3,000,000		2,925,897
Tampa Electric Co.
5.654% 7/07/23 (a)		3,000,000		2,996,949
5.657% 7/05/23 (a)		10,000,000		9,992,740
TELUS Corp.
5.822% 10/26/23 (a)		11,000,000		10,793,690
TransCanada PipeLines Ltd.
5.675% 7/05/23 (a)		4,500,000		4,496,746
				86,914,743
Investment of Cash Collateral from Securities Loaned — 0.8%		Number of Shares
State Street Navigator Securities Lending Government Money Market Portfolio (h)		5,599,395		5,599,395
Repurchase Agreement — 0.3%		Principal Amount
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (i)	$	1,889,987		1,889,987
TOTAL SHORT-TERM INVESTMENTS (Cost $94,411,176)				94,404,125

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount	Value
TOTAL INVESTMENTS — 112.5% (Cost $908,764,231) (j)		$	823,091,954
Other Assets/(Liabilities) — (12.5)%			(91,321,389)
NET ASSETS — 100.0%		$	731,770,565

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, 2023, the aggregate market value of these securities amounted to $372,432,209 or 50.89% of net assets.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $5,487,553 or 0.75% of net assets. (Note 2).

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

(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, 2023.

(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. (Note 2).

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

(i) Maturity value of $1,890,226. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $1,927,873.

(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	9/20/23		68	$	8,605,005	$	24,620
U.S. Treasury Ultra Bond	9/20/23		335		45,178,980		454,301
U.S. Treasury Note 2 Year	9/29/23		329		67,811,033		(910,939)
U.S. Treasury Note 5 Year	9/29/23		200		21,846,288		(427,538)
						$	(859,556)
Short
U.S. Treasury Ultra 10 Year	9/20/23		95	$	(11,366,817)	$	115,254

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation (Depreciation)

CDX.NA.IG Series 39†

1.000%

Quarterly

6/20/28

USD

112,000,000

$

(1,673,728)

$

(585,234)

$

(1,088,494)

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 3.965%			Annually		6/23/25	USD	51,000,000	$	(822,661)	$	—	$	(822,661)
12-Month USD SOFR	Annually		Fixed 3.815%			Annually		6/30/25	USD	49,000,000		(925,224)		—		(925,224)
12-Month USD SOFR	Annually		Fixed 3.749%			Annually		7/14/25	USD	49,141,000		(962,922)		—		(962,922)
12-Month USD SOFR	Annually		Fixed 3.618%	��		Annually		8/07/25	USD	50,000,000		(1,050,689)		—		(1,050,689)
Fixed 3.293%	Annually		12-Month USD SOFR			Annually		6/23/33	USD	11,000,000		240,960		—		240,960
Fixed 3.223%	Annually		12-Month USD SOFR			Annually		6/30/33	USD	11,440,000		316,596		—		316,596
Fixed 3.086%	Annually		12-Month USD SOFR			Annually		7/14/33	USD	11,394,000		436,732		—		436,732
Fixed 3.107%	Annually		12-Month USD SOFR			Annually		8/07/33	USD	11,104,000		391,977		—		391,977
											$	(2,375,231)	$	—	$	(2,375,231)

† Payment is based on a percentage of the index. Reference entities are a number of individual issuers comprising the index.

Currency Legend

USD U.S. Dollar

MassMutual Diversified Bond Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 0.7%
PREFERRED STOCK — 0.7%
Financial — 0.7%
Insurance — 0.7%
Equitable Holdings, Inc. 4.300%, Class C
4.300%		45,600	$	735,072
Selective Insurance Group, Inc. 4.600%, Class B
4.600%		18,825		308,165
				1,043,237
TOTAL PREFERRED STOCK (Cost $1,610,625)				1,043,237
TOTAL EQUITIES (Cost $1,610,625)				1,043,237
	Principal Amount
BONDS & NOTES — 93.5%
CORPORATE DEBT — 43.7%
Aerospace & Defense — 0.4%
Boeing Co.
5.930% 5/01/60	$	140,000		138,654
TransDigm, Inc.
5.500% 11/15/27		250,000		235,800
6.375% 6/15/26		225,000		222,077
				596,531
Agriculture — 0.6%
BAT Capital Corp.
4.758% 9/06/49		165,000		124,560
Imperial Brands Finance PLC
3.875% 7/26/29 (a)		545,000		479,997
Reynolds American, Inc.
5.850% 8/15/45		150,000		133,396
Viterra Finance BV
3.200% 4/21/31 (a) (b)		280,000		234,495
				972,448
Airlines — 0.3%
Alaska Airlines Pass-Through Trust, 2020-1 Class A,
4.800% 2/15/29 (a)		362,617		348,240

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27	$	58,509	$	54,872
				403,112
Auto Manufacturers — 0.3%
General Motors Co.
5.150% 4/01/38		230,000		204,694
5.200% 4/01/45		225,000		191,930
Nissan Motor Co. Ltd.
4.345% 9/17/27 (a)		128,000		116,417
				513,041
Auto Parts & Equipment — 0.1%
Lear Corp.
3.550% 1/15/52		305,000		203,483
Banks — 7.5%
Bank Hapoalim BM 5 yr. CMT + 2.155%
3.255% VRN 1/21/32 (a)		600,000		513,908
Bank of America Corp.
SOFR + .730% 0.810% VRN 10/24/24		425,000		417,932
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		380,000		290,712
5 yr. CMT + 2.000% 3.846% VRN 3/08/37		460,000		393,357
6.110% 1/29/37		190,000		200,377
7.750% 5/14/38		125,000		148,356
Bank of Nova Scotia 3 mo. USD LIBOR + 2.648%
7.846% VRN (c)		575,000		476,359
Barclays PLC
5 yr. CMT + 3.410% 4.375% VRN (c)		375,000		254,775
5 yr. USD Swap + 4.842% 7.750% VRN (c)		200,000		195,980
5 yr. CMT + 5.431% 8.000% VRN (c)		290,000		259,086
BNP Paribas SA
5 yr. CMT + 3.340% 4.625% VRN (a) (c)		375,000		267,656
5 yr. USD Swap + 4.149% 6.625% VRN (a) (c)		250,000		240,094
BPCE SA SOFR + 1.730%
3.116% VRN 10/19/32 (a)		450,000		347,322
Citigroup, Inc. 3 mo. USD LIBOR + 4.068%
9.341% VRN (c)		185,000		185,648
Danske Bank AS 7 yr. USD Swap + 3.896%
6.125% VRN (a) (c)		425,000		405,839
Discover Bank 5 yr. USD ICE Swap + 1.730%
4.682% VRN 8/09/28		468,000		427,896
Goldman Sachs Group, Inc.
5.150% 5/22/45		290,000		270,760
6.750% 10/01/37		165,000		177,465
HSBC Holdings PLC
6.500% 9/15/37		125,000		124,785
7.350% 11/27/32		415,000		435,400
Huntington Bancshares, Inc.
2.625% 8/06/24 (b)		225,000		215,237
3 mo. USD LIBOR + 2.880% 8.140% VRN (c)		510,000		433,956
ING Groep NV 5 yr. USD ICE Swap + 4.204%
6.750% VRN (a) (c)		275,000		261,938
JP Morgan Chase & Co.
3 mo. USD Term SOFR + 2.515% 2.956% VRN 5/13/31		235,000		201,501
4.950% 6/01/45		170,000		158,680

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Lloyds Banking Group PLC 5 yr. CMT + 3.913%
8.000% VRN (c)	$	605,000	$	552,758
Macquarie Bank Ltd. 5 yr. CMT + 1.700%
3.052% VRN 3/03/36 (a)		550,000		417,258
Mizrahi Tefahot Bank Ltd. 5 yr. CMT + 2.250%
3.077% VRN 4/07/31 (a)		1,225,000		1,067,980
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		280,000		212,447
SOFR + 1.485% 3.217% VRN 4/22/42		310,000		235,073
SOFR + 2.620% 5.297% VRN 4/20/37		185,000		175,046
Nordea Bank Abp 5 yr. CMT + 4.110%
6.625% VRN (a) (c)		275,000		259,267
SVB Financial Group
4.100% (c)		210,000		14,698
4.250% (c)		590,000		41,299
Toronto-Dominion Bank 5 yr. CMT + 4.075%
8.125% VRN 10/31/82		358,000		363,685
U.S. Bancorp SOFR + 2.260%
5.836% VRN 6/12/34		231,000		232,672
UBS Group AG
SOFR + .980% 1.305% VRN 2/02/27 (a)		550,000		480,517
SOFR + 3.340% 6.373% VRN 7/15/26 (a)		375,000		372,631
Wells Fargo & Co.
5.900% VRN (c) (d)		430,000		424,088
				12,154,438
Beverages — 0.6%
Anheuser-Busch InBev Worldwide, Inc.
8.200% 1/15/39		250,000		326,740
Bacardi Ltd.
5.150% 5/15/38 (a)		200,000		187,519
Molson Coors Beverage Co.
4.200% 7/15/46		366,000		303,066
5.000% 5/01/42		135,000		125,013
				942,338
Biotechnology — 0.1%
Amgen, Inc.
5.600% 3/02/43		211,000		211,639
Building Materials — 0.2%
Standard Industries, Inc.
4.375% 7/15/30 (a)		200,000		173,219
4.750% 1/15/28 (a)		151,000		140,617
				313,836
Chemicals — 0.7%
Alpek SAB de CV
3.250% 2/25/31 (a)		560,000		452,536
LYB International Finance III LLC
4.200% 5/01/50		325,000		247,877
Syngenta Finance NV
4.892% 4/24/25 (a)		500,000		489,398
				1,189,811

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Commercial Services — 0.0%
ERAC USA Finance LLC
7.000% 10/15/37 (a)	$	50,000	$	57,138
Computers — 0.4%
Dell International LLC/EMC Corp.
8.100% 7/15/36		100,000		116,996
8.350% 7/15/46		275,000		337,235
Leidos, Inc.
5.500% 7/01/33		226,000		211,222
				665,453
Distribution & Wholesale — 0.3%
H&E Equipment Services, Inc.
3.875% 12/15/28 (a)		600,000		519,468
Diversified Financial Services — 4.4%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
3.400% 10/29/33		935,000		750,993
Antares Holdings LP
2.750% 1/15/27 (a)		645,000		529,925
3.750% 7/15/27 (a)		605,000		506,162
8.500% 5/18/25 (a)		330,000		322,581
Ares Finance Co. III LLC 5 yr. CMT + 3.237%
4.125% VRN 6/30/51 (a)		360,000		263,047
Ares Finance Co. LLC
4.000% 10/08/24 (a)		375,000		359,534
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		375,000		316,161
3.250% 2/15/27 (a)		175,000		155,908
4.250% 4/15/26 (a)		485,000		451,833
4.375% 5/01/26 (a)		480,000		448,499
5.500% 1/15/26 (a)		135,000		130,802
BGC Partners, Inc.
4.375% 12/15/25		585,000		539,995
Blue Owl Finance LLC
3.125% 6/10/31 (a)		910,000		692,406
4.125% 10/07/51 (a)		375,000		234,520
Charles Schwab Corp. SOFR + 2.500%
5.853% VRN 5/19/34		211,000		214,141
Coinbase Global, Inc.
3.625% 10/01/31 (a)		593,000		350,365
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		662,078		606,033
OneMain Finance Corp.
4.000% 9/15/30 (b)		220,000		169,400
				7,042,305
Electric — 1.3%
Berkshire Hathaway Energy Co.
5.950% 5/15/37		120,000		123,574
Cleveland Electric Illuminating Co.
5.950% 12/15/36		175,000		172,702
CMS Energy Corp.
4.700% 3/31/43		115,000		100,049
4.875% 3/01/44		180,000		163,232

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Elwood Energy LLC
8.159% 7/05/26	$	56,936	$	46,403
Enel Finance International NV
6.000% 10/07/39 (a)		175,000		171,882
NextEra Energy Capital Holdings, Inc. 5 yr. CMT + 2.547%
3.800% VRN 3/15/82		580,000		486,927
Pacific Gas & Electric Co.
3.750% 7/01/28		320,000		286,713
4.300% 3/15/45		195,000		139,129
Virginia Electric & Power Co.
6.000% 1/15/36		100,000		104,391
Vistra Operations Co. LLC
5.125% 5/13/25 (a)		325,000		316,861
				2,111,863
Electronics — 0.1%
Trimble, Inc.
6.100% 3/15/33		203,000		205,686
Entertainment — 0.2%
Live Nation Entertainment, Inc.
5.625% 3/15/26 (a)		77,000		75,214
Warnermedia Holdings, Inc.
4.279% 3/15/32		200,000		177,375
				252,589
Food — 0.6%
Pilgrim's Pride Corp.
6.250% 7/01/33		480,000		464,924
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		375,000		277,115
3.000% 10/15/30 (a)		206,000		161,516
				903,555
Gas — 0.2%
NiSource, Inc.
4.800% 2/15/44		295,000		267,610
Home Builders — 0.4%
Mattamy Group Corp.
4.625% 3/01/30 (a) (b)		35,000		30,257
5.250% 12/15/27 (a)		227,000		211,541
Taylor Morrison Communities, Inc.
5.750% 1/15/28 (a)		500,000		483,460
				725,258
Insurance — 7.2%
Allianz SE 5 yr. CMT + 2.973%
3.500% VRN (a) (c)		1,176,000		970,759
Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53		640,000		629,804
Ascot Group Ltd.
4.250% 12/15/30 (a)		450,000		345,585
Athene Global Funding
2.950% 11/12/26 (a) (b)		450,000		398,805

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
AXIS Specialty Finance LLC 5 yr. CMT + 3.186%
4.900% VRN 1/15/40	$	490,000	$	390,617
Brighthouse Financial, Inc.
3.850% 12/22/51		575,000		362,884
4.700% 6/22/47		500,000		382,648
Brown & Brown, Inc.
4.200% 3/17/32		428,000		384,355
Corebridge Financial, Inc. 5 yr. CMT + 3.846%
6.875% VRN 12/15/52		430,000		412,151
Enstar Finance LLC 5 yr. CMT + 5.468%
5.750% VRN 9/01/40		1,060,000		913,667
Enstar Group Ltd.
3.100% 9/01/31		253,000		198,393
4.950% 6/01/29		124,000		115,471
Equitable Holdings, Inc. 5 yr. CMT + 4.736%
4.950% VRN (c)		505,000		468,994
Fairfax Financial Holdings Ltd.
5.625% 8/16/32		255,000		246,325
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		380,000		286,078
5 yr. CMT + 3.796% 4.700% VRN 10/15/51 (a)		1,170,000		829,297
Hanwha Life Insurance Co. Ltd. 5 yr. CMT + 1.850%
3.379% VRN 2/04/32 (a)		520,000		465,367
Hill City Funding Trust
4.046% 8/15/41 (a)		490,000		333,900
Jackson Financial, Inc.
3.125% 11/23/31		550,000		426,752
Kyobo Life Insurance Co. Ltd. 5 yr. CMT + 2.887%
5.900% VRN 6/15/52 (a)		461,000		450,627
Liberty Mutual Group, Inc. 5 yr. CMT + 3.315%
4.125% VRN 12/15/51 (a)		265,000		208,237
Lincoln National Corp. 5 yr. CMT + 5.318%
9.250% VRN (b) (c)		169,000		177,458
MetLife Capital Trust IV
7.875% 12/15/67 (a)		325,000		340,190
Prudential Financial, Inc. 5 yr. CMT + 3.162%
5.125% VRN 3/01/52		340,000		306,976
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		570,000		442,810
4.750% 4/08/32 (a)		790,000		660,409
Unum Group
4.125% 6/15/51		460,000		336,059
USF&G Capital I
8.500% 12/15/45 (a)		95,000		104,542
				11,589,160
Internet — 0.1%
Expedia Group, Inc.
2.950% 3/15/31		178,000		149,993
Investment Companies — 2.4%
Ares Capital Corp.
2.150% 7/15/26		560,000		485,561
Blackstone Private Credit Fund
1.750% 9/15/24		625,000		586,483
2.625% 12/15/26		330,000		280,763
4.000% 1/15/29		630,000		534,016

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Golub Capital BDC, Inc.
2.500% 8/24/26	$	195,000	$	168,636
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
6.250% 5/15/26		1,000,000		910,115
OWL Rock Core Income Corp.
4.700% 2/08/27		410,000		372,043
5.500% 3/21/25		535,000		514,819
				3,852,436
Leisure Time — 0.3%
Royal Caribbean Cruises Ltd.
5.500% 8/31/26 (a)		485,000		459,834
Lodging — 0.8%
Las Vegas Sands Corp.
3.900% 8/08/29		525,000		468,437
Travel & Leisure Co.
4.500% 12/01/29 (a)		917,000		780,207
				1,248,644
Media — 1.1%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.000% 2/01/28 (a)		250,000		227,772
Charter Communications Operating LLC/Charter Communications Operating Capital
3.900% 6/01/52		150,000		98,155
CSC Holdings LLC
4.625% 12/01/30 (a)		250,000		111,234
5.000% 11/15/31 (a)		325,000		151,355
5.750% 1/15/30 (a)		200,000		94,434
Discovery Communications LLC
4.000% 9/15/55		235,000		156,194
4.650% 5/15/50		55,000		41,896
DISH DBS Corp.
7.375% 7/01/28		1,123,000		600,805
Time Warner Cable LLC
4.500% 9/15/42		250,000		186,998
6.750% 6/15/39		115,000		110,524
				1,779,367
Mining — 0.9%
First Quantum Minerals Ltd.
6.875% 3/01/26 (a) (b)		1,000,000		984,403
Novelis Corp.
3.875% 8/15/31 (a) (b)		533,000		438,452
				1,422,855
Oil & Gas — 2.7%
Antero Resources Corp.
7.625% 2/01/29 (a) (b)		74,000		75,081
BP Capital Markets PLC 5 yr. CMT + 4.398%
4.875% VRN (c)		310,000		281,790
EQT Corp.
7.000% STEP 2/01/30		695,000		727,686
Nabors Industries, Inc.
7.375% 5/15/27 (a)		564,000		536,663

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Ovintiv, Inc.
6.500% 8/15/34	$	185,000	$	185,398
6.500% 2/01/38		160,000		156,863
7.100% 7/15/53		395,000		406,598
Patterson-UTI Energy, Inc.
3.950% 2/01/28		540,000		483,876
5.150% 11/15/29		615,000		557,125
Petroleos Mexicanos
4.625% 9/21/23		575,000		569,624
5.350% 2/12/28		190,000		156,448
6.375% 1/23/45		35,000		21,497
6.500% 3/13/27		65,000		57,832
6.625% 6/15/38		51,000		34,052
Santos Finance Ltd.
3.649% 4/29/31 (a)		200,000		166,038
				4,416,571
Oil & Gas Services — 0.6%
NOV, Inc.
3.600% 12/01/29		267,000		237,161
3.950% 12/01/42		314,000		230,370
Weatherford International Ltd.
8.625% 4/30/30 (a) (b)		483,000		490,362
				957,893
Pharmaceuticals — 0.9%
1375209 BC Ltd.
9.000% 1/30/28 (a) (b)		158,000		158,395
AbbVie, Inc.
4.700% 5/14/45		150,000		137,045
Bausch Health Cos., Inc.
11.000% 9/30/28 (a) (b)		282,000		200,305
14.000% 10/15/30 (a)		55,000		32,725
Cigna Group
4.800% 7/15/46		185,000		169,719
CVS Health Corp.
5.050% 3/25/48		115,000		106,000
6.125% 9/15/39		25,000		25,940
CVS Pass-Through Trust
5.926% 1/10/34 (a)		159,713		151,494
7.507% 1/10/32 (a)		11,406		11,899
Utah Acquisition Sub, Inc.
5.250% 6/15/46		500,000		394,191
				1,387,713
Pipelines — 1.2%
Energy Transfer LP
6.125% 12/15/45		230,000		218,513
5 yr. CMT + 5.134% 6.750% VRN (c)		270,000		240,304
3 mo. USD LIBOR + 4.028% 9.349% VRN (c)		615,000		551,962
EnLink Midstream Partners LP 3 mo. USD LIBOR + 4.110%
9.618% VRN (b) (c)		375,000		308,533
Plains All American Pipeline LP/PAA Finance Corp.
3.800% 9/15/30		265,000		235,131
4.700% 6/15/44		260,000		202,827

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
6.650% 1/15/37	$	175,000	$	175,555
				1,932,825
Private Equity — 0.3%
Apollo Management Holdings LP 5 yr. CMT + 3.266%
4.950% VRN 1/14/50 (a)		325,000		272,187
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		160,000		108,965
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		230,000		147,544
				528,696
Real Estate Investment Trusts (REITS) — 3.0%
Broadstone Net Lease LLC
2.600% 9/15/31		555,000		397,674
GLP Capital LP/GLP Financing II, Inc.
5.750% 6/01/28		250,000		244,591
Host Hotels & Resorts LP
2.900% 12/15/31		130,000		102,201
3.500% 9/15/30		476,000		403,223
Iron Mountain, Inc.
5.250% 7/15/30 (a)		250,000		225,264
Omega Healthcare Investors, Inc.
3.625% 10/01/29		640,000		524,495
4.750% 1/15/28		202,000		184,391
Piedmont Operating Partnership LP
2.750% 4/01/32		235,000		158,229
Rexford Industrial Realty LP
2.125% 12/01/30		246,000		194,062
Service Properties Trust
4.950% 10/01/29		590,000		457,744
Spirit Realty LP
2.700% 2/15/32		120,000		91,778
3.200% 1/15/27		220,000		197,954
3.400% 1/15/30		325,000		275,950
STORE Capital Corp.
4.500% 3/15/28		225,000		196,495
4.625% 3/15/29		425,000		357,773
Ventas Realty LP
5.700% 9/30/43		85,000		79,948
WEA Finance LLC
2.875% 1/15/27 (a)		475,000		409,026
WEA Finance LLC/Westfield U.K. & Europe Finance PLC
3.750% 9/17/24 (a)		425,000		401,333
				4,902,131
Retail — 0.5%
Advance Auto Parts, Inc.
5.950% 3/09/28		217,000		214,122
Nordstrom, Inc.
4.250% 8/01/31		440,000		342,980
Sonic Automotive, Inc.
4.875% 11/15/31 (a) (b)		277,000		227,302
				784,404

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Software — 0.1%
Oracle Corp.
6.900% 11/09/52	$	149,000	$	167,233
Telecommunications — 1.8%
Altice France SA
5.125% 7/15/29 (a)		442,000		313,764
AT&T, Inc.
3.550% 9/15/55		814,000		569,853
British Telecommunications PLC
9.625% STEP 12/15/30		580,000		713,614
Deutsche Telekom International Finance BV
8.750% STEP 6/15/30		135,000		161,674
Hughes Satellite Systems Corp.
6.625% 8/01/26 (b)		444,000		415,140
Sprint Capital Corp.
6.875% 11/15/28		500,000		529,997
8.750% 3/15/32		141,000		170,414
				2,874,456
Toys, Games & Hobbies — 0.1%
Hasbro, Inc.
3.900% 11/19/29		225,000		203,319
Trucking & Leasing — 0.4%
AerCap Global Aviation Trust 3 mo. USD Term SOFR + 4.562%
6.500% VRN 6/15/45 (a)		600,000		579,947
Venture Capital — 0.6%
Hercules Capital, Inc.
2.625% 9/16/26 (b)		738,000		631,497
3.375% 1/20/27		340,000		294,528
				926,025
TOTAL CORPORATE DEBT (Cost $82,092,480)				70,415,104
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 27.1%
Commercial Mortgage-Backed Securities — 10.9%
Aventura Mall Trust, Series 2018-AVM, Class D,
4.249% VRN 7/05/40 (a) (d)		530,000		424,374
BAMLL Commercial Mortgage Securities Trust
Series 2019-BPR, Class CMP, 4.024% VRN 11/05/32 (a) (d)		440,000		376,315
Series 2019-BPR, Class DMP, 4.024% VRN 11/05/32 (a) (d)		540,000		456,809
BANK
Series 2020-BN30, Class MCDF, 3.016% VRN 12/15/53 (d)		500,000		258,026
Series 2019-BN17, Class C, 4.664% VRN 4/15/52 (d)		331,000		253,403
BBCMS Mortgage Trust
Series 2018-CHRS, Class B, 4.409% VRN 8/05/38 (a) (d)		400,000		323,821
Series 2018-CHRS, Class C, 4.409% VRN 8/05/38 (a) (d)		280,000		215,634
Series 2018-CHRS, Class D, 4.409% VRN 8/05/38 (a) (d)		270,000		200,303
Benchmark Mortgage Trust
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (d)		500,000		319,772
Series 2020-IG1, Class D, 3.347% VRN 9/15/43 (d)		400,000		165,284
BGME Trust, Series 2021-VR, Class D,
3.094% VRN 1/10/43 (a) (d)		3,100,000		2,274,622

