Massmutual Premier Funds NPORT-P MassMutual Balanced Fund (Jun 2024 report)

MassMutual Short-Duration Bond Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 87.1%
CORPORATE DEBT — 45.8%
Aerospace & Defense — 0.5%
Boeing Co.
6.298% 5/01/29 (a)	$	860,000	$	872,092
Agriculture — 0.2%
Imperial Brands Finance PLC
5.500% 2/01/30 (a) (f)		307,000		304,136
Auto Manufacturers — 1.2%
General Motors Financial Co., Inc.
5.800% 1/07/29		480,000		484,272
Hyundai Capital America
6.100% 9/21/28 (a)		550,000		564,778
Nissan Motor Acceptance Co. LLC
1.850% 9/16/26 (a)		1,095,000		1,002,606
				2,051,656
Banks — 10.9%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		1,585,000		1,562,922
ABQ Finance Ltd.
2.000% 7/06/26 (a)		1,200,000		1,116,000
Bank Negara Indonesia Persero Tbk. PT
5.280% 4/05/29 (a)		500,000		495,880
Bank of America Corp. 1 day USD SOFR + 0.960%
1.734% VRN 7/22/27		975,000		903,752
Barclays PLC
5.200% 5/12/26		440,000		434,949
1 day USD SOFR + 1.740% 5.690% VRN 3/12/30		445,000		446,193
BNP Paribas SA 1 day USD SOFR + 1.590%
5.497% VRN 5/20/30 (a)		274,000		272,911
BPCE SA
5.281% 5/30/29 (a)		430,000		428,365
Cooperatieve Rabobank UA 1 yr. CMT + 1.120%
5.447% VRN 3/05/30 (a)		445,000		445,027
Credit Agricole SA 1 day USD SOFR + 1.860%
6.316% VRN 10/03/29 (a)		596,000		612,106
Danske Bank AS 1 yr. CMT + 0.730%
1.549% VRN 9/10/27 (a)		1,200,000		1,101,912
Deutsche Bank AG 1 day USD SOFR + 1.219%
2.311% VRN 11/16/27		715,000		660,136
Discover Bank 5 yr. USD SOFR ICE Swap Rate + 1.730%
5.974% VRN 8/09/28		625,000		624,212
HDFC Bank Ltd.
5.196% 2/15/27 (a)		500,000		496,810
Huntington Bancshares, Inc. 1 day USD SOFR + 2.020%
6.208% VRN 8/21/29		560,000		571,778

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

	Principal Amount		Value
ING Groep NV 1 day USD SOFR + 1.440%
5.335% VRN 3/19/30	$	445,000	$	443,260
JP Morgan Chase & Co. 3 mo. USD Term SOFR + 1.522%
4.203% VRN 7/23/29		600,000		577,416
Lloyds Banking Group PLC 1 yr. CMT + 1.700%
5.871% VRN 3/06/29		775,000		785,723
Macquarie Group Ltd. 1 day USD SOFR + 1.069%
1.340% VRN 1/12/27 (a)		1,050,000		982,851
Morgan Stanley 1 day USD SOFR + 1.630%
5.449% VRN 7/20/29		1,135,000		1,142,001
Societe Generale SA 1 yr. CMT + 1.300%
2.797% VRN 1/19/28 (a)		1,200,000		1,107,333
Swedbank AB
5.407% 3/14/29 (a)		445,000		445,164
Synovus Bank
5.625% 2/15/28		653,000		630,930
Truist Financial Corp. 1 day USD SOFR + 2.446%
7.161% VRN 10/30/29		515,000		546,860
UBS Group AG 1 yr. CMT + 1.080%
1.364% VRN 1/30/27 (a)		875,000		817,150
Wells Fargo & Co. 1 day USD SOFR + 1.740%
5.574% VRN 7/25/29		570,000		575,171
				18,226,812
Chemicals — 1.7%
Celanese US Holdings LLC
6.165% 7/15/27		425,000		431,339
6.350% 11/15/28		560,000		575,389
MEGlobal Canada ULC
5.000% 5/18/25 (a)		1,050,000		1,039,106
Yara International ASA
4.750% 6/01/28 (a)		900,000		876,823
				2,922,657
Commercial Services — 1.2%
Element Fleet Management Corp.
5.643% 3/13/27 (a)		534,000		535,288
Triton Container International Ltd.
2.050% 4/15/26 (a)		1,500,000		1,398,304
				1,933,592
Computers — 0.4%
Genpact Luxembourg SARL/Genpact USA, Inc.
6.000% 6/04/29		213,000		215,443
Kyndryl Holdings, Inc.
2.700% 10/15/28		475,000		422,315
				637,758
Diversified Financial Services — 2.1%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
2.450% 10/29/26		450,000		419,775
Avolon Holdings Funding Ltd.
4.250% 4/15/26 (a)		450,000		437,080
5.750% 11/15/29 (a)		430,000		427,378
BGC Group, Inc.
4.375% 12/15/25		1,340,000		1,304,061

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

	Principal Amount		Value
Macquarie Airfinance Holdings Ltd.
6.400% 3/26/29 (a)	$	113,000	$	114,911
REC Ltd.
2.250% 9/01/26 (a)		800,000		744,216
				3,447,421
Electric — 2.5%
Adani Transmission Step-One Ltd.
4.000% 8/03/26 (a)		500,000		473,661
Alliant Energy Finance LLC
1.400% 3/15/26 (a)		1,630,000		1,508,468
DTE Energy Co.
5.100% 3/01/29		455,000		451,277
Enel Finance International NV
5.125% 6/26/29 (a)		425,000		418,373
Engie SA
5.250% 4/10/29 (a)		870,000		867,382
Pacific Gas & Electric Co.
5.550% 5/15/29		405,000		405,911
				4,125,072
Engineering & Construction — 0.1%
MasTec, Inc.
5.900% 6/15/29		208,000		208,877
Entertainment — 0.4%
Warnermedia Holdings, Inc.
4.054% 3/15/29		750,000		692,620
Food — 1.4%
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
2.500% 1/15/27		1,425,000		1,325,888
Smithfield Foods, Inc.
4.250% 2/01/27 (a)		995,000		957,835
				2,283,723
Hand & Machine Tools — 0.1%
Regal Rexnord Corp.
6.050% 4/15/28		250,000		253,003
Home Furnishing — 0.3%
LG Electronics, Inc.
5.625% 4/24/27 (a)		250,000		251,255
5.625% 4/24/29 (a)		288,000		291,243
				542,498
Housewares — 0.5%
Newell Brands, Inc.
6.375% 9/15/27 (b)		780,000		769,194
Insurance — 3.5%
Athene Global Funding
1.730% 10/02/26 (a)		935,000		859,039
CNO Global Funding
2.650% 1/06/29 (a)		525,000		459,616

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

	Principal Amount		Value
GA Global Funding Trust
5.500% 1/08/29 (a)	$	890,000	$	890,007
Lincoln National Corp., (Acquired 4/19/23, Cost $731,429),
3.800% 3/01/28 (c)		825,000		788,494
RGA Global Funding
5.448% 5/24/29 (a)		538,000		539,272
Sammons Financial Group, Inc.
4.450% 5/12/27 (a)		2,365,000		2,284,707
				5,821,135
Internet — 0.7%
Prosus NV
3.257% 1/19/27 (a)		1,250,000		1,169,896
Investment Companies — 4.8%
Antares Holdings LP
2.750% 1/15/27 (a)		485,000		440,613
3.950% 7/15/26 (a)		880,000		831,920
Ares Capital Corp.
3.875% 1/15/26		435,000		420,005
5.950% 7/15/29		430,000		422,716
Ares Strategic Income Fund
6.350% 8/15/29 (a)		770,000		763,674
Blackstone Private Credit Fund
2.625% 12/15/26		1,325,000		1,211,784
Blackstone Secured Lending Fund
5.875% 11/15/27		195,000		193,583
Blue Owl Credit Income Corp.
4.700% 2/08/27		1,015,000		965,854
Blue Owl Technology Finance Corp. II
6.750% 4/04/29 (a)		881,000		861,883
Golub Capital BDC, Inc.
2.500% 8/24/26		1,115,000		1,025,629
HPS Corporate Lending Fund
6.250% 9/30/29 (a) (b)		425,000		420,259
6.750% 1/30/29 (a)		522,000		525,837
				8,083,757
Lodging — 0.1%
Las Vegas Sands Corp.
6.000% 8/15/29		235,000		236,213
Machinery - Construction & Mining — 0.6%
Weir Group PLC
2.200% 5/13/26 (a)		1,036,000		972,347
Media — 1.1%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.125% 5/01/27 (a)		575,000		552,084
Charter Communications Operating LLC/Charter Communications Operating Capital
2.250% 1/15/29		575,000		491,442
Paramount Global
3.700% 6/01/28		950,000		856,636
				1,900,162

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

	Principal Amount		Value
Oil & Gas — 0.9%
Parkland Corp.
5.875% 7/15/27 (a)	$	455,000	$	449,034
Patterson-UTI Energy, Inc.
3.950% 2/01/28		1,220,000		1,148,902
				1,597,936
Packaging & Containers — 0.3%
Smurfit Kappa Treasury ULC
5.200% 1/15/30 (a)		440,000		437,739
Pharmaceuticals — 1.5%
Bayer US Finance II LLC
4.375% 12/15/28 (a)		525,000		498,566
Hikma Finance USA LLC
3.250% 7/09/25 (a)		1,150,000		1,114,090
Viatris, Inc.
2.300% 6/22/27		980,000		894,693
				2,507,349
Pipelines — 1.0%
Enbridge, Inc.
5.300% 4/05/29		435,000		435,701
EnLink Midstream Partners LP
4.850% 7/15/26		450,000		441,636
EQM Midstream Partners LP
5.500% 7/15/28		450,000		443,135
Harvest Midstream I LP
7.500% 9/01/28 (a)		391,000		397,256
				1,717,728
Real Estate — 0.6%
MAF Sukuk Ltd.
4.500% 11/03/25 (a)		1,025,000		1,010,110
Real Estate Investment Trusts (REITS) — 4.7%
CubeSmart LP
2.250% 12/15/28		650,000		572,336
EPR Properties
4.500% 6/01/27		900,000		860,907
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		1,125,000		985,653
GLP Capital LP/GLP Financing II, Inc.
5.375% 4/15/26		570,000		565,346
Omega Healthcare Investors, Inc.
4.750% 1/15/28		989,000		956,953
Piedmont Operating Partnership LP
9.250% 7/20/28		800,000		853,492
Store Capital LLC
4.500% 3/15/28		475,000		452,079
Sun Communities Operating LP
5.500% 1/15/29		430,000		430,115
VICI Properties LP/VICI Note Co., Inc.
3.750% 2/15/27 (a)		600,000		569,872
Vornado Realty LP
2.150% 6/01/26		1,200,000		1,106,734

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

	Principal Amount		Value
WEA Finance LLC
3.500% 6/15/29 (a)	$	500,000	$	448,506
				7,801,993
Retail — 0.2%
Advance Auto Parts, Inc.
5.900% 3/09/26		343,000		343,039
Savings & Loans — 0.2%
Nationwide Building Society
4.000% 9/14/26 (a)		297,000		285,401
Semiconductors — 0.2%
SK Hynix, Inc.
5.500% 1/16/27 (a)		300,000		299,154
Software — 0.1%
Take-Two Interactive Software, Inc.
5.400% 6/12/29		119,000		119,681
Telecommunications — 1.1%
Sprint Capital Corp.
6.875% 11/15/28		650,000		689,066
Tower Bersama Infrastructure Tbk. PT
4.250% 1/21/25 (a)		1,100,000		1,089,660
				1,778,726
Venture Capital — 0.7%
Hercules Capital, Inc.
2.625% 9/16/26		1,338,000		1,226,508
TOTAL CORPORATE DEBT (Cost $78,311,971)				76,579,985
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 41.3%
Automobile Asset-Backed Securities — 0.6%
AmeriCredit Automobile Receivables Trust, Series 2020-3, Class D
1.490% 9/18/26		339,000		328,843
Westlake Automobile Receivables Trust, Series 2022-2A, Class D
5.480% 9/15/27 (a)		700,000		693,748
				1,022,591
Commercial Mortgage-Backed Securities — 3.5%
BAMLL Commercial Mortgage Securities Trust, Series 2019-BPR, Class CMP,
4.024% VRN 11/05/32 (a) (d)		2,280,000		2,063,244
CF Hippolyta Issuer LLC, Series 2020-1, Class B1
2.280% 7/15/60 (a)		577,448		539,172
JP Morgan Chase Commercial Mortgage Securities Trust, Series 2013-LC11, Class C,
3.958% VRN 4/15/46 (d)		1,015,000		611,162
One New York Plaza Trust
Series 2020-1NYP, Class C, 1 mo. USD Term SOFR + 2.314% 7.644% FRN 1/15/36 (a)		2,106,000		1,937,100

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

	Principal Amount		Value
Series 2020-1NYP, Class D, 1 mo. USD Term SOFR + 2.864% 8.194% FRN 1/15/36 (a)	$	760,000	$	642,614
				5,793,292
Home Equity Asset-Backed Securities — 0.0%
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD Term SOFR + 1.014%
4.358% FRN 10/25/34		53,768		49,972
Other Asset-Backed Securities — 19.0%
321 Henderson Receivables I LLC, Series 2006-3A, Class A1, 1 mo. USD Term SOFR + 0.314%
5.643% FRN 9/15/41 (a)		31,231		30,865
522 Funding CLO Ltd., Series 2018-3A, Class BR, 3 mo. USD Term SOFR + 1.812%
7.136% FRN 10/20/31 (a)		2,352,000		2,353,047
Ballyrock CLO Ltd., Series 2020-2A, Class A2R, 3 mo. USD Term SOFR + 1.812%
7.136% FRN 10/20/31 (a)		3,700,000		3,704,914
BHG Securitization Trust, Series 2021-B, Class C
2.240% 10/17/34 (a)		3,736,000		3,347,350
BRE Grand Islander Timeshare Issuer LLC, Series 2019-A, Class B
3.780% 9/26/33 (a)		558,885		533,620
Buttermilk Park CLO Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.600%
6.929% FRN 10/15/31 (a)		1,000,000		1,000,796
Canyon Capital CLO Ltd., Series 2020-1A, Class AR, 3 mo. USD Term SOFR + 1.442%
6.770% FRN 7/15/34 (a)		900,000		900,958
Castlelake Aircraft Structured Trust, Series 2019-1A, Class B
5.095% 4/15/39 (a)		707,996		481,091
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD Term SOFR + 1.242%
6.566% FRN 4/20/31 (a)		743,380		744,027
Elara HGV Timeshare Issuer LLC, Series 2019-A, Class C
3.450% 1/25/34 (a)		1,154,841		1,098,598
Flatiron CLO 20 Ltd., Series 2020-1A, Class AR, 3 mo. USD Term SOFR + 1.380%
6.661% FRN 5/20/36 (a)		1,000,000		1,001,531
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		1,867,789		1,578,485
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		694,835		622,218
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		1,514,236		1,367,291
Hero Funding Trust
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		508,913		438,444
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		100,855		87,975
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		246,580		223,118
Series 2015-1A, Class A, 3.840% 9/21/40 (a)		162,496		150,061
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		81,945		73,289
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		654,337		607,899
Hilton Grand Vacations Trust, Series 2019-AA, Class C
2.840% 7/25/33 (a)		508,024		482,374
Horizon Aircraft Finance III Ltd., Series 2019-2, Class B
4.458% 11/15/39 (a)		1,757,143		931,282
Mosaic Solar Loan Trust, Series 2018-2GS, Class A
4.200% 2/22/44 (a)		524,896		482,153
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		85,486		81,857