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
BMO Mortgage Trust, Series 2023-C4, Class A5,
5.117% VRN 2/15/56 (d)	$	300,000	$	298,610
BX Commercial Mortgage Trust, Series 2021-VOLT, Class G, 1 mo. USD LIBOR + 2.850%
8.043% FRN 9/15/36 (a)		2,004,000		1,843,170
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD LIBOR + 2.150%
7.343% FRN 12/15/37 (a)		572,453		558,156
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		222,000		161,495
COMM Mortgage Trust, Series 2015-CR23, Class C,
4.443% VRN 5/10/48 (d)		110,000		92,303
DC Office Trust
Series 2019-MTC, Class D, 3.174% VRN 9/15/45 (a) (d)		357,000		238,265
Series 2019-MTC, Class E, 3.174% VRN 9/15/45 (a) (d)		622,000		396,560
DROP Mortgage Trust, Series 2021-FILE, Class D, 1 mo. USD LIBOR + 2.750%
7.943% FRN 10/15/43 (a)		998,000		840,973
GS Mortgage Securities Trust, Series 2018-GS10, Class D
3.000% 7/10/51 (a)		599,000		381,691
Hudson Yards Mortgage Trust, Series 2019-30HY, Class E,
3.558% VRN 7/10/39 (a) (d)		630,000		471,654
Jackson Park Trust, Series 2019-LIC, Class D,
3.351% VRN 10/14/39 (a) (d)		686,000		508,759
JP Morgan Chase Commercial Mortgage Securities Trust
Series 2022-OPO, Class C, 3.565% VRN 1/05/39 (a) (d)		700,000		488,857
Series 2019-OSB, Class E, 3.909% VRN 6/05/39 (a) (d)		553,000		416,121
JPMBB Commercial Mortgage Securities Trust, Series 2014-C21, Class C,
4.798% VRN 8/15/47 (d)		300,000		245,871
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD Term SOFR + 1.864%
7.012% FRN 8/15/38 (a)		893,542		816,902
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.950%
7.143% FRN 5/15/36 (a)		263,000		258,811
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
7.012% FRN 3/15/38 (a)		424,643		405,819
Med Trust, Series 2021-MDLN, Class F, 1 mo. USD LIBOR + 4.000%
9.194% FRN 11/15/38 (a)		1,990,447		1,878,554
MFT Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		205,000		146,848
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (d)		215,000		147,656
MKT Mortgage Trust, Series 2020-525M, Class E,
3.039% VRN 2/12/40 (a) (d)		213,000		101,706
Ready Capital Commercial Mortgage Financing LLC, 1 mo. USD Term SOFR + 3.198%
8.198% FRN 5/25/38 (a)		500,000		497,700
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
7.293% FRN 7/15/39 (a)		864,000		650,113
Wells Fargo Commercial Mortgage Trust
Series 2015-NXS1, Class C, 3.848% VRN 5/15/48 (d)		140,000		124,111
Series 2021-FCMT, Class C, 1 mo. USD LIBOR + 2.400% 7.593% FRN 5/15/31 (a)		461,000		420,887
				17,659,955

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Home Equity Asset-Backed Securities — 0.0%
Credit Suisse Seasoned Loan Trust, Series 2006-1, Class A, 1 mo. USD LIBOR + .480%
5.630% FRN 10/25/34 (a)	$	4,881	$	4,904
Other Asset-Backed Securities — 12.0%
522 Funding CLO Ltd., Series 2018-3A, Class CR, 3 mo. USD LIBOR + 2.050%
7.300% FRN 10/20/31 (a)		250,000		240,760
AIMCO CLO Series Ltd., Series 2018-AA, Class B, 3 mo. USD LIBOR + 1.400%
6.660% FRN 4/17/31 (a)		250,000		242,972
Anchorage Capital CLO Ltd., Series 2021-19A, Class A, 3 mo. USD LIBOR + 1.210%
6.470% FRN 10/15/34 (a)		1,000,000		974,909
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. USD Term SOFR + 2.550%
7.607% FRN 4/26/35 (a)		500,000		500,158
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD LIBOR + .900%
3.815% FRN 10/25/34		105,084		91,662
Atrium XV, Series 15A, Class B, 3 mo. USD LIBOR + 1.750%
7.023% FRN 1/23/31 (a)		250,000		245,026
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.302% FRN 4/18/35 (a)		500,000		486,440
Ballyrock CLO Ltd., Series 2021-17A, Class A1A, 3 mo. USD LIBOR + 1.150%
6.400% FRN 10/20/34 (a)		250,000		245,869
Blackbird Capital Aircraft Lease Securitization Ltd., Series 2016-1A, Class A,
4.213% STEP 12/16/41 (a)		315,870		290,496
BRE Grand Islander Timeshare Issuer LLC
Series 2017-1A, Class A, 2.940% 5/25/29 (a)		31,957		31,121
Series 2017-1A, Class B, 3.240% 5/25/29 (a)		26,399		25,706
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)		885,798		815,219
Canyon Capital CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 2.150%
7.410% FRN 10/15/34 (a)		250,000		236,563
Castlelake Aircraft Structured Trust, Series 2019-1A, Class A
3.967% 4/15/39 (a)		146,156		129,750
DataBank Issuer, Series 2021-1A, Class B
2.650% 2/27/51 (a)		300,000		255,723
Diameter Capital CLO Ltd., Series 2021-2A, Class A1, 3 mo. USD LIBOR + 1.220%
6.480% FRN 10/15/36 (a)		500,000		490,084
Elara HGV Timeshare Issuer LLC
Series 2016-A, Class A, 2.730% 4/25/28 (a)		33,635		33,296
Series 2016-A, Class B, 3.220% 4/25/28 (a)		20,509		20,222
Goldentree Loan Management U.S. CLO Ltd., Series 2019-5A, Class CR, 3 mo. USD LIBOR + 2.050%
7.300% FRN 10/20/32 (a)		250,000		239,824
Goodgreen Trust
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		137,858		120,157
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		77,109		67,793
Series 2019-2A, Class B, 3.860% 4/15/55 (a)		93,196		77,962
Series 2021-1A, Class C, 5.740% 10/15/56 (a)		431,383		360,954

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Gracie Point International Funding, Series 2021-1A, Class C, 1 mo. USD LIBOR + 2.400%
7.570% FRN 11/01/23 (a)	$	610,000	$	609,320
Gulf Stream Meridian 6 Ltd., Series 2021-6A, Class A2, 3 mo. USD LIBOR + 1.750%
7.010% FRN 1/15/37 (a)		250,000		242,040
Harbor Park CLO Ltd., Series 2018-1A, Class B1, 3 mo. USD LIBOR + 1.700%
6.950% FRN 1/20/31 (a)		280,000		274,215
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		50,602		44,182
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		70,257		60,136
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		26,613		22,885
Series 2016-4A, Class A2, 4.290% 9/20/47 (a)		52,708		47,642
Horizon Aircraft Finance I Ltd., Series 2018-1, Class B
5.270% 12/15/38 (a)		225,200		119,124
Horizon Aircraft Finance II Ltd., Series 2019-1, Class B
4.703% 7/15/39 (a)		273,167		158,979
Horizon Aircraft Finance III Ltd., Series 2019-2, Class A
3.425% 11/15/39 (a)		463,681		366,308
HPS Loan Management Ltd., Series 2023-18A, Class B, 3 mo. USD Term SOFR + 2.950%
8.212% FRN 7/20/36 (a)		500,000		500,000
JG Wentworth XLIII LLC, Series 2019-1A, Class B
4.510% 8/15/73 (a)		135,894		120,267
Kestrel Aircraft Funding Ltd., Series 2018-1A, Class A
4.250% 12/15/38 (a)		335,384		287,706
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		287,364		236,650
LoanCore Issuer Ltd., Series 2022-CRE7, Class E, 30 day USD SOFR Average + 3.750%
8.816% FRN 1/17/37 (a)		1,000,000		939,307
Lunar Aircraft Ltd., Series 2020-1A, Class B
4.335% 2/15/45 (a)		106,976		68,376
MACH 1 Cayman Ltd., Series 2019-1, Class B
4.335% 10/15/39 (a)		319,562		226,685
Madison Park Funding Ltd.
Series 2018-28A, Class B, 3 mo. USD LIBOR + 1.600% 6.860% FRN 7/15/30 (a)		950,000		931,345
Series 2018-32A, Class CR, 3 mo. USD LIBOR + 2.000% 7.273% FRN 1/22/31 (a)		300,000		288,897
Mariner Finance Issuance Trust, Series 2021-AA, Class D
3.830% 3/20/36 (a)		381,000		312,389
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		23,330		21,972
Neuberger Berman CLO Ltd., Series 2015-20A, Class BRR, 3 mo. USD LIBOR + 1.650%
6.910% FRN 7/15/34 (a)		500,000		487,260
OHA Credit Funding Ltd., Series 2015-11A, Class CR, 3 mo. USD LIBOR + 2.150%
7.400% FRN 1/20/32 (a)		300,000		289,288
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD LIBOR + 1.850%
7.100% FRN 10/20/34 (a)		250,000		240,308
Pioneer Aircraft Finance Ltd., Series 2019-1, Class B
4.948% 6/15/44 (a)		341,661		248,223
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD LIBOR + 1.170%
6.469% FRN 10/30/34 (a)		500,000		489,733

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Rad CLO 15 Ltd., Series 2021-15A, Class C, 3 mo. USD LIBOR + 2.050%
7.300% FRN 1/20/34 (a)	$	250,000	$	237,797
Rad CLO 4 Ltd., Series 2019-4A, Class B1, 3 mo. USD LIBOR + 2.100%
7.355% FRN 4/25/32 (a)		250,000		247,762
Renew, Series 2021-1, Class M
3.210% 11/20/56 (a)		169,362		136,735
Rockford Tower CLO Ltd., Series 2018-1A, Class B, 3 mo. USD LIBOR + 1.720%
7.099% FRN 5/20/31 (a)		250,000		243,536
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD LIBOR + 1.140%
6.400% FRN 10/15/35 (a)		500,000		491,446
Sierra Timeshare Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		37,026		34,925
Slam Ltd., Series 2021-1A, Class B
3.422% 6/15/46 (a)		256,375		213,822
Steele Creek CLO Ltd., Series 2018-2A, Class C, 3 mo. USD LIBOR + 2.300%
7.645% FRN 8/18/31 (a)		490,000		464,576
Store Master Funding I-VII and XIV, Series 2019-1, Class A4
4.490% 11/20/49 (a)		756,204		553,295
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		103,414		94,739
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		256,132		223,041
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD LIBOR + 1.700%
6.950% FRN 1/20/31 (a)		490,000		472,411
Thrust Engine Leasing DAC
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,063,419		785,898
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		347,743		258,044
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD LIBOR + 1.650%
6.900% FRN 10/20/32 (a)		250,000		244,228
WAVE LLC, Series 2019-1, Class B
4.581% 9/15/44 (a)		608,521		346,437
Willis Engine Structured Trust III, Series 2017-A, Class A,
4.690% STEP 8/15/42 (a)		289,505		260,610
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		185,269		153,592
				19,318,797
Student Loans Asset-Backed Securities — 2.3%
College Ave Student Loans LLC
Series 2021-A, Class D, 4.120% 7/25/51 (a)		284,000		258,961
Series 2019-A, Class C, 4.460% 12/28/48 (a)		148,184		134,536
Series 2019-A, Class D, 5.500% 12/28/48 (a)		104,127		94,386
Commonbond Student Loan Trust, Series 2017-AGS, Class C
5.280% 5/25/41 (a)		33,079		30,697
EDvestinU Private Education Loan Issue No. 3 LLC, Series 2021-A, Class B
3.500% 11/25/50 (a)		600,000		473,752
Goal Capital Funding Trust, Series 2006-1, Class B, 3 mo. USD LIBOR + .450%
5.846% FRN 8/25/42		374,543		334,624
Navient Student Loan Trust
Series 2018-EA, Class B, 4.440% 12/15/59 (a)		140,000		126,892
Series 2018-1A, Class B, 1 mo. USD LIBOR + 1.200% 6.350% FRN 3/25/67 (a)		250,000		222,747

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Nelnet Student Loan Trust
Series 2005-4, Class A4R2, 1.191% FRN 3/22/32 (d)	$	120,000	$	118,899
Series 2006-3, Class B, 90 day USD SOFR Average + .512% 5.487% FRN 6/25/41		71,518		62,839
Series 2012-2A, Class B, 1 mo. USD LIBOR + 1.000% 6.150% FRN 11/25/36 (a)		200,000		198,089
Series 2012-1A, Class B, 1 mo. USD LIBOR + 1.000% 6.150% FRN 6/25/42 (a)		150,000		146,339
Series 2012-4A, Class B, 1 mo. USD LIBOR + 1.000% 6.150% FRN 7/26/49 (a)		350,000		301,654
Series 2014-2A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 6/25/41 (a)		100,000		98,997
Series 2014-5A, Class B, 1 mo. USD LIBOR + 1.500% 6.650% FRN 5/26/54 (a)		100,000		88,714
SLM Student Loan Trust
Series 2006-4, Class B, 3 mo. USD LIBOR + .200% 5.455% FRN 1/25/70		105,250		99,074
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.465% FRN 10/25/40		112,376		105,354
Series 2005-6, Class B, 3 mo. USD LIBOR + .290% 5.545% FRN 1/25/44		204,053		187,628
Series 2004-3, Class B, 3 mo. USD LIBOR + .470% 5.725% FRN 10/25/64		70,081		66,530
SMB Private Education Loan Trust, Series 2019-A, Class B
4.000% 11/17/42 (a)		185,000		164,321
SoFi Professional Loan Program LLC
Series 2017-C, Class C, 4.210% VRN 7/25/40 (a) (d)		180,000		157,941
Series 2017-A, Class C, 4.430% VRN 3/26/40 (a) (d)		170,000		153,735
South Carolina Student Loan Corp., Series 2015-A, Class A, 1 mo. USD LIBOR + 1.500%
6.650% FRN 1/25/36		37,893		37,827
				3,664,536
Whole Loan Collateral Collateralized Mortgage Obligations — 1.9%
Angel Oak Mortgage Trust I LLC
Series 2019-4, Class M1, 3.459% VRN 7/26/49 (a) (d)		474,186		453,611
Series 2019-2, Class M1, 4.065% VRN 3/25/49 (a) (d)		195,011		189,961
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
4.020% VRN 8/25/34 (d)		4,356		4,186
New Residential Mortgage Loan Trust, Series 2021-NQM3, Class B1,
3.398% VRN 11/27/56 (a) (d)		3,600,000		2,409,321
				3,057,079
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $51,613,128)				43,705,271
SOVEREIGN DEBT OBLIGATION — 0.1%
Mexico Government International Bonds
4.750% 3/08/44		214,000		182,768
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $239,482)				182,768
U.S. Government Agency Obligations and Instrumentalities (e) — 16.5%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. Series 2178, Class PB 7.000% 8/15/29		3,096		3,141
Pass-Through Securities — 16.5%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		465,712		383,151

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #RA4255 2.000% 1/01/51	$	959,929	$	791,254
Pool #SD0905 3.000% 3/01/52		726,150		641,616
Pool #SD1523 4.000% 8/01/52		1,064,724		1,005,614
Pool #SD1603 4.000% 9/01/52		672,337		631,523
Federal National Mortgage Association
Pool #FM8596 2.500% 9/01/51		465,276		397,743
Pool #FS3035 2.500% 4/01/52		1,527,750		1,306,002
Pool #MA3029 3.000% 6/01/32		229,404		217,363
Pool #MA3090 3.000% 8/01/32		93,039		88,155
Pool #AR3007 3.000% 2/01/43		82,097		74,465
Pool #FS1075 3.000% 3/01/52		735,022		651,382
Pool #CB3304 3.000% 4/01/52		1,114,054		987,283
Pool #CB3305 3.000% 4/01/52		1,355,825		1,200,694
Pool #AS1304 3.500% 12/01/28		58,143		56,076
Pool #MA1356 3.500% 2/01/43		452,122		417,085
Pool #CA6096 3.500% 6/01/50		954,579		874,841
Pool #FM4017 3.500% 8/01/50		63,995		58,749
Pool #CB3842 3.500% 6/01/52		2,195,045		2,010,658
Pool #CA1909 4.500% 6/01/48		346,031		338,291
Pool #CB3866 4.500% 6/01/52		845,428		815,882
Pool #CB4129 4.500% 7/01/52		1,071,098		1,029,649
Pool #AD6437 5.000% 6/01/40		26,245		26,350
Pool #AD6996 5.000% 7/01/40		169,579		170,338
Pool #AL8173 5.000% 2/01/44		56,455		56,797
Government National Mortgage Association
Pool #579140 6.500% 1/15/32		379		386
Pool #587280 6.500% 9/15/32		561		571
Pool #550659 6.500% 9/15/35		45,702		47,167
Pool #538689 6.500% 12/15/35		5,678		5,885
Pool #780651 7.000% 10/15/27		259		261
Pool #462384 7.000% 11/15/27		165		166
Pool #482668 7.000% 8/15/28		511		517
Pool #581417 7.000% 7/15/32		477		484
Pool #423836 8.000% 8/15/26		148		150
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		449,219		405,404
Pool #MA6283 3.000% 11/20/49		809,498		729,975
Pool #MA6409 3.000% 1/20/50		843,815		760,920
Pool #MA4321 3.500% 3/20/47		530,245		496,908
Government National Mortgage Association II TBA
2.500% 7/20/53 (f)		800,000		692,336
3.000% 7/20/53 (f)		975,000		871,020
Uniform Mortgage-Backed Security TBA
2.500% 7/13/53 (f)		400,000		338,984
3.000% 7/13/53 (f)		1,450,000		1,275,773
3.500% 7/13/53 (f)		1,600,000		1,457,375
4.000% 7/13/53 (f)		3,175,000		2,978,794
4.500% 7/18/38 (f)		700,000		685,891
5.000% 7/18/38 (f)		800,000		794,313
5.000% 7/13/53 (f)		800,000		783,781
				26,558,022
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $28,286,397)				26,561,163

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. TREASURY OBLIGATIONS — 6.1%
U.S. Treasury Bonds & Notes — 6.1%
U.S. Treasury Bonds
2.250% 8/15/49 (g)	$	5,440,000	$	3,950,483
U.S. Treasury Notes
3.000% 7/15/25		4,100,000		3,951,127
3.875% 1/15/26		2,000,000		1,962,461
				9,864,071
TOTAL U.S. TREASURY OBLIGATIONS (Cost $10,231,431)				9,864,071
TOTAL BONDS & NOTES (Cost $172,462,918)				150,728,377
TOTAL PURCHASED OPTIONS(#) — 0.0% (Cost $15,333)				10,454
	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		4,002
TOTAL WARRANTS (Cost $0)				4,002
TOTAL LONG-TERM INVESTMENTS (Cost $174,088,876)				151,786,070
	Principal Amount
SHORT-TERM INVESTMENTS — 12.0%
Commercial Paper — 7.4%
Alimentation Couche-Tard, Inc.
5.659% 7/14/23 (a)	$	3,000,000		2,993,760
Avangrid, Inc.
5.502% 7/24/23 (a)		2,000,000		1,992,827
5.540% 7/14/23 (a)		1,000,000		997,947
CenterPoint Energy, Inc.
5.618% 8/15/23 (a)		1,000,000		992,961
Hyundai Capital America
5.706% 8/28/23 (a)		1,000,000		990,878
Mohawk Industries, Inc.
5.609% 7/24/23 (a)		3,000,000		2,989,146
Sempra Energy
5.644% 9/05/23 (a)		1,000,000		989,542
				11,947,061

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Investment of Cash Collateral from Securities Loaned — 2.6%
State Street Navigator Securities Lending Government Money Market Portfolio (k)		4,264,865	$	4,264,865
	Principal Amount
Repurchase Agreement — 2.0%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (l)	$	3,300,154		3,300,154
TOTAL SHORT-TERM INVESTMENTS (Cost $19,513,848)				19,512,080
TOTAL INVESTMENTS — 106.2% (Cost $193,602,724) (m)				171,298,150
Other Assets/(Liabilities) — (6.2)%				(9,983,134)
NET ASSETS — 100.0%			$	161,315,016

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, 2023, the aggregate market value of these securities amounted to $81,466,273 or 50.50% of net assets.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $4,470,892 or 2.77% of net assets. The Fund received $303,012 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 perpetual and has no stated maturity date.

(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, 2023.

(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) Investment is valued using significant unobservable inputs.

(i) Non-income producing security.

(j) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2023, these securities amounted to a value of $4,002 or 0.00% of net assets.

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

(l) Maturity value of $3,300,572. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $3,366,237.

(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)
Call
AUD Call USD Put	Goldman Sachs International		12/29/23		0.68		384,885	AUD	384,885	$	4,409	$	2,484	$	1,925
Put
USD Put ILS Call	Goldman Sachs International		10/03/23		3.62		400,000	USD	400,000	$	4,958	$	4,809	$	149
USD Put NOK Call	Goldman Sachs International		10/17/23		9.89		260,000	USD	260,000		1,084		4,930		(3,846)
EUR Put SEK Call	UBS AG		8/07/23		10.75		730,000	EUR	730,000		3		3,110		(3,107)
										$	6,045	$	12,849	$	(6,804)
										$	10,454	$	15,333	$	(4,879)

OTC Options Written
Description	Counterparty	Expiration Date		Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid (Received)		Unrealized Appreciation (Depreciation)
Call
USD Call ILS Put	Goldman Sachs International		10/03/23		3.79		400,000	USD	400,000	$	(5,018)	$	(5,049)	$	31
USD Call NOK Put	Goldman Sachs International		10/17/23		10.82		260,000	USD	260,000		(5,978)		(5,189)		(789)
EUR Call SEK Put	JP Morgan Chase Bank N.A.		8/07/23		12.25		730,000	EUR	730,000		(785)		(3,429)		2,644
										$	(11,781)	$	(13,667)	$	1,886
Put
AUD Put USD Call	Goldman Sachs International		12/29/23		0.64		384,885	AUD	384,885	$	(3,052)	$	(2,374)	$	(678)
										$	(14,833)	$	(16,041)	$	1,208

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

Forward contracts
Counterparty	Settlement Date	Currency Purchased		Currency Sold		Unrealized Appreciation (Depreciation)
Bank of America N.A.	7/25/23	USD	305,204	CNH	2,084,735	$	17,996
Bank of America N.A.	8/15/23	EUR	84,493	USD	93,117		(732)
Bank of America N.A.	8/15/23	USD	167,266	HUF	58,289,835		(1,646)
Bank of America N.A.	8/16/23	PLN	745,805	USD	178,226		4,811
Bank of America N.A.	8/22/23	JPY	20,003,000	USD	149,093		(9,448)
Bank of America N.A.	8/22/23	USD	157,806	CNH	1,094,461		6,687
Barclays Bank PLC	8/22/23	CNH	1,094,461	USD	153,953		(2,834)
Citibank N.A.	7/11/23	CLP	213,993,120	USD	261,445		5,289
Citibank N.A.	7/11/23	PEN	1,550,142	USD	413,371		13,688
Citibank N.A.	7/11/23	USD	265,286	CLP	213,993,120		(1,449)
Citibank N.A.	7/25/23	IDR	2,374,108,000	USD	158,878		(551)
Citibank N.A.	7/25/23	JPY	79,828,000	USD	603,436		(48,544)
Citibank N.A.	7/25/23	USD	166,778	TWD	5,035,053		4,754
Citibank N.A.	8/22/23	USD	258,733	SGD	345,024		3,170
Citibank N.A.	8/22/23	USD	102,602	PHP	5,779,592		(1,967)
Goldman Sachs International	7/11/23	BRL	562,289	USD	115,457		1,843
Goldman Sachs International	7/25/23	CNH	2,084,735	USD	292,529		(5,321)
Goldman Sachs International	10/10/23	USD	113,598	BRL	562,289		(1,858)
HSBC Bank USA	7/18/23	NOK	2,584,608	USD	245,472		(4,567)
HSBC Bank USA	7/18/23	ILS	551,694	USD	151,639		(2,749)
HSBC Bank USA	7/18/23	USD	416,053	CHF	372,870		(1,081)
HSBC Bank USA	7/18/23	USD	248,401	NOK	2,584,608		7,496
HSBC Bank USA	8/15/23	ILS	914,455	USD	250,859		(3,842)
HSBC Bank USA	8/22/23	KRW	735,057,130	USD	551,940		7,235
HSBC Bank USA	8/22/23	THB	8,957,520	USD	266,752		(12,909)
HSBC Bank USA	8/22/23	USD	417,000	KRW	534,865,050		10,116
JP Morgan Chase Bank N.A.	7/11/23	USD	408,308	PEN	1,550,142		(18,751)
JP Morgan Chase Bank N.A.	7/11/23	USD	108,821	BRL	562,289		(8,479)
Morgan Stanley & Co. LLC	8/09/23	MXN	2,099,551	USD	114,671		7,170
Morgan Stanley & Co. LLC	8/15/23	USD	416,848	CHF	368,221		3,718
Morgan Stanley & Co. LLC	8/15/23	USD	102,000	ZAR	1,885,603		2,223
						$	(30,532)

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Long Bond	9/20/23		54	$	6,858,180	$	(5,242)
U.S. Treasury Ultra Bond	9/20/23		66		8,892,410		98,028
U.S. Treasury Note 2 Year	9/29/23		65		13,395,322		(177,978)
U.S. Treasury Note 5 Year	9/29/23		86		9,379,694		(169,631)
						$	(254,823)
Short
U.S. Treasury Ultra 10 Year	9/20/23		7	$	(837,791)	$	8,728

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation (Depreciation)

CDX.NA.IG Series 39†

1.000%

Quarterly

6/20/28

USD

24,000,000

$

(358,656)

$

(125,407)

$

(233,249)

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

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 3.965%		Annually		6/23/25	USD	11,000,000	$	(177,437)	$	—	$	(177,437)
12-Month USD SOFR	Annually		Fixed 3.815%		Annually		6/30/25	USD	8,000,000		(151,057)		—		(151,057)
12-Month USD SOFR	Annually		Fixed 3.749%		Annually		7/14/25	USD	8,023,000		(157,211)		—		(157,211)
12-Month USD SOFR	Annually		Fixed 3.618%		Annually		8/07/25	USD	10,467,000		(219,951)		—		(219,951)
Fixed 3.293%	Annually		12-Month USD SOFR		Annually		6/23/33	USD	2,000,000		43,811		—		43,811
Fixed 3.223%	Annually		12-Month USD SOFR		Annually		6/30/33	USD	2,300,000		63,651		—		63,651
Fixed 3.086%	Annually		12-Month USD SOFR		Annually		7/14/33	USD	2,291,000		87,814		—		87,814
Fixed 3.107%	Annually		12-Month USD SOFR		Annually		8/07/33	USD	2,327,000		82,144		—		82,144
										$	(428,236)	$	—	$	(428,236)

† Payment is based on a percentage of the index. Reference entities are a number of individual issuers comprising the index.

Currency Legend

AUD Australian Dollar

BRL Brazilian Real

CHF Swiss Franc

CLP Chilean Peso

CNH Offshore Chinese Yuan

EUR Euro

HUF Hungarian Forint

IDR Indonesian Rupiah

ILS Israeli Shekel

JPY Japanese Yen

KRW South Korean Won

MXN Mexican Peso

NOK Norwegian Krone

PEN Peruvian New Sol

PHP Philippine Peso

PLN Polish Zloty

SGD Singapore Dollar

THB Thai Baht

TWD Taiwan Dollar

USD U.S. Dollar

ZAR South African Rand

MassMutual High Yield Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 92.8%
BANK LOANS — 1.9%
Apparel — 0.2%
Hanesbrands, Inc., 2023 Term Loan B, 1 mo. SOFR CME + 3.750%
8.852% VRN 3/08/30	$	689,199	$	690,921
Computers — 0.0%
SonicWall U.S. Holdings, Inc., 2nd Lien Term Loan, 1 mo. USD LIBOR + 7.500%
12.693% VRN 5/18/26		51,897		48,086
Cosmetics & Personal Care — 0.3%
Journey Personal Care Corp., 2021 Term Loan B, 6 mo. USD LIBOR + 4.250%
9.981% VRN 3/01/28		1,243,655		1,060,216
Packaging & Containers — 0.1%
Clydesdale Acquisition Holdings, Inc., Term Loan B, 1 mo. SOFR CME + 4.175%
9.377% VRN 4/13/29		649,211		638,064
Real Estate Investment Trusts (REITS) — 0.4%
RHP Hotel Properties LP, 2023 Term Loan B, 1 mo. USD Term SOFR + 2.750%
7.852% VRN 5/18/30		1,534,615		1,532,375
Software — 0.9%
Athenahealth Group, Inc.
2022 Term Loan B,
0.000% 2/15/29 (a)		2,671,778		2,568,247
2022 Delayed Draw Term Loan,
0.000% 2/15/29 (a)		82,055		78,876
Quest Software U.S. Holdings, Inc., 2022 2nd Lien Term Loan, 3 mo. SOFR + 7.500%
12.695% VRN 2/01/30		1,528,400		1,001,102
				3,648,225
TOTAL BANK LOANS (Cost $8,027,603)				7,617,887
CORPORATE DEBT — 90.9%
Advertising — 0.6%
CMG Media Corp.
8.875% 12/15/27 (b)		1,617,000		1,133,268
Stagwell Global LLC
5.625% 8/15/29 (b)		1,514,000		1,295,579
				2,428,847

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Aerospace & Defense — 0.6%
TransDigm, Inc.
6.750% 8/15/28 (b)	$	907,000	$	910,438
Triumph Group, Inc.
9.000% 3/15/28 (b)		1,345,000		1,373,297
				2,283,735
Agriculture — 0.2%
Darling Ingredients, Inc.
6.000% 6/15/30 (b)		938,000		916,101
Airlines — 3.1%
Allegiant Travel Co.
7.250% 8/15/27 (b)		2,000,000		1,992,620
American Airlines, Inc.
11.750% 7/15/25 (b)		483,000		529,623
American Airlines, Inc./AAdvantage Loyalty IP Ltd.
5.500% 4/20/26 (b)		3,925,000		3,888,457
5.750% 4/20/29 (b)		1,488,000		1,444,817
Hawaiian Brand Intellectual Property Ltd./HawaiianMiles Loyalty Ltd.
5.750% 1/20/26 (b)		946,043		895,466
Mileage Plus Holdings LLC/Mileage Plus Intellectual Property Assets Ltd.
6.500% 6/20/27 (b)		1,029,600		1,032,171
Spirit Loyalty Cayman Ltd./Spirit IP Cayman Ltd.
8.000% 9/20/25 (b)		923,000		929,899
United Airlines, Inc.
4.375% 4/15/26 (b)		758,000		720,180
4.625% 4/15/29 (b)		795,000		724,378
				12,157,611
Auto Manufacturers — 2.2%
Ford Motor Co.
3.250% 2/12/32		2,869,000		2,256,997
Ford Motor Credit Co. LLC
4.000% 11/13/30		2,330,000		1,991,179
4.125% 8/17/27		1,560,000		1,424,506
4.389% 1/08/26		712,000		673,839
5.113% 5/03/29		322,000		298,626
6.950% 6/10/26		1,000,000		1,004,930
7.350% 11/04/27		1,232,000		1,258,020
				8,908,097
Auto Parts & Equipment — 0.6%
Adient Global Holdings Ltd.
4.875% 8/15/26 (b)		1,734,000		1,647,223
8.250% 4/15/31 (b)		816,000		828,574
				2,475,797
Biotechnology — 0.4%
Emergent BioSolutions, Inc.
3.875% 8/15/28 (b)		2,529,000		1,470,879
Building Materials — 2.3%
Emerald Debt Merger Sub LLC
6.625% 12/15/30 (b)		2,389,000		2,368,096

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Knife River Corp.
7.750% 5/01/31 (b)	$	1,107,000	$	1,120,860
New Enterprise Stone & Lime Co., Inc.
5.250% 7/15/28 (b)		2,072,000		1,885,583
9.750% 7/15/28 (b)		3,764,000		3,631,056
				9,005,595
Chemicals — 4.3%
Celanese U.S. Holdings LLC
6.379% 7/15/32 (c)		1,997,000		2,014,320
Consolidated Energy Finance SA
5.625% 10/15/28 (b)		4,296,000		3,652,459
LSF11 A5 HoldCo LLC
6.625% 10/15/29 (b)		2,205,000		1,841,613
Methanex Corp.
5.125% 10/15/27		2,056,000		1,914,059
5.250% 12/15/29 (c)		1,618,000		1,478,433
Olympus Water U.S. Holding Corp.
4.250% 10/01/28 (b)		2,503,000		1,978,738
6.250% 10/01/29 (b) (c)		1,772,000		1,281,690
Polar U.S. Borrower LLC/Schenectady International Group, Inc.
6.750% 5/15/26 (b)		1,257,000		741,620
Tronox, Inc.
4.625% 3/15/29 (b)		1,156,000		960,674
Vibrantz Technologies, Inc.
9.000% 2/15/30 (b) (c)		1,507,000		1,154,739
				17,018,345
Coal — 0.5%
Coronado Finance Pty. Ltd.
10.750% 5/15/26 (b)		2,077,000		2,138,273
Commercial Services — 2.0%
Alta Equipment Group, Inc.
5.625% 4/15/26 (b)		2,194,000		2,038,938
Prime Security Services Borrower LLC/Prime Finance, Inc.
6.250% 1/15/28 (b)		2,865,000		2,683,936
PROG Holdings, Inc.
6.000% 11/15/29 (b)		2,527,000		2,225,068
Sabre Global, Inc.
7.375% 9/01/25 (b)		638,000		566,295
9.250% 4/15/25 (b)		446,000		415,940
				7,930,177
Computers — 0.5%
Presidio Holdings, Inc.
8.250% 2/01/28 (b)		1,048,000		997,839
Seagate HDD Cayman
9.625% 12/01/32 (b)		748,800		826,254
				1,824,093
Cosmetics & Personal Care — 0.6%
Coty, Inc.
6.500% 4/15/26 (b)		472,000		467,941

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Coty, Inc./HFC Prestige Products, Inc./HFC Prestige International U.S. LLC
4.750% 1/15/29 (b)	$	2,104,000	$	1,939,888
				2,407,829
Distribution & Wholesale — 0.7%
American Builders & Contractors Supply Co., Inc.
3.875% 11/15/29 (b)		1,527,000		1,303,548
Resideo Funding, Inc.
4.000% 9/01/29 (b) (c)		1,549,000		1,285,051
Univar Solutions USA, Inc.
5.125% 12/01/27 (b)		177,000		180,950
				2,769,549
Diversified Financial Services — 5.6%
Coinbase Global, Inc.
3.375% 10/01/28 (b)		305,000		203,997
3.625% 10/01/31 (b)		373,000		220,381
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (b)		9,512,514		8,707,280
Jefferson Capital Holdings LLC
6.000% 8/15/26 (b)		2,664,000		2,165,345
Macquarie Airfinance Holdings Ltd.
8.375% 5/01/28 (b)		1,977,000		2,004,560
Midcap Financial Issuer Trust
5.625% 1/15/30 (b)		723,000		574,079
6.500% 5/01/28 (b)		1,492,000		1,327,880
OneMain Finance Corp.
4.000% 9/15/30		1,207,000		929,390
5.375% 11/15/29		1,195,000		1,015,926
PRA Group, Inc.
5.000% 10/01/29 (b) (c)		4,020,000		3,042,939
7.375% 9/01/25 (b)		1,582,000		1,503,865
8.375% 2/01/28 (b)		445,000		403,281
				22,098,923
Electric — 3.1%
PG&E Corp.
5.000% 7/01/28 (c)		3,121,000		2,863,845
5.250% 7/01/30		583,000		522,539
Pike Corp.
5.500% 9/01/28 (b)		2,213,000		1,985,756
Talen Energy Supply LLC
8.625% 6/01/30 (b)		2,894,000		2,995,290
Vistra Operations Co. LLC
3.550% 7/15/24 (b)		2,027,000		1,957,690
5.125% 5/13/25 (b)		2,000,000		1,949,912
				12,275,032
Electronics — 0.6%
Atkore, Inc.
4.250% 6/01/31 (b)		2,549,000		2,204,885
Engineering & Construction — 1.5%
Arcosa, Inc.
4.375% 4/15/29 (b)		2,166,000		1,940,741

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Dycom Industries, Inc.
4.500% 4/15/29 (b) (c)	$	629,000	$	571,258
Global Infrastructure Solutions, Inc.
5.625% 6/01/29 (b)		488,000		397,616
7.500% 4/15/32 (b)		1,457,000		1,238,453
MasTec, Inc.
4.500% 8/15/28 (b)		938,000		865,420
Railworks Holdings LP/Railworks Rally, Inc.
8.250% 11/15/28 (b)		879,000		817,068
				5,830,556
Entertainment — 0.5%
Caesars Entertainment, Inc.
7.000% 2/15/30 (b)		419,000		420,777
Live Nation Entertainment, Inc.
4.750% 10/15/27 (b)		930,000		867,225
Midwest Gaming Borrower LLC/Midwest Gaming Finance Corp.
4.875% 5/01/29 (b)		987,000		871,568
				2,159,570
Environmental Controls — 0.2%
Enviri Corp.
5.750% 7/31/27 (b)		734,000		638,837
Food — 1.0%
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC
6.500% 2/15/28 (b)		1,532,000		1,534,543
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
3.625% 1/15/32 (b)		2,474,000		2,007,502
3.750% 12/01/31 (b)		400,000		328,016
				3,870,061
Gas — 0.3%
AmeriGas Partners LP/AmeriGas Finance Corp.
9.375% 6/01/28 (b)		1,254,000		1,273,587
Hand & Machine Tools — 0.9%
Regal Rexnord Corp.
6.400% 4/15/33 (b)		3,540,000		3,537,016
Health Care – Products — 0.5%
Garden Spinco Corp.
8.625% 7/20/30 (b)		1,861,000		2,000,111
Health Care – Services — 5.5%
Centene Corp.
4.625% 12/15/29		4,327,000		3,982,730
Charles River Laboratories International, Inc.
3.750% 3/15/29 (b)		50,000		44,002
4.250% 5/01/28 (b)		2,190,000		2,005,107
CHS/Community Health Systems, Inc.
4.750% 2/15/31 (b)		1,356,000		1,024,843
5.625% 3/15/27 (b)		556,000		489,968
6.000% 1/15/29 (b)		1,492,000		1,255,145
6.125% 4/01/30 (b)		1,361,000		810,775
6.875% 4/15/29 (b)		472,000		294,773

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
HCA, Inc.
3.500% 9/01/30	$	5,131,000	$	4,497,576
Legacy LifePoint Health LLC
6.750% 4/15/25 (b)		857,000		795,999
Molina Healthcare, Inc.
4.375% 6/15/28 (b)		1,253,000		1,155,079
Radiology Partners, Inc.
9.250% 2/01/28 (b)		3,443,000		1,253,896
RP Escrow Issuer LLC
5.250% 12/15/25 (b)		1,155,000		852,043
Tenet Healthcare Corp.
4.375% 1/15/30		1,178,000		1,063,022
6.125% 6/15/30		2,081,000		2,051,242
				21,576,200
Home Builders — 1.2%
Ashton Woods USA LLC/Ashton Woods Finance Co.
4.625% 8/01/29 (b)		1,339,000		1,141,136
Mattamy Group Corp.
4.625% 3/01/30 (b) (c)		4,245,000		3,669,779
5.250% 12/15/27 (b)		25,000		23,297
				4,834,212
Insurance — 0.7%
Alliant Holdings Intermediate LLC/Alliant Holdings Co-Issuer
6.750% 4/15/28 (b)		696,000		690,250
Highlands Holdings Bond Issuer Ltd./Highlands Holdings Bond Co.-Issuer, Inc.
7.625% 10/15/25 (b)		2,333,066		2,151,139
				2,841,389
Internet — 1.1%
Getty Images, Inc.
9.750% 3/01/27 (b)		3,859,000		3,810,997
Uber Technologies, Inc.
4.500% 8/15/29 (b)		770,000		708,706
				4,519,703
Investment Companies — 0.5%
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
4.750% 9/15/24		1,179,000		1,126,494
6.250% 5/15/26		937,000		852,778
				1,979,272
Leisure Time — 2.8%
Carnival Corp.
7.625% 3/01/26 (b) (c)		651,000		637,589
5.750% 3/01/27 (b)		1,023,000		941,764
6.000% 5/01/29 (b)		1,597,000		1,425,856
Life Time, Inc.
8.000% 4/15/26 (b)		848,000		837,299
NCL Corp. Ltd.
5.875% 3/15/26 (b)		781,000		730,675
5.875% 2/15/27 (b)		224,000		218,043
8.375% 2/01/28 (b)		668,000		698,023

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
NCL Finance Ltd.
6.125% 3/15/28 (b)	$	620,000	$	558,012
Royal Caribbean Cruises Ltd.
4.250% 7/01/26 (b)		1,609,000		1,476,982
5.500% 8/31/26 (b)		601,000		569,815
5.375% 7/15/27 (b)		451,000		421,709
5.500% 4/01/28 (b)		174,000		162,262
Viking Cruises Ltd.
7.000% 2/15/29 (b)		2,608,000		2,425,440
				11,103,469
Lodging — 1.7%
Hilton Grand Vacations Borrower Escrow LLC/Hilton Grand Vacations Borrower Esc
4.875% 7/01/31 (b)		1,266,000		1,062,093
Sugarhouse HSP Gaming Prop Mezz LP/Sugarhouse HSP Gaming Finance Corp.
5.875% 5/15/25 (b)		1,046,000		1,009,390
Travel & Leisure Co.
4.500% 12/01/29 (b)		1,000,000		850,826
4.625% 3/01/30 (b)		800,000		677,000
6.000% STEP 4/01/27		419,000		406,723
6.625% 7/31/26 (b)		1,839,000		1,825,022
Wyndham Hotels & Resorts, Inc.
4.375% 8/15/28 (b)		968,000		883,978
				6,715,032
Machinery – Diversified — 0.2%
Chart Industries, Inc.
7.500% 1/01/30 (b)		756,000		771,313
Media — 6.1%
Altice Financing SA
5.000% 1/15/28 (b)		1,105,000		883,076
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 2/01/31 (b)		512,000		414,192
4.250% 1/15/34 (b)		3,376,000		2,551,472
4.500% 5/01/32		853,000		681,084
5.000% 2/01/28 (b)		939,000		855,513
5.375% 6/01/29 (b)		1,205,000		1,089,434
CSC Holdings LLC
4.625% 12/01/30 (b)		1,843,000		820,019
5.750% 1/15/30 (b)		670,000		316,354
7.500% 4/01/28 (b)		800,000		455,978
Cumulus Media New Holdings, Inc.
6.750% 7/01/26 (b) (c)		1,114,000		765,717
DIRECTV Financing LLC/DIRECTV Financing Co-Obligor, Inc.
5.875% 8/15/27 (b)		2,669,000		2,417,140
DISH DBS Corp.
5.125% 6/01/29		380,000		176,452
5.250% 12/01/26 (b)		392,000		314,452
5.750% 12/01/28 (b)		504,000		374,867
7.375% 7/01/28		918,000		491,130
DISH Network Corp.
11.750% 11/15/27 (b)		818,000		798,295
Gray Escrow II, Inc.
5.375% 11/15/31 (b)		1,881,000		1,246,704

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
iHeartCommunications, Inc.
8.375% 5/01/27	$	1,265,114	$	842,793
LCPR Senior Secured Financing DAC
6.750% 10/15/27 (b)		2,216,000		2,076,951
Sirius XM Radio, Inc.
3.875% 9/01/31 (b)		3,368,000		2,604,449
Virgin Media Secured Finance PLC
4.500% 8/15/30 (b)		250,000		209,580
5.500% 5/15/29 (b)		4,137,000		3,742,137
				24,127,789
Mining — 1.8%
Arconic Corp.
6.125% 2/15/28 (b)		1,627,000		1,647,181
Constellium SE
3.750% 4/15/29 (b)		600,000		510,454
First Quantum Minerals Ltd.
6.875% 3/01/26 (b) (c)		1,420,000		1,397,853
7.500% 4/01/25 (b)		2,297,000		2,294,142
8.625% 6/01/31 (b)		805,000		825,028
Novelis Corp.
3.250% 11/15/26 (b)		304,000		275,171
3.875% 8/15/31 (b)		313,000		257,478
				7,207,307
Miscellaneous - Manufacturing — 0.6%
Amsted Industries, Inc.
5.625% 7/01/27 (b)		2,435,000		2,355,106
Oil & Gas — 10.5%
Apache Corp.
4.750% 4/15/43 (c)		816,000		599,760
5.100% 9/01/40		607,000		493,188
5.350% 7/01/49 (c)		910,000		707,525
Chesapeake Energy Corp.
5.875% 2/01/29 (b) (c)		1,359,000		1,290,874
Comstock Resources, Inc.
5.875% 1/15/30 (b)		733,000		636,369
6.750% 3/01/29 (b)		1,512,000		1,383,399
CVR Energy, Inc.
5.250% 2/15/25 (b)		1,944,000		1,874,288
5.750% 2/15/28 (b)		1,222,000		1,075,360
Hilcorp Energy I LP/Hilcorp Finance Co.
5.750% 2/01/29 (b)		513,000		464,515
6.000% 4/15/30 (b)		443,000		403,384
6.000% 2/01/31 (b)		1,792,000		1,597,348
6.250% 11/01/28 (b)		2,052,000		1,931,557
Murphy Oil Corp.
6.375% 7/15/28 (c)		1,190,000		1,172,892
Nabors Industries Ltd.
7.250% 1/15/26 (b)		2,399,000		2,239,514
7.500% 1/15/28 (b)		909,000		795,430
Nabors Industries, Inc.
5.750% 2/01/25		387,000		374,508
7.375% 5/15/27 (b)		2,040,000		1,941,121
Neptune Energy Bondco PLC
6.625% 5/15/25 (b)		6,763,000		6,751,029