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

	Principal Amount		Value
Neuberger Berman CLO XX Ltd., Series 2015-20A, Class ARR, 3 mo. USD Term SOFR + 1.422%
6.750% FRN 7/15/34 (a)	$	500,000	$	500,518
Neuberger Berman Loan Advisers CLO 24 Ltd., Series 2017-24A, Class BR, 3 mo. USD Term SOFR + 1.762%
7.088% FRN 4/19/30 (a)		500,000		500,564
Newark BSL CLO 2 Ltd., Series 2017-1A, Class A2R, 3 mo. USD Term SOFR + 1.662%
6.985% FRN 7/25/30 (a)		1,375,000		1,376,037
Oxford Finance Funding LLC, Series 2020-1A, Class B
4.037% 2/15/28 (a)		339,904		334,520
PFS Financing Corp., Series 2022-A, Class B
2.770% 2/15/27 (a)		800,000		781,506
PVONE 2023-1, LLC, Series 2023-2A, Class A
7.670% 9/17/35 (a)		840,527		843,056
RR 8 Ltd., Series 2020-8A, Class A1R, 3 mo. USD Term SOFR + 1.350%
6.675% FRN 7/15/37 (a)		1,000,000		1,000,073
Sierra Timeshare Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		125,091		121,659
Trafigura Securitisation Finance PLC, Series 2021-1A, Class B
1.780% 1/15/25 (a)		4,048,000		4,036,803
				31,817,979
Student Loans Asset-Backed Securities — 5.6%
Chase Education Loan Trust, Series 2007-A, Class B, 90 day USD SOFR Average + 0.482%
5.835% FRN 3/28/68		307,986		286,920
College Avenue Student Loans LLC, Series 2017-A, Class A1, 1 mo. USD Term SOFR + 1.764%
7.110% FRN 11/26/46 (a)		310,188		312,642
Commonbond Student Loan Trust
Series 2017-AGS, Class B, 3.470% 5/25/41 (a)		219,039		179,525
Series 2018-AGS, Class C, 3.820% 2/25/44 (a)		98,680		77,372
Series 2018-BGS, Class C, 4.120% 9/25/45 (a)		80,965		64,963
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		37,950		32,290
Series 2017-AGS, Class C, 5.280% 5/25/41 (a)		149,221		131,444
ELFI Graduate Loan Program LLC, Series 2018-A, Class B
4.000% 8/25/42 (a)		214,648		194,050
Goal Structured Solutions Trust, Series 2015-1, Class B, 30 day USD SOFR Average + 1.614%
6.938% FRN 9/25/43 (a)		100,000		88,798
Laurel Road Prime Student Loan Trust
Series 2019-A, Class BFX, 3.000% 10/25/48 (a)		1,210,820		1,134,442
Series 2017-B, Class CFX, 3.610% 8/25/42 (a)		688,402		664,389
Nelnet Student Loan Trust, Series 2018-5A, Class B, 1 mo. USD Term SOFR + 1.564%
6.910% FRN 2/25/67 (a)		1,000,000		943,994
SLM Student Loan Trust
Series 2005-4, Class B, 90 day USD SOFR Average + 0.442% 5.790% FRN 7/25/55		415,949		390,349
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.820% FRN 10/25/40		388,896		364,940
Series 2005-5, Class B, 90 day USD SOFR Average + 0.512% 5.860% FRN 10/25/40		448,079		410,921
Series 2005-8, Class B, 90 day USD SOFR Average + 0.572% 5.920% FRN 1/25/55		303,083		287,649
Series 2004-1 Class B, 90 day USD SOFR Average + 0.762% 6.110% FRN 7/25/39		268,920		256,992

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

	Principal Amount		Value
Series 2003-4, Class B, 90 day USD SOFR Average + 0.912% 6.264% FRN 6/15/38	$	170,100	$	161,899
SMB Private Education Loan Trust
Series 2016-C, Class A2B, 1 mo. USD Term SOFR + 1.214% 6.543% FRN 9/15/34 (a)		15,829		15,812
Series 2023-D, Class A1B, 30 day USD SOFR Average + 1.650% 6.983% FRN 9/15/53 (a)		917,984		930,551
SoFi Alternative Trust, Series 2019-C, Class PT,
5.370% VRN 1/25/45 (a) (d)		1,443,171		1,390,097
SoFi Professional Loan Program LLC, Series 2019-A, Class BFX
4.110% 6/15/48 (a)		870,000		771,886
Wachovia Student Loan Trust, Series 2005-1, Class B, 90 day USD SOFR Average + 0.562%
5.910% FRN 10/25/40		257,395		222,601
				9,314,526
Whole Loan Collateral Collateralized Mortgage Obligations — 12.6%
Angel Oak Mortgage Trust, Series 2021-3, Class M1,
2.479% VRN 5/25/66 (a) (d)		6,583,000		4,660,233
Banc of America Mortgage Trust, Series 2004-G, Class 2A7,
5.457% VRN 8/25/34 (d)		4,716		4,661
Credit Suisse Mortgage Trust, Series 2021-NQM4, Class M1,
2.472% VRN 5/25/66 (a) (d)		7,095,350		4,833,788
Merrill Lynch Mortgage Investors Trust, Series 2004-A1, Class 2A2,
5.759% VRN 2/25/34 (d)		33,569		31,527
New Residential Mortgage Loan Trust, Series 2020-NQM1, Class M1,
3.207% VRN 1/26/60 (a) (d)		2,252,000		1,961,551
OBX Trust, Series 2021-NQM1, Class M1,
2.219% VRN 2/25/66 (a) (d)		2,501,000		1,681,958
TRK Trust, Series 2021-INV1, Class M1,
2.585% VRN 7/25/56 (a) (d)		1,222,000		900,632
Verus Securitization Trust
Series 2021-1, Class M1, 1.968% VRN 1/25/66 (a) (d)		2,247,000		1,681,805
Series 2019-INV3, Class M1, 3.279% VRN 11/25/59 (a) (d)		2,129,000		1,964,961
Series 2020-4, Class M1, 3.291% VRN 5/25/65 (a) (d)		3,602,000		3,302,876
				21,023,992
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $79,385,958)				69,022,352
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 + 2.160% 6.377% 3/01/37		46,316		46,631
TOTAL BONDS & NOTES (Cost $157,745,128)				145,648,968
TOTAL LONG-TERM INVESTMENTS (Cost $157,745,128)				145,648,968
SHORT-TERM INVESTMENTS — 11.2%
Commercial Paper — 8.3%
Avangrid, Inc.
5.705% 7/01/24 (a)		2,000,000		1,999,068

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

	Principal Amount		Value
EIDP, Inc.
5.753% 12/02/24 (a)	$	2,000,000	$	1,952,766
NextEra Energy Capital Holdings, Inc.
5.703% 7/09/24 (a)		4,000,000		3,993,330
Parker-Hannifin Corp.
5.546% 7/23/24 (a)		2,000,000		1,992,349
Penske Truck Leasing Co. LP
5.710% 9/16/24		3,000,000		2,962,289
VW Credit, Inc.
5.649% 7/25/24 (a)		1,000,000		995,843
				13,895,645
	Number of Shares
Investment of Cash Collateral from Securities Loaned — 0.3%
State Street Navigator Securities Lending Government Money Market Portfolio (g)		437,550		437,550
	Principal Amount
Repurchase Agreement — 2.6%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (h)	$	4,334,541		4,334,541
TOTAL SHORT-TERM INVESTMENTS (Cost $18,669,844)				18,667,736
TOTAL INVESTMENTS — 98.3% (Cost $176,414,972) (i)				164,316,704
Other Assets/(Liabilities) — 1.7%				2,769,992
NET ASSETS — 100.0%			$	167,086,696

Abbreviation Legend

CLO Collateralized Loan Obligation

CMT Constant Maturity Treasury Index

DAC Designated Activity Company

FRN Floating Rate Note

ICE Inter-Continental Exchange

SOFR Secured Overnight Financing Rate

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, 2024, the aggregate market value of these securities amounted to $118,672,833 or 71.02% of net assets.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2024, was $1,191,718 or 0.71% of net assets. The Fund received $781,005 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) Restricted security. Certain securities are restricted to resale. At June 30, 2024, these securities amounted to a value of $788,494 or 0.47% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(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, 2024.

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

(h) Maturity value of $4,335,119. Collateralized by U.S. Government Agency obligations with a rate of 5.385%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $4,421,251.

(i) 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	9/30/24		469	$	95,525,674	$	252,920
Short
U.S. Treasury Long Bond	9/19/24		24	$	(2,836,337)	$	(3,163)
U.S. Treasury Ultra 10 Year	9/19/24		117		(13,166,008)		(117,148)
U.S. Treasury Ultra Bond	9/19/24		1		(123,950)		(1,394)
U.S. Treasury Note 5 Year	9/30/24		357		(37,782,274)		(266,117)
						$	(387,822)

MassMutual Inflation-Protected and Income Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 87.2%
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 57.4%
Automobile Asset-Backed Securities — 15.1%
American Credit Acceptance Receivables Trust, Series 2021-2, Class E
2.540% 7/13/27 (a)	$	4,700,000	$	4,581,392
BOF URSA VI Funding Trust I, Series 2023-CAR2, Class A2
5.542% 10/27/31 (a)		1,808,953		1,802,117
Carvana Auto Receivables Trust, Series 2021-N3, Class B
0.660% 6/12/28		986,125		930,531
Drive Auto Receivables Trust
Series 2021-1, Class D, 1.450% 1/16/29		4,669,177		4,557,023
Series 2021-3, Class C, 1.470% 1/15/27		1,682,297		1,663,120
Exeter Automobile Receivables Trust
Series 2021-2A, Class D, 1.400% 4/15/27		2,100,000		2,018,310
Series 2020-3A, Class E, 3.440% 8/17/26 (a)		3,700,000		3,631,950
Series 2020-2A, Class D, 4.730% 4/15/26 (a)		269,097		268,910
Series 2023-5A, Class A2, 6.200% 4/15/26		501,064		501,454
Flagship Credit Auto Trust, Series 2021-2, Class C
1.270% 6/15/27 (a)		5,835,000		5,659,030
Ford Credit Auto Owner Trust, Series 2018-1, Class C
3.490% 7/15/31 (a)		3,500,000		3,450,194
OneMain Direct Auto Receivables Trust, Series 2022-1A, Class C
5.310% 6/14/29 (a)		1,100,000		1,051,896
Santander Drive Auto Receivables Trust, Series 2021-2, Class D
1.350% 7/15/27		3,683,235		3,588,611
Westlake Automobile Receivables Trust
Series 2020-3A, Class D, 1.650% 2/17/26 (a)		954,437		950,114
Series 2023-4A, Class A2, 6.230% 1/15/27 (a)		1,742,707		1,745,537
				36,400,189
Commercial Mortgage-Backed Securities — 4.5%
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD Term SOFR + 1.797%
7.126% FRN 7/15/35 (a)		1,150,000		1,142,987
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class D, 1 mo. USD Term SOFR + 2.047%
7.376% FRN 12/15/37 (a)		250,836		250,444
CARS-DB4 LP, Series 2020-1A, Class A1
2.690% 2/15/50 (a)		1,258,158		1,229,593
COMM Mortgage Trust, Series 2015-LC19, Class D
2.867% 2/10/48 (a)		2,457,000		2,199,964
Extended Stay America Trust
Series 2021-ESH, Class D, 1 mo. USD Term SOFR + 2.364% 7.694% FRN 7/15/38 (a)		1,180,133		1,177,552
Series 2021-ESH, Class F, 1 mo. USD Term SOFR + 3.814% 9.144% FRN 7/15/38 (a)		1,634,030		1,627,902
KREF Ltd., Series 2021-FL2, Class D, 1 mo. USD Term SOFR + 2.314%
7.643% FRN 2/15/39 (a)		900,000		810,380

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

	Principal Amount		Value
Ready Capital Mortgage Financing LLC, Series 2023-FL12, Class A, 1 mo. USD Term SOFR + 2.335%
7.680% FRN 5/25/38 (a)	$	2,399,259	$	2,403,490
				10,842,312
Home Equity Asset-Backed Securities — 1.2%
Home Equity Asset Trust, Series 2005-9, Class M1, 1 mo. USD Term SOFR + 0.729%
6.075% FRN 4/25/36		1,029,938		1,004,441
JP Morgan Mortgage Acquisition Trust, Series 2007-CH3, Class A5, 1 mo. USD Term SOFR + 0.374%
5.720% FRN 3/25/37		197,809		192,713
Point Securitization Trust, Series 2024-1, Class A1
6.500% 6/25/54 (a)		1,587,745		1,554,663
Structured Asset Securities Corp. Mortgage Loan Trust
Series 2006-BC6, Class A4, 1 mo. USD Term SOFR + 0.284% 5.630% FRN 1/25/37		102,002		100,649
Series 2006-WF1, Class M4, 1 mo. USD Term SOFR + 0.759% 6.105% FRN 2/25/36		11,107		11,097
				2,863,563
Other Asset-Backed Securities — 24.0%
321 Henderson Receivables I LLC, Series 2006-3A, Class A1, 1 mo. USD Term SOFR + 0.314%
5.643% FRN 9/15/41 (a)		33,573		33,180
ACHV ABS Trust, Series 2024-1PL, Class A
5.900% 4/25/31 (a)		1,596,361		1,598,208
Affirm Asset Securitization Trust
Series 2021-Z1, Class A, 1.070% 8/15/25 (a)		75,365		75,197
Series 2021-Z2, Class A, 1.170% 11/16/26 (a)		167,345		164,652
Series 2022-X1, Class A, 1.750% 2/15/27 (a)		104,423		103,747
Series 2023-A, Class 1A, 6.610% 1/18/28 (a)		10,710,000		10,753,304
Series 2023-X1, Class A, 7.110% 11/15/28 (a)		3,279,873		3,291,856
Series 2023-X1, Class B, 7.770% 11/15/28 (a)		2,250,000		2,277,254
Alterna Funding, LLC
Series 2024-1A, Class A, 6.260% 5/16/39 (a) (b) (c)		2,300,000		2,303,515
Series 2024-1A, Class B, 7.136% 5/16/39 (a) (b) (c)		1,370,000		1,370,000
BHG Securitization Trust
Series 2021-B, Class A, 0.900% 10/17/34 (a)		340,434		335,176
Series 2021-A, Class A, 1.420% 11/17/33 (a)		1,759,891		1,685,128
Series 2022-C, Class A, 5.320% 10/17/35 (a)		1,143,652		1,140,474
Series 2023-A, Class A, 5.550% 4/17/36 (a)		2,258,901		2,246,240
Conn's Receivables Funding LLC, Series 2024-A, Class A
7.050% 1/16/29 (a)		1,571,397		1,573,416
FCI Funding LLC
Series 2021-1A, Class A, 1.130% 4/15/33 (a)		321,623		317,154
Series 2021-1A, Class B, 1.530% 4/15/33 (a)		192,199		189,298
FNA VI LLC, Series 2021-1A, Class A
1.350% 1/10/32 (a)		2,294,375		2,105,476
Hilton Grand Vacations Trust, Series 2022-2A, Class C
5.570% 1/25/37 (a)		891,860		876,514
Marlette Funding Trust, Series 2023-2A, Class A
6.040% 6/15/33 (a)		443,024		443,197
MCA Fund Holding LLC, Series 2020-1, Class A
3.250% 11/15/35 (a)		608,253		580,005
MVW Owner Trust, Series 2018-1A, Class A
3.450% 1/21/36 (a)		279,869		279,027

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

	Principal Amount		Value
NP SPE II LLC, Series 2019-1A, Class A1
2.574% 9/20/49 (a)	$	103,286	$	99,508
Oxford Finance Funding LLC, Series 2020-1A, Class A2
3.101% 2/15/28 (a)		3,849,115		3,788,985
Pagaya AI Debt Grantor Trust, Series 2024-5, Class A
6.278% 10/15/31 (a)		2,200,000		2,201,653
Pagaya AI Debt Trust, Series 2022-1, Class A
2.030% 10/15/29 (a)		814,909		811,763
PFS Financing Corp.
Series 2021-B, Class B, 1.090% 8/15/26 (a)		1,878,000		1,865,488
Series 2022-A, Class B, 2.770% 2/15/27 (a)		1,100,000		1,074,571
PVONE 2023-1, LLC, Series 2023-2A, Class A
7.670% 9/17/35 (a)		985,709		988,675
RAM LLC, Series 2024-1, Class A
6.669% 2/15/39 (a)		3,257,719		3,245,272
Reach ABS Trust, Series 2024-1A, Class A
6.300% 2/18/31 (a)		1,055,527		1,058,171
Reach Financial LLC, Series 2023-1A, Class A
7.050% 2/18/31 (a)		1,712,993		1,717,570
SBA Tower Trust
2.836% 1/15/50 (a)		1,375,000		1,350,850
Series 2014-2A, Class C, 3.869% STEP 10/15/49 (a)		3,200,000		3,181,796
Sierra Timeshare Receivables Funding LLC
Series 2019-3A, Class C, 3.000% 8/20/36 (a)		336,803		331,924
Series 2019-2A, Class C, 3.120% 5/20/36 (a)		296,124		295,321
Series 2019-3A, Class D, 4.180% 8/20/36 (a)		303,801		299,123
Trafigura Securitisation Finance PLC, Series 2021-1A, Class B
1.780% 1/15/25 (a)		1,800,000		1,795,021
				57,847,709
Student Loans Asset-Backed Securities — 5.9%
Commonbond Student Loan Trust
Series 2021-AGS, Class B, 1.400% 3/25/52 (a)		127,716		95,918
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		9,831		8,365
Series 2019-AGS, Class A2, 1 mo. USD Term SOFR + 1.014% 6.360% FRN 1/25/47 (a)		134,724		130,048
ELFI Graduate Loan Program LLC, Series 2018-A, Class A1, 1 mo. USD Term SOFR + 0.864%
6.210% FRN 8/25/42 (a)		190,864		189,833
JP Morgan Student Loan Trust, Series 2007-A, Class B, 90 day USD SOFR Average + 0.612%
5.960% FRN 6/28/39 (a)		158,066		141,767
Laurel Road Prime Student Loan Trust, Series 2019-A, Class A1FX
2.340% 10/25/48 (a)		47,069		45,632
Navient Private Education Refi Loan Trust
Series 2021-A, Class A, 0.840% 5/15/69 (a)		3,896,328		3,444,333
Series 2020-HA, Class A, 1.310% 1/15/69 (a)		819,847		754,450
Navient Student Loan Trust, Series 2016-7A, Class A, 30 day USD SOFR Average + 1.264%
6.600% FRN 3/25/66 (a)		998,953		1,002,116
Nelnet Student Loan Trust
Series 2005-2, Class B, 90 day USD SOFR Average + 0.432% 5.785% FRN 3/23/37		523,365		505,552
Series 2006-2, Class B, 90 day USD SOFR Average + 0.462% 5.810% FRN 1/25/38		269,434		230,297
Series 2006-3, Class B, 90 day USD SOFR Average + 0.512% 5.865% FRN 6/25/41		112,706		101,453

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

	Principal Amount		Value
Series 2004-3, Class B, 90 day USD SOFR Average + 0.612% 5.960% FRN 10/25/40	$	545,845	$	530,703
Series 2014-2A, Class B, 30 day USD SOFR Average + 1.614% 6.950% FRN 6/25/41 (a)		295,000		285,655
SLC Student Loan Trust
Series 2006-2, Class B, 90 day USD SOFR Average + 0.492% 5.844% FRN 12/15/39		165,185		148,025
Series 2005-2, Class B, 90 day USD SOFR Average + 0.542% 5.894% FRN 3/15/40		531,281		483,268
SLM Student Loan Trust
Series 2006-4, Class B, 90 day USD SOFR Average + 0.462% 5.810% FRN 1/25/70		117,536		109,746
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.820% FRN 10/25/40		200,789		188,420
Series 2006-2, Class B, 90 day USD SOFR Average + 0.482% 5.830% FRN 1/25/41		208,602		194,787
Series 2005-8, Class B, 90 day USD SOFR Average + 0.572% 5.920% FRN 1/25/55		181,850		172,589
Series 2004-3, Class B, 90 day USD SOFR Average + 0.732% 6.080% FRN 10/25/64		114,888		108,561
SMB Asset-Backed Repackaging Trust, Series 2024-R1, Class M
6.000% 9/15/54 (a)		4,108,740		4,057,541
SMB Private Education Loan Trust, Series 2019-A, Class A2B, 1 mo. USD Term SOFR + 0.984%
6.313% FRN 7/15/36 (a)		565,432		561,206
SoFi Alternative Trust, Series 2019-C, Class PT,
5.370% VRN 1/25/45 (a) (d)		364,898		351,479
SoFi Professional Loan Program LLC, Series 2018-D, Class A2FX
3.600% 2/25/48 (a)		451,103		437,168
				14,278,912
Whole Loan Collateral Collateralized Mortgage Obligations — 6.7%
Angel Oak Mortgage Trust, Series 2022-2, Class A1,
3.353% VRN 1/25/67 (a) (d)		1,920,514		1,775,598
BRAVO Residential Funding Trust, Series 2021-NQM2, Class A3,
1.435% VRN 3/25/60 (a) (d)		472,313		443,056
Cascade Funding Mortgage Trust, Series 2021-EBO1, Class A,
0.985% VRN 11/25/50 (a) (d)		276,655		268,483
CIM Trust, Series 2019-INV3, Class A11, 30 day USD SOFR Average + 1.064%
5.500% FRN 8/25/49 (a)		635,077		607,857
COLT Mortgage Loan Trust, Series 2022-1, Class A1,
2.284% VRN 12/27/66 (a) (d)		7,268,623		6,342,155
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (d)		307,931		284,161
First Franklin Mortgage Loan Trust, Series 2006-FF15, Class A5, 1 mo. USD Term SOFR + 0.274%
5.620% FRN 11/25/36		216,000		211,417
OBX Trust
Series 2021-NQM2, Class A2, 1.357% VRN 5/25/61 (a) (d)		567,433		450,434
Series 2020-EXP1, Class 2A2, 1 mo. USD Term SOFR + 1.064% 6.410% FRN 2/25/60 (a)		259,882		249,332
PSMC Trust, Series 2020-2, Class A2,
3.000% VRN 5/25/50 (a) (d)		731,979		632,932
STAR Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (d)		2,827,403		2,470,402
Starwood Mortgage Residential Trust
Series 2020-1, Class M1, 2.878% VRN 2/25/50 (a) (d)		1,000,000		847,451

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

	Principal Amount		Value
Series 2019-INV1, Class A3, 2.916% VRN 9/27/49 (a) (d)	$	858,798	$	827,758
Verus Securitization Trust
Series 2021-3, Class A3, 1.437% VRN 6/25/66 (a) (d)		806,915		683,116
Series 2019-INV2, Class A3, 4.219% VRN 7/25/59 (a) (d)		166,415		163,211
				16,257,363
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $140,791,131)				138,490,048
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 10.5%
Whole Loans — 10.5%
Federal Home Loan Mortgage Corp. STACR REMICS Trust
Series 2021-DNA6, Class M1, 30 day USD SOFR Average + 0.800% 6.135% FRN 10/25/41 (a)		2,087,583		2,088,310
Series 2021-HQA3, Class M1, 30 day USD SOFR Average + 0.850% 6.185% FRN 9/25/41 (a)		6,168,289		6,155,369
Series 2021-DNA7, Class M1, 30 day USD SOFR Average + 0.850% 6.185% FRN 11/25/41 (a)		1,223,362		1,223,117
Series 2022-DNA1, Class M1A, 30 day USD SOFR Average + 1.000% 6.335% FRN 1/25/42 (a)		472,023		472,256
Series 2022-DNA2, Class M1A, 30 day USD SOFR Average + 1.300% 6.635% FRN 2/25/42 (a)		1,861,874		1,868,934
Series 2020-DNA1, Class M2, 30 day USD SOFR Average + 1.814% 7.150% FRN 1/25/50 (a)		490,703		493,558
Series 2022-DNA3, Class M1A, 30 day USD SOFR Average + 2.000% 7.335% FRN 4/25/42 (a)		2,255,912		2,285,767
Series 2018-DNA3, Class M2A, 30 day USD SOFR Average + 2.214% 7.550% FRN 9/25/48 (a)		253,093		254,662
Series 2022-DNA5, Class M1A, 30 day USD SOFR Average + 2.950% 8.285% FRN 6/25/42 (a)		2,259,496		2,321,960
Federal National Mortgage Association Connecticut Avenue Securities
Series 2023-R05, Class 1M1, 30 day USD SOFR Average + 1.900% 7.235% FRN 6/25/43 (a)		1,105,425		1,120,514
Series 2022-R05, Class 2M1, 30 day USD SOFR Average + 1.900% 7.235% FRN 4/25/42 (a)		570,926		576,182
Series 2023-R03, Class 2M1, 30 day USD SOFR Average + 2.500% 7.835% FRN 4/25/43 (a)		2,326,524		2,378,749
Series 2022-R07, Class 1M1, 30 day USD SOFR Average + 2.950% 8.285% FRN 6/25/42 (a)		3,920,558		4,055,280
				25,294,658
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $25,125,898)				25,294,658
U.S. TREASURY OBLIGATIONS — 19.3%
U.S. Treasury Bonds & Notes — 19.3%
U.S. Treasury Inflation-Indexed Bonds
0.125% 2/15/51		782,711		452,417
0.125% 2/15/52		1,013,589		575,271
0.250% 2/15/50		731,652		446,479
0.625% 2/15/43		204,540		153,546
0.750% 2/15/42		971,208		758,500
0.750% 2/15/45		1,251,469		937,118
0.875% 2/15/47		779,250		584,914
1.000% 2/15/46		661,565		516,049

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

	Principal Amount		Value
1.000% 2/15/48	$	444,969	$	340,572
1.000% 2/15/49		504,581		383,129
1.375% 2/15/44		1,345,180		1,152,632
1.500% 2/15/53		738,276		620,064
1.750% 1/15/28		1,197,184		1,178,023
2.125% 2/15/40		507,672		502,379
2.125% 2/15/41		658,536		652,786
2.125% 2/15/54		510,760		496,435
2.500% 1/15/29		949,137		965,730
3.375% 4/15/32		353,248		385,620
3.875% 4/15/29		476,765		514,936
U.S. Treasury Inflation-Indexed Notes
0.125% 4/15/25		2,427,460		2,361,305
0.125% 1/15/30		2,315,207		2,083,633
0.125% 7/15/30		2,384,402		2,133,385
0.125% 1/15/31		2,529,093		2,232,311
0.125% 7/15/31		2,105,478		1,848,792
0.125% 1/15/32		2,035,746		1,762,340
0.250% 7/15/29		1,470,756		1,350,487
0.500% 1/15/28		1,906,470		1,796,395
0.625% 7/15/32		2,589,648		2,321,939
0.750% 7/15/28 (f)		1,523,719		1,447,895
0.875% 1/15/29		1,986,560		1,881,913
1.125% 1/15/33		2,525,952		2,336,928
1.250% 4/15/28		2,090,400		2,018,894
1.375% 7/15/33		2,859,388		2,699,896
1.625% 10/15/27		2,910,408		2,862,913
1.750% 1/15/34		1,733,830		1,682,233
2.375% 10/15/28		2,149,455		2,177,494
				46,615,353
TOTAL U.S. TREASURY OBLIGATIONS (Cost $50,110,428)				46,615,353
TOTAL BONDS & NOTES (Cost $216,027,457)				210,400,059
TOTAL LONG-TERM INVESTMENTS (Cost $216,027,457)				210,400,059
SHORT-TERM INVESTMENTS — 12.7%
Commercial Paper — 11.9%
American Honda Finance Corp.
5.714% 9/16/24		2,000,000		1,975,110
5.719% 9/05/24		4,000,000		3,957,151
Avangrid, Inc.
5.500% 7/03/24 (a)		3,000,000		2,997,672
Bayer Corp.
6.361% 8/15/24 (a)		2,000,000		1,984,901
6.388% 7/24/24 (a)		3,000,000		2,987,796
CRH America Finance, Inc.
5.730% 10/08/24 (a)		3,000,000		2,952,434
5.733% 10/15/24 (a)		4,000,000		3,932,255
J M Smucker Co.
5.508% 7/01/24 (a)		5,000,000		4,997,740

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

	Principal Amount		Value
L3Harris Technologies, Inc.
6.407% 8/27/24 (a)	$	3,000,000	$	2,972,250
				28,757,309
Repurchase Agreement — 0.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (g)		1,834,586		1,834,586
TOTAL SHORT-TERM INVESTMENTS (Cost $30,594,593)				30,591,895
TOTAL INVESTMENTS — 99.9% (Cost $246,622,050) (h)				240,991,954
Other Assets/(Liabilities) — 0.1%				313,590
NET ASSETS — 100.0%			$	241,305,544

Abbreviation Legend

FRN Floating Rate Note

REMICS Real Estate Mortgage Investment Conduits

SOFR Secured Overnight Financing Rate

STEP Step Coupon 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, 2024, the aggregate market value of these securities amounted to $169,056,987 or 70.06% of net assets.

(b) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2024, these securities amounted to a value of $3,673,515 or 1.52% of net assets.

(c) Investment is valued using significant unobservable inputs.

(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, 2024.

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

(g) Maturity value of $1,834,830. Collateralized by U.S. Government Agency obligations with a rate of 5.385%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $1,871,403.

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

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Ultra Bond	9/19/24		2	$	247,926	$	2,762
Short
U.S. Treasury Long Bond	9/19/24		1	$	(116,920)	$	(1,393)
U.S. Treasury Ultra 10 Year	9/19/24		8		(899,241)		(9,009)
U.S. Treasury Note 2 Year	9/30/24		305		(62,097,543)		(189,176)
U.S. Treasury Note 5 Year	9/30/24		31		(3,280,814)		(23,108)
						$	(222,686)

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 4.706%		Annually		11/07/25	USD	15,000,000	$	(33,214)	$	—	$	(33,214)
12-Month USD SOFR	Annually		Fixed 4.077%		Annually		2/02/26	USD	12,000,000		(124,535)		—		(124,535)
12-Month USD SOFR	Annually		Fixed 4.213%		Annually		2/06/26	USD	12,000,000		(154,741)		—		(154,741)
Fixed 2.490%	Maturity		U.S. Consumer Price Index		Maturity		7/31/26	USD	6,000,000		47,138		—		47,138
Fixed 2.482%	Maturity		U.S. Consumer Price Index		Maturity		9/07/26	USD	3,000,000		22,282		—		22,282
										$	(243,070)	$	—	$	(243,070)

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 (Paid)/ Received

Unrealized Appreciation (Depreciation)

Fed Funds + 16.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

Barclays PLC

11/26/24

USD

62,688,489

$

491,992

$

—

$

491,992

Fed Funds + 18.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

BNP Paribas SA

7/31/24

USD

62,663,383

1,013,216

—

1,013,216

Fed Funds + 20.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

Goldman Sachs International

8/30/24

USD

13,450,654

217,486

—

217,486

Fed Funds + 18.0 BP

Maturity

Bloomberg US Treasury Inflation Notes TR Index

Maturity

Goldman Sachs International

10/31/24

USD

43,000,000

1,081,944

—

1,081,944

$

2,804,638

$

—

$

2,804,638

Currency Legend

USD U.S. Dollar

MassMutual Core Bond Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 99.3%
CORPORATE DEBT — 38.2%
Aerospace & Defense — 0.5%
Boeing Co.
5.930% 5/01/60	$	650,000	$	581,133
6.858% 5/01/54 (a)		718,000		736,792
Embraer Netherlands Finance BV
7.000% 7/28/30 (a)		1,550,000		1,617,462
				2,935,387
Agriculture — 0.5%
Imperial Brands Finance PLC
5.500% 2/01/30 (a) (g)		1,161,000		1,150,171
Reynolds American, Inc.
5.850% 8/15/45		940,000		866,991
Viterra Finance BV
3.200% 4/21/31 (a)		1,290,000		1,114,194
				3,131,356
Airlines — 0.0%
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27		266,903		261,032
Auto Manufacturers — 0.2%
General Motors Co.
5.150% 4/01/38		785,000		722,121
General Motors Financial Co., Inc.
3.100% 1/12/32		815,000		684,977
				1,407,098
Banks — 6.9%
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		1,765,000		1,406,825
3 mo. USD Term SOFR + 1.302% 3.419% VRN 12/20/28		1,485,000		1,396,381
5 yr. CMT + 2.000% 3.846% VRN 3/08/37		2,025,000		1,774,644
Bank of Montreal 5 yr. CMT + 2.979%
4.800% VRN (b)		1,550,000		1,531,514
Barclays PLC
5 yr. CMT + 5.867% 6.125% VRN (b)		1,500,000		1,469,988
5 yr. CMT + 5.431% 8.000% VRN (b)		1,368,000		1,388,985
BNP Paribas SA
5 yr. CMT + 3.196% 4.625% VRN (a) (b)		1,075,000		967,473
1 day USD SOFR + 1.590% 5.497% VRN 5/20/30 (a)		848,000		844,629
BPCE SA 1 day USD SOFR + 1.730%
3.116% VRN 10/19/32 (a)		1,830,000		1,489,080
Citigroup, Inc. 1 day USD SOFR + 3.813%
5.000% VRN (b)		1,241,000		1,232,963