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Occidental Petroleum Corp.
6.125% 1/01/31	$	1,607,000	$	1,631,748
6.200% 3/15/40		1,570,000		1,547,376
6.375% 9/01/28		2,015,000		2,048,362
6.450% 9/15/36		1,040,000		1,067,352
6.600% 3/15/46		801,000		824,670
7.500% 5/01/31		707,000		771,931
Parkland Corp.
4.625% 5/01/30 (b)		795,000		689,309
5.875% 7/15/27 (b)		2,479,000		2,391,760
Range Resources Corp.
8.250% 1/15/29		846,000		880,855
Southwestern Energy Co.
4.750% 2/01/32		380,000		334,908
5.375% 3/15/30		366,000		341,552
Sunoco LP/Sunoco Finance Corp.
5.875% 3/15/28		245,000		235,598
6.000% 4/15/27		753,000		741,889
Transocean Poseidon Ltd.
6.875% 2/01/27 (b)		159,250		157,060
Transocean, Inc.
7.250% 11/01/25 (b)		1,205,000		1,156,800
7.500% 1/15/26 (b)		931,000		884,450
				41,437,681
Oil & Gas Services — 0.7%
Weatherford International Ltd.
8.625% 4/30/30 (b)		2,835,000		2,878,211
Packaging & Containers — 1.8%
Ardagh Metal Packaging Finance USA LLC/Ardagh Metal Packaging Finance PLC
4.000% 9/01/29 (b)		389,000		308,086
Clydesdale Acquisition Holdings, Inc.
8.750% 4/15/30 (b)		1,744,000		1,539,470
Graham Packaging Co., Inc.
7.125% 8/15/28 (b)		787,000		671,901
Mauser Packaging Solutions Holding Co.
7.875% 8/15/26 (b)		2,895,000		2,876,207
9.250% 4/15/27 (b)		1,077,000		994,073
Trident TPI Holdings, Inc.
12.750% 12/31/28 (b)		527,000		546,499
				6,936,236
Pharmaceuticals — 2.5%
1375209 BC Ltd.
9.000% 1/30/28 (b)		816,000		818,040
AdaptHealth LLC
4.625% 8/01/29 (b)		1,000,000		798,170
5.125% 3/01/30 (b)		2,000,000		1,620,000
Bausch Health Cos., Inc.
4.875% 6/01/28 (b)		1,347,000		801,734
9.000% 12/15/25 (b)		870,000		758,701
11.000% 9/30/28 (b)		741,000		526,332
14.000% 10/15/30 (b)		286,000		170,170
Jazz Securities DAC
4.375% 1/15/29 (b)		1,247,000		1,112,561

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Organon & Co./Organon Foreign Debt Co.-Issuer BV
4.125% 4/30/28 (b)	$	1,343,000	$	1,191,954
5.125% 4/30/31 (b)		1,230,000		1,014,780
Perrigo Finance Unlimited Co.
4.650% STEP 6/15/30		1,262,000		1,116,748
				9,929,190
Pipelines — 6.3%
Antero Midstream Partners LP/Antero Midstream Finance Corp.
5.375% 6/15/29 (b)		1,051,000		976,569
CQP Holdco LP/BIP-V Chinook Holdco LLC
5.500% 6/15/31 (b)		2,124,000		1,894,422
Energy Transfer LP 5 yr. CMT + 5.306%
7.125% VRN (d)		700,000		593,545
EnLink Midstream LLC
5.375% 6/01/29		786,000		748,831
5.625% 1/15/28 (b)		449,000		434,490
EnLink Midstream Partners LP
4.150% 6/01/25		27,000		26,193
4.850% 7/15/26		277,000		267,305
5.050% 4/01/45		160,000		127,642
5.450% 6/01/47		706,000		580,336
5.600% 4/01/44		3,122,000		2,613,816
EQM Midstream Partners LP
4.500% 1/15/29 (b)		1,111,000		990,893
6.000% 7/01/25 (b)		339,000		335,257
6.500% 7/01/27 (b)		763,000		752,525
7.500% 6/01/27 (b)		832,000		839,962
7.500% 6/01/30 (b)		176,000		178,103
Genesis Energy LP/Genesis Energy Finance Corp.
6.250% 5/15/26 (c)		290,000		274,609
6.500% 10/01/25		2,411,000		2,374,339
8.000% 1/15/27		553,000		539,231
Harvest Midstream I LP
7.500% 9/01/28 (b)		1,911,000		1,894,643
ITT Holdings LLC
6.500% 8/01/29 (b)		4,327,000		3,645,411
NGL Energy Operating LLC/NGL Energy Finance Corp.
7.500% 2/01/26 (b)		2,530,000		2,491,725
Venture Global Calcasieu Pass LLC
3.875% 8/15/29 (b)		869,000		759,150
4.125% 8/15/31 (b)		994,000		854,806
Western Midstream Operating LP
5.450% 4/01/44		929,000		784,797
				24,978,600
Real Estate — 0.5%
Realogy Group LLC/Realogy Co.-Issuer Corp.
5.750% 1/15/29 (b)		2,591,000		1,938,619
Real Estate Investment Trusts (REITS) — 1.7%
Iron Mountain, Inc.
7.000% 2/15/29 (b)		915,000		916,539
Ladder Capital Finance Holdings LLLP/Ladder Capital Finance Corp.
4.750% 6/15/29 (b)		1,194,000		971,721
RLJ Lodging Trust LP
3.750% 7/01/26 (b)		1,238,000		1,135,865

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
4.000% 9/15/29 (b) (c)	$	829,000	$	694,276
Service Properties Trust
3.950% 1/15/28		359,000		281,158
4.375% 2/15/30		568,000		424,784
4.950% 2/15/27		284,000		242,811
5.500% 12/15/27		949,000		834,374
Uniti Group LP/Uniti Group Finance, Inc./CSL Capital LLC
4.750% 4/15/28 (b)		1,162,000		964,345
6.500% 2/15/29 (b)		560,000		396,300
				6,862,173
Retail — 3.3%
Asbury Automotive Group, Inc.
4.625% 11/15/29 (b)		993,000		881,410
Bath & Body Works, Inc.
6.750% 7/01/36		658,000		592,017
6.875% 11/01/35		1,478,000		1,352,353
Brinker International, Inc.
8.250% 7/15/30 (b)		989,000		974,491
Macy's Retail Holdings LLC
5.875% 4/01/29 (b) (c)		261,000		238,163
5.875% 3/15/30 (b) (c)		875,000		779,721
6.125% 3/15/32 (b)		553,000		483,803
Nordstrom, Inc.
5.000% 1/15/44		2,262,000		1,570,936
Sonic Automotive, Inc.
4.625% 11/15/29 (b)		1,085,000		908,626
4.875% 11/15/31 (b) (c)		1,260,000		1,033,938
Staples, Inc.
7.500% 4/15/26 (b)		1,049,000		866,383
10.750% 4/15/27 (b)		686,000		398,495
Suburban Propane Partners LP/Suburban Energy Finance Corp.
5.000% 6/01/31 (b)		1,271,000		1,064,017
Superior Plus LP/Superior General Partner, Inc.
4.500% 3/15/29 (b)		2,169,000		1,901,389
				13,045,742
Software — 1.3%
AthenaHealth Group, Inc.
6.500% 2/15/30 (b) (c)		1,906,000		1,604,166
Boxer Parent Co., Inc.
9.125% 3/01/26 (b)		158,000		157,210
Consensus Cloud Solutions, Inc.
6.000% 10/15/26 (b) (c)		1,761,000		1,598,106
6.500% 10/15/28 (b) (c)		267,000		228,285
Veritas U.S., Inc./Veritas Bermuda Ltd.
7.500% 9/01/25 (b)		2,028,000		1,645,551
				5,233,318
Telecommunications — 6.2%
Altice France Holding SA
10.500% 5/15/27 (b)		494,000		299,132
Altice France SA
5.125% 7/15/29 (b)		2,356,000		1,672,462
C&W Senior Financing DAC
6.875% 9/15/27 (b)		1,105,000		964,112

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Connect Finco SARL/Connect U.S. Finco LLC
6.750% 10/01/26 (b)	$	4,032,000	$	3,916,348
Frontier Communications Holdings LLC
5.000% 5/01/28 (b)		3,081,000		2,658,318
6.000% 1/15/30 (b) (c)		2,191,000		1,611,659
6.750% 5/01/29 (b) (c)		902,000		699,776
GoTo Group, Inc.
5.500% 9/01/27 (b)		760,000		418,094
Hughes Satellite Systems Corp.
6.625% 8/01/26		2,280,000		2,131,800
Intelsat Jackson Holdings SA
6.500% 3/15/30 (b)		1,079,000		982,275
Sprint Capital Corp.
6.875% 11/15/28		3,131,000		3,318,839
8.750% 3/15/32		4,688,000		5,665,950
				24,338,765
Transportation — 1.1%
Carriage Purchaser, Inc.
7.875% 10/15/29 (b)		1,473,000		1,107,229
Seaspan Corp.
5.500% 8/01/29 (b)		3,997,000		3,131,330
				4,238,559
TOTAL CORPORATE DEBT (Cost $392,895,531)				359,471,392
TOTAL BONDS & NOTES (Cost $400,923,134)				367,089,279
TOTAL LONG-TERM INVESTMENTS (Cost $400,923,134)				367,089,279
SHORT-TERM INVESTMENTS — 11.4%
Commercial Paper — 5.7%
Avangrid, Inc.
5.441% 7/20/23 (b)		2,000,000		1,994,067
Bayer Corp.
6.176% 9/14/23 (b)		4,000,000		3,954,341
Fidelity National Information Services, Inc.
5.545% 7/06/23 (b)		4,000,000		3,996,527
5.606% 7/12/23 (b)		1,500,000		1,497,375
Spire, Inc.
5.562% 7/06/23		3,000,000		2,997,395
TELUS Corp.
5.822% 10/26/23 (b)		3,000,000		2,943,734
VF Corp.
5.276% 7/05/23		5,000,000		4,996,344
				22,379,783
		Number of Shares
Investment of Cash Collateral from Securities Loaned — 5.2%
State Street Navigator Securities Lending Government Money Market Portfolio (e)		20,460,977		20,460,977

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Repurchase Agreement — 0.5%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (f)	$	2,035,706	$	2,035,706
TOTAL SHORT-TERM INVESTMENTS (Cost $44,876,589)				44,876,466
TOTAL INVESTMENTS — 104.2% (Cost $445,799,723) (g)				411,965,745
Other Assets/(Liabilities) — (4.2)%				(16,773,892)
NET ASSETS — 100.0%			$	395,191,853

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) All or a portion of the security represents unsettled bank loan commitments at June 30, 2023 where the rate will be determined at time of settlement.

(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, 2023, the aggregate market value of these securities amounted to $297,802,275 or 75.36% of net assets.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $20,121,915 or 5.09% of net assets. The Fund received $81,944 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) Security is perpetual and has no stated maturity date.

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

(f) Maturity value of $2,035,964. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $2,076,505.

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

MassMutual Balanced Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 65.2%
COMMON STOCK — 65.2%
Basic Materials — 1.3%
Chemicals — 0.8%
Air Products & Chemicals, Inc.		512	$	153,359
Albemarle Corp.		60		13,385
Dow, Inc.		4,485		238,871
DuPont de Nemours, Inc.		1,776		126,878
Ecolab, Inc.		486		90,731
International Flavors & Fragrances, Inc.		83		6,606
LyondellBasell Industries NV Class A		1,558		143,071
PPG Industries, Inc.		586		86,904
Sherwin-Williams Co.		397		105,412
				965,217
Iron & Steel — 0.4%
Nucor Corp.		3,053		500,631
Mining — 0.1%
Newmont Corp.		1,457		62,156
				1,528,004
Communications — 4.2%
Advertising — 0.1%
Omnicom Group, Inc.		1,310		124,646
Internet — 1.5%
Booking Holdings, Inc. (a)		308		831,702
CDW Corp.		356		65,326
DoorDash, Inc., Class A (a)		141		10,775
eBay, Inc.		2,500		111,725
Netflix, Inc. (a)		760		334,773
Palo Alto Networks, Inc. (a)		765		195,465
VeriSign, Inc. (a)		790		178,516
				1,728,282
Media — 0.3%
Fox Corp. Class A		5,871		199,614
Sirius XM Holdings, Inc.		1,318		5,971
Walt Disney Co. (a)		2,336		208,558
				414,143
Telecommunications — 2.3%
Arista Networks, Inc. (a)		447		72,441
Cisco Systems, Inc.		23,321		1,206,628
Corning, Inc.		1,920		67,277

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Motorola Solutions, Inc.		855	$	250,754
Verizon Communications, Inc.		28,910		1,075,163
				2,672,263
				4,939,334
Consumer, Cyclical — 6.5%
Apparel — 0.2%
NIKE, Inc. Class B		2,726		300,868
Auto Manufacturers — 0.4%
Cummins, Inc.		652		159,844
Ford Motor Co.		18,345		277,560
				437,404
Auto Parts & Equipment — 0.1%
Aptiv PLC (a)		588		60,029
Distribution & Wholesale — 0.3%
Copart, Inc. (a)		1,667		152,047
W.W. Grainger, Inc.		246		193,993
				346,040
Home Builders — 0.2%
D.R. Horton, Inc.		2,165		263,459
Lodging — 0.3%
Hilton Worldwide Holdings, Inc.		870		126,629
Las Vegas Sands Corp. (a)		1,126		65,308
Marriott International, Inc. Class A		802		147,319
				339,256
Retail — 5.0%
AutoZone, Inc. (a)		202		503,659
Best Buy Co., Inc.		1,376		112,763
Chipotle Mexican Grill, Inc. (a)		54		115,506
Dollar General Corp.		505		85,739
Dollar Tree, Inc. (a)		407		58,405
Genuine Parts Co.		686		116,092
Home Depot, Inc.		4,295		1,334,199
Lowe's Cos., Inc.		4,723		1,065,981
Lululemon Athletica, Inc. (a)		296		112,036
O'Reilly Automotive, Inc. (a)		597		570,314
Ross Stores, Inc.		1,672		187,481
Target Corp.		1,139		150,234
TJX Cos., Inc.		7,961		675,013
Ulta Beauty, Inc. (a)		574		270,122
Walgreens Boots Alliance, Inc.		976		27,806
Yum! Brands, Inc.		2,993		414,680
				5,800,030
				7,547,086

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Consumer, Non-cyclical — 15.2%
Beverages — 1.8%
Brown-Forman Corp. Class B		329	$	21,971
Coca-Cola Co.		10,422		627,613
Constellation Brands, Inc. Class A		541		133,156
Keurig Dr Pepper, Inc.		2,199		68,763
Monster Beverage Corp. (a)		1,969		113,099
PepsiCo, Inc.		5,863		1,085,945
				2,050,547
Biotechnology — 1.7%
Amgen, Inc.		1,607		356,786
Biogen, Inc. (a)		414		117,928
BioMarin Pharmaceutical, Inc. (a)		179		15,516
BioNTech SE ADR (a)		687		74,148
Gilead Sciences, Inc.		8,584		661,569
Illumina, Inc. (a)		82		15,374
Incyte Corp. (a)		548		34,113
Moderna, Inc. (a)		223		27,094
Regeneron Pharmaceuticals, Inc. (a)		416		298,913
Vertex Pharmaceuticals, Inc. (a)		1,132		398,362
				1,999,803
Commercial Services — 0.8%
Automatic Data Processing, Inc.		760		167,040
Block, Inc. (a)		240		15,977
Cintas Corp.		230		114,328
CoStar Group, Inc. (a)		542		48,238
Global Payments, Inc.		1,273		125,416
Moody's Corp.		263		91,450
PayPal Holdings, Inc. (a)		2,267		151,277
S&P Global, Inc.		305		122,272
Verisk Analytics, Inc.		424		95,837
				931,835
Cosmetics & Personal Care — 1.5%
Colgate-Palmolive Co.		3,052		235,126
Estee Lauder Cos., Inc. Class A		315		61,860
Procter & Gamble Co.		9,603		1,457,159
				1,754,145
Food — 1.6%
Campbell Soup Co.		1,604		73,319
General Mills, Inc.		8,113		622,267
Hershey Co.		1,827		456,202
Kellogg Co.		1,159		78,116
Kroger Co.		4,632		217,704
McCormick & Co., Inc.		260		22,680
Mondelez International, Inc. Class A		5,305		386,947
Sysco Corp.		537		39,845
				1,897,080
Health Care – Products — 2.0%
Abbott Laboratories		5,024		547,717

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Align Technology, Inc. (a)		135	$	47,741
Baxter International, Inc.		506		23,053
Boston Scientific Corp. (a)		5,698		308,205
Danaher Corp.		782		187,680
Edwards Lifesciences Corp. (a)		696		65,654
IDEXX Laboratories, Inc. (a)		154		77,343
Intuitive Surgical, Inc. (a)		493		168,576
Medtronic PLC		3,117		274,608
ResMed, Inc.		137		29,935
Steris PLC		93		20,923
Thermo Fisher Scientific, Inc.		768		400,704
Waters Corp. (a)		91		24,255
West Pharmaceutical Services, Inc.		100		38,247
Zimmer Biomet Holdings, Inc.		959		139,630
				2,354,271
Health Care – Services — 1.7%
Centene Corp. (a)		1,200		80,940
Elevance Health, Inc.		674		299,452
Humana, Inc.		539		241,003
IQVIA Holdings, Inc. (a)		204		45,853
Laboratory Corp. of America Holdings		239		57,678
Quest Diagnostics, Inc.		384		53,975
UnitedHealth Group, Inc.		2,475		1,189,584
				1,968,485
Household Products & Wares — 0.3%
Church & Dwight Co., Inc.		610		61,140
Clorox Co.		420		66,797
Kimberly-Clark Corp.		1,329		183,482
				311,419
Pharmaceuticals — 3.8%
AmerisourceBergen Corp.		529		101,796
Becton Dickinson & Co.		644		170,022
Bristol-Myers Squibb Co.		10,738		686,695
Cardinal Health, Inc.		1,102		104,216
Cigna Group		1,118		313,711
CVS Health Corp.		2,663		184,093
Dexcom, Inc. (a)		473		60,785
Eli Lilly & Co.		1,876		879,807
McKesson Corp.		432		184,598
Merck & Co., Inc.		11,496		1,326,523
Pfizer, Inc.		6,793		249,167
Zoetis, Inc.		999		172,038
				4,433,451
				17,701,036
Energy — 2.5%
Energy – Alternate Sources — 0.1%
Enphase Energy, Inc. (a)		141		23,614
Oil & Gas — 1.3%
Marathon Petroleum Corp.		7,363		858,526

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Valero Energy Corp.		5,663	$	664,270
				1,522,796
Oil & Gas Services — 0.3%
Baker Hughes Co.		3,600		113,796
Halliburton Co.		3,437		113,387
Schlumberger NV		2,738		134,490
				361,673
Pipelines — 0.8%
Cheniere Energy, Inc.		2,761		420,666
Kinder Morgan, Inc.		13,719		236,241
ONEOK, Inc.		1,767		109,059
Williams Cos., Inc.		5,739		187,264
				953,230
				2,861,313
Financial — 7.5%
Banks — 0.5%
Fifth Third Bancorp		1,667		43,692
Northern Trust Corp.		487		36,106
Regions Financial Corp.		2,704		48,185
State Street Corp.		1,359		99,452
The Bank of New York Mellon Corp.		6,238		277,716
Truist Financial Corp.		4,130		125,345
				630,496
Diversified Financial Services — 2.7%
American Express Co.		2,520		438,984
Ameriprise Financial, Inc.		408		135,521
BlackRock, Inc.		299		206,651
Charles Schwab Corp.		1,089		61,724
CME Group, Inc.		753		139,523
Discover Financial Services		3,248		379,529
Intercontinental Exchange, Inc.		1,088		123,031
Nasdaq, Inc.		834		41,575
T. Rowe Price Group, Inc.		729		81,663
Visa, Inc. Class A		6,494		1,542,195
				3,150,396
Insurance — 2.8%
Aflac, Inc.		2,429		169,544
American International Group, Inc.		2,496		143,620
Aon PLC Class A		821		283,409
Arch Capital Group Ltd. (a)		4,023		301,122
Arthur J Gallagher & Co.		703		154,358
Chubb Ltd.		2,322		447,124
Hartford Financial Services Group, Inc.		2,109		151,890
Marsh & McLennan Cos., Inc.		1,926		362,242
MetLife, Inc.		3,304		186,775
Principal Financial Group, Inc.		1,174		89,036
Progressive Corp.		3,389		448,602
Prudential Financial, Inc.		1,239		109,305

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
The Allstate Corp.		523	$	57,028
Travelers Cos., Inc.		1,647		286,018
Willis Towers Watson PLC		561		132,115
				3,322,188
Private Equity — 0.1%
Blackstone, Inc.		884		82,186
KKR & Co., Inc.		257		14,392
				96,578
Real Estate — 0.1%
CBRE Group, Inc. Class A (a)		1,053		84,988
Real Estate Investment Trusts (REITS) — 1.3%
Alexandria Real Estate Equities, Inc.		281		31,891
American Tower Corp.		618		119,855
AvalonBay Communities, Inc.		364		68,894
Crown Castle, Inc.		647		73,719
Digital Realty Trust, Inc.		491		55,910
Equinix, Inc.		242		189,714
Equity Residential		789		52,050
Extra Space Storage, Inc.		176		26,198
Prologis, Inc.		1,341		164,447
Public Storage		580		169,290
Realty Income Corp.		1,896		113,362
SBA Communications Corp.		131		30,361
Simon Property Group, Inc.		669		77,256
Ventas, Inc.		875		41,361
VICI Properties, Inc.		3,195		100,419
Welltower, Inc.		1,188		96,097
Weyerhaeuser Co.		2,537		85,015
				1,495,839
				8,780,485
Industrial — 4.6%
Building Materials — 0.5%
Carrier Global Corp.		2,427		120,646
Johnson Controls International PLC		2,113		143,980
Martin Marietta Materials, Inc.		127		58,635
Trane Technologies PLC		832		159,128
Vulcan Materials Co.		301		67,858
				550,247
Electrical Components & Equipment — 0.1%
AMETEK, Inc.		889		143,911
Electronics — 0.8%
Agilent Technologies, Inc.		562		67,581
Amphenol Corp. Class A		2,366		200,992
Garmin Ltd.		649		67,684
Honeywell International, Inc.		1,078		223,685
Keysight Technologies, Inc. (a)		554		92,767
Mettler-Toledo International, Inc. (a)		88		115,424

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
TE Connectivity Ltd.		1,387	$	194,402
				962,535
Environmental Controls — 0.4%
Republic Services, Inc.		841		128,816
Waste Connections, Inc.		1,251		178,805
Waste Management, Inc.		1,352		234,464
				542,085
Machinery – Diversified — 0.6%
Deere & Co.		1,076		435,985
Otis Worldwide Corp.		1,637		145,709
Rockwell Automation, Inc.		252		83,021
				664,715
Miscellaneous - Manufacturing — 0.6%
Eaton Corp. PLC		1,302		261,832
Illinois Tool Works, Inc.		1,597		399,506
				661,338
Packaging & Containers — 0.1%
Amcor PLC		5,289		52,784
Ball Corp.		331		19,268
				72,052
Transportation — 1.5%
CSX Corp.		10,169		346,763
Expeditors International of Washington, Inc.		1,824		220,941
FedEx Corp.		867		214,929
Norfolk Southern Corp.		766		173,698
Union Pacific Corp.		1,934		395,735
United Parcel Service, Inc. Class B		2,347		420,700
				1,772,766
				5,369,649
Technology — 21.3%
Computers — 7.0%
Accenture PLC Class A		2,136		659,127
Apple, Inc.		33,131		6,426,420
Cognizant Technology Solutions Corp. Class A		2,354		153,669
Fortinet, Inc. (a)		2,575		194,644
Hewlett Packard Enterprise Co.		7,996		134,333
HP, Inc.		3,565		109,481
International Business Machines Corp.		3,750		501,788
NetApp, Inc.		603		46,069
				8,225,531
Office & Business Equipment — 0.0%
Zebra Technologies Corp. Class A (a)		72		21,300
Semiconductors — 5.9%
Advanced Micro Devices, Inc. (a)		1,340		152,639