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Discover Bank 5 yr. USD SOFR ICE Swap Rate + 1.730%
5.974% VRN 8/09/28	$	2,863,000	$	2,859,391
HSBC Holdings PLC
1 day USD SOFR + 1.285% 2.206% VRN 8/17/29		1,355,000		1,191,131
1 day USD SOFR + 1.520% 5.733% VRN 5/17/32		1,240,000		1,243,042
ING Groep NV 5 yr. USD Swap + 4.446%
6.500% VRN (b)		1,925,000		1,903,874
JP Morgan Chase & Co. 3 mo. USD Term SOFR + 2.515%
2.956% VRN 5/13/31		1,235,000		1,082,378
Lloyds Banking Group PLC
5 yr. USD ICE Swap + 4.496% 7.500% VRN (b)		975,000		974,648
1 yr. CMT + 3.750% 7.953% VRN 11/15/33		1,075,000		1,206,250
5 yr. CMT + 3.913% 8.000% VRN (b)		950,000		971,093
Macquarie Bank Ltd. 5 yr. CMT + 1.700%
3.052% VRN 3/03/36 (a)		3,225,000		2,677,188
Morgan Stanley
1 day USD SOFR + 1.360% 2.484% VRN 9/16/36		1,290,000		1,020,546
1 day USD SOFR + 2.620% 5.297% VRN 4/20/37		2,435,000		2,331,551
National Australia Bank Ltd. 5 yr. CMT + 1.700%
3.347% VRN 1/12/37 (a)		2,800,000		2,366,742
NatWest Group PLC 5 yr. CMT + 5.625%
6.000% VRN (b)		1,950,000		1,907,562
Societe Generale SA
1 yr. CMT + 1.300% 2.797% VRN 1/19/28 (a)		1,525,000		1,407,235
5 yr. USD ICE Swap + 5.873% 8.000% VRN (a) (b)		1,975,000		1,972,719
SVB Financial Group 5 yr. CMT + 3.074%
4.250% (b) (c)		301,000		1,505
Swedbank AB 5 yr. CMT + 4.134%
5.625% VRN (a) (b)		1,200,000		1,194,000
Synovus Bank
5.625% 2/15/28		1,531,000		1,479,255
Toronto-Dominion Bank 5 yr. CMT + 4.075%
8.125% VRN 10/31/82		2,737,000		2,836,523
				44,129,115
Beverages — 0.3%
Bacardi Ltd./Bacardi-Martini BV
5.900% 6/15/43 (a)		437,000		424,711
Molson Coors Beverage Co.
4.200% 7/15/46		1,479,000		1,181,985
				1,606,696
Biotechnology — 0.2%
Amgen, Inc.
5.600% 3/02/43		887,000		874,162
5.750% 3/02/63		665,000		651,189
				1,525,351
Chemicals — 0.3%
Dow Chemical Co.
5.600% 2/15/54		701,000		673,912
LYB International Finance III LLC
4.200% 5/01/50		1,350,000		1,027,556
				1,701,468

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Computers — 0.3%
Genpact Luxembourg SARL/Genpact USA, Inc.
6.000% 6/04/29	$	537,000	$	543,159
Kyndryl Holdings, Inc.
2.700% 10/15/28 (d)		1,175,000		1,044,673
6.350% 2/20/34		570,000		579,111
				2,166,943
Diversified Financial Services — 3.1%
AerCap Ireland Capital DAC/AerCap Global Aviation Trust
3.300% 1/30/32		1,885,000		1,619,623
American Express Co. 1 day USD SOFR + 1.630%
5.915% VRN 4/25/35		976,000		991,586
Apollo Global Management, Inc.
5.800% 5/21/54		1,219,000		1,199,669
ARES Finance Co. III LLC 5 yr. CMT + 3.237%
4.125% VRN 6/30/51 (a)		1,715,000		1,593,396
ARES Finance Co. LLC
4.000% 10/08/24 (a)		2,180,000		2,160,639
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		2,970,000		2,671,258
3.250% 2/15/27 (a)		1,545,000		1,445,921
BGC Group, Inc.
6.600% 6/10/29 (a)		1,600,000		1,592,130
Blue Owl Finance LLC
3.125% 6/10/31 (a)		1,765,000		1,470,405
4.125% 10/07/51 (a)		1,114,000		795,437
Charles Schwab Corp. 5 yr. CMT + 3.168%
4.000% VRN (b)		2,075,000		1,946,881
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		1,989,054		1,914,797
				19,401,742
Electric — 2.1%
AES Corp. 5 yr. CMT + 3.201%
7.600% VRN 1/15/55		973,000		985,030
Cleveland Electric Illuminating Co.
5.950% 12/15/36		539,000		546,058
CMS Energy Corp.
4.700% 3/31/43		600,000		517,252
Dominion Energy South Carolina, Inc.
6.250% 10/15/53		246,000		264,846
Dominion Energy, Inc.
5.950% 6/15/35		620,000		628,927
Duke Energy Florida LLC
6.200% 11/15/53		632,000		669,481
Emera, Inc. 3 mo. USD LIBOR + 5.440%
6.750% VRN 6/15/76		1,625,000		1,612,720
Entergy Mississippi LLC
5.850% 6/01/54		775,000		771,301
Entergy Texas, Inc.
5.800% 9/01/53		1,112,000		1,111,686
Indianapolis Power & Light Co.
5.700% 4/01/54 (a)		358,000		350,308
IPALCO Enterprises, Inc.
5.750% 4/01/34 (a)		547,000		542,925

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
MidAmerican Energy Co.
5.300% 2/01/55	$	487,000	$	463,495
NextEra Energy Capital Holdings, Inc. 5 yr. CMT + 2.547%
3.800% VRN 3/15/82		1,165,000		1,073,910
RWE Finance US LLC
5.875% 4/16/34 (a)		1,600,000		1,601,787
Sempra
5 yr. CMT + 2.868% 4.125% VRN 4/01/52		960,000		883,632
6.000% 10/15/39		171,000		172,980
Tampa Electric Co.
4.450% 6/15/49		421,000		352,574
Virginia Electric & Power Co.
5.350% 1/15/54		918,000		866,136
				13,415,048
Entertainment — 0.2%
Warnermedia Holdings, Inc.
4.279% 3/15/32 (d)		1,250,000		1,091,034
Food — 0.8%
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
3.625% 1/15/32		2,285,000		1,972,591
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		1,555,000		1,244,055
3.000% 10/15/30 (a)		1,208,000		1,025,630
4.250% 2/01/27 (a)		1,075,000		1,034,846
				5,277,122
Gas — 0.2%
CenterPoint Energy Resources Corp.
6.625% 11/01/37		1,370,000		1,487,833
Hand & Machine Tools — 0.2%
Stanley Black & Decker, Inc. 5 yr. CMT + 2.657%
4.000% VRN 3/15/60		1,475,000		1,338,745
Health Care - Services — 0.3%
HCA, Inc.
5.900% 6/01/53		1,385,000		1,348,751
Humana, Inc.
5.750% 4/15/54		815,000		785,350
				2,134,101
Insurance — 7.8%
Allianz SE 5 yr. CMT + 2.973%
3.500% VRN (a) (b)		4,400,000		4,098,129
Allstate Corp., (Acquired 11/30/18, Cost $3,292,364), 3 mo. USD Term SOFR + 3.200%
8.522% VRN 8/15/53 (e)		3,220,000		3,217,518
Arthur J Gallagher & Co.
5.750% 7/15/54		564,000		547,677
Ascot Group Ltd.
4.250% 12/15/30 (a)		2,025,000		1,683,208
Athene Global Funding
2.673% 6/07/31 (a)		2,820,000		2,327,743
AXIS Specialty Finance LLC 5 yr. CMT + 3.186%
4.900% VRN 1/15/40		1,530,000		1,400,871

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CNO Financial Group, Inc.
6.450% 6/15/34	$	803,000	$	802,231
CNO Global Funding
2.650% 1/06/29 (a)		1,340,000		1,173,117
Corebridge Financial, Inc. 5 yr. CMT + 3.846%
6.875% VRN 12/15/52		2,899,000		2,925,238
Enstar Finance LLC
HYB, 5 yr. CMT + 4.006% 5.500% VRN 1/15/42		900,000		869,223
5 yr. CMT + 5.468% 5.750% VRN 9/01/40		2,400,000		2,349,789
Equitable Holdings, Inc. 5 yr. CMT + 4.736%
4.950% VRN (b)		925,000		910,597
Fairfax Financial Holdings Ltd.
6.100% 3/15/55 (a)		1,585,000		1,531,021
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		1,006,000		832,039
5 yr. CMT + 3.796% 4.700% VRN 10/15/51 (a)		3,275,000		3,041,454
6.750% 3/15/54 (a)		414,000		409,331
5 yr. CMT + 3.608% 7.950% VRN 10/15/54 (a)		596,000		599,108
Hanwha Life Insurance Co. Ltd. 5 yr. CMT + 1.850%
3.379% VRN 2/04/32 (a)		2,365,000		2,214,269
Hill City Funding Trust
4.046% 8/15/41 (a)		3,710,000		2,713,538
Jackson National Life Global Funding
5.600% 4/10/26 (a)		1,401,000		1,397,792
Liberty Mutual Group, Inc. 5 yr. CMT + 3.315%
4.125% VRN 12/15/51 (a)		1,295,000		1,212,763
Markel Group, Inc.
6.000% 5/16/54		1,387,000		1,372,732
MetLife Capital Trust IV
7.875% 12/15/67 (a)		825,000		883,660
Pine Street Trust III
6.223% 5/15/54 (a)		1,660,000		1,658,412
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		4,555,000		3,780,544
4.450% 5/12/27 (a)		80,000		77,284
4.750% 4/08/32 (a)		90,000		80,048
6.875% 4/15/34 (a)		831,000		851,977
USF&G Capital I
8.500% 12/15/45 (a)		1,015,000		1,017,229
Vitality Re XV Ltd. 3 mo. U.S. Treasury Bill Rate + 2.500%
7.855% FRN 1/08/29 (a)		3,276,000		3,271,741
				49,250,283
Investment Companies — 2.8%
Antares Holdings LP
2.750% 1/15/27 (a)		985,000		894,854
3.950% 7/15/26 (a)		2,800,000		2,647,019
8.500% 5/18/25 (a)		1,185,000		1,198,494
ARES Capital Corp.
5.875% 3/01/29		982,000		967,859
Ares Strategic Income Fund
6.350% 8/15/29 (a)		1,956,000		1,939,930
Blackstone Private Credit Fund
2.625% 12/15/26		3,350,000		3,063,755
Blackstone Secured Lending Fund
5.875% 11/15/27		730,000		724,695
Blue Owl Credit Income Corp.
4.700% 2/08/27		1,855,000		1,765,181

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Blue Owl Technology Finance Corp. II
6.750% 4/04/29 (a)	$	1,303,000	$	1,274,726
Golub Capital BDC, Inc.
2.500% 8/24/26		1,065,000		979,636
6.000% 7/15/29		1,311,000		1,286,121
HPS Corporate Lending Fund
6.250% 9/30/29 (a) (d)		1,135,000		1,122,338
				17,864,608
Media — 0.8%
Charter Communications Operating LLC/Charter Communications Operating Capital
2.300% 2/01/32 (d)		1,165,000		898,464
6.484% 10/23/45		1,745,000		1,593,849
Paramount Global
5 yr. CMT + 3.999% 6.375% VRN 3/30/62		837,000		739,203
6.875% 4/30/36		1,100,000		1,030,080
Time Warner Cable LLC
6.750% 6/15/39		600,000		580,420
				4,842,016
Mining — 0.2%
Anglo American Capital PLC
5.750% 4/05/34 (a)		977,000		974,979
Oil & Gas — 1.8%
BP Capital Markets PLC 5 yr. CMT + 2.153%
6.450% VRN (b)		720,000		739,608
EQT Corp.
7.000% STEP 2/01/30 (d)		1,800,000		1,910,209
Ovintiv, Inc.
6.500% 8/15/34		885,000		925,646
6.500% 2/01/38		530,000		544,970
7.100% 7/15/53		1,549,000		1,699,033
Patterson-UTI Energy, Inc.
3.950% 2/01/28		1,305,000		1,228,948
5.150% 11/15/29		1,350,000		1,312,064
Petroleos Mexicanos
5.350% 2/12/28		845,000		759,403
6.375% 1/23/45		585,000		379,258
6.500% 3/13/27		295,000		281,095
6.625% 6/15/38		202,000		143,565
Santos Finance Ltd.
3.649% 4/29/31 (a)		1,500,000		1,310,620
				11,234,419
Oil & Gas Services — 0.2%
Nov, Inc.
3.950% 12/01/42		1,628,000		1,230,286
Pharmaceuticals — 0.9%
Cigna Group
4.800% 7/15/46		1,010,000		888,115
CVS Health Corp.
5.050% 3/25/48		370,000		318,795
5.875% 6/01/53		675,000		646,825
6.125% 9/15/39		895,000		895,037

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CVS Pass-Through Trust
5.926% 1/10/34 (a)	$	1,425,697	$	1,412,902
Utah Acquisition Sub, Inc.
5.250% 6/15/46		2,105,000		1,731,559
				5,893,233
Pipelines — 1.2%
Energy Transfer LP
5.950% 5/15/54		651,000		633,923
5 yr. CMT + 5.306% 7.125% VRN (b)		1,625,000		1,609,627
EnLink Midstream Partners LP
5.050% 4/01/45		625,000		513,709
5.450% 6/01/47		1,150,000		997,688
Enterprise Products Operating LLC 3 mo. USD Term SOFR + 3.295%
5.250% VRN 8/16/77		1,250,000		1,195,397
Plains All American Pipeline LP 3 mo. USD Term SOFR + 4.372%
9.694% VRN (b)		2,590,000		2,578,626
				7,528,970
Private Equity — 0.7%
Apollo Management Holdings LP 5 yr. CMT + 3.266%
4.950% VRN 1/14/50 (a) (d)		1,805,000		1,763,381
Brookfield Finance, Inc.
5.968% 3/04/54		1,491,000		1,474,573
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		920,000		635,769
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		1,182,000		775,073
				4,648,796
Real Estate Investment Trusts (REITS) — 3.6%
Agree LP
5.625% 6/15/34		555,000		549,305
American Homes 4 Rent LP
5.500% 7/15/34		1,610,000		1,581,890
Broadstone Net Lease LLC
2.600% 9/15/31		2,126,000		1,689,502
EPR Properties
3.600% 11/15/31		880,000		733,638
4.500% 6/01/27		2,595,000		2,482,281
Equinix Europe 2 Financing Corp. LLC
5.500% 6/15/34		1,150,000		1,148,131
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		2,675,000		2,343,664
Kimco Realty OP LLC
4.125% 12/01/46		555,000		424,454
4.450% 9/01/47		1,055,000		841,719
Omega Healthcare Investors, Inc.
3.625% 10/01/29		800,000		714,209
Piedmont Operating Partnership LP
2.750% 4/01/32		1,055,000		773,762
9.250% 7/20/28		772,000		823,620
Rexford Industrial Realty LP
2.125% 12/01/30		1,075,000		879,488
Service Properties Trust
4.950% 10/01/29		1,320,000		1,001,469