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Applied Materials, Inc.		4,262	$	616,030
Broadcom, Inc.		1,917		1,662,863
Intel Corp.		5,748		192,213
KLA Corp.		688		333,694
Lam Research Corp.		600		385,716
Marvell Technology, Inc.		1,060		63,367
Micron Technology, Inc.		2,702		170,523
NVIDIA Corp.		5,355		2,265,272
ON Semiconductor Corp. (a)		1,360		128,629
Texas Instruments, Inc.		4,838		870,937
				6,841,883
Software — 8.4%
Adobe, Inc. (a)		1,320		645,467
ANSYS, Inc. (a)		304		100,402
Autodesk, Inc. (a)		490		100,259
Cadence Design Systems, Inc. (a)		1,142		267,822
Electronic Arts, Inc.		1,331		172,631
Fidelity National Information Services, Inc.		929		50,816
Fiserv, Inc. (a)		3,099		390,939
HubSpot, Inc. (a)		55		29,265
Intuit, Inc.		698		319,817
Microsoft Corp.		15,438		5,257,256
MSCI, Inc.		204		95,735
Oracle Corp.		8,620		1,026,556
Paychex, Inc.		514		57,501
Salesforce, Inc. (a)		2,425		512,305
ServiceNow, Inc. (a)		507		284,919
Snowflake, Inc. Class A (a)		167		29,389
Splunk, Inc. (a)		175		18,566
Synopsys, Inc. (a)		440		191,580
Veeva Systems, Inc. Class A (a)		114		22,541
VMware, Inc. Class A (a)		1,006		144,552
Workday, Inc. Class A (a)		446		100,747
Zoom Video Communications, Inc. Class A (a)		391		26,541
				9,845,606
				24,934,320
Utilities — 2.1%
Electric — 2.1%
Ameren Corp.		866		70,726
American Electric Power Co., Inc.		1,510		127,142
Avangrid, Inc.		68		2,562
CMS Energy Corp.		608		35,720
Consolidated Edison, Inc.		3,440		310,976
Dominion Energy, Inc.		767		39,723
DTE Energy Co.		599		65,902
Duke Energy Corp.		2,723		244,362
Edison International		1,305		90,632
Entergy Corp.		628		61,148
Eversource Energy		1,386		98,295
Exelon Corp.		3,905		159,090
FirstEnergy Corp.		2,027		78,810
NextEra Energy, Inc.		2,425		179,935
Public Service Enterprise Group, Inc.		8,426		527,552
Sempra Energy		384		55,907

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
WEC Energy Group, Inc.		1,206	$	106,418
Xcel Energy, Inc.		2,570		159,777
				2,414,677
Water — 0.0%
American Water Works Co., Inc.		291		41,540
				2,456,217
TOTAL COMMON STOCK (Cost $68,770,411)				76,117,444
TOTAL EQUITIES (Cost $68,770,411)				76,117,444
	Principal Amount
BONDS & NOTES — 36.8%
CORPORATE DEBT — 10.9%
Agriculture — 0.1%
Archer-Daniels-Midland Co.
2.700% 9/15/51	$	49,000		33,041
Bunge Ltd. Finance Corp.
1.630% 8/17/25		13,000		11,961
3.250% 8/15/26		47,000		44,212
Cargill, Inc.
3.125% 5/25/51 (b)		74,000		53,580
				142,794
Airlines — 0.1%
American Airlines 2021-1 Class A Pass Through Trust
2.875% 1/11/36		67,150		56,075
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.500% 10/20/25 (b)		69,162		67,654
				123,729
Auto Manufacturers — 0.1%
General Motors Financial Co., Inc.
5.800% 6/23/28		72,000		71,725
PACCAR Financial Corp.
4.600% 1/10/28		91,000		91,308
				163,033
Banks — 2.9%
Australia & New Zealand Banking Group Ltd. 5 yr. CMT + 1.700%
2.570% VRN 11/25/35 (b)		225,000		170,913
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		162,000		123,935
SOFR + 1.330% 2.972% VRN 2/04/33		66,000		55,019
SOFR + 1.580% 3.311% VRN 4/22/42		65,000		49,527
4.183% 11/25/27		41,000		38,949
3 mo. USD Term SOFR + 2.076% 4.244% VRN 4/24/38		23,000		20,197
3 mo. USD Term SOFR + 1.572% 4.271% VRN 7/23/29		18,000		17,078
4.750% 4/21/45		63,000		57,421

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SOFR + 1.910% 5.288% VRN 4/25/34	$	69,000	$	68,359
5 yr. CMT + 3.231% 6.125% VRN 12/31/99 (c)		162,000		158,298
7.750% 5/14/38		20,000		23,737
Bank of New York Mellon Corp. 5 yr. CMT + 2.630%
3.750% VRN (c)		156,000		128,115
Bank of Nova Scotia
4.500% 12/16/25		36,000		34,749
Citigroup, Inc.
SOFR + .528% 1.281% VRN 11/03/25		55,000		51,523
4.450% 9/29/27		27,000		25,780
SOFR + 2.086% 4.910% VRN 5/24/33		71,000		68,704
5.500% 9/13/25		54,000		53,688
5.875% 1/30/42		18,000		18,871
6.000% 10/31/33		16,000		16,441
6.625% 6/15/32		14,000		14,813
8.125% 7/15/39		14,000		17,913
Cooperatieve Rabobank UA 1 yr. CMT + .550%
1.106% VRN 2/24/27 (b)		250,000		220,959
Goldman Sachs Group, Inc.
SOFR + .798% 1.431% VRN 3/09/27		227,000		202,826
SOFR + 1.090% 1.992% VRN 1/27/32		135,000		106,275
4.250% 10/21/25		32,000		30,838
5.950% 1/15/27		72,000		72,993
6.750% 10/01/37		32,000		34,417
JP Morgan Chase & Co.
3 mo. USD Term SOFR + 1.422% 3.702% VRN 5/06/30		320,000		293,257
SOFR + 1.845% 5.350% VRN 6/01/34		53,000		53,422
5.600% 7/15/41		41,000		42,639
Mizuho Financial Group, Inc.
2.564% 9/13/31		200,000		157,341
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		203,000		154,024
SOFR + 1.485% 3.217% VRN 4/22/42		44,000		33,365
3 mo. USD Term SOFR + 1.890% 4.431% VRN 1/23/30		79,000		75,163
SOFR + 1.890% 5.250% VRN 4/21/34		73,000		72,084
National Australia Bank Ltd.
6.429% 1/12/33 (b)		80,000		81,030
PNC Financial Services Group, Inc.
SOFR + 1.850% 4.626% VRN 6/06/33		108,000		99,347
SOFR + 1.933% 5.068% VRN 1/24/34		54,000		51,784
SOFR + 1.841% 5.582% VRN 6/12/29		85,000		84,600
State Street Corp. SOFR + 1.890%
5.159% VRN 5/18/34		74,000		73,557
Truist Financial Corp. SOFR + 2.361%
5.867% VRN 6/08/34		43,000		43,018
U.S. Bancorp
SOFR + 1.600% 4.839% VRN 2/01/34		79,000		73,788
SOFR + 2.020% 5.775% VRN 6/12/29		66,000		65,980
Wells Fargo & Co. SOFR + 2.020%
5.389% VRN 4/24/34		67,000		66,572
				3,403,309
Biotechnology — 0.5%
Amgen, Inc.
2.200% 2/21/27		347,000		315,261
5.250% 3/02/33		54,000		54,069
5.650% 3/02/53		77,000		77,978

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CSL Finance PLC
4.250% 4/27/32 (b)	$	65,000	$	61,538
4.750% 4/27/52 (b)		27,000		25,142
				533,988
Commercial Services — 0.3%
Element Fleet Management Corp.
1.600% 4/06/24 (b)		21,000		20,250
Moody's Corp.
4.250% 2/01/29		209,000		201,145
PayPal Holdings, Inc.
3.250% 6/01/50		27,000		19,575
Triton Container International Ltd.
3.150% 6/15/31 (b)		100,000		76,939
				317,909
Computers — 0.2%
Apple, Inc.
1.650% 5/11/30		46,000		38,727
2.650% 5/11/50		27,000		18,795
3.000% 6/20/27		177,000		167,605
				225,127
Diversified Financial Services — 0.4%
Air Lease Corp.
2.200% 1/15/27		64,000		56,751
Ally Financial, Inc.
2.200% 11/02/28		59,000		47,089
Brookfield Finance, Inc.
3.900% 1/25/28		99,000		91,659
Charles Schwab Corp. 10 yr. CMT + 3.079%
4.000% VRN (c)		93,000		67,867
LSEGA Financing PLC
1.375% 4/06/26 (b)		218,000		194,362
				457,728
Electric — 0.1%
Nevada Power Co.
6.650% 4/01/36		20,000		21,571
Xcel Energy, Inc.
6.500% 7/01/36		99,000		105,509
				127,080
Entertainment — 0.1%
Magallanes, Inc. Co.
5.391% 3/15/62		37,000		30,154
Warnermedia Holdings, Inc.
5.141% 3/15/52		49,000		39,898
				70,052
Environmental Controls — 0.0%
Republic Services, Inc.
5.000% 4/01/34		28,000		27,937

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Food — 0.3%
Conagra Brands, Inc.
4.850% 11/01/28	$	170,000	$	165,779
General Mills, Inc.
3.000% 2/01/51		112,000		79,093
4.950% 3/29/33		48,000		47,571
Ingredion, Inc.
3.200% 10/01/26		25,000		23,341
Mars, Inc.
3.950% 4/01/49 (b)		67,000		56,471
				372,255
Health Care – Services — 0.6%
HCA, Inc.
5.000% 3/15/24		328,000		325,893
Kaiser Foundation Hospitals
2.810% 6/01/41		110,000		80,804
3.002% 6/01/51		80,000		56,004
Mayo Clinic
3.196% 11/15/61		106,000		71,772
Providence St Joseph Health Obligated Group
2.700% 10/01/51		93,000		55,700
UnitedHealth Group, Inc.
3.125% 5/15/60		36,000		25,087
5.050% 4/15/53		20,000		19,879
5.875% 2/15/53		25,000		27,768
				662,907
Insurance — 0.5%
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48		104,000		101,066
Arch Capital Finance LLC
5.031% 12/15/46		27,000		24,029
Arch Capital Group Ltd.
3.635% 6/30/50		49,000		35,904
Athene Holding Ltd.
3.950% 5/25/51		16,000		10,709
Brighthouse Financial, Inc.
3.850% 12/22/51		68,000		42,915
GA Global Funding Trust
1.625% 1/15/26 (b)		37,000		32,824
Jackson Financial, Inc.
5.170% 6/08/27		78,000		74,280
Marsh & McLennan Cos., Inc.
5.450% 3/15/53		16,000		16,284
New York Life Global Funding
4.550% 1/28/33 (b)		47,000		45,274
New York Life Insurance Co.
3.750% 5/15/50 (b)		23,000		17,568
Prudential Financial, Inc.
5 yr. CMT + 3.035% 3.700% VRN 10/01/50		18,000		15,182
3 mo. USD LIBOR + 2.665% 5.700% VRN 9/15/48		99,000		95,564
Reinsurance Group of America, Inc.
3.150% 6/15/30		49,000		41,993
3.900% 5/15/29		54,000		48,994

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
USF&G Capital I
8.500% 12/15/45 (b)	$	35,000	$	38,515
				641,101
Internet — 0.1%
Alphabet, Inc.
2.250% 8/15/60		32,000		19,465
Prosus NV
3.832% 2/08/51 (b)		233,000		143,150
				162,615
Investment Companies — 0.1%
Blackstone Secured Lending Fund
2.750% 9/16/26		158,000		138,085
Media — 0.4%
Charter Communications Operating LLC/Charter Communications Operating Capital
3.500% 6/01/41		119,000		80,492
3.850% 4/01/61		80,000		48,386
6.484% 10/23/45		32,000		30,084
Comcast Corp.
2.937% 11/01/56		43,000		28,003
3.400% 7/15/46		41,000		31,115
3.969% 11/01/47		23,000		19,049
Discovery Communications LLC
3.950% 3/20/28		56,000		52,065
FactSet Research Systems, Inc.
3.450% 3/01/32		67,000		56,993
Time Warner Cable LLC
6.750% 6/15/39		27,000		25,949
Walt Disney Co.
3.600% 1/13/51		58,000		46,152
				418,288
Oil & Gas — 0.1%
BP Capital Markets America, Inc.
3.379% 2/08/61		95,000		67,613
BP Capital Markets PLC 5 yr. CMT + 4.036%
4.375% VRN (c)		58,000		55,637
				123,250
Packaging & Containers — 0.3%
Berry Global, Inc.
1.570% 1/15/26		48,000		43,283
Sealed Air Corp.
1.573% 10/15/26 (b)		44,000		38,279
Silgan Holdings, Inc.
1.400% 4/01/26 (b)		49,000		43,289
WRKCo, Inc.
3.000% 6/15/33		27,000		21,957
4.650% 3/15/26		192,000		186,285
				333,093

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pharmaceuticals — 0.4%
AbbVie, Inc.
4.700% 5/14/45	$	67,000	$	61,213
Becton Dickinson & Co.
4.685% 12/15/44		21,000		19,038
Bristol-Myers Squibb Co.
4.350% 11/15/47		27,000		24,413
Cigna Group
4.800% 7/15/46		27,000		24,770
CVS Health Corp.
5.875% 6/01/53		17,000		17,433
6.125% 9/15/39		8,000		8,301
Eli Lilly & Co.
4.950% 2/27/63		33,000		33,677
Merck & Co., Inc.
5.000% 5/17/53		81,000		82,056
Pfizer Investment Enterprises Pte. Ltd.
4.450% 5/19/28		93,000		91,409
4.750% 5/19/33		61,000		60,770
				423,080
Pipelines — 0.8%
Enterprise Products Operating LLC
3 mo. USD Term SOFR + 3.295% 5.250% VRN 8/16/77		41,000		35,853
3 mo. USD Term SOFR + 2.832% 5.375% VRN 2/15/78		27,000		22,336
Kinder Morgan, Inc.
3.250% 8/01/50		100,000		64,487
4.800% 2/01/33		77,000		72,621
MPLX LP
1.750% 3/01/26		365,000		331,319
4.500% 4/15/38		27,000		23,240
5.650% 3/01/53		7,000		6,540
ONEOK, Inc.
6.350% 1/15/31		200,000		205,988
Sabine Pass Liquefaction LLC
4.500% 5/15/30		100,000		95,056
Williams Cos., Inc.
3.500% 10/15/51		45,000		31,035
5.300% 8/15/52		40,000		36,880
				925,355
Real Estate — 0.1%
CBRE Services, Inc.
2.500% 4/01/31		121,000		97,323
Real Estate Investment Trusts (REITS) — 0.8%
Alexandria Real Estate Equities, Inc.
2.950% 3/15/34		78,000		61,521
5.150% 4/15/53		20,000		17,923
American Tower Corp.
1.600% 4/15/26		96,000		86,093
2.700% 4/15/31		119,000		98,678
Brixmor Operating Partnership LP
2.250% 4/01/28		24,000		20,161
Crown Castle International Corp.
2.500% 7/15/31		88,000		72,293
3.700% 6/15/26		243,000		230,823

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Crown Castle, Inc.
5.200% 2/15/49	$	11,000	$	10,203
Extra Space Storage LP
2.350% 3/15/32		65,000		50,795
Host Hotels & Resorts LP
3.500% 9/15/30		84,000		71,157
Kimco Realty OP LLC
2.250% 12/01/31		58,000		45,137
Kite Realty Group LP
4.000% 10/01/26		110,000		98,606
Prologis LP
4.875% 6/15/28		75,000		74,320
Realty Income Corp.
4.850% 3/15/30		30,000		29,001
				966,711
Retail — 0.8%
Advance Auto Parts, Inc.
1.750% 10/01/27		13,000		10,817
3.900% 4/15/30		323,000		275,205
AutoZone, Inc.
1.650% 1/15/31		41,000		31,994
Dollar General Corp.
4.250% 9/20/24		83,000		81,400
Home Depot, Inc.
2.375% 3/15/51		48,000		29,739
2.700% 4/15/30		97,000		86,179
Lowe's Cos., Inc.
3.000% 10/15/50		90,000		58,989
McDonald's Corp.
3.300% 7/01/25		182,000		175,449
Starbucks Corp.
4.450% 8/15/49		86,000		75,938
Target Corp.
4.800% 1/15/53		39,000		37,332
Walmart, Inc.
4.500% 4/15/53		67,000		65,343
				928,385
Semiconductors — 0.3%
Microchip Technology, Inc.
0.983% 9/01/24		49,000		46,284
Micron Technology, Inc.
2.703% 4/15/32		75,000		59,165
4.185% 2/15/27		200,000		191,621
Skyworks Solutions, Inc.
1.800% 6/01/26		36,000		32,155
				329,225
Software — 0.3%
Electronic Arts, Inc.
2.950% 2/15/51		42,000		28,412
Microsoft Corp.
2.921% 3/17/52		80,000		59,517
Oracle Corp.
3.600% 4/01/40		197,000		152,401

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
5.550% 2/06/53	$	15,000	$	14,525
6.900% 11/09/52		53,000		59,485
Workday, Inc.
3.800% 4/01/32		50,000		45,014
				359,354
Telecommunications — 0.2%
T-Mobile USA, Inc.
5.050% 7/15/33		80,000		78,552
Verizon Communications, Inc.
3.700% 3/22/61		47,000		34,179
3.875% 2/08/29		180,000		168,820
				281,551
Transportation — 0.0%
CSX Corp.
4.750% 11/15/48		18,000		16,652
TOTAL CORPORATE DEBT (Cost $14,968,529)				12,771,916
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 3.7%
Automobile Asset-Backed Securities — 0.5%
Avis Budget Rental Car Funding AESOP LLC, Series 2021-2A, Class A
1.660% 2/20/28 (b)		150,000		130,422
Enterprise Fleet Financing LLC, Series 2021-3, Class A3
1.220% 8/20/27 (b)		234,000		213,383
Hyundai Auto Receivables Trust, Series 2021-C, Class A4
1.030% 12/15/27		140,000		127,509
Toyota Auto Receivables Owner Trust, Series 2021-D, Class A4
1.020% 3/15/27		70,000		63,472
				534,786
Commercial Mortgage-Backed Securities — 1.1%
Bank
Series 2019-BN17, Class B, 4.128% VRN 4/15/52 (d)		29,000		23,933
Series 2019-BN16, Class AS, 4.267% 2/15/52		31,333		28,356
Series 2019-BN16, Class B, 4.438% VRN 2/15/52 (d)		24,330		20,503
BBCMS Mortgage Trust, Series 2020-C7, Class AS
2.444% 4/15/53		57,000		42,483
Benchmark Mortgage Trust
Series 2019-B14, Class AS, 3.352% 12/15/62		150,000		123,699
Series 2019-B9, Class AAB, 3.933% 3/15/52		274,000		259,873
BX Commercial Mortgage Trust
Series 2021-VOLT , Class C, 1 mo. USD LIBOR + .700% 5.893% FRN 9/15/36 (b)		115,000		110,834
Series 2021-VOLT , Class C, 1 mo. USD LIBOR + 1.100% 6.293% FRN 9/15/36 (b)		100,000		95,003
Citigroup Commercial Mortgage Trust, Series 2017-C4, Class C,
4.315% VRN 10/12/50 (d)		70,000		56,793
Commercial Mortgage Pass-Through Certificates, Series 2014-LC17, Class C,
4.694% VRN 10/10/47 (d)		100,000		88,609
GS Mortgage Securities Trust
Series 2020-GC45, Class A5, 2.911% 2/13/53		140,000		119,825
Series 2017-GS6, Class B, 3.869% 5/10/50		79,000		61,620

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Life Mortgage Trust
Series 2021-BMR , Class A, 1 mo. USD Term SOFR + .814% 5.962% FRN 3/15/38 (b)	$	98,297	$	95,781
Series 2021-BMR , Class B, 1 mo. USD Term SOFR + .994% 6.142% FRN 3/15/38 (b)		98,297		95,351
Morgan Stanley Capital I Trust, Series 2018-H3, Class B,
4.620% VRN 7/15/51 (d)		20,000		17,194
Wells Fargo Commercial Mortgage Trust
Series 2018-C45, Class AS, 4.405% VRN 6/15/51 (d)		30,000		26,913
Series 2018-C45, Class B, 4.556% 6/16/51		10,000		8,474
				1,275,244
Other Asset-Backed Securities — 0.4%
AMSR Trust, Series 2021-SFR3, Class B
1.726% 10/17/38 (b)		130,000		112,569
Dllmt LLC, Series 2021-1A, Class A4
1.240% 6/20/29 (b)		150,000		138,091
MVW LLC, Series 2021-2A, Class A
1.430% 5/20/39 (b)		183,006		161,357
Progress Residential Trust, Series 2021-SFR10, Class A
2.393% 12/17/40 (b)		99,524		84,608
				496,625
Whole Loan Collateral Collateralized Mortgage Obligations — 1.7%
Angel Oak Mortgage Trust
Series 2021-8, Class A1, 1.820% VRN 11/25/66 (b) (d)		225,996		189,355
Series 2022-1, Class A1, 2.881% STEP 12/25/66 (b)		235,865		207,048
Bayview MSR Opportunity Master Fund Trust
Series 2021-5, Class A2, 2.500% VRN 11/25/51 (b) (d)		130,203		104,137
Series 2021-5, Class A1, 3.000% VRN 11/25/51 (b) (d)		106,780		89,399
Ellington Financial Mortgage Trust, Series 2022-3, Class A1,
5.000% STEP 8/25/67 (b)		209,574		205,677
Flagstar Mortgage Trust, Series 2021-11IN, Class A6,
2.500% VRN 11/25/51 (b) (d)		223,954		190,617
Imperial Fund Mortgage Trust, Series 2021-NQM3, Class A1,
1.595% VRN 11/25/56 (b) (d)		144,770		118,207
JP Morgan Mortgage Trust
Series 2021-LTV2, Class A1, 2.520% VRN 5/25/52 (b) (d)		239,418		193,880
Series 2022-8, Class A4A, 4.000% VRN 1/25/53 (b) (d)		149,464		137,985
Onslow Bay Financial LLC, Series 2022-NQM1, Class A1,
2.305% VRN 11/25/61 (b) (d)		220,620		184,881
Starwood Mortgage Residential Trust
Series 2021-6, Class A1, 1.920% VRN 11/25/66 (b) (d)		242,863		200,998
Series 2022-1, Class A1, 2.447% VRN 12/25/66 (b) (d)		264,603		224,022
				2,046,206
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $5,030,261)				4,352,861
U.S. Government Agency Obligations and Instrumentalities (e) — 8.9%
Pass-Through Securities — 8.9%
Federal Home Loan Mortgage Corp.
Pool #RA6233 2.000% 11/01/51		500,826		408,753
Pool #SD8212 2.500% 5/01/52		749,622		635,604
Pool #SD8174 3.000% 10/01/51		412,670		364,099
Pool #RA7484 4.000% 6/01/52		448,258		420,991

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #SD1351 4.500% 7/01/52	$	401,678	$	386,134
Pool #SD1628 5.000% 9/01/52		409,933		402,690
Federal National Mortgage Association
Pool #CB1787 2.000% 10/01/51		487,453		397,839
Pool #CB1782 2.000% 10/01/51		739,120		603,239
Pool #MA4562 2.000% 3/01/52		937,279		764,676
Pool #MA4361 2.500% 6/01/36		287,864		262,594
Pool #CB2074 2.500% 11/01/51		382,278		324,522
Pool #FS2635 2.500% 5/01/52		460,517		392,667
Pool #BO7245 3.000% 1/01/50		279,849		248,332
Pool #FS2600 3.000% 5/01/52		482,892		427,037
Pool #BU8819 3.500% 5/01/52		473,218		431,988
Pool #CB3859 4.000% 6/01/52		237,357		222,919
Pool #CB4404 5.000% 8/01/52		406,038		398,483
Uniform Mortgage-Backed Security TBA
2.000% 7/18/38 (f)		1,500,000		1,329,176
2.500% 7/13/53 (f)		485,000		411,018
3.000% 7/13/53 (f)		400,000		351,937
3.500% 7/13/53 (f)		500,000		455,430
4.000% 7/13/53 (f)		250,000		234,551
4.500% 7/13/53 (f)		511,000		491,039
				10,365,718
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $11,047,125)				10,365,718
U.S. TREASURY OBLIGATIONS — 13.3%
U.S. Treasury Bonds & Notes — 13.3%
U.S. Treasury Bonds
2.250% 8/15/49		873,900		634,619
3.625% 2/15/53		934,600		895,689
3.875% 5/15/43		1,598,200		1,560,470
U.S. Treasury Notes
0.375% 4/30/25		1,243,600		1,144,153
2.750% 4/30/27		1,700,000		1,605,335
2.875% 4/30/29		1,050,000		984,293
3.375% 5/15/33		1,422,200		1,372,011
3.500% 1/31/30		548,000		531,615
3.500% 4/30/30		607,000		589,180
3.500% 2/15/33		450,000		438,008
3.625% 5/31/28		1,696,500		1,659,044
3.750% 5/31/30		1,394,400		1,374,532
4.125% 6/15/26		1,026,400		1,016,049
4.250% 5/31/25		1,745,600		1,723,495
				15,528,493
TOTAL U.S. TREASURY OBLIGATIONS (Cost $16,082,809)				15,528,493
TOTAL BONDS & NOTES (Cost $47,128,724)				43,018,988
TOTAL LONG-TERM INVESTMENTS (Cost $115,899,135)				119,136,432

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 0.8%
Repurchase Agreement — 0.7%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (g)	$	849,938	$	849,938
U.S. Treasury Bill — 0.1%
U.S. Treasury Bills
4.852% 4/18/24 (h) (i)		97,000		92,974
TOTAL SHORT-TERM INVESTMENTS (Cost $943,338)				942,912
TOTAL INVESTMENTS — 102.8% (Cost $116,842,473) (j)				120,079,344
Other Assets/(Liabilities) — (2.8)%				(3,232,862)
NET ASSETS — 100.0%			$	116,846,482

Abbreviation Legend

ADR American Depositary Receipt

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) 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, 2023, the aggregate market value of these securities amounted to $4,671,342 or 4.00% of net assets.

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

(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, 2023.

(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) Maturity value of $850,046. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $866,974.

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

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

(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 Note 2 Year	9/29/23		3	$	610,200	$	(169)
Short
U.S. Treasury Note 10 Year	9/20/23		13		(1,487,100)		27,647
U.S. Treasury Ultra 10 Year	9/20/23		11		(1,317,738)		14,925
U.S. Treasury Note 5 Year	9/29/23		7		(764,462)		14,806
						$	57,378

MassMutual Disciplined Value Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.5%
COMMON STOCK — 99.5%
Basic Materials — 3.1%
Chemicals — 1.8%
Albemarle Corp.		2,060	$	459,566
Ecolab, Inc.		774		144,498
LyondellBasell Industries NV Class A		2,230		204,781
Mosaic Co.		2,731		95,585
PPG Industries, Inc.		1,756		260,415
Westlake Corp.		1,162		138,824
				1,303,669
Iron & Steel — 1.3%
Nucor Corp.		2,315		379,614
Reliance Steel & Aluminum Co.		887		240,900
Steel Dynamics, Inc.		3,068		334,197
				954,711
				2,258,380
Communications — 6.8%
Advertising — 1.0%
Omnicom Group, Inc.		8,100		770,715
Internet — 0.8%
F5, Inc. (a)		909		132,950
IAC, Inc. (a)		6,441		404,495
Okta, Inc. (a)		1,021		70,806
				608,251
Media — 2.6%
Comcast Corp. Class A		18,292	��	760,033
Fox Corp. Class A		12,678		431,052
Walt Disney Co. (a)		7,593		677,903
				1,868,988
Telecommunications — 2.4%
Cisco Systems, Inc.		29,049		1,502,995
Frontier Communications Parent, Inc. (a)		12,283		228,955
				1,731,950
				4,979,904

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Consumer, Cyclical — 9.0%
Apparel — 0.1%
Capri Holdings Ltd. (a)		2,440	$	87,571
Auto Manufacturers — 2.2%
Cummins, Inc.		302		74,038
Ford Motor Co.		12,631		191,107
General Motors Co.		9,265		357,259
PACCAR, Inc.		9,354		782,462
Rivian Automotive, Inc. Class A (a)		9,993		166,483
				1,571,349
Auto Parts & Equipment — 0.5%
BorgWarner, Inc.		7,257		354,940
Distribution & Wholesale — 0.8%
Core & Main, Inc. Class A (a)		9,091		284,912
WESCO International, Inc.		1,816		325,173
				610,085
Leisure Time — 0.4%
Brunswick Corp.		1,905		165,049
Polaris, Inc.		946		114,400
				279,449
Retail — 5.0%
Advance Auto Parts, Inc.		1,669		117,331
AutoNation, Inc. (a)		1,687		277,697
GameStop Corp. Class A (a)		2,845		68,991
Genuine Parts Co.		680		115,077
Lithia Motors, Inc.		321		97,619
Macy's, Inc.		5,161		82,834
McDonald's Corp.		4,027		1,201,697
Penske Automotive Group, Inc.		639		106,477
Walmart, Inc.		9,879		1,552,781
				3,620,504
				6,523,898
Consumer, Non-cyclical — 26.5%
Agriculture — 2.1%
Altria Group, Inc.		20,944		948,763
Philip Morris International, Inc.		6,079		593,432
				1,542,195
Beverages — 1.3%
PepsiCo, Inc.		4,962		919,062
Biotechnology — 1.6%
Amgen, Inc.		1,939		430,497
Exelixis, Inc. (a)		3,743		71,529
Royalty Pharma PLC Class A		11,092		340,968

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
United Therapeutics Corp. (a)		1,496	$	330,242
				1,173,236
Commercial Services — 2.0%
Global Payments, Inc.		3,876		381,864
H&R Block, Inc.		2,408		76,743
United Rentals, Inc.		1,854		825,716
WEX, Inc. (a)		1,133		206,285
				1,490,608
Cosmetics & Personal Care — 2.3%
Colgate-Palmolive Co.		2,746		211,552
Procter & Gamble Co.		9,684		1,469,450
				1,681,002
Food — 2.8%
Campbell Soup Co.		4,352		198,930
General Mills, Inc.		6,517		499,854
Kellogg Co.		8,979		605,184
Mondelez International, Inc. Class A		10,034		731,880
				2,035,848
Health Care – Products — 2.9%
Danaher Corp.		5,122		1,229,280
Globus Medical, Inc. Class A (a)		2,817		167,724
Hologic, Inc. (a)		4,492		363,717
The Cooper Cos., Inc.		864		331,284
				2,092,005
Health Care – Services — 2.7%
Centene Corp. (a)		1,781		120,128
Elevance Health, Inc.		1,778		789,948
Ginkgo Bioworks Holdings, Inc. (a)		57,116		106,236
Quest Diagnostics, Inc.		507		71,264
UnitedHealth Group, Inc.		1,805		867,555
				1,955,131
Household Products & Wares — 0.5%
Kimberly-Clark Corp.		2,859		394,713
Pharmaceuticals — 8.3%
Bristol-Myers Squibb Co.		18,314		1,171,180
Cardinal Health, Inc.		914		86,437
Henry Schein, Inc. (a)		5,200		421,720
Jazz Pharmaceuticals PLC (a)		4,126		511,500
Johnson & Johnson		11,610		1,921,687
McKesson Corp.		1,699		726,000
Merck & Co., Inc.		1,380		159,238
Pfizer, Inc.		24,174		886,703
Premier, Inc. Class A		4,930		136,364
				6,020,829
				19,304,629

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Energy — 7.3%
Oil & Gas — 6.4%
Chevron Corp.		8,392	$	1,320,481
ConocoPhillips		10,292		1,066,354
Devon Energy Corp.		2,085		100,789
Exxon Mobil Corp.		12,989		1,393,070
HF Sinclair Corp.		3,517		156,893
Marathon Petroleum Corp.		2,705		315,403
Valero Energy Corp.		2,669		313,074
				4,666,064
Oil & Gas Services — 0.4%
Schlumberger NV		5,426		266,525
Pipelines — 0.5%
ONEOK, Inc.		5,854		361,309
				5,293,898
Financial — 23.9%
Banks — 7.4%
Citigroup, Inc.		4,950		227,898
Cullen/Frost Bankers, Inc.		3,297		354,526
East West Bancorp, Inc.		10,396		548,805
First Citizens BancShares, Inc. Class A		121		155,298
JP Morgan Chase & Co.		15,061		2,190,472
M&T Bank Corp.		2,319		286,999
State Street Corp.		7,723		565,169
The Bank of New York Mellon Corp.		19,252		857,099
Webster Financial Corp.		5,227		197,319
				5,383,585
Diversified Financial Services — 3.9%
Affiliated Managers Group, Inc.		2,694		403,804
Capital One Financial Corp.		1,679		183,632
CME Group, Inc.		2,465		456,740
Coinbase Global, Inc. Class A (a)		1,125		80,494
Interactive Brokers Group, Inc. Class A		3,075		255,440
Intercontinental Exchange, Inc.		751		84,923
Nasdaq, Inc.		10,480		522,428
Raymond James Financial, Inc.		777		80,629
Synchrony Financial		7,319		248,261
Virtu Financial, Inc. Class A		11,254		192,331
Voya Financial, Inc.		1,195		85,693
Western Union Co.		21,356		250,506
				2,844,881
Insurance — 8.0%
Aflac, Inc.		12,318		859,796
Arthur J Gallagher & Co.		4,113		903,092
Berkshire Hathaway, Inc. Class B (a)		8,931		3,045,471
Brown & Brown, Inc.		10,454		719,653
Primerica, Inc.		1,302		257,484
				5,785,496

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Real Estate — 0.2%
CBRE Group, Inc. Class A (a)		2,083	$	168,119
Real Estate Investment Trusts (REITS) — 4.4%
AGNC Investment Corp. (b)		10,354		104,886
Healthcare Realty Trust, Inc.		31,066		585,905
Highwoods Properties, Inc.		7,885		188,530
Kimco Realty Corp.		14,600		287,912
Life Storage, Inc.		775		103,044
National Storage Affiliates Trust		7,464		259,971
Omega Healthcare Investors, Inc.		2,484		76,234
Realty Income Corp.		11,122		664,984
SBA Communications Corp.		3,485		807,684
WP Carey, Inc.		1,616		109,177
				3,188,327
				17,370,408
Industrial — 12.3%
Aerospace & Defense — 2.6%
General Dynamics Corp.		2,601		559,605
Raytheon Technologies Corp.		11,236		1,100,679
TransDigm Group, Inc.		243		217,283
				1,877,567
Building Materials — 0.1%
Trane Technologies PLC		464		88,745
Electrical Components & Equipment — 0.2%
AMETEK, Inc.		1,025		165,927
Electronics — 2.5%
Arrow Electronics, Inc. (a)		4,216		603,858
Honeywell International, Inc.		965		200,237
Hubbell, Inc.		428		141,908
National Instruments Corp.		1,337		76,744
nVent Electric PLC		13,292		686,798
Trimble, Inc. (a)		1,392		73,692
				1,783,237
Engineering & Construction — 0.4%
TopBuild Corp. (a)		1,108		294,750
Hand & Machine Tools — 0.4%
Regal Rexnord Corp.		1,818		279,790
Machinery – Construction & Mining — 0.3%
Caterpillar, Inc.		889		218,738
Machinery – Diversified — 1.8%
Dover Corp.		4,436		654,976
Ingersoll Rand, Inc.		5,855		382,683
The Middleby Corp. (a)		1,933		285,755
				1,323,414

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Metal Fabricate & Hardware — 0.3%
Timken Co.		2,388	$	218,574
Miscellaneous - Manufacturing — 2.4%
3M Co.		8,960		896,807
Carlisle Cos., Inc.		1,929		494,846
Eaton Corp. PLC		1,763		354,539
				1,746,192
Packaging & Containers — 1.3%
Sonoco Products Co.		6,100		360,022
WestRock Co.		20,043		582,650
				942,672
				8,939,606
Technology — 8.2%
Computers — 1.4%
Genpact Ltd.		2,259		84,871
International Business Machines Corp.		2,722		364,231
Leidos Holdings, Inc.		932		82,463
NCR Corp. (a)		8,991		226,573
Science Applications International Corp.		2,329		261,966
				1,020,104
Office & Business Equipment — 0.3%
Zebra Technologies Corp. Class A (a)		607		179,569
Semiconductors — 2.7%
Analog Devices, Inc.		5,621		1,095,027
Microchip Technology, Inc.		8,850		792,872
Texas Instruments, Inc.		406		73,088
				1,960,987
Software — 3.8%
Activision Blizzard, Inc. (a)		4,306		362,996
ANSYS, Inc. (a)		734		242,418
Bill Holdings, Inc. (a)		1,228		143,492
Concentrix Corp.		1,456		117,572
Oracle Corp.		7,346		874,835
Salesforce, Inc. (a)		3,004		634,625
Tyler Technologies, Inc. (a)		230		95,788
Unity Software, Inc. (a)		1,842		79,979
Zoom Video Communications, Inc. Class A (a)		3,477		236,019
				2,787,724
				5,948,384
Utilities — 2.4%
Electric — 1.6%
NRG Energy, Inc.		20,298		758,942
Vistra Corp.		14,644		384,405
				1,143,347

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Gas — 0.8%
National Fuel Gas Co.		12,069	$	619,864
				1,763,211
TOTAL COMMON STOCK (Cost $68,947,217)				72,382,318
TOTAL EQUITIES (Cost $68,947,217)				72,382,318
TOTAL LONG-TERM INVESTMENTS (Cost $68,947,217)				72,382,318
	Principal Amount
SHORT-TERM INVESTMENTS — 0.8%
Repurchase Agreement — 0.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (c)	$	603,736	$	603,736
TOTAL SHORT-TERM INVESTMENTS (Cost $603,736)				603,736
TOTAL INVESTMENTS — 100.3% (Cost $69,550,953) (d)				72,986,054
Other Assets/(Liabilities) — (0.3)%				(227,465)
NET ASSETS — 100.0%			$	72,758,589

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, 2023, was $104,038 or 0.14% of net assets. The Fund received $107,207 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) Maturity value of $603,812. Collateralized by U.S. Government Agency obligations with a rate of 2.375%, maturity date of 5/15/29, and an aggregate market value, including accrued interest, of $615,829.

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

MassMutual Main Street Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.0%
COMMON STOCK — 99.0%
Basic Materials — 1.5%
Chemicals — 1.5%
DuPont de Nemours, Inc.		5,896	$	421,210
Valvoline, Inc.		18,261		684,970
				1,106,180
Communications — 13.3%
Advertising — 1.0%
The Interpublic Group of Cos., Inc.		19,290		744,208
Internet — 11.5%
Airbnb, Inc. Class A (a)		7,343		941,079
Alphabet, Inc. Class A (a)		15,963		1,910,771
Amazon.com, Inc. (a)		10,464		1,364,087
Meta Platforms, Inc. Class A (a)		8,209		2,355,819
Netflix, Inc. (a)		2,975		1,310,458
Uber Technologies, Inc. (a)		15,110		652,298
				8,534,512
Telecommunications — 0.8%
Motorola Solutions, Inc.		406		119,072
T-Mobile US, Inc. (a)		3,433		476,844
				595,916
				9,874,636
Consumer, Cyclical — 2.7%
Auto Parts & Equipment — 0.8%
Mobileye Global, Inc. Class A (a) (b)		16,263		624,825
Retail — 1.9%
O'Reilly Automotive, Inc. (a)		310		296,143
Starbucks Corp.		10,850		1,074,801
				1,370,944
				1,995,769
Consumer, Non-cyclical — 21.4%
Agriculture — 0.7%
British American Tobacco PLC Sponsored ADR		15,311		508,325

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Beverages — 5.1%
Coca-Cola Co.		14,559	$	876,743
Constellation Brands, Inc. Class A		6,033		1,484,902
PepsiCo, Inc.		7,799		1,444,531
				3,806,176
Biotechnology — 1.5%
Gilead Sciences, Inc.		14,485		1,116,359
Commercial Services — 1.4%
Equifax, Inc.		4,263		1,003,084
Cosmetics & Personal Care — 1.4%
Coty, Inc. Class A (a)		25,638		315,091
Kenvue, Inc. (a)		26,391		697,250
				1,012,341
Health Care – Products — 2.4%
Boston Scientific Corp. (a)		9,300		503,037
Zimmer Biomet Holdings, Inc.		8,675		1,263,080
				1,766,117
Health Care – Services — 3.7%
HCA Healthcare, Inc.		3,798		1,152,617
Tenet Healthcare Corp. (a)		10,881		885,496
UnitedHealth Group, Inc.		1,530		735,379
				2,773,492
Pharmaceuticals — 5.2%
AstraZeneca PLC Sponsored ADR		13,951		998,473
Eli Lilly & Co.		3,170		1,486,667
Merck & Co., Inc.		11,924		1,375,910
				3,861,050
				15,846,944
Energy — 4.0%
Oil & Gas — 3.2%
Exxon Mobil Corp.		22,298		2,391,461
Pipelines — 0.8%
Cheniere Energy, Inc.		749		114,117
Magellan Midstream Partners LP (c)		7,668		477,870
				591,987
				2,983,448
Financial — 18.2%
Banks — 3.6%
Columbia Banking System, Inc.		16,221		328,962
JP Morgan Chase & Co.		15,995		2,326,313
				2,655,275

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Diversified Financial Services — 9.1%
American Express Co.		8,217	$	1,431,401
Capital One Financial Corp.		6,607		722,608
Charles Schwab Corp.		24,424		1,384,352
Intercontinental Exchange, Inc.		10,541		1,191,976
Mastercard, Inc. Class A		3,463		1,361,998
Rocket Cos., Inc. Class A (a)		32,929		295,044
Visa, Inc. Class A		1,414		335,797
				6,723,176
Insurance — 2.5%
Arthur J Gallagher & Co.		2,996		657,832
Equitable Holdings, Inc.		44,757		1,215,600
				1,873,432
Real Estate Investment Trusts (REITS) — 3.0%
American Tower Corp.		2,156		418,135
Prologis, Inc.		14,812		1,816,395
				2,234,530
				13,486,413
Industrial — 9.2%
Aerospace & Defense — 2.1%
Boeing Co. (a)		3,697		780,658
Lockheed Martin Corp.		1,615		743,514
				1,524,172
Building Materials — 1.1%
Vulcan Materials Co.		3,689		831,648
Electronics — 1.0%
Hubbell, Inc.		2,309		765,572
Machinery – Diversified — 2.7%
Deere & Co.		1,357		549,843
Otis Worldwide Corp.		16,552		1,473,294
				2,023,137
Transportation — 2.3%
United Parcel Service, Inc. Class B		9,249		1,657,883
				6,802,412
Technology — 26.6%
Computers — 7.2%
Amdocs Ltd.		7,422		733,665
Apple, Inc.		23,855		4,627,154
				5,360,819
Semiconductors — 6.9%
Advanced Micro Devices, Inc. (a)		12,996		1,480,374
Applied Materials, Inc.		7,557		1,092,289

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Monolithic Power Systems, Inc.		667	$	360,333
NVIDIA Corp.		2,090		884,112
QUALCOMM, Inc.		4,538		540,204
Taiwan Semiconductor Manufacturing Co. Ltd. Sponsored ADR		7,178		724,404
				5,081,716
Software — 12.5%
Fiserv, Inc. (a)		7,561		953,820
Manhattan Associates, Inc. (a)		1,818		363,382
Microsoft Corp.		15,551		5,295,738
ServiceNow, Inc. (a)		1,958		1,100,337
Snowflake, Inc. Class A (a)		2,031		357,415
Synopsys, Inc. (a)		1,503		654,421
Tyler Technologies, Inc. (a)		1,362		567,232
				9,292,345
				19,734,880
Utilities — 2.1%
Electric — 2.1%
Dominion Energy, Inc.		16,464		852,670
FirstEnergy Corp.		17,101		664,887
				1,517,557
TOTAL COMMON STOCK (Cost $60,539,716)				73,348,239
TOTAL EQUITIES (Cost $60,539,716)				73,348,239
TOTAL LONG-TERM INVESTMENTS (Cost $60,539,716)				73,348,239
SHORT-TERM INVESTMENTS — 2.0%
Investment of Cash Collateral from Securities Loaned — 0.9%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		631,925		631,925
	Principal Amount
Repurchase Agreement — 1.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (e)	$	808,908		808,908
TOTAL SHORT-TERM INVESTMENTS (Cost $1,440,833)				1,440,833
TOTAL INVESTMENTS — 101.0% (Cost $61,980,549) (f)				74,789,072
Other Assets/(Liabilities) — (1.0)%				(706,560)
NET ASSETS — 100.0%			$	74,082,512

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) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $618,562 or 0.83% of net assets. (Note 2).

(c) Security is a Master Limited Partnership.

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

(e) Maturity value of $809,010. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $825,143.