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Store Capital LLC
4.500% 3/15/28	$	700,000	$	666,221
4.625% 3/15/29		2,950,000		2,786,107
WEA Finance LLC
2.875% 1/15/27 (a)		1,965,000		1,825,373
WEA Finance LLC/Westfield UK & Europe Finance PLC
3.750% 9/17/24 (a)		1,575,000		1,563,258
				22,828,091
Software — 0.4%
Electronic Arts, Inc.
2.950% 2/15/51		1,050,000		680,093
Microsoft Corp.
2.921% 3/17/52		1,425,000		967,355
Oracle Corp.
6.900% 11/09/52		631,000		706,280
				2,353,728
Telecommunications — 1.0%
AT&T, Inc.
3.550% 9/15/55		4,280,000		2,885,535
British Telecommunications PLC
9.625% STEP 12/15/30		281,000		343,103
Cisco Systems, Inc.
5.300% 2/26/54		268,000		262,483
Motorola Solutions, Inc.
5.400% 4/15/34		724,000		717,748
Sprint Capital Corp.
8.750% 3/15/32		1,260,000		1,515,544
T-Mobile USA, Inc.
6.000% 6/15/54		922,000		953,313
				6,677,726
Venture Capital — 0.7%
Hercules Capital, Inc.
2.625% 9/16/26		3,352,000		3,072,687
3.375% 1/20/27		1,295,000		1,199,183
				4,271,870
TOTAL CORPORATE DEBT (Cost $257,573,207)				242,609,076
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 26.8%
Commercial Mortgage-Backed Securities — 9.4%
Bank, Series 2020-BN30, Class MCDF,
3.016% VRN 12/15/53 (f)		3,165,000		1,676,881
Benchmark Mortgage Trust
Series 2021-B23, Class 360A, 2.852% VRN 2/15/54 (a) (f)		3,150,000		2,348,009
Series 2021-B23, Class 360B, 2.852% VRN 2/15/54 (a) (f)		4,800,000		3,304,555
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (f)		3,100,000		1,860,000
BGME Trust
Series 2021-VR, Class C, 3.094% VRN 1/10/43 (a) (f)		16,248,000		12,780,454
Series 2021-VR, Class D, 3.094% VRN 1/10/43 (a) (f)		3,790,000		2,847,030
BMO Mortgage Trust, Series 2023-C4, Class A5,
5.117% VRN 2/15/56 (f)		1,300,000		1,281,854

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
BX Trust, Series 2023-LIFE, Class C
5.884% 2/15/28 (a)	$	1,300,000	$	1,246,733
CARS-DB4 LP
Series 2020-1A, Class A3, 3.250% 2/15/50 (a)		551,995		487,109
Series 2020-1A, Class A6, 3.810% 2/15/50 (a)		485,502		414,631
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		1,259,000		1,022,565
COLEM Mortgage Trust, Series 2022-HLNE, Class D,
2.543% VRN 4/12/42 (a) (f)		1,900,000		1,367,585
COMM Mortgage Trust
Series 2015-CR23, Class B, 4.183% VRN 5/10/48 (f)		1,200,000		1,144,432
Series 2015-CR23, Class C, 4.413% VRN 5/10/48 (f)		1,050,000		986,403
DROP Mortgage Trust
Series 2021-FILE, Class C, 1 mo. USD Term SOFR + 2.364% 7.694% FRN 10/15/43 (a)		3,365,000		2,982,078
Series 2021-FILE, Class D, 1 mo. USD Term SOFR + 2.864% 8.194% FRN 10/15/43 (a)		1,162,000		926,528
GS Mortgage Securities Trust, Series 2019-GC39, Class C,
4.005% VRN 5/10/52 (f)		1,357,000		1,011,600
KREF Ltd.
Series 2021-FL2, Class B, 1 mo. USD Term SOFR + 1.764% 7.093% FRN 2/15/39 (a)		3,500,000		3,336,811
Series 2021-FL2, Class C, 1 mo. USD Term SOFR + 2.114% 7.443% FRN 2/15/39 (a)		5,800,000		5,433,599
Series 2021-FL2, Class D, 1 mo. USD Term SOFR + 2.314% 7.643% FRN 2/15/39 (a)		3,200,000		2,881,353
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
7.194% FRN 3/15/38 (a)		2,505,591		2,408,492
MFT Mortgage Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		1,185,000		799,515
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (f)		1,278,000		825,007
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD Term SOFR + 2.214%
7.544% FRN 7/15/39 (a)		4,879,000		3,322,667
Wells Fargo Commercial Mortgage Trust
Series 2018-C45, Class B, 4.556% 6/16/51		390,000		354,295
Series 2021-FCMT, Class B, 1 mo. USD Term SOFR + 1.964% 7.294% FRN 5/15/31 (a)		3,000,000		2,908,754
				59,958,940
Home Equity Asset-Backed Securities — 0.3%
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD Term SOFR + 1.314%
6.660% FRN 11/25/35 (a)		209,143		206,530
Unlock HEA Trust, Series 2024-1, Class A
7.000% 4/25/39 (a)		1,523,366		1,495,233
				1,701,763
Other Asset-Backed Securities — 12.3%
AASET Trust, Series 2021-2A, Class B
3.538% 1/15/47 (a)		930,167		819,249
Anchorage Capital CLO 9 Ltd., Series 2016-9A, Class CR2, 3 mo. USD Term SOFR + 2.512%
7.840% FRN 7/15/32 (a)		830,000		830,523
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. USD Term SOFR + 2.550%
7.875% FRN 4/26/35 (a)		1,750,000		1,761,977

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Apidos CLO XLVIII Ltd., Series 2024-48A, Class A1, 3 mo. USD Term SOFR + 1.440%
6.755% FRN 7/25/37 (a)	$	2,000,000	$	2,001,018
Apidos CLO XXXII Ltd., Series 2019-32A, Class B1R, 3 mo. USD Term SOFR + 1.500%
7.139% FRN 1/20/33 (a)		1,750,000		1,750,000
Ares Loan Funding VI Ltd., Series 2024-ALF6A, Class A1, 3 mo. USD Term SOFR + 1.470%
1.000% FRN 7/10/37 (a) (g)		1,000,000		1,000,515
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.647% FRN 4/18/35 (a)		1,000,000		1,000,442
Ballyrock CLO 26 Ltd., Series 2024-26A, Class A1A, 3 mo. USD Term SOFR + 1.510%
6.844% FRN 7/25/37 (a)		1,700,000		1,702,497
Benefit Street Partners CLO V-B Ltd., Series 2018-5BA, Class A1R, 3 mo. USD Term SOFR + 1.530%
6.862% FRN 7/20/37 (a)		2,000,000		2,000,948
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)		445,613		433,952
Buttermilk Park CLO Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.600%
6.929% FRN 10/15/31 (a)		2,000,000		2,001,592
CIFC Funding Ltd., Series 2019-6A, Class A1R, 3 mo. USD Term SOFR + 1.450%
6.778% FRN 7/16/37 (a)		2,650,000		2,660,600
Eaton Vance CLO Ltd., Series 2020-1A, Class CR, 3 mo. USD Term SOFR + 2.312%
7.640% FRN 10/15/34 (a)		400,000		400,170
Elmwood CLO I Ltd., Series 2019-1A, Class A1RR, 3 mo. USD Term SOFR + 1.520%
6.831% FRN 4/20/37 (a)		3,000,000		3,020,757
Flatiron CLO 20 Ltd., Series 2020-1A, Class BR, 3 mo. USD Term SOFR + 1.920%
7.201% FRN 5/20/36 (a)		500,000		500,418
Galaxy XXVI CLO Ltd., Series 2018-26A, Class BR, 3 mo. USD Term SOFR + 2.600%
7.927% FRN 11/22/31 (a)		1,000,000		1,000,939
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		1,978,414		1,671,974
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		768,376		688,073
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		370,728		334,618
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		760,929		687,086
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (f)		967,686		879,444
Harbor Park CLO 18-1 Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.700%
7.030% FRN 1/20/31 (a)		1,300,000		1,301,300
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		319,044		285,495
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		355,542		306,310
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		107,159		93,473
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		333,216		301,511
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		86,147		77,048
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		622,237		578,078
HPS Loan Management Ltd., Series 2023-18A, Class B, 3 mo. USD Term SOFR + 2.950%
8.275% FRN 7/20/36 (a)		1,000,000		1,011,136

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Juniper Valley Park CLO Ltd., Series 2023-1A, Class BR, 3 mo. USD LIBOR + 1.550%
1.000% FRN 7/20/36 (a) (g)	$	1,350,000	$	1,350,000
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		1,445,222		1,322,780
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		1,021,796		932,409
Madison Park Funding XXVIII Ltd., Series 2018-28A, Class B, 3 mo. USD Term SOFR + 1.862%
7.190% FRN 7/15/30 (a)		2,090,000		2,093,317
Marble Point CLO XIX Ltd., Series 2020-3A, Class AR, 3 mo. USD Term SOFR + 1.400%
6.988% FRN 1/19/34 (a)		2,250,000		2,253,593
Mariner Finance Issuance Trust
Series 2021-AA, Class B, 2.330% 3/20/36 (a)		1,771,000		1,589,081
Series 2021-AA, Class C, 2.960% 3/20/36 (a)		835,000		732,394
MidOcean Credit CLO XII Ltd., Series 2023-12A, Class CR, 3 mo. USD Term SOFR + 2.450%
7.777% FRN 4/18/36 (a)		700,000		701,455
MidOcean Credit CLO XIV Ltd., Series 2024-14A, Class A1, 3 mo. USD Term SOFR + 1.580%
6.874% FRN 4/15/37 (a)		2,000,000		2,002,978
Mosaic Solar Loan Trust, Series 2018-1A, Class A
4.010% 6/22/43 (a)		125,581		117,305
Mosaic Solar Loans LLC
Series 2017-2A, Class A, 3.820% 6/22/43 (a)		275,177		255,139
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		116,132		111,201
Neuberger Berman Loan Advisers CLO 45 Ltd., Series 2021-45A, Class B, 3 mo. USD Term SOFR + 1.912%
7.240% FRN 10/14/35 (a)		1,350,000		1,352,354
OCP CLO Ltd., Series 2023-27A, Class BR, 3 mo. USD Term SOFR + 1.700%
7.024% FRN 7/16/35 (a)		2,500,000		2,500,290
Orion CLO Ltd., Series 2024-3A, Class A, 3 mo. USD Term SOFR + 1.560%
6.890% FRN 7/25/37 (a)		1,500,000		1,500,992
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD Term SOFR + 2.112%
7.436% FRN 10/20/34 (a)		550,000		550,432
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD Term SOFR + 1.432%
6.761% FRN 10/30/34 (a)		2,000,000		2,001,712
Rad CLO 4 Ltd., Series 2019-4A, Class B1R, 3 mo. USD Term SOFR + 1.750%
7.074% FRN 4/25/32 (a)		1,100,000		1,102,149
RR 29 Ltd., Series 2024-29RA, Class A1R, 3 mo. USD Term SOFR + 1.390%
1.000% FRN 7/15/39 (a) (g)		2,000,000		2,000,000
RR 7 Ltd., Series 2019-7A, Class A2B, 3 mo. USD Term SOFR + 1.850%
7.179% FRN 1/15/37 (a)		750,000		750,992
Sierra Timeshare Receivables Funding LLC, Series 2021-1A, Class D
3.170% 11/20/37 (a)		511,777		483,584
SNVA, Series 2024-GRID, Class A
5.630% 7/20/51 (a) (h)		1,200,000		1,207,359
Structured Receivables Finance LLC, Series 2010-B, Class A
3.730% 8/15/36 (a)		46,196		45,506
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		540,577		467,142
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		1,028,296		929,780

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Symphony CLO 39 Ltd., Series 2023-39A, Class B, 3 mo. USD Term SOFR + 2.300%
7.624% FRN 4/25/34 (a)	$	1,500,000	$	1,503,269
Symphony CLO 42 Ltd., Series 2024-42A, Class A1, 3 mo. USD Term SOFR + 1.530%
6.837% FRN 4/17/37 (a)		2,000,000		2,008,526
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD Term SOFR + 1.962%
7.286% FRN 1/20/31 (a)		2,440,000		2,445,383
Thrust Engine Leasing DAC
Series 2021-1A, Class A, 4.163% 7/15/40 (a)		3,243,177		2,996,079
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,472,490		1,349,611
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		577,836		510,310
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD Term SOFR + 1.912%
7.236% FRN 10/20/32 (a)		1,100,000		1,101,909
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD Term SOFR + 1.542%
6.866% FRN 4/20/33 (a)		4,200,000		4,203,612
Vivint Solar Financing V LLC, Series 2018-1A, Class B
7.370% 4/30/48 (a)		1,384,603		1,287,395
Voya CLO Ltd., Series 2021-3A, Class B, 3 mo. USD Term SOFR + 1.862%
7.186% FRN 1/20/35 (a)		500,000		501,057
WAVE Trust, Series 2017-1A, Class C
6.656% 11/15/42 (a)		2,278,707		535,520
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		420,452		405,022
				78,302,780
Student Loans Asset-Backed Securities — 2.5%
College Avenue Student Loans LLC
Series 2019-A, Class B, 3.810% 12/28/48 (a)		1,226,590		1,128,556
Series 2019-A, Class C, 4.460% 12/28/48 (a)		819,922		769,997
Education Loan Asset-Backed Trust I
Series 2003-1, Class A2, 6.041% FRN 2/01/43 (a) (f)		1,300,000		1,202,821
Series 2003-2, Class 2A1, 6.258% FRN 8/01/43 (a) (f)		1,950,000		1,818,560
Series 2013-1, Class B1, 30 day USD SOFR Average + 1.114% 6.438% FRN 11/25/33 (a)		474,714		470,567
Higher Education Funding I
Series 2004-1, Class B1, 5.784% FRN 1/01/44 (a) (f)		600,000		516,497
Series 2004-1, Class B2, 5.793% FRN 1/01/44 (a) (f)		600,000		516,601
Navient Student Loan Trust, Series 2018-EA, Class B
4.440% 12/15/59 (a)		730,000		696,512
Nelnet Student Loan Trust
Series 2019-5, Class B, 3.450% 10/25/67 (a)		2,850,000		2,203,272
Series 2014-3A, Class B, 30 day USD SOFR Average + 1.614% 6.950% FRN 10/25/50 (a)		975,000		920,534
Series 2015-2A, Class B, 30 day USD SOFR Average + 1.614% 6.950% FRN 5/26/54 (a)		1,130,000		1,116,575
SLC Student Loan Trust, Series 2005-1, Class B, 90 day USD SOFR Average + 0.462%
5.809% FRN 2/15/45		753,099		674,611
SLM Student Loan Trust
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.820% FRN 10/25/40		1,409,044		1,322,248
Series 2005-8, Class B, 90 day USD SOFR Average + 0.572% 5.920% FRN 1/25/55		881,696		836,797

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SoFi Alternative Trust, Series 2019-C, Class PT,
5.370% VRN 1/25/45 (a) (f)	$	1,694,957	$	1,632,624
				15,826,772
Whole Loan Collateral Collateralized Mortgage Obligations — 2.3%
Banc of America Mortgage Trust, Series 2004-G, Class 2A7,
5.457% VRN 8/25/34 (f)		16,353		16,162
Credit Suisse Mortgage Trust, Series 2021-NQM3, Class M1,
2.317% VRN 4/25/66 (a) (f)		1,670,000		1,110,761
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (f)		4,315,696		3,390,856
New Residential Mortgage Loan Trust, Series 2021-INV1, Class A4,
2.500% VRN 6/25/51 (a) (f)		2,578,124		2,025,640
NMLT Trust, Series 2021-INV1, Class M1,
2.711% VRN 5/25/56 (a) (f)		3,723,000		2,574,346
STAR Trust, Series 2021-1, Class M1,
2.363% VRN 5/25/65 (a) (f)		5,273,000		3,971,081
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (f)		1,840,000		1,200,898
Wells Fargo Mortgage-Backed Securities Trust, Series 2019-1, Class A1,
3.933% VRN 11/25/48 (a) (f)		25,925		23,969
				14,313,713
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $193,598,736)				170,103,968
SOVEREIGN DEBT OBLIGATION — 0.2%
Mexico Government International Bond
4.750% 3/08/44		1,778,000		1,424,151
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $1,789,024)				1,424,151
U.S. Government Agency Obligations and Instrumentalities (i) — 29.5%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. REMICS Series 2178, Class PB 7.000% 8/15/29		38,859		39,894
Pass-Through Securities — 29.5%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		4,106,665		3,265,695
Pool #RA4255 2.000% 1/01/51		8,398,327		6,686,375
Pool #RA5576 2.500% 7/01/51		6,877,498		5,696,804
Pool #SD0905 3.000% 3/01/52		3,272,537		2,804,661
Pool #RA2483 3.500% 6/01/50		4,629,628		4,139,571
Pool #Z40047 4.000% 10/01/41		62,502		59,438
Pool #SD1523 4.000% 8/01/52		4,717,868		4,351,897
Pool #SD1603 4.000% 9/01/52		3,021,604		2,765,496
Pool #SD8266 4.500% 11/01/52		6,843,671		6,458,137
Pool #SD4364 5.500% 10/01/53		4,982,672		4,938,450
Federal National Mortgage Association
Pool #CB0414 2.500% 5/01/51		5,974,052		4,946,590
Pool #FM8596 2.500% 9/01/51		2,117,120		1,753,663
Pool #FS3035 2.500% 4/01/52		7,600,432		6,318,192
Pool #MA3029 3.000% 6/01/32		1,322,972		1,257,795
Pool #MA3090 3.000% 8/01/32		453,254		430,489

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #FS1075 3.000% 3/01/52	$	3,351,118	$	2,894,313
Pool #CB3304 3.000% 4/01/52		5,151,009		4,448,854
Pool #CB3305 3.000% 4/01/52		6,071,973		5,232,892
Pool #AS1304 3.500% 12/01/28		304,520		294,573
Pool #MA1356 3.500% 2/01/43		3,076,343		2,821,891
Pool #CA6096 3.500% 6/01/50		6,174,950		5,478,863
Pool #FM4017 3.500% 8/01/50		331,185		296,024
Pool #CB3842 3.500% 6/01/52		9,727,858		8,673,061
Pool #CA1909 4.500% 6/01/48		1,980,605		1,893,168
Pool #CB3866 4.500% 6/01/52		5,276,743		5,010,812
Pool #CB4129 4.500% 7/01/52		4,708,195		4,448,847
Pool #AD6437 5.000% 6/01/40		170,240		170,225
Pool #AD6996 5.000% 7/01/40		1,125,138		1,125,449
Pool #AL8173 5.000% 2/01/44		405,086		404,817
Government National Mortgage Association
Pool #781038 6.500% 5/15/29		12,909		13,093
Pool #781468 6.500% 7/15/32		1,186		1,211
Pool #781496 6.500% 9/15/32		5,153		5,246
Pool #781124 7.000% 12/15/29		1,895		1,921
Pool #781319 7.000% 7/15/31		38,818		39,587
Pool #581417 7.000% 7/15/32		6,365		6,436
Pool #565982 7.000% 7/15/32		9,869		10,141
Pool #441009 8.000% 11/15/26		64		64
Pool #522777 8.000% 12/15/29		2,358		2,410
Pool #523043 8.000% 3/15/30		87		90
Pool #529134 8.000% 3/15/30		991		1,027
Pool #477036 8.000% 4/15/30		101		104
Pool #503157 8.000% 4/15/30		8,441		8,747
Pool #528714 8.000% 4/15/30		790		821
Pool #544640 8.000% 11/15/30		6,974		7,258
Pool #531298 8.500% 8/15/30		274		280
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		2,412,469		2,119,143
Pool #MA6283 3.000% 11/20/49		4,377,315		3,839,617
Pool #MA6409 3.000% 1/20/50		4,551,192		3,992,134
Pool #MA4321 3.500% 3/20/47		2,710,881		2,463,240
Government National Mortgage Association II, TBA
2.500% 7/20/54 (g)		3,900,000		3,279,859
3.000% 7/20/54 (g)		4,100,000		3,575,145
3.500% 7/20/54 (g)		5,280,000		4,745,572
4.500% 7/20/54 (g)		2,000,000		1,901,142
Uniform Mortgage-Backed Security, TBA
2.500% 7/01/54 (g)		25,575,000		20,887,583
3.000% 7/01/54 (g)		11,225,000		9,551,779
3.500% 7/01/54 (g)		2,150,000		1,902,917
4.000% 7/01/54 (g)		1,075,000		983,457
4.500% 7/01/54 (g)		3,625,000		3,416,987
5.000% 7/01/54 (g)		5,275,000		5,097,997
5.500% 7/01/54 (g)		14,400,000		14,202,562
6.000% 7/01/54 (g)		6,300,000		6,317,723
				187,442,335
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $200,706,868)				187,482,229

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
U.S. TREASURY OBLIGATIONS — 4.6%
U.S. Treasury Bonds & Notes — 4.6%
U.S. Treasury Bonds
2.250% 8/15/49 (j)	$	21,950,000	$	14,183,442
U.S. Treasury Notes
4.625% 10/15/26		15,000,000		14,985,582
				29,169,024
TOTAL U.S. TREASURY OBLIGATIONS (Cost $29,756,502)				29,169,024
TOTAL BONDS & NOTES (Cost $683,424,337)				630,788,448
TOTAL LONG-TERM INVESTMENTS (Cost $683,424,337)				630,788,448
SHORT-TERM INVESTMENTS — 14.3%
Commercial Paper — 12.7%
American Honda Finance Corp.
5.719% 9/05/24		4,000,000		3,957,151
Bayer Corp.
6.361% 8/15/24 (a)		9,000,000		8,932,056
6.396% 7/26/24 (a)		7,200,000		7,168,409
CRH America Finance, Inc.
5.733% 10/15/24 (a)		7,000,000		6,881,445
5.741% 10/08/24 (a)		4,000,000		3,936,579
Eversource Energy
5.696% 7/03/24 (a)		5,000,000		4,996,233
5.737% 7/15/24 (a)		2,000,000		1,994,863
L3Harris Technologies, Inc.
5.722% 8/21/24 (a)		5,000,000		4,958,405
Magna International, Inc.
5.698% 7/03/24 (a)		7,000,000		6,994,724
MUFG Bank Ltd.
5.328% 7/05/24		15,000,000		14,984,556
Nutrien Ltd.
5.726% 7/24/24 (a)		8,000,000		7,967,918
TELUS Corp.
5.699% 9/24/24 (a)		8,000,000		7,890,515
				80,662,854
	Number of Shares
Investment of Cash Collateral from Securities Loaned — 1.3%
State Street Navigator Securities Lending Government Money Market Portfolio (k)		7,915,575		7,915,575
	Principal Amount
Repurchase Agreement — 0.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (l)	$	2,097,221		2,097,221

MassMutual Core Bond Fund —  Portfolio of Investments (Continued)

	Value
TOTAL SHORT-TERM INVESTMENTS (Cost $90,686,192)	$	90,675,650
TOTAL INVESTMENTS — 113.6% (Cost $774,110,529) (m)		721,464,098
Other Assets/(Liabilities) — (13.6)%		(86,552,162)
NET ASSETS — 100.0%	$	634,911,936

Abbreviation Legend

CLO Collateralized Loan Obligation

CMT Constant Maturity Treasury Index

FRN Floating Rate Note

ICE Inter-Continental Exchange

LIBOR London InterBank Offered Rate

REMICS Real Estate Mortgage Investment Conduits

SOFR Secured Overnight Financing Rate

STEP Step Coupon 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, 2024, the aggregate market value of these securities amounted to $315,439,984 or 49.68% of net assets.

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

(c) Security is currently in default due to bankruptcy or failure to make payment of principal or interest of the issuer. Income is not being accrued. At June 30, 2024, these securities amounted to a value of $1,505 or 0.00% of net assets.

(d) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2024, was $7,749,513 or 1.22% of net assets. (Note 2).

(e) Restricted security. Certain securities are restricted to resale. At June 30, 2024, these securities amounted to a value of $3,217,518 or 0.51% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(f) 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, 2024.

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

(h) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2024, these securities amounted to a value of $1,207,359 or 0.19% of net assets.

(i) 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.

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

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

(l) Maturity value of $2,097,501. Collateralized by U.S. Government Agency obligations with a rate of 5.385%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $2,139,221.

(m) 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	9/19/24		274	$	32,039,648	$	377,977
U.S. Treasury Ultra Bond	9/19/24		80		9,940,133		87,367
U.S. Treasury Note 2 Year	9/30/24		211		42,983,446		106,710
U.S. Treasury Note 5 Year	9/30/24		286		30,269,954		211,390
						$	783,444
Short
U.S. Treasury Ultra 10 Year	9/19/24		43	$	(4,833,422)	$	(48,422)

MassMutual Diversified Bond Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 94.0%
CORPORATE DEBT — 43.1%
Aerospace & Defense — 0.7%
Boeing Co.
5.930% 5/01/60	$	140,000	$	125,167
6.858% 5/01/54 (a)		142,000		145,716
Embraer Netherlands Finance BV
7.000% 7/28/30 (a)		300,000		313,057
TransDigm, Inc.
5.500% 11/15/27		250,000		245,485
				829,425
Agriculture — 0.4%
Imperial Brands Finance PLC
5.500% 2/01/30 (a) (h)		218,000		215,966
Reynolds American, Inc.
5.850% 8/15/45		120,000		110,680
Viterra Finance BV
3.200% 4/21/31 (a)		280,000		241,841
				568,487
Airlines — 0.3%
Alaska Airlines Pass-Through Trust, Series 2020-1, Class A,
4.800% 2/15/29 (a)		327,264		320,910
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27		48,973		47,896
				368,806
Auto Manufacturers — 0.2%
General Motors Co.
5.200% 4/01/45		225,000		197,470
Banks — 6.9%
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		310,000		247,091
5 yr. CMT + 2.000% 3.846% VRN 3/08/37		460,000		403,129
Bank of Montreal 5 yr. CMT + 2.979%
4.800% VRN (b)		285,000		281,601
Barclays PLC
5 yr. CMT + 3.410% 4.375% VRN (b)		375,000		314,889
5 yr. CMT + 5.431% 8.000% VRN (b)		290,000		294,449
BNP Paribas SA 5 yr. CMT + 3.340%
4.625% VRN (a) (b)		375,000		300,290
BPCE SA 1 day USD SOFR + 1.730%
3.116% VRN 10/19/32 (a)		450,000		366,167
Citigroup, Inc. 1 day USD SOFR + 3.813%
5.000% VRN (b)		242,000		240,433

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Citizens Financial Group, Inc. 1 day USD SOFR + 2.325%
6.645% VRN 4/25/35	$	346,000	$	357,642
Discover Bank 5 yr. USD SOFR ICE Swap Rate + 1.730%
5.974% VRN 8/09/28		468,000		467,410
HSBC Holdings PLC
6.500% 9/15/37		125,000		128,017
7.350% 11/27/32		415,000		436,971
Huntington Bancshares, Inc. 3 mo. USD Term SOFR + 3.142%
8.470% VRN (b)		510,000		500,967
ING Groep NV 5 yr. USD Swap + 4.446%
6.500% VRN (b)		675,000		667,592
JP Morgan Chase & Co. 3 mo. USD Term SOFR + 2.515%
2.956% VRN 5/13/31		235,000		205,958
KeyCorp 1 day USD SOFR Index + 2.420%
6.401% VRN 3/06/35		275,000		278,805
Lloyds Banking Group PLC 5 yr. CMT + 3.913%
8.000% VRN (b) (c)		605,000		618,433
Macquarie Bank Ltd. 5 yr. CMT + 1.700%
3.052% VRN 3/03/36 (a)		650,000		539,588
Morgan Stanley
1 day USD SOFR + 1.360% 2.484% VRN 9/16/36		280,000		221,514
1 day USD SOFR + 2.620% 5.297% VRN 4/20/37		185,000		177,140
Nordea Bank Abp 5 yr. CMT + 4.110%
6.625% VRN (a) (b) (c)		275,000		272,912
Societe Generale SA
1 yr. CMT + 1.300% 2.797% VRN 1/19/28 (a)		300,000		276,833
5 yr. USD ICE Swap + 5.873% 8.000% VRN (a) (b)		525,000		524,394
SVB Financial Group
4.100% (b) (d)		210,000		1,050
5 yr. CMT + 3.074% 4.250% (b) (d)		590,000		2,950
Swedbank AB 5 yr. CMT + 4.134%
5.625% VRN (a) (b)		200,000		199,000
Toronto-Dominion Bank 5 yr. CMT + 4.075%
8.125% VRN 10/31/82		358,000		371,018
				8,696,243
Beverages — 0.4%
Bacardi Ltd.
5.150% 5/15/38 (a)		200,000		184,234
Molson Coors Beverage Co.
4.200% 7/15/46		366,000		292,499
				476,733
Biotechnology — 0.2%
Amgen, Inc.
5.600% 3/02/43		171,000		168,525
5.750% 3/02/63		150,000		146,885
				315,410
Building Materials — 0.3%
Standard Industries, Inc.
4.375% 7/15/30 (a)		200,000		180,704
4.750% 1/15/28 (a)		151,000		143,675
				324,379

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Chemicals — 0.3%
Dow Chemical Co.
5.600% 2/15/54	$	147,000	$	141,320
LYB International Finance III LLC
4.200% 5/01/50		265,000		201,705
				343,025
Computers — 0.4%
Dell International LLC/EMC Corp.
8.350% 7/15/46		96,000		121,400
Genpact Luxembourg SARL/Genpact USA, Inc.
6.000% 6/04/29		103,000		104,182
Kyndryl Holdings, Inc.
6.350% 2/20/34		116,000		117,854
Leidos, Inc.
5.500% 7/01/33		226,000		221,061
				564,497
Distribution & Wholesale — 0.4%
H&E Equipment Services, Inc.
3.875% 12/15/28 (a)		600,000		541,361
Diversified Financial Services — 3.2%
American Express Co. 1 day USD SOFR + 1.630%
5.915% VRN 4/25/35		201,000		204,210
Apollo Global Management, Inc.
5.800% 5/21/54		236,000		232,258
ARES Finance Co. III LLC 5 yr. CMT + 3.237%
4.125% VRN 6/30/51 (a)		295,000		274,083
ARES Finance Co. LLC
4.000% 10/08/24 (a)		375,000		371,670
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		375,000		337,280
3.250% 2/15/27 (a)		175,000		163,777
BGC Group, Inc.
4.375% 12/15/25		475,000		462,260
6.600% 6/10/29 (a)		300,000		298,524
Blue Owl Finance LLC
3.125% 6/10/31 (a)		475,000		395,718
4.125% 10/07/51 (a)		198,000		141,379
Charles Schwab Corp. 5 yr. CMT + 3.168%
4.000% VRN (b)		425,000		398,759
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		577,272		555,721
OneMain Finance Corp.
4.000% 9/15/30		220,000		188,813
				4,024,452
Electric — 1.9%
Berkshire Hathaway Energy Co.
5.950% 5/15/37		120,000		124,209
Cleveland Electric Illuminating Co.
5.950% 12/15/36		145,000		146,899
CMS Energy Corp.
4.700% 3/31/43		115,000		99,140

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Dominion Energy South Carolina, Inc.
6.250% 10/15/53	$	57,000	$	61,367
Duke Energy Florida LLC
6.200% 11/15/53		133,000		140,888
Elwood Energy LLC
8.159% 7/05/26		39,753		36,573
Indianapolis Power & Light Co.
5.700% 4/01/54 (a)		72,000		70,453
Massachusetts Electric Co.
5.867% 2/26/54 (a)		355,000		351,655
MidAmerican Energy Co.
5.300% 2/01/55		104,000		98,980
NextEra Energy Capital Holdings, Inc. 5 yr. CMT + 2.547%
3.800% VRN 3/15/82		475,000		437,860
Pacific Gas & Electric Co.
4.300% 3/15/45		160,000		122,989
Sempra 5 yr. CMT + 2.789%
6.875% VRN 10/01/54		332,000		329,957
Tampa Electric Co.
4.450% 6/15/49		94,000		78,722
Virginia Electric & Power Co.
5.350% 1/15/54		197,000		185,870
6.000% 1/15/36		100,000		103,154
				2,388,716
Entertainment — 0.2%
Live Nation Entertainment, Inc.
5.625% 3/15/26 (a)		77,000		75,923
Warnermedia Holdings, Inc.
4.279% 3/15/32		275,000		240,028
				315,951
Food — 1.0%
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
6.750% 3/15/34 (a)		242,000		256,546
7.250% 11/15/53 (a)		260,000		283,676
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		375,000		300,013
3.000% 10/15/30 (a)		81,000		68,772
4.250% 2/01/27 (a)		340,000		327,300
				1,236,307
Gas — 0.2%
NiSource, Inc.
4.800% 2/15/44		240,000		208,608
Hand & Machine Tools — 0.3%
Stanley Black & Decker, Inc. 5 yr. CMT + 2.657%
4.000% VRN 3/15/60		375,000		340,359
Health Care - Services — 0.1%
Humana, Inc.
5.750% 4/15/54		163,000		157,070
Home Builders — 0.0%
Mattamy Group Corp.
4.625% 3/01/30 (a) (c)		35,000		32,353