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

MassMutual Disciplined Growth Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.8%
COMMON STOCK — 98.8%
Communications — 19.1%
Internet — 18.2%
Airbnb, Inc. Class A (a)		5,446	$	697,958
Alphabet, Inc. Class A (a)		57,321		6,861,324
Alphabet, Inc. Class C (a)		41,615		5,034,166
Amazon.com, Inc. (a)		67,983		8,862,264
Booking Holdings, Inc. (a)		327		883,008
Coupang, Inc. (a)		13,453		234,082
Meta Platforms, Inc. Class A (a)		20,557		5,899,448
Netflix, Inc. (a)		2,657		1,170,382
Palo Alto Networks, Inc. (a)		3,145		803,579
Wayfair, Inc. Class A (a)		5,277		343,058
				30,789,269
Telecommunications — 0.9%
Arista Networks, Inc. (a)		9,153		1,483,335
				32,272,604
Consumer, Cyclical — 9.0%
Apparel — 0.6%
Crocs, Inc. (a)		3,094		347,889
Deckers Outdoor Corp. (a)		1,106		583,592
				931,481
Auto Manufacturers — 2.7%
Tesla, Inc. (a)		17,646		4,619,194
Distribution & Wholesale — 0.6%
W.W. Grainger, Inc.		1,368		1,078,791
Leisure Time — 0.2%
Brunswick Corp.		4,430		383,815
Lodging — 0.7%
Marriott International, Inc. Class A		6,317		1,160,370
Retail — 4.2%
AutoZone, Inc. (a)		414		1,032,251
Costco Wholesale Corp.		3,874		2,085,684
Home Depot, Inc.		3,547		1,101,840
Lululemon Athletica, Inc. (a)		4,525		1,712,713

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Ulta Beauty, Inc. (a)		2,316	$	1,089,898
				7,022,386
				15,196,037
Consumer, Non-cyclical — 16.8%
Beverages — 1.0%
Coca-Cola Co.		8,597		517,712
PepsiCo, Inc.		6,333		1,172,998
				1,690,710
Biotechnology — 2.9%
Exelixis, Inc. (a)		23,771		454,264
Incyte Corp. (a)		21,306		1,326,299
Maravai LifeSciences Holdings, Inc. Class A (a)		20,800		258,544
Regeneron Pharmaceuticals, Inc. (a)		1,850		1,329,299
Vertex Pharmaceuticals, Inc. (a)		4,486		1,578,668
				4,947,074
Commercial Services — 3.8%
Automatic Data Processing, Inc.		817		179,569
Booz Allen Hamilton Holding Corp.		9,129		1,018,796
FleetCor Technologies, Inc. (a)		1,641		412,022
Grand Canyon Education, Inc. (a)		4,199		433,379
H&R Block, Inc.		5,116		163,047
Paylocity Holding Corp. (a)		3,474		641,057
PayPal Holdings, Inc. (a)		16,224		1,082,628
Rollins, Inc.		15,236		652,558
United Rentals, Inc.		3,917		1,744,514
				6,327,570
Cosmetics & Personal Care — 0.2%
Procter & Gamble Co.		2,075		314,860
Food — 0.7%
Hershey Co.		4,742		1,184,077
Health Care – Products — 0.8%
Natera, Inc. (a)		3,239		157,610
Thermo Fisher Scientific, Inc.		2,211		1,153,589
				1,311,199
Health Care – Services — 4.1%
Elevance Health, Inc.		1,372		609,566
Medpace Holdings, Inc. (a)		7,334		1,761,406
UnitedHealth Group, Inc.		9,467		4,550,219
				6,921,191
Pharmaceuticals — 3.3%
AbbVie, Inc.		1,237		166,661
AmerisourceBergen Corp.		9,882		1,901,593
Eli Lilly & Co.		2,935		1,376,456
Jazz Pharmaceuticals PLC (a)		11,222		1,391,192
Merck & Co., Inc.		5,062		584,104

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Neurocrine Biosciences, Inc. (a)		2,405	$	226,792
				5,646,798
				28,343,479
Energy — 0.6%
Energy – Alternate Sources — 0.4%
Enphase Energy, Inc. (a)		4,426		741,267
Pipelines — 0.2%
Cheniere Energy, Inc.		1,964		299,235
				1,040,502
Financial — 7.4%
Diversified Financial Services — 4.9%
Apollo Global Management, Inc.		11,300		867,953
LPL Financial Holdings, Inc.		1,765		383,764
Mastercard, Inc. Class A		5,940		2,336,202
Visa, Inc. Class A		19,645		4,665,294
				8,253,213
Insurance — 1.9%
Arthur J Gallagher & Co.		4,351		955,349
Brighthouse Financial, Inc. (a)		19,930		943,685
Brown & Brown, Inc.		16,940		1,166,150
Kinsale Capital Group, Inc.		450		168,390
				3,233,574
Real Estate Investment Trusts (REITS) — 0.6%
Simon Property Group, Inc.		8,666		1,000,750
				12,487,537
Industrial — 3.9%
Aerospace & Defense — 0.6%
Lockheed Martin Corp.		2,122		976,926
Building Materials — 0.3%
Trane Technologies PLC		2,624		501,866
Electronics — 0.4%
Hubbell, Inc.		2,198		728,769
Machinery – Diversified — 2.3%
Deere & Co.		5,612		2,273,926
Graco, Inc.		19,867		1,715,516
				3,989,442
Transportation — 0.3%
JB Hunt Transport Services, Inc.		2,679		484,980
				6,681,983

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Technology — 42.0%
Computers — 15.3%
Accenture PLC Class A		10,292	$	3,175,906
Apple, Inc.		114,356		22,181,633
Fortinet, Inc. (a)		7,895		596,783
				25,954,322
Semiconductors — 8.8%
Broadcom, Inc.		4,054		3,516,561
KLA Corp.		2,300		1,115,546
Microchip Technology, Inc.		11,041		989,163
NVIDIA Corp.		21,838		9,237,911
				14,859,181
Software — 17.9%
Adobe, Inc. (a)		2,600		1,271,374
Alteryx, Inc. Class A (a)		4,578		207,841
Cadence Design Systems, Inc. (a)		3,114		730,295
Confluent, Inc. Class A (a)		4,612		162,850
Dynatrace, Inc. (a)		3,202		164,807
Fiserv, Inc. (a)		3,342		421,593
Gitlab, Inc. Class A (a)		3,297		168,510
HashiCorp, Inc. Class A (a)		12,403		324,710
Intuit, Inc.		3,690		1,690,721
Microsoft Corp.		58,800		20,023,752
Paychex, Inc.		17,283		1,933,449
Salesforce, Inc. (a)		8,860		1,871,764
Smartsheet, Inc. Class A (a)		5,115		195,700
Synopsys, Inc. (a)		1,799		783,303
UiPath, Inc. Class A (a)		17,797		294,896
				30,245,565
				71,059,068
TOTAL COMMON STOCK (Cost $145,831,637)				167,081,210
TOTAL EQUITIES (Cost $145,831,637)				167,081,210
MUTUAL FUNDS — 0.5%
Diversified Financial Services — 0.5%
iShares Russell 1000 Growth ETF		3,071		845,078
TOTAL MUTUAL FUNDS (Cost $840,677)				845,078
TOTAL LONG-TERM INVESTMENTS (Cost $146,672,314)				167,926,288

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 1.5%
Repurchase Agreement — 1.5%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (b)	$	2,495,441	$	2,495,441
TOTAL SHORT-TERM INVESTMENTS (Cost $2,495,441)				2,495,441
TOTAL INVESTMENTS — 100.8% (Cost $149,167,755) (c)				170,421,729
Other Assets/(Liabilities) — (0.8)%				(1,397,586)
NET ASSETS — 100.0%			$	169,024,143

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) Maturity value of $2,495,757. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $2,545,445.

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

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.4%
COMMON STOCK — 99.4%
Basic Materials — 2.4%
Iron & Steel — 0.9%
Commercial Metals Co.		55,033	$	2,898,038
Mining — 1.5%
Century Aluminum Co. (a)		209,878		1,830,136
Kaiser Aluminum Corp.		46,489		3,330,472
				5,160,608
				8,058,646
Communications — 2.4%
Internet — 1.6%
Ziff Davis, Inc. (a)		78,739		5,516,454
Telecommunications — 0.8%
DigitalBridge Group, Inc. (b)		185,816		2,733,354
				8,249,808
Consumer, Cyclical — 13.9%
Apparel — 1.2%
Capri Holdings Ltd. (a)		57,423		2,060,911
Steven Madden Ltd. (b)		65,433		2,139,005
				4,199,916
Auto Parts & Equipment — 3.8%
Allison Transmission Holdings, Inc.		83,478		4,713,168
Dorman Products, Inc. (a)		49,252		3,882,535
Visteon Corp. (a)		29,504		4,237,070
				12,832,773
Home Builders — 1.1%
KB Home		70,797		3,660,913
Home Furnishing — 0.6%
Tempur Sealy International, Inc.		54,577		2,186,900
Leisure Time — 0.6%
Topgolf Callaway Brands Corp. (a)		99,998		1,984,960
Lodging — 1.1%
Boyd Gaming Corp.		54,784		3,800,366

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

	Number of Shares		Value
Retail — 5.5%
AutoNation, Inc. (a)		49,407	$	8,132,886
BJ's Wholesale Club Holdings, Inc. (a)		53,534		3,373,178
Murphy USA, Inc.		5,629		1,751,238
Papa John's International, Inc.		27,051		1,997,175
Texas Roadhouse, Inc.		31,771		3,567,248
				18,821,725
				47,487,553
Consumer, Non-cyclical — 22.6%
Beverages — 0.9%
Coca-Cola Consolidated, Inc.		4,947		3,146,391
Biotechnology — 3.9%
ADMA Biologics, Inc. (a)		562,603		2,076,005
Avid Bioservices, Inc. (a)		66,709		931,924
Bridgebio Pharma, Inc. (a)		71,629		1,232,019
Guardant Health, Inc. (a)		83,239		2,979,956
Intra-Cellular Therapies, Inc. (a)		54,140		3,428,145
IVERIC bio, Inc. (a)		64,411		2,533,929
				13,181,978
Commercial Services — 3.9%
ABM Industries, Inc.		51,609		2,201,124
ASGN, Inc. (a)		53,719		4,062,768
Korn Ferry		75,291		3,729,916
Marqeta, Inc. Class A (a)		682,248		3,322,548
				13,316,356
Health Care – Products — 4.6%
AtriCure, Inc. (a)		79,095		3,904,129
BioLife Solutions, Inc. (a)		95,407		2,108,495
Inspire Medical Systems, Inc. (a)		19,606		6,364,892
TransMedics Group, Inc. (a)		37,273		3,130,186
				15,507,702
Health Care – Services — 5.6%
Acadia Healthcare Co., Inc. (a)		87,137		6,939,591
Addus HomeCare Corp. (a)		36,738		3,405,612
Encompass Health Corp.		49,594		3,358,010
Tenet Healthcare Corp. (a)		67,248		5,472,642
				19,175,855
Pharmaceuticals — 3.7%
Ascendis Pharma AS ADR (a)		22,457		2,004,287
BellRing Brands, Inc. (a)		136,715		5,003,769
Collegium Pharmaceutical, Inc. (a)		104,942		2,255,204
Reata Pharmaceuticals, Inc. Class A (a)		32,511		3,314,822
				12,578,082
				76,906,364

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

	Number of Shares		Value
Energy — 5.2%
Oil & Gas — 3.1%
Chesapeake Energy Corp. (b)		42,053	$	3,518,995
CNX Resources Corp. (a)		225,060		3,988,063
Helmerich & Payne, Inc.		82,038		2,908,247
				10,415,305
Oil & Gas Services — 0.8%
Nov, Inc.		173,604		2,784,608
Pipelines — 1.3%
Equitrans Midstream Corp.		473,526		4,526,909
				17,726,822
Financial — 14.5%
Banks — 3.7%
Bank of NT Butterfield & Son Ltd.		58,120		1,590,163
Cathay General Bancorp		86,099		2,771,527
Columbia Banking System, Inc.		151,666		3,075,786
Webster Financial Corp.		68,433		2,583,346
Wintrust Financial Corp.		35,696		2,592,244
				12,613,066
Diversified Financial Services — 3.3%
Federated Hermes, Inc.		120,732		4,328,242
PennyMac Financial Services, Inc.		31,918		2,244,154
Stifel Financial Corp.		81,734		4,877,068
				11,449,464
Insurance — 1.3%
Definity Financial Corp. (b)		161,921		4,296,300
Real Estate Investment Trusts (REITS) — 3.7%
DiamondRock Hospitality Co.		524,358		4,200,107
Four Corners Property Trust, Inc.		176,044		4,471,518
Outfront Media, Inc.		253,897		3,991,261
				12,662,886
Savings & Loans — 2.5%
Berkshire Hills Bancorp, Inc.		103,622		2,148,084
OceanFirst Financial Corp.		122,957		1,920,588
Pacific Premier Bancorp, Inc.		128,020		2,647,454
WSFS Financial Corp.		47,883		1,806,147
				8,522,273
				49,543,989
Industrial — 22.6%
Aerospace & Defense — 1.6%
Curtiss-Wright Corp.		30,038		5,516,779

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

	Number of Shares		Value
Building Materials — 2.0%
Summit Materials, Inc. Class A (a)		183,151	$	6,932,265
Electrical Components & Equipment — 1.1%
Belden, Inc.		40,683		3,891,329
Electronics — 4.5%
Atkore, Inc. (a)		45,841		7,148,446
Itron, Inc. (a)		51,687		3,726,633
Vishay Intertechnology, Inc.		148,076		4,353,434
				15,228,513
Engineering & Construction — 2.2%
TopBuild Corp. (a)		27,876		7,415,574
Environmental Controls — 1.3%
Casella Waste Systems, Inc. Class A (a)		48,014		4,342,866
Hand & Machine Tools — 0.8%
Regal Rexnord Corp.		17,169		2,642,309
Machinery – Construction & Mining — 1.0%
BWX Technologies, Inc.		47,839		3,423,837
Machinery – Diversified — 2.1%
Esab Corp.		42,257		2,811,781
Zurn Elkay Water Solutions Corp. Class C		168,337		4,526,582
				7,338,363
Metal Fabricate & Hardware — 1.3%
Valmont Industries, Inc.		14,909		4,339,264
Miscellaneous - Manufacturing — 1.9%
EnPro Industries, Inc.		48,464		6,471,398
Packaging & Containers — 1.1%
Silgan Holdings, Inc.		79,984		3,750,450
Transportation — 1.7%
CryoPort, Inc. (a)		86,598		1,493,816
Hub Group, Inc. Class A (a)		53,723		4,315,031
				5,808,847
				77,101,794
Technology — 14.7%
Computers — 3.2%
3D Systems Corp. (a)		95,547		948,782
CACI International, Inc. Class A (a)		13,814		4,708,364
Endava PLC Sponsored ADR (a)		38,458		1,991,740
KBR, Inc.		52,609		3,422,741
				11,071,627
Semiconductors — 4.1%
Allegro MicroSystems, Inc. (a)		88,534		3,996,425
Ambarella, Inc. (a)		38,184		3,194,855

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

	Number of Shares		Value
MACOM Technology Solutions Holdings, Inc. (a)		49,326	$	3,232,333
MKS Instruments, Inc. (b)		31,852		3,443,201
				13,866,814
Software — 7.4%
Consensus Cloud Solutions, Inc. (a)		39,231		1,216,161
Envestnet, Inc. (a)		53,128		3,153,147
Evolent Health, Inc. Class A (a)		99,345		3,010,153
Gitlab, Inc. Class A (a)		79,064		4,040,961
HashiCorp, Inc. Class A (a)		116,696		3,055,101
Paycor HCM, Inc. (a) (b)		187,694		4,442,717
Progress Software Corp.		54,250		3,151,925
Sprout Social, Inc. Class A (a)		69,522		3,209,136
				25,279,301
				50,217,742
Utilities — 1.1%
Electric — 1.1%
Portland General Electric Co.		77,538		3,631,104
TOTAL COMMON STOCK (Cost $291,906,837)				338,923,822
TOTAL EQUITIES (Cost $291,906,837)				338,923,822
TOTAL LONG-TERM INVESTMENTS (Cost $291,906,837)				338,923,822
	Principal Amount
SHORT-TERM INVESTMENTS — 0.9%
Repurchase Agreement — 0.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (c)	$	2,900,322		2,900,322
TOTAL SHORT-TERM INVESTMENTS (Cost $2,900,322)				2,900,322
TOTAL INVESTMENTS — 100.3% (Cost $294,807,159) (d)				341,824,144
Other Assets/(Liabilities) — (0.3)%				(902,694)
NET ASSETS — 100.0%			$	340,921,450

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) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $11,009,569 or 3.23% of net assets. The Fund received $11,296,782 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) Maturity value of $2,900,689. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $2,958,412.

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

MassMutual Global Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.8%
COMMON STOCK — 99.8%
Canada — 0.6%
Canadian Pacific Kansas City Ltd. (a)		16,853	$	1,361,217
China — 3.8%
JD.com, Inc. ADR (a)		161,431		5,509,640
Meituan Class B (b) (c)		82,270		1,293,126
Tencent Holdings Ltd.		29,200		1,242,826
Yum China Holdings, Inc.		3,322		187,693
				8,233,285
Denmark — 3.5%
Novo Nordisk A/S Class B		46,545		7,517,658
France — 13.5%
Airbus SE		69,000		9,974,319
Dassault Systemes SE		22,285		988,253
EssilorLuxottica SA		6,517		1,233,328
Kering SA		8,357		4,628,422
LVMH Moet Hennessy Louis Vuitton SE		12,873		12,148,583
Pernod Ricard SA		1,570		346,875
				29,319,780
Germany — 2.5%
Allianz SE Registered		2,810		653,631
SAP SE		35,852		4,895,373
				5,549,004
India — 5.8%
DLF Ltd.		1,445,853		8,661,260
HDFC Bank Ltd.		43,653		906,623
ICICI Bank Ltd. Sponsored ADR		134,359		3,101,006
				12,668,889
Israel — 0.9%
Nice Ltd. Sponsored ADR (a) (b)		9,680		1,998,920
Italy — 0.8%
Brunello Cucinelli SpA		19,322		1,703,587
Japan — 6.3%
Hoya Corp.		8,700		1,037,818
Keyence Corp.		15,000		7,093,773
Murata Manufacturing Co. Ltd.		43,430		2,492,007
Omron Corp.		8,900		545,205

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
TDK Corp.		66,800	$	2,586,578
				13,755,381
Netherlands — 1.4%
ASML Holding NV		4,061		2,939,640
Universal Music Group NV		8,627		191,671
				3,131,311
Spain — 1.5%
Amadeus IT Group SA (b)		43,190		3,292,860
Sweden — 4.3%
Assa Abloy AB Class B		155,803		3,739,939
Atlas Copco AB Class A		392,357		5,658,683
				9,398,622
Switzerland — 0.9%
Lonza Group AG Registered		3,247		1,939,077
United States — 54.0%
Adobe, Inc. (b)		16,182		7,912,836
Agilent Technologies, Inc.		16,810		2,021,402
Alphabet, Inc. Class A (b)		192,634		23,058,290
Amazon.com, Inc. (b)		18,177		2,369,554
Analog Devices, Inc.		55,951		10,899,814
Avantor, Inc. (b)		46,733		959,896
Boston Scientific Corp. (b)		13,758		744,170
Charles River Laboratories International, Inc. (b)		3,364		707,281
Charter Communications, Inc. Class A (b)		2,624		963,979
Danaher Corp.		4,375		1,050,000
Datadog, Inc. Class A (b)		5,325		523,874
Ecolab, Inc.		4,207		785,405
Equifax, Inc.		19,352		4,553,526
Fidelity National Information Services, Inc.		10,452		571,724
IDEXX Laboratories, Inc. (b)		1,785		896,481
Illumina, Inc. (b)		7,381		1,383,864
Intuit, Inc.		17,586		8,057,729
Intuitive Surgical, Inc. (b)		6,512		2,226,713
IQVIA Holdings, Inc. (b)		9,969		2,240,732
Lam Research Corp.		694		446,145
Marriott International, Inc. Class A		8,435		1,549,425
Marvell Technology, Inc.		59,867		3,578,849
Meta Platforms, Inc. Class A (b)		50,030		14,357,609
Microsoft Corp.		12,117		4,126,323
NVIDIA Corp.		6,319		2,673,063
Phathom Pharmaceuticals, Inc. (a) (b)		42,944		614,958
S&P Global, Inc.		25,102		10,063,141
Splunk, Inc. (b)		9,321		988,865
United Parcel Service, Inc. Class B		15,635		2,802,574

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Visa, Inc. Class A		19,666	$	4,670,282
				117,798,504
TOTAL COMMON STOCK (Cost $129,660,060)				217,668,095
TOTAL EQUITIES (Cost $129,660,060)				217,668,095
TOTAL LONG-TERM INVESTMENTS (Cost $129,660,060)				217,668,095
SHORT-TERM INVESTMENTS — 2.6%
Investment of Cash Collateral from Securities Loaned — 2.6%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		5,619,491		5,619,491
TOTAL SHORT-TERM INVESTMENTS (Cost $5,619,491)				5,619,491
TOTAL INVESTMENTS — 102.4% (Cost $135,279,551) (e)				223,287,586
Other Assets/(Liabilities) — (2.4)%				(5,217,308)
NET ASSETS — 100.0%			$	218,070,278

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, 2023, was $7,591,360 or 3.48% of net assets. The Fund received $2,167,718 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, 2023, the aggregate market value of these securities amounted to $1,293,126 or 0.59% of net assets.

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

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

MassMutual International Equity Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 95.8%
COMMON STOCK — 95.7%
Australia — 1.1%
BHP Group Ltd. Sponsored ADR (a)		2,000	$	119,340
BHP Group Ltd. (a)		3,900		116,364
Glencore PLC		40,900		232,007
Macquarie Group Ltd.		3,000		357,496
Santos Ltd.		71,700		361,130
Sonic Healthcare Ltd.		3,000		71,357
Westpac Banking Corp.		11,930		170,184
Woodside Energy Group Ltd.		4,626		107,131
				1,535,009
Belgium — 0.8%
Anheuser-Busch InBev SA		10,394		588,677
Groupe Bruxelles Lambert NV		2,000		157,624
KBC Group NV		4,900		342,650
				1,088,951
Canada — 6.0%
Canadian National Railway Co.		27,474		3,326,952
Intact Financial Corp.		21,664		3,344,899
TFI International, Inc.		1,432		163,149
The Bank of Nova Scotia (a)		28,504		1,426,114
				8,261,114
China — 0.2%
NXP Semiconductor NV		1,300		266,084
Finland — 2.0%
Kone OYJ Class B		45,189		2,360,498
Nokia OYJ		89,900		377,267
				2,737,765
France — 9.8%
Accor SA		4,100		152,461
Amundi SA (b)		3,692		218,203
AXA SA		71,853		2,122,792
Capgemini SE		17,980		3,406,154
Cie de Saint-Gobain		3,700		225,394
Engie SA		11,005		183,048
LVMH Moet Hennessy Louis Vuitton SE		1,272		1,200,419
Rexel SA		5,800		143,411
Societe Generale SA		8,800		229,080
Sodexo SA		2,834		312,094
TotalEnergies SE		36,290		2,079,870
Veolia Environnement SA		18,092		572,006

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Vinci SA		21,912	$	2,546,773
				13,391,705
Germany — 5.2%
Allianz SE Registered		1,960		455,914
BASF SE		5,700		276,750
Bayer AG Registered		2,100		116,101
Deutsche Boerse AG		1,736		320,612
Deutsche Post AG Registered		10,400		507,857
Heidelberg Materials AG		5,800		476,266
Infineon Technologies AG		10,500		433,025
K&S AG Registered		4,500		78,338
Merck KGaA		18,273		3,021,119
SAP SE		4,900		669,065
Siemens AG Registered		3,160		525,977
Siemens Energy AG (c)		7,934		140,051
Talanx AG (c)		2,300		131,857
				7,152,932
Hong Kong — 3.8%
AIA Group Ltd.		326,422		3,330,544
CK Asset Holdings Ltd.		57,000		316,335
Prudential PLC		113,218		1,596,639
				5,243,518
Ireland — 0.9%
AerCap Holdings NV (c)		8,481		538,713
AIB Group PLC		82,500		347,093
Ryanair Holdings PLC Sponsored ADR (c)		300		33,180
Smurfit Kappa Group PLC		11,300		377,185
				1,296,171
Israel — 0.2%
Check Point Software Technologies Ltd. (c)		2,390		300,232
Italy — 0.1%
Prysmian SpA		3,300		138,217
Japan — 14.9%
Astellas Pharma, Inc.		173,220		2,581,233
Chugai Pharmaceutical Co. Ltd. (a)		114,901		3,267,791
Denka Co. Ltd.		7,800		147,450
FANUC Corp.		9,300		326,991
Fujitsu Ltd.		3,000		386,781
Hitachi Ltd.		7,600		470,376
Kao Corp. (a)		58,846		2,131,378
KDDI Corp.		103,674		3,204,132
Kirin Holdings Co. Ltd. (a)		110,615		1,615,458
Kyocera Corp.		6,600		358,751
Nintendo Co. Ltd.		8,700		395,744
Olympus Corp.		14,400		227,936
ORIX Corp.		23,500		429,781
Rakuten Group, Inc.		54,200		188,779
SBI Holdings, Inc.		17,700		341,694
Seven & i Holdings Co. Ltd.		11,900		514,531
Shiseido Co. Ltd.		43,312		1,962,300