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Insurance — 8.0%
Allianz SE 5 yr. CMT + 2.973%
3.500% VRN (a) (b)	$	1,176,000	$	1,095,318
Allstate Corp., (Acquired 7/02/19, Cost $687,600), 3 mo. USD Term SOFR + 3.200%
8.522% VRN 8/15/53 (e)		640,000		639,507
Arthur J Gallagher & Co.
5.750% 7/15/54		115,000		111,672
Ascot Group Ltd.
4.250% 12/15/30 (a)		450,000		374,046
Athene Holding Ltd.
6.250% 4/01/54		355,000		355,229
AXIS Specialty Finance LLC 5 yr. CMT + 3.186%
4.900% VRN 1/15/40		400,000		366,241
Brighthouse Financial, Inc.
3.850% 12/22/51		575,000		365,603
CNO Financial Group, Inc.
6.450% 6/15/34		158,000		157,849
Corebridge Financial, Inc. 5 yr. CMT + 3.846%
6.875% VRN 12/15/52		600,000		605,430
Enstar Finance LLC 5 yr. CMT + 5.468%
5.750% VRN 9/01/40		910,000		890,961
Equitable Holdings, Inc. 5 yr. CMT + 4.736%
4.950% VRN (b)		410,000		403,616
Fairfax Financial Holdings Ltd.
6.100% 3/15/55 (a)		295,000		284,953
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		310,000		256,394
5 yr. CMT + 3.796% 4.700% VRN 10/15/51 (a)		955,000		886,897
6.750% 3/15/54 (a)		81,000		80,086
Hanwha Life Insurance Co. Ltd. 5 yr. CMT + 1.850%
3.379% VRN 2/04/32 (a)		320,000		299,605
Hill City Funding Trust
4.046% 8/15/41 (a)		390,000		285,251
Liberty Mutual Group, Inc. 5 yr. CMT + 3.315%
4.125% VRN 12/15/51 (a)		255,000		238,807
Lincoln National Corp., (Acquired 11/15/22, Cost $169,000), 5 yr. CMT + 5.318%
9.250% VRN (b) (e)		169,000		182,180
Markel Group, Inc.
6.000% 5/16/54		259,000		256,336
MetLife Capital Trust IV
7.875% 12/15/67 (a)		225,000		240,998
Pine Street Trust III
6.223% 5/15/54 (a)		310,000		309,703
Prudential Financial, Inc. 5 yr. CMT + 3.162%
5.125% VRN 3/01/52		275,000		255,644
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		320,000		265,593
4.750% 4/08/32 (a)		790,000		702,646
6.875% 4/15/34 (a)		31,000		31,782
USF&G Capital I
8.500% 12/15/45 (a)		95,000		95,209
				10,037,556
Investment Companies — 4.3%
Antares Holdings LP

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
2.750% 1/15/27 (a)	$	345,000	$	313,426
3.750% 7/15/27 (a)		605,000		553,659
8.500% 5/18/25 (a)		330,000		333,758
ARES Capital Corp.
5.875% 3/01/29		207,000		204,019
Ares Strategic Income Fund
6.350% 8/15/29 (a)		560,000		555,399
Blackstone Private Credit Fund
2.625% 12/15/26		155,000		141,756
Blackstone Secured Lending Fund
2.750% 9/16/26		375,000		347,154
Blue Owl Capital Corp. II
8.450% 11/15/26 (a)		375,000		386,904
Blue Owl Credit Income Corp.
4.700% 2/08/27		410,000		390,148
Blue Owl Technology Finance Corp. II
6.750% 4/04/29 (a)		257,000		251,423
Golub Capital BDC, Inc.
2.500% 8/24/26		160,000		147,175
6.000% 7/15/29		593,000		581,747
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
6.250% 5/15/26		1,000,000		992,104
Sixth Street Specialty Lending, Inc.
6.125% 3/01/29 (c)		179,000		176,683
				5,375,355
Leisure Time — 0.4%
Royal Caribbean Cruises Ltd.
5.500% 8/31/26 (a)		485,000		479,606
Media — 1.5%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.000% 2/01/28 (a)		250,000		233,723
Charter Communications Operating LLC/Charter Communications Operating Capital
2.300% 2/01/32 (c)		440,000		339,334
6.484% 10/23/45		175,000		159,842
CSC Holdings LLC
4.625% 12/01/30 (a)		250,000		91,050
5.000% 11/15/31 (a)		325,000		117,816
5.750% 1/15/30 (a)		200,000		75,489
DISH DBS Corp.
7.375% 7/01/28		223,000		94,837
Paramount Global
3.700% 6/01/28		300,000		270,517
5 yr. CMT + 3.999% 6.375% VRN 3/30/62		304,000		268,480
Time Warner Cable LLC
4.500% 9/15/42		180,000		131,742
6.750% 6/15/39		115,000		111,247
				1,894,077
Mining — 0.6%
Anglo American Capital PLC
6.000% 4/05/54 (a)		330,000		326,392
Novelis Corp.
3.875% 8/15/31 (a)		533,000		461,462
				787,854

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Oil & Gas — 1.7%
Antero Resources Corp.
7.625% 2/01/29 (a)	$	74,000	$	76,097
BP Capital Markets PLC 5 yr. CMT + 2.153%
6.450% VRN (b)		134,000		137,649
EQT Corp.
7.000% STEP 2/01/30 (c)		265,000		281,225
Ovintiv, Inc.
6.500% 8/15/34		75,000		78,445
6.500% 2/01/38		160,000		164,519
7.100% 7/15/53		420,000		460,681
Patterson-UTI Energy, Inc.
5.150% 11/15/29 (c)		615,000		597,718
Petroleos Mexicanos
5.350% 2/12/28		190,000		170,753
6.375% 1/23/45		35,000		22,691
6.500% 3/13/27		65,000		61,936
Santos Finance Ltd.
3.649% 4/29/31 (a)		165,000		144,168
				2,195,882
Oil & Gas Services — 0.5%
Nov, Inc.
3.950% 12/01/42		254,000		191,949
Weatherford International Ltd.
8.625% 4/30/30 (a)		483,000		500,502
				692,451
Pharmaceuticals — 0.9%
1375209 BC Ltd.
9.000% 1/30/28 (a) (c)		158,000		151,929
Bausch Health Cos., Inc.
11.000% 9/30/28 (a)		282,000		250,980
CVS Health Corp.
5.050% 3/25/48		115,000		99,085
5.875% 6/01/53		100,000		95,826
CVS Pass-Through Trust
5.926% 1/10/34 (a)		148,510		147,178
7.507% 1/10/32 (a)		10,387		10,806
Utah Acquisition Sub, Inc.
5.250% 6/15/46		405,000		333,150
				1,088,954
Pipelines — 1.3%
Enbridge, Inc., Series NC5, 5 yr. CMT + 3.785%
8.250% VRN 1/15/84		250,000		260,478
Energy Transfer LP
5.950% 5/15/54		138,000		134,380
5 yr. CMT + 5.134% 6.750% VRN (b)		270,000		268,635
EnLink Midstream Partners LP 3 mo. USD Term SOFR + 4.372%
9.711% VRN (b)		375,000		371,809
Enterprise Products Operating LLC 3 mo. USD Term SOFR + 3.295%
5.250% VRN 8/16/77		250,000		239,079

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Plains All American Pipeline LP 3 mo. USD Term SOFR + 4.372%
9.694% VRN (b)	$	325,000	$	323,573
				1,597,954
Private Equity — 0.6%
Apollo Management Holdings LP 5 yr. CMT + 3.266%
4.950% VRN 1/14/50 (a)		325,000		317,506
Brookfield Finance, Inc.
5.968% 3/04/54		279,000		275,926
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		160,000		110,569
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		153,000		100,327
				804,328
Real Estate Investment Trusts (REITS) — 3.7%
American Homes 4 Rent LP
5.500% 7/15/34		300,000		294,762
Broadstone Net Lease LLC
2.600% 9/15/31		605,000		480,785
EPR Properties
3.600% 11/15/31		185,000		154,231
4.500% 6/01/27		355,000		339,580
Equinix Europe 2 Financing Corp. LLC
5.500% 6/15/34		225,000		224,634
Omega Healthcare Investors, Inc.
3.625% 10/01/29		305,000		272,292
Piedmont Operating Partnership LP
2.750% 4/01/32		235,000		172,355
9.250% 7/20/28		133,000		141,893
Rexford Industrial Realty LP
2.125% 12/01/30		201,000		164,444
Service Properties Trust
4.950% 10/01/29		590,000		447,626
Store Capital LLC
4.500% 3/15/28		225,000		214,142
4.625% 3/15/29		525,000		495,833
Ventas Realty LP
5.700% 9/30/43		85,000		81,162
WEA Finance LLC
2.875% 1/15/27 (a)		385,000		357,643
3.500% 6/15/29 (a)		375,000		336,380
WEA Finance LLC/Westfield UK & Europe Finance PLC
3.750% 9/17/24 (a)		425,000		421,831
				4,599,593
Retail — 0.5%
Nordstrom, Inc.
4.250% 8/01/31		440,000		391,242
Sonic Automotive, Inc.
4.875% 11/15/31 (a) (c)		277,000		243,894
				635,136
Software — 0.1%
Oracle Corp.
6.900% 11/09/52		119,000		133,197

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Telecommunications — 0.8%
AT&T, Inc.
3.550% 9/15/55	$	664,000	$	447,662
Cisco Systems, Inc.
5.300% 2/26/54		49,000		47,991
Hughes Satellite Systems Corp.
6.625% 8/01/26		444,000		206,452
Sprint Capital Corp.
8.750% 3/15/32		141,000		169,597
T-Mobile USA, Inc.
6.000% 6/15/54		190,000		196,453
				1,068,155
Venture Capital — 0.8%
Hercules Capital, Inc.
2.625% 9/16/26		738,000		676,505
3.375% 1/20/27		340,000		314,843
				991,348
TOTAL CORPORATE DEBT (Cost $59,051,597)				54,311,098
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 27.4%
Commercial Mortgage-Backed Securities — 10.4%
Aventura Mall Trust, Series 2018-AVM, Class D,
4.249% VRN 7/05/40 (a) (f)		530,000		475,448
BAMLL Commercial Mortgage Securities Trust, Series 2019-BPR, Class CMP,
4.024% VRN 11/05/32 (a) (f)		440,000		398,170
Bank
Series 2020-BN30, Class MCDF, 3.016% VRN 12/15/53 (f)		500,000		264,910
Series 2019-BN17, Class C, 4.660% VRN 4/15/52 (f)		331,000		276,126
Benchmark Mortgage Trust
Series 2021-B25, Class 300C, 3.094% VRN 4/15/54 (a) (f)		500,000		300,000
Series 2020-IG1, Class D, 3.347% VRN 9/15/43 (f)		400,000		114,288
BGME Trust, Series 2021-VR, Class D,
3.094% VRN 1/10/43 (a) (f)		3,100,000		2,328,706
BMO Mortgage Trust, Series 2023-C4, Class A5,
5.117% VRN 2/15/56 (f)		300,000		295,812
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD Term SOFR + 2.447%
7.776% FRN 12/15/37 (a)		572,453		571,379
Citigroup Commercial Mortgage Trust, Series 2019-GC41, Class C
3.502% 8/10/56		222,000		180,309
COMM Mortgage Trust, Series 2015-CR23, Class C,
4.413% VRN 5/10/48 (f)		110,000		103,338
DataBank Issuer LLC, Series 2021-1A, Class B
2.650% 2/27/51 (a)		300,000		273,755
DC Office Trust
Series 2019-MTC, Class D, 3.174% VRN 9/15/45 (a) (f)		357,000		224,876
Series 2019-MTC, Class E, 3.174% VRN 9/15/45 (a) (f)		622,000		344,354
DROP Mortgage Trust, Series 2021-FILE, Class D, 1 mo. USD Term SOFR + 2.864%
8.194% FRN 10/15/43 (a)		998,000		795,761
GS Mortgage Securities Trust, Series 2018-GS10, Class D
3.000% 7/10/51 (a)		599,000		402,232

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Hudson Yards Mortgage Trust, Series 2019-30HY, Class E,
3.558% VRN 7/10/39 (a) (f)	$	630,000	$	511,026
Jackson Park Trust, Series 2019-LIC, Class D,
3.351% VRN 10/14/39 (a) (f)		686,000		538,604
JPMBB Commercial Mortgage Securities Trust, Series 2014-C21, Class C,
4.818% VRN 8/15/47 (f)		300,000		285,995
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
7.194% FRN 3/15/38 (a)		424,643		408,187
Med Trust, Series 2021-MDLN, Class F, 1 mo. USD Term SOFR + 4.114%
9.444% FRN 11/15/38 (a)		1,990,447		1,989,203
MFT Mortgage Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		205,000		138,313
Series 2020-ABC, Class B, 3.593% VRN 2/10/42 (a) (f)		215,000		138,792
Store Master Funding I-VII & XIV, Series 2019-1, Class A4
4.490% 11/20/49 (a)		752,354		610,066
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD Term SOFR + 2.214%
7.544% FRN 7/15/39 (a)		864,000		588,396
Wells Fargo Commercial Mortgage Trust
Series 2015-NXS1, Class C, 3.848% VRN 5/15/48 (f)		140,000		130,998
Series 2021-FCMT, Class C, 1 mo. USD Term SOFR + 2.514% 7.844% FRN 5/15/31 (a)		461,000		441,253
				13,130,297
Home Equity Asset-Backed Securities — 0.1%
Argent Securities, Inc. Asset-Backed Pass-Through Certificates, Series 2004-W10, Class M1, 1 mo. USD Term SOFR + 1.014%
4.358% FRN 10/25/34		70,974		65,962
Other Asset-Backed Securities — 12.1%
AIMCO CLO, Series 2018-AA, Class B, 3 mo. USD Term SOFR + 1.662%
6.979% FRN 4/17/31 (a)		250,000		250,254
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. USD Term SOFR + 2.550%
7.875% FRN 4/26/35 (a)		500,000		503,422
Apidos CLO XLVIII Ltd., Series 2024-48A, Class A1, 3 mo. USD Term SOFR + 1.440%
6.755% FRN 7/25/37 (a)		500,000		500,254
Atrium XV, Series 15A, Class B, 3 mo. USD Term SOFR + 2.012%
7.338% FRN 1/23/31 (a)		250,000		250,000
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. USD Term SOFR + 1.320%
6.647% FRN 4/18/35 (a)		500,000		500,221
Blackbird Capital Aircraft Lease Securitization Ltd., Series 2016-1A, Class A,
4.213% STEP 12/16/41 (a)		202,147		200,159
Business Jet Securities LLC, Series 2021-1A, Class C
5.067% 4/15/36 (a)		521,989		508,328
Canyon CLO Ltd., Series 2020-2A, Class BR, 3 mo. USD Term SOFR + 1.962%
7.290% FRN 10/15/34 (a)		500,000		500,574
CIFC Funding Ltd., Series 2019-6A, Class A1R, 3 mo. USD Term SOFR + 1.450%
6.778% FRN 7/16/37 (a)		500,000		502,000
Diameter Capital CLO 2 Ltd., Series 2021-2A, Class A1, 3 mo. USD Term SOFR + 1.482%
6.810% FRN 10/15/36 (a)		500,000		500,890
Goodgreen Trust
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		124,259		111,273