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Sony Group Corp.		7,700	$	690,672
Square Enix Holdings Co. Ltd.		3,000		139,687
Sumitomo Mitsui Financial Group, Inc.		10,300		440,852
Toyota Industries Corp.		7,100		509,352
				20,331,669
Luxembourg — 0.2%
ArcelorMittal SA		10,100		275,170
Netherlands — 4.9%
ASML Holding NV		590		427,084
EXOR NV		1,300		116,159
Heineken Holding NV		4,300		373,886
Heineken NV		31,084		3,198,910
ING Groep NV		13,700		185,012
Koninklijke Philips NV		5,745		124,324
Shell PLC		77,976		2,321,559
				6,746,934
Norway — 0.5%
Aker BP ASA		12,013		281,503
DNB Bank ASA		18,800		351,480
				632,983
Republic of Korea — 0.4%
Samsung Electronics Co. Ltd.		9,100		501,560
Singapore — 0.3%
DBS Group Holdings Ltd.		16,200		378,794
Spain — 3.9%
Iberdrola SA		191,530		2,501,742
Industria de Diseno Textil SA		74,043		2,876,738
				5,378,480
Sweden — 2.9%
Assa Abloy AB Class B		128,261		3,078,813
Essity AB Class B		13,200		351,345
Husqvarna AB Class B (a)		9,700		87,986
Skandinaviska Enskilda Banken AB Class A		20,859		230,783
Volvo AB Class B		8,800		182,529
				3,931,456
Switzerland — 3.6%
ABB Ltd. Registered		9,500		373,809
Alcon, Inc.		1,000		83,085
Cie Financiere Richemont SA Registered Class A		2,400		407,217
Julius Baer Group Ltd.		3,000		189,159
Novartis AG Registered		38,032		3,838,471
				4,891,741
United Kingdom — 20.0%
Ashtead Group PLC		6,000		416,640
AstraZeneca PLC		21,990		3,149,808
Aviva PLC		17,558		88,493

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
BAE Systems PLC		275,027	$	3,245,022
Barratt Developments PLC		21,100		110,769
BP PLC		83,600		489,799
Bunzl PLC		5,900		224,632
Burberry Group PLC		7,300		196,469
CK Hutchison Holdings Ltd.		83,000		508,037
CNH Industrial NV		19,900		287,628
Compass Group PLC		57,656		1,612,825
DCC PLC		6,541		365,610
Diageo PLC		58,136		2,493,798
Dowlais Group PLC (c)		31,173		50,256
Entain PLC		16,200		263,092
Inchcape PLC		21,556		213,037
Informa PLC		33,000		304,195
Kingfisher PLC		93,700		275,663
Legal & General Group PLC		96,600		280,027
Liberty Global PLC Class C (c)		13,900		247,003
Lloyds Banking Group PLC		755,300		418,717
Melrose Industries PLC		1,130		7,274
National Grid PLC		71,422		943,779
Persimmon PLC		10,200		132,976
Reckitt Benckiser Group PLC		49,524		3,719,267
Smith & Nephew PLC		219,849		3,547,446
Tesco PLC		133,000		420,284
Unilever PLC		10,300		537,068
Unilever PLC		54,884		2,857,219
				27,406,833
United States — 14.0%
Experian PLC		82,305		3,162,615
GSK PLC		18,320		323,617
Linde PLC		9,732		3,709,184
Linde PLC		870		331,540
Nestle SA Registered		33,899		4,078,887
Roche Holding AG		11,842		3,618,862
Sanofi		5,000		536,015
Schneider Electric SE		17,261		3,146,113
Stellantis NV		10,100		177,787
				19,084,620
TOTAL COMMON STOCK (Cost $124,628,206)				130,971,938
PREFERRED STOCK — 0.1%
Germany — 0.1%
Henkel AG & Co. KGaA 2.525%		2,200		175,861
TOTAL PREFERRED STOCK (Cost $172,879)				175,861
TOTAL EQUITIES (Cost $124,801,085)				131,147,799
TOTAL LONG-TERM INVESTMENTS (Cost $124,801,085)				131,147,799
	Principal Amount
SHORT-TERM INVESTMENTS — 3.4%
Repurchase Agreement — 3.4%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (d)	$	4,554,978		4,554,978
TOTAL SHORT-TERM INVESTMENTS (Cost $4,554,978)				4,554,978
TOTAL INVESTMENTS — 99.2% (Cost $129,356,063) (e)				135,702,777
Other Assets/(Liabilities) — 0.8%				1,118,804
NET ASSETS — 100.0%			$	136,821,581

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, 2023, was $6,446,379 or 4.71% of net assets. The Fund received $6,776,274 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) 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, 2023, the aggregate market value of these securities amounted to $218,203 or 0.16% of net assets.

(c) Non-income producing security.

(d) Maturity value of $4,555,555. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $4,646,079.

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

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments

June 30, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 95.9%
COMMON STOCK — 95.3%
Australia — 0.6%
Glencore PLC		124,392	$	705,618
Brazil — 5.8%
Ambev SA		825,963		2,658,220
Arezzo Industria e Comercio SA		5,000		82,568
B3 SA - Brasil Bolsa Balcao		319,600		975,180
NU Holdings Ltd/Cayman Islands Class A (a)		225,652		1,780,394
Vale SA Sponsored ADR		62,619		840,347
WEG SA		67,237		530,094
				6,866,803
Chile — 0.8%
Antofagasta PLC		7,551		140,720
Banco Santander Chile		16,532,668		782,345
				923,065
China — 25.8%
BeiGene Ltd. ADR (a) (b)		5,646		1,006,682
H World Group Ltd. (a)		9,900		38,302
H World Group Ltd. ADR (a)		119,388		4,629,867
Meituan Class B (a) (c)		77,629		1,220,179
MicroTech Medical Hangzhou Co. Ltd. Class H (a) (c)		33,400		22,800
NetEase, Inc. ADR		44,680		4,320,109
New Horizon Health Ltd. (a) (c)		76,500		268,276
PDD Holdings, Inc. (a)		16,087		1,112,255
Silergy Corp.		14,000		175,048
Tencent Holdings Ltd.		103,790		4,417,565
Wuxi Biologics Cayman, Inc. (a) (c)		187,500		903,462
Yum China Holdings, Inc.		120,151		6,788,531
Zai Lab Ltd. ADR (a)		15,460		428,706
ZTO Express Cayman, Inc.		12,420		311,341
ZTO Express Cayman, Inc. ADR		184,291		4,622,018
				30,265,141
France — 6.1%
L'Oreal SA		574		267,873
Pernod Ricard SA		25,498		5,633,511
TotalEnergies SE		21,523		1,233,537
				7,134,921
Hong Kong — 1.5%
AIA Group Ltd.		129,000		1,316,211
Hong Kong Exchanges & Clearing Ltd.		7,700		292,823

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

	Number of Shares		Value
Hongkong Land Holdings Ltd.		31,100	$	121,504
				1,730,538
India — 18.3%
Havells India Ltd.		31,152	$	487,138
Housing Development Finance Corp. Ltd.		226,411		7,796,204
Kotak Mahindra Bank Ltd.		280,731		6,309,808
Oberoi Realty Ltd.		83,222		999,718
Tata Consultancy Services Ltd.		146,846		5,918,162
				21,511,030
Indonesia — 0.8%
Bank Central Asia Tbk PT		1,543,300		951,405
Italy — 1.9%
Ermenegildo Zegna NV		29,165		369,812
PRADA SpA		271,700		1,820,669
				2,190,481
Japan — 0.5%
Daiichi Sankyo Co. Ltd.		18,300		580,319
Mexico — 11.1%
America Movil SAB de CV ADR (a)		100,389		2,172,418
Fomento Economico Mexicano SAB de CV		193,993		2,146,650
Grupo Mexico SAB de CV Series B		1,253,534		6,027,099
Wal-Mart de Mexico SAB de CV		674,768		2,676,287
				13,022,454
Netherlands — 0.1%
Argenx SE ADR (a)		174		67,813
Peru — 1.0%
Credicorp Ltd.		8,344		1,231,908
Philippines — 1.1%
SM Investments Corp.		78,470		1,317,003
Portugal — 0.6%
Galp Energia SGPS SA		65,081		760,953
Republic of Korea — 7.1%
LG Chem Ltd.		6,449		3,298,328
LG H&H Co. Ltd.		857		300,178
Samsung Biologics Co. Ltd. (a) (c)		3,487		1,968,923
Samsung Electronics Co. Ltd.		50,079		2,760,176
				8,327,605
Russia — 0.0%
Novatek PJSC (a) (d) (e)		19,765		—
Sberbank of Russia PJSC (d) (e)		18,062		—
				—
South Africa — 0.6%
FirstRand Ltd.		194,790		710,830

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

	Number of Shares		Value
Switzerland — 3.4%
Cie Financiere Richemont SA Registered Class A		23,753	$	4,030,258
Taiwan — 8.1%
MediaTek, Inc.		5,000	$	110,986
Taiwan Semiconductor Manufacturing Co. Ltd.		503,000		9,373,570
				9,484,556
United Kingdom — 0.1%
AstraZeneca PLC Sponsored ADR		2,483		177,708
TOTAL COMMON STOCK (Cost $104,883,445)				111,990,409
PREFERRED STOCK — 0.6%
Brazil — 0.6%
Banco Bradesco SA 4.052%		216,349		743,273
TOTAL PREFERRED STOCK (Cost $733,954)				743,273
TOTAL EQUITIES (Cost $105,617,399)				112,733,682
WARRANTS — 0.1%
Switzerland — 0.1%
Cie Financiere Richemont SA, Expires 11/22/23, Strike 67.00 (a)		53,937		74,423
TOTAL WARRANTS (Cost $0)				74,423
TOTAL LONG-TERM INVESTMENTS (Cost $105,617,399)				112,808,105
	Principal Amount
SHORT-TERM INVESTMENTS — 4.2%
Repurchase Agreement — 4.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/30/23, 1.520%, due 7/03/23 (f)	$	4,873,791		4,873,791
TOTAL SHORT-TERM INVESTMENTS (Cost $4,873,791)				4,873,791
TOTAL INVESTMENTS — 100.2% (Cost $110,491,190) (g)				117,681,896
Other Assets/(Liabilities) — (0.2)%				(178,722)
NET ASSETS — 100.0%			$	117,503,174

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) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2023, was $741,327 or 0.63% of net assets. The Fund received $763,913 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, 2023, the aggregate market value of these securities amounted to $4,383,640 or 3.73% 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, 2023, these securities amounted to a value of $0 or 0.00% of net assets.

(e) Investment is valued using significant unobservable inputs.

(f) Maturity value of $4,874,409. Collateralized by U.S. Government Agency obligations with a rate of 4.250%, maturity date of 10/15/25, and an aggregate market value, including accrued interest, of $4,971,331.

(g) 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”)

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; instead, MML Investment Advisers, LLC (“MML Advisers”) will determine the fair value of a Fund’s securities in accordance with MML Advisers’ fair valuation policy and procedures. 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.

Notes to Portfolio of Investments (Unaudited) (Continued)

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.

The Board of Trustees (“Trustees”) have designated MML Advisers as the Funds’ “valuation designee,” responsible for determining the fair value, in good faith, of securities and other instruments held by the Funds for which market quotations are not readily available or for which such market quotations or values are considered by MML Advisers or a 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). It is possible that a significant amount of a Fund’s assets will be subject to fair valuation in accordance with MML Advisers’ fair valuation policy and procedures. The fair value determined for an investment by MML Advisers may differ from recent market prices for the investment and may be significantly different from the value realized upon the sale of such investment.

Notes to Portfolio of Investments (Unaudited) (Continued)

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.

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 may be fair valued using 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 the 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.

Notes to Portfolio of Investments (Unaudited) (Continued)

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.

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, Main Street 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, except for the State Street Navigator Securities Lending Government Money Market Portfolio which was characterized at Level 1, as of June 30, 2023. 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.

The following is the aggregate value by input level, as of June 30, 2023, for the remaining Funds' investments:

Short-Duration Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Corporate Debt	$	—		$	116,194,740		$	—	$	116,194,740
Non-U.S. Government Agency Obligations		—			110,147,930			—		110,147,930
U.S. Government Agency Obligations and Instrumentalities		—			81,356			—		81,356
Short-Term Investments		1,389,480			4,990,360			—		6,379,840
Total Investments	$	1,389,480		$	231,414,386		$	—	$	232,803,866
Asset Derivatives
Futures Contracts	$	1,153,669		$	—		$	—	$	1,153,669
Swap Agreements		—			252,891			—		252,891
Total	$	1,153,669		$	252,891		$	—	$	1,406,560
Liability Derivatives
Futures Contracts	$	(1,503,892	)	$	—		$	—	$	(1,503,892	)
Swap Agreements		—			(1,001,983	)		—		(1,001,983	)
Total	$	(1,503,892	)	$	(1,001,983	)	$	—	$	(2,505,875	)

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	$	—		$	146,426,902		$	—	$	146,426,902
U.S. Government Agency Obligations and Instrumentalities		—			34,793,127			—		34,793,127
U.S. Treasury Obligations		—			51,747,732			—		51,747,732
Short-Term Investments		—			42,579,190			—		42,579,190
Total Investments	$	—		$	275,546,951		$	—	$	275,546,951
Asset Derivatives
Futures Contracts	$	1,090,652		$	—		$	—	$	1,090,652
Swap Agreements		—			2,059,857			—		2,059,857
Total	$	1,090,652		$	2,059,857		$	—	$	3,150,509
Liability Derivatives
Futures Contracts	$	(513	)	$	—		$	—	$	(513	)
Swap Agreements		—			(2,890,796	)		—		(2,890,796	)
Total	$	(513	)	$	(2,890,796	)	$	—	$	(2,891,309	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Core Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Corporate Debt	$	—		$	280,364,914		$	—	$	280,364,914
Non-U.S. Government Agency Obligations		—			211,034,859			—		211,034,859
Sovereign Debt Obligations		—			1,518,510			—		1,518,510
U.S. Government Agency Obligations and Instrumentalities		—			224,005,241			—		224,005,241
U.S. Treasury Obligations		—			11,764,305			—		11,764,305
Short-Term Investments		5,599,395			88,804,730			—		94,404,125
Total Investments	$	5,599,395		$	817,492,559		$	—	$	823,091,954
Asset Derivatives
Futures Contracts	$	594,175		$	—		$	—	$	594,175
Swap Agreements		—			1,386,265			—		1,386,265
Total	$	594,175		$	1,386,265		$	—	$	1,980,440
Liability Derivatives
Futures Contracts	$	(1,338,477	)	$	—		$	—	$	(1,338,477	)
Swap Agreements		—			(5,435,224	)		—		(5,435,224	)
Total	$	(1,338,477	)	$	(5,435,224	)	$	—	$	(6,773,701	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Diversified Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Preferred Stock	$	1,043,237		$	—		$	—	$	1,043,237
Corporate Debt		—			70,415,104			—		70,415,104
Non-U.S. Government Agency Obligations		—			43,705,271			—		43,705,271
Sovereign Debt Obligations		—			182,768			—		182,768
U.S. Government Agency Obligations and Instrumentalities		—			26,561,163			—		26,561,163
U.S. Treasury Obligations		—			9,864,071			—		9,864,071
Purchased Options		—			10,454			—		10,454
Warrants		—			—			4,002		4,002
Short-Term Investments		4,264,865			15,247,215			—		19,512,080
Total Investments	$	5,308,102		$	165,986,046		$	4,002	$	171,298,150
Asset Derivatives
Forward Contracts	$	—		$	96,196		$	—	$	96,196
Futures Contracts		106,756			—			—		106,756
Swap Agreements		—			277,420			—		277,420
Total	$	106,756		$	373,616		$	—	$	480,372
Liability Derivatives
Forward Contracts	$	—		$	(126,728	)	$	—	$	(126,728	)
Futures Contracts		(352,851	)		—			—		(352,851	)
Swap Agreements		—			(1,064,312	)		—		(1,064,312	)
Written Options		—			(14,833	)		—		(14,833	)
Total	$	(352,851	)	$	(1,205,873	)	$	—	$	(1,558,724	)

Notes to Portfolio of Investments (Unaudited) (Continued)

High Yield Fund

Asset Investments	Level 1		Level 2			Level 3		Total
Bank Loans	$	—	$	7,617,887		$	—	$	7,617,887
Corporate Debt		—		359,471,392			—		359,471,392
Short-Term Investments		20,460,977		24,415,489			—		44,876,466
Total Investments	$	20,460,977	$	391,504,768		$	—	$	411,965,745
Liability Investments
Unfunded Bank Loan Commitments **	$	—	$	(308	)	$	—	$	(308	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Balanced Fund

Asset Investments	Level 1			Level 2		Level 3		Total
Common Stock	$	76,117,444		$	—	$	—	$	76,117,444
Corporate Debt		—			12,771,916		—		12,771,916
Non-U.S. Government Agency Obligations		—			4,352,861		—		4,352,861
U.S. Government Agency Obligations and Instrumentalities		—			10,365,718		—		10,365,718
U.S. Treasury Obligations		—			15,528,493		—		15,528,493
Short-Term Investments		—			942,912		—		942,912
Total Investments	$	76,117,444		$	43,961,900	$	—	$	120,079,344
Asset Derivatives
Futures Contracts	$	57,378		$	—	$	—	$	57,378
Liability Derivatives
Futures Contracts	$	(169	)	$	—	$	—	$	(169	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Global Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Canada	$	1,361,217	$	—	$	—	$	1,361,217
China		5,697,333		2,535,952		—		8,233,285
Denmark		—		7,517,658		—		7,517,658
France		—		29,319,780		—		29,319,780
Germany		—		5,549,004		—		5,549,004
India		3,101,006		9,567,883		—		12,668,889
Israel		1,998,920		—		—		1,998,920
Italy		—		1,703,587		—		1,703,587
Japan		—		13,755,381		—		13,755,381
Netherlands		—		3,131,311		—		3,131,311
Spain		—		3,292,860		—		3,292,860
Sweden		—		9,398,622		—		9,398,622
Switzerland		—		1,939,077		—		1,939,077
United States		117,798,504		—		—		117,798,504
Short-Term Investments		5,619,491		—		—		5,619,491
Total Investments	$	135,576,471	$	87,711,115	$	—	$	223,287,586

Notes to Portfolio of Investments (Unaudited) (Continued)

International Equity Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Australia	$	119,340	$	1,415,669	$	—	$	1,535,009
Belgium		—		1,088,951		—		1,088,951
Canada		8,261,114		—		—		8,261,114
China		266,084		—		—		266,084
Finland		—		2,737,765		—		2,737,765
France		—		13,391,705		—		13,391,705
Germany		—		7,152,932		—		7,152,932
Hong Kong		—		5,243,518		—		5,243,518
Ireland		571,893		724,278		—		1,296,171
Israel		300,232		—		—		300,232
Italy		—		138,217		—		138,217
Japan		—		20,331,669		—		20,331,669
Luxembourg		—		275,170		—		275,170
Netherlands		—		6,746,934		—		6,746,934
Norway		—		632,983		—		632,983
Republic of Korea		—		501,560		—		501,560
Singapore		—		378,794		—		378,794
Spain		—		5,378,480		—		5,378,480
Sweden		—		3,931,456		—		3,931,456
Switzerland		—		4,891,741		—		4,891,741
United Kingdom		247,003		27,159,830		—		27,406,833
United States		331,540		18,753,080		—		19,084,620
Preferred Stock*
Germany		—		175,861		—		175,861
Short-Term Investments		—		4,554,978		—		4,554,978
Total Investments	$	10,097,206	$	125,605,571	$	—	$	135,702,777

Notes to Portfolio of Investments (Unaudited) (Continued)

Strategic Emerging Markets Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Australia	$	—	$	705,618	$	—	$	705,618
Brazil		6,866,803		—		—		6,866,803
Chile		782,345		140,720		—		923,065
China		22,908,168		7,356,973		—		30,265,141
France		—		7,134,921		—		7,134,921
Hong Kong		—		1,730,538		—		1,730,538
India		—		21,511,030		—		21,511,030
Indonesia		—		951,405		—		951,405
Italy		369,812		1,820,669		—		2,190,481
Japan		—		580,319		—		580,319
Mexico		13,022,454		—		—		13,022,454
Netherlands		67,813		—		—		67,813
Peru		1,231,908		—		—		1,231,908
Philippines		—		1,317,003		—		1,317,003
Portugal		—		760,953		—		760,953
Republic of Korea		—		8,327,605		—		8,327,605
Russia		—		—		—+		—
South Africa		—		710,830		—		710,830
Switzerland		—		4,030,258		—		4,030,258
Taiwan		—		9,484,556		—		9,484,556
United Kingdom		177,708		—		—		177,708
Preferred Stock
Brazil		743,273		—		—		743,273
Warrants		74,423		—		—		74,423
Short-Term Investments		—		4,873,791		—		4,873,791
Total Investments	$	46,244,707	$	71,437,189	$	—	$	117,681,896

* 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.

** Unfunded loan commitments are valued at the unrealized appreciation (depreciation) on the commitment.

+ Represents a security at $0 value as of June 30, 2023.

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.

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, 2023, 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.

Notes to Portfolio of Investments (Unaudited) (Continued)

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.

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, public health, and diplomatic risks. In addition, fluctuations in currency exchange rates may favorably or unfavorably 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, less stringent investor protection and disclosure standards, less reliable settlement practices, greater price volatility, higher relative rates of inflation, greater political, economic, and social instability, greater custody and operational risks, greater risk of new or inconsistent government treatment of or restrictions on issuers and instruments, and greater volatility in currency exchange rates, and are more susceptible to environmental problems.

Notes to Portfolio of Investments (Unaudited) (Continued)

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 and 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.

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, 2023, 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	$	275,689,030	$	240,059	$	(43,125,223	)	$	(42,885,164	)
Inflation-Protected and Income Fund		286,925,377		213,944		(11,592,370	)		(11,378,426	)
Core Bond Fund		908,764,231		1,274,518		(86,946,795	)		(85,672,277	)
Diversified Bond Fund		193,602,724		300,118		(22,604,692	)		(22,304,574	)
High Yield Fund		445,799,723		2,891,270		(36,725,248	)		(33,833,978	)
Balanced Fund		116,842,473		9,424,955		(6,188,084	)		3,236,871
Disciplined Value Fund		69,550,953		6,882,005		(3,446,904	)		3,435,101
Main Street Fund		61,980,549		14,275,137		(1,466,614	)		12,808,523
Disciplined Growth Fund		149,167,755		23,918,050		(2,664,076	)		21,253,974
Small Cap Opportunities Fund		294,807,159		64,811,820		(17,794,835	)		47,016,985
Global Fund		135,279,551		93,461,378		(5,453,343	)		88,008,035
International Equity Fund		129,356,063		13,847,327		(7,500,613	)		6,346,714
Strategic Emerging Markets Fund		110,491,190		12,288,963		(5,098,257	)		7,190,706

4. New Accounting Pronouncements

In June 2022, FASB issued Accounting Standards Update 2022-03 — Fair Value Measurement (Topic 820) — Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions (“ASU 2022-03”). ASU 2022-03 clarifies the guidance in Topic 820 to indicate that a contractual sale restriction should not be considered in the fair value of an equity security subject to such a restriction, and requires entities with investments in equity securities subject to contractual sale restrictions to disclose certain qualitative and quantitative information about such securities. ASU 2022-03 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2023, and allows for early adoption. ASU 2022-03 will only be applicable to an equity security in which the contractual arrangement that restricts its sale is executed or modified on or after the adoption date. Management is currently evaluating the impact of applying this update.

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 may 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 factors, and the effects of other infectious illness outbreaks, epidemics, or pandemics, 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, other countries, and certain international organizations. 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. These sanctions and any other intergovernmental actions (including retaliatory actions by the Russian government) 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.