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2017-1A, Class A, 3.740% 10/15/52 (a)	$	68,442	$	61,776
Series 2019-2A, Class B, 3.860% 4/15/55 (a)		83,908		70,016
Series 2021-1A, Class C, 5.740% 10/15/56 (a)		379,046		305,344
Harbor Park CLO 18-1 Ltd., Series 2018-1A, Class B1R, 3 mo. USD Term SOFR + 1.700%
7.030% FRN 1/20/31 (a)		500,000		500,500
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		43,379		38,817
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		60,419		52,053
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		23,113		20,161
Series 2016-4A, Class A2, 4.290% 9/20/47 (a)		44,984		41,541
Horizon Aircraft Finance I Ltd., Series 2018-1, Class B
5.270% 12/15/38 (a)		225,200		137,748
Horizon Aircraft Finance II Ltd., Series 2019-1, Class B
4.703% 7/15/39 (a)		273,167		177,246
JG Wentworth XLIII LLC, Series 2019-1A, Class B
4.510% 8/15/73 (a)		126,669		109,682
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		249,726		228,569
MACH 1 Cayman Ltd., Series 2019-1, Class B
4.335% 10/15/39 (a)		319,562		252,461
Madison Park Funding XXVIII Ltd., Series 2018-28A, Class B, 3 mo. USD Term SOFR + 1.862%
7.190% FRN 7/15/30 (a)		950,000		951,508
Madison Park Funding XXXII Ltd., Series 2018-32A, Class CR, 3 mo. USD Term SOFR + 2.262%
7.586% FRN 1/22/31 (a)		300,000		300,199
Marble Point CLO XIX Ltd., Series 2020-3A, Class AR, 3 mo. USD Term SOFR + 1.400%
6.988% FRN 1/19/34 (a)		500,000		500,798
Mariner Finance Issuance Trust, Series 2021-AA, Class D
3.830% 3/20/36 (a)		381,000		333,787
MCA Fund Holding LLC, Series 2020-1, Class A
3.250% 11/15/35 (a)		327,521		312,311
MidOcean Credit CLO XII Ltd., Series 2023-12A, Class CR, 3 mo. USD Term SOFR + 2.450%
7.777% FRN 4/18/36 (a)		250,000		250,520
MidOcean Credit CLO XIV Ltd., Series 2024-14A, Class A1, 3 mo. USD Term SOFR + 1.580%
6.874% FRN 4/15/37 (a)		500,000		500,744
Mosaic Solar Loans LLC, Series 2017-1A, Class A
4.450% 6/20/42 (a)		19,355		18,534
Neuberger Berman CLO XX Ltd., Series 2015-20A, Class BRR, 3 mo. USD Term SOFR + 1.912%
7.240% FRN 7/15/34 (a)		500,000		500,976
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD Term SOFR + 2.112%
7.436% FRN 10/20/34 (a)		250,000		250,197
Pioneer Aircraft Finance Ltd., Series 2019-1, Class B
4.948% 6/15/44 (a)		341,661		261,370
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD Term SOFR + 1.432%
6.761% FRN 10/30/34 (a)		500,000		500,428
Rad CLO 4 Ltd., Series 2019-4A, Class B1R, 3 mo. USD Term SOFR + 1.750%
7.074% FRN 4/25/32 (a)		250,000		250,489
Renew Financial, Series 2021-1, Class M
3.210% 11/20/56 (a)		151,290		118,760

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Rockford Tower CLO Ltd., Series 2018-1A, Class B, 3 mo. USD Term SOFR + 1.982%
7.307% FRN 5/20/31 (a)	$	250,000	$	250,733
RRX 6 Ltd., Series 2021-6A, Class A2, 3 mo. USD Term SOFR + 2.012%
7.340% FRN 1/15/37 (a)		250,000		250,219
Sierra Timeshare Receivables Funding LLC, Series 2020-2A, Class C
3.510% 7/20/37 (a)		23,611		22,963
Slam Ltd., Series 2021-1A, Class B
3.422% 6/15/46 (a)		238,063		211,066
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		99,389		85,887
Symphony CLO 39 Ltd., Series 2023-39A, Class B, 3 mo. USD Term SOFR + 2.300%
7.624% FRN 4/25/34 (a)		500,000		501,089
Symphony CLO 42 Ltd., Series 2024-42A, Class A1, 3 mo. USD Term SOFR + 1.530%
6.837% FRN 4/17/37 (a)		500,000		502,131
THL Credit Wind River CLO Ltd., Series 2018-3A, Class B, 3 mo. USD Term SOFR + 1.962%
7.286% FRN 1/20/31 (a)		490,000		491,081
Thrust Engine Leasing DAC
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,029,867		943,924
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		192,612		170,103
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD Term SOFR + 1.912%
7.236% FRN 10/20/32 (a)		250,000		250,434
Willis Engine Structured Trust III, Series 2017-A, Class A,
4.690% STEP 8/15/42 (a)		257,829		233,486
				15,287,026
Student Loans Asset-Backed Securities — 2.3%
College Avenue Student Loans LLC
Series 2021-A, Class D, 4.120% 7/25/51 (a)		164,560		149,254
Series 2019-A, Class C, 4.460% 12/28/48 (a)		122,580		115,116
Series 2019-A, Class D, 5.500% 12/28/48 (a)		86,136		78,152
Commonbond Student Loan Trust, Series 2017-AGS, Class C
5.280% 5/25/41 (a)		33,079		29,138
EDvestinU Private Education Loan Issue No. 3 LLC, Series 2021-A, Class B
3.500% 11/25/50 (a)		600,000		478,221
Goal Capital Funding Trust, Series 2006-1, Class B, 3 mo. USD LIBOR + 0.450%
6.048% FRN 8/25/42		294,954		266,735
Navient Student Loan Trust
Series 2018-EA, Class B, 4.440% 12/15/59 (a)		140,000		133,578
Series 2018-1A, Class B, 30 day USD SOFR Average + 1.314% 6.650% FRN 3/25/67 (a)		250,000		232,232
Nelnet Student Loan Trust
Series 2005-4, Class A4R2, 1.191% FRN 3/22/32 (f)		70,000		69,543
Series 2006-3, Class B, 90 day USD SOFR Average + 0.512% 5.865% FRN 6/25/41		53,752		48,385
Series 2012-2A, Class B, 30 day USD SOFR Average + 1.114% 6.450% FRN 11/25/36 (a)		200,000		197,504
Series 2012-1A, Class B, 30 day USD SOFR Average + 1.114% 6.450% FRN 6/25/42 (a)		150,000		144,707
Series 2012-4A, Class B, 30 day USD SOFR Average + 1.114% 6.450% FRN 7/26/49 (a)		250,000		228,929
Series 2014-2A, Class B, 30 day USD SOFR Average + 1.614% 6.950% FRN 6/25/41 (a)		100,000		96,832

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SLM Student Loan Trust
Series 2006-4, Class B, 90 day USD SOFR Average + 0.462% 5.810% FRN 1/25/70	$	91,417	$	85,358
Series 2006-5, Class B, 90 day USD SOFR Average + 0.472% 5.820% FRN 10/25/40		105,678		99,168
Series 2005-6, Class B, 90 day USD SOFR Average + 0.552% 5.900% FRN 1/25/44		171,540		163,525
Series 2004-3, Class B, 90 day USD SOFR Average + 0.732% 6.080% FRN 10/25/64		59,359		56,090
SMB Private Education Loan Trust, Series 2019-A, Class B
4.000% 11/17/42 (a)		185,000		169,838
South Carolina Student Loan Corp., Series 2015-A, Class A, 1 mo. USD Term SOFR + 1.614%
6.960% FRN 1/25/36		22,391		22,365
				2,864,670
Whole Loan Collateral Collateralized Mortgage Obligations — 2.5%
Angel Oak Mortgage Trust I LLC
Series 2019-4, Class M1, 3.459% VRN 7/26/49 (a) (f)		268,354		261,533
Series 2019-2, Class M1, 4.065% VRN 3/25/49 (a) (f)		55,507		54,975
Banc of America Mortgage Trust, Series 2004-G, Class 2A7,
5.457% VRN 8/25/34 (f)		2,616		2,585
New Residential Mortgage Loan Trust, Series 2021-NQM3, Class B1,
3.398% VRN 11/27/56 (a) (f)		3,600,000		2,761,683
				3,080,776
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $39,250,052)				34,428,731
SOVEREIGN DEBT OBLIGATION — 0.1%
Mexico Government International Bond
4.750% 3/08/44		174,000		139,371
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $193,919)				139,371
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (g) — 21.4%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. REMICS Series 2178, Class PB 7.000% 8/15/29		2,112		2,168
Pass-Through Securities — 21.4%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		437,284		347,736
Pool #RA4255 2.000% 1/01/51		887,929		706,929
Pool #SD0905 3.000% 3/01/52		662,792		568,033
Pool #SD1523 4.000% 8/01/52		996,733		919,415
Pool #SD1603 4.000% 9/01/52		645,839		591,098
Pool #SD8266 4.500% 11/01/52		1,368,734		1,291,627
Federal National Mortgage Association
Pool #FM8596 2.500% 9/01/51		427,495		354,105
Pool #FS3035 2.500% 4/01/52		1,414,034		1,175,478
Pool #MA3029 3.000% 6/01/32		187,357		178,127
Pool #MA3090 3.000% 8/01/32		76,823		72,964
Pool #AR3007 3.000% 2/01/43		77,778		69,418
Pool #FS1075 3.000% 3/01/52		678,707		586,190

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #CB3304 3.000% 4/01/52	$	1,047,663	$	904,852
Pool #CB3305 3.000% 4/01/52		1,266,815		1,091,754
Pool #AS1304 3.500% 12/01/28		41,690		40,328
Pool #MA1356 3.500% 2/01/43		407,492		373,788
Pool #CA6096 3.500% 6/01/50		872,334		773,998
Pool #FM4017 3.500% 8/01/50		56,372		50,387
Pool #CB3842 3.500% 6/01/52		2,062,878		1,839,199
Pool #CA1909 4.500% 6/01/48		322,241		308,015
Pool #CB3866 4.500% 6/01/52		778,536		739,300
Pool #CB4129 4.500% 7/01/52		993,472		938,748
Pool #AD6437 5.000% 6/01/40		22,158		22,156
Pool #AD6996 5.000% 7/01/40		147,018		147,059
Pool #AL8173 5.000% 2/01/44		53,529		53,494
Government National Mortgage Association
Pool #579140 6.500% 1/15/32		283		288
Pool #587280 6.500% 9/15/32		427		434
Pool #550659 6.500% 9/15/35		42,280		43,446
Pool #538689 6.500% 12/15/35		4,583		4,709
Pool #780651 7.000% 10/15/27		161		162
Pool #462384 7.000% 11/15/27		117		118
Pool #482668 7.000% 8/15/28		288		291
Pool #581417 7.000% 7/15/32		387		392
Pool #423836 8.000% 8/15/26		71		72
Government National Mortgage Association II
Pool #MA6038 3.000% 7/20/49		405,457		356,158
Pool #MA6283 3.000% 11/20/49		733,043		642,998
Pool #MA6409 3.000% 1/20/50		765,095		671,113
Pool #MA4321 3.500% 3/20/47		480,052		436,199
Uniform Mortgage-Backed Security, TBA
2.500% 7/01/54 (h)		4,700,000		3,838,578
4.500% 7/01/54 (h)		2,500,000		2,356,542
5.000% 7/01/54 (h)		2,800,000		2,706,046
5.500% 7/01/54 (h)		1,800,000		1,775,320
				26,977,064
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $28,916,735)				26,979,232
U.S. TREASURY OBLIGATIONS — 2.0%
U.S. Treasury Bonds & Notes — 2.0%
U.S. Treasury Bonds
2.250% 8/15/49 (i)		1,640,000		1,059,720
U.S. Treasury Notes
0.750% 5/31/26		1,000,000		927,234
4.875% 5/31/26		500,000		500,955
				2,487,909
TOTAL U.S. TREASURY OBLIGATIONS (Cost $2,509,191)				2,487,909
TOTAL BONDS & NOTES (Cost $129,921,494)				118,346,341
TOTAL PURCHASED OPTIONS(#) — 0.0% (Cost $2,179)				1,871

MassMutual Diversified Bond Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
WARRANTS — 0.0%
Materials — 0.0%
Hercules LLC, Expires 3/31/29, Strike 0.09 (j) (k) (l)		150	$	4,108
TOTAL WARRANTS (Cost $0)				4,108
TOTAL LONG-TERM INVESTMENTS (Cost $129,923,673)				118,352,320
SHORT-TERM INVESTMENTS — 15.7%
	Principal Amount
Commercial Paper — 12.7%
Avangrid, Inc.
5.705% 7/01/24 (a)	$	2,000,000		1,999,068
Intel Corp.
5.627% 7/18/24 (a)		2,000,000		1,993,955
Parker-Hannifin Corp.
5.554% 8/02/24 (a)		3,000,000		2,983,861
VW Credit, Inc.
5.649% 7/25/24 (a)		1,000,000		995,843
Williams Cos., Inc.
5.600% 7/19/24		3,000,000		2,990,391
Xcel Energy, Inc.
5.583% 7/02/24 (a)		5,000,000		4,996,986
				15,960,104
	Number of Shares
Investment of Cash Collateral from Securities Loaned — 1.7%
State Street Navigator Securities Lending Government Money Market Portfolio (m)		2,170,695		2,170,695
	Principal Amount
Repurchase Agreement — 1.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (n)	$	1,630,263	$	1,630,263
TOTAL SHORT-TERM INVESTMENTS (Cost $19,763,704)				19,761,062
TOTAL INVESTMENTS — 109.7% (Cost $149,687,377) (o)				138,113,382
Other Assets/(Liabilities) — (9.7)%				(12,194,746)
NET ASSETS — 100.0%			$	125,918,636

Abbreviation Legend

CLO Collateralized Loan Obligation

CMT Constant Maturity Treasury Index

FRN Floating Rate Note

ICE Inter-Continental Exchange

LIBOR London InterBank Offered Rate

REMICS Real Estate Mortgage Investment Conduits

SOFR Secured Overnight Financing Rate

STEP Step Coupon 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, 2024, the aggregate market value of these securities amounted to $66,735,648 or 53.00% of net assets.

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

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2024, was $2,304,484 or 1.83% of net assets. The Fund received $191,737 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 currently in default due to bankruptcy or failure to make payment of principal or interest of the issuer. Income is not being accrued. At June 30, 2024, these securities amounted to a value of $4,000 or 0.00% of net assets.

(e) Restricted security. Certain securities are restricted to resale. At June 30, 2024, these securities amounted to a value of $821,687 or 0.65% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

(f) 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, 2024.

(g) 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.

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

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

(j) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2024, these securities amounted to a value of $4,108 or 0.00% of net assets.

(k) Non-income producing security.

(l) Investment is valued using significant unobservable inputs.

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

(n) Maturity value of $1,630,481. Collateralized by U.S. Government Agency obligations with a rate of 5.385%, maturity date of 4/30/26, and an aggregate market value, including accrued interest, of $1,662,949.

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

(#) OTC Options Purchased
Description	Counterparty	Expiration Date		Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid/ (Received)		Unrealized Appreciation (Depreciation)
Put
USD Put BRL Call	Morgan Stanley & Co. LLC		9/30/24		5.34		65,000	USD	65,000	$	521	$	621	$	(100)
USD Put BRL Call	Morgan Stanley & Co. LLC		9/30/24		5.55		65,000	USD	65,000		1,350		1,558		(208)
										$	1,871	$	2,179	$	(308)

OTC Options Written

Description

Counterparty

Expiration Date

Exercise Price

No. of Contracts

Notional Amount

Value

Premiums Paid/ (Received)

Unrealized Appreciation (Depreciation)

Call

USD Call BRL Put

Morgan Stanley & Co. LLC

9/30/24

5.63

65,000

USD

65,000

$

(2,011)

$

(1,696)

$

(315)

Forward contracts
Counterparty	Settlement Date	Currency Purchased		Currency Sold		Unrealized Appreciation (Depreciation)
Bank of America N.A.	7/16/24	USD	251,903	GBP	198,363	$	1,131
Bank of America N.A.	8/13/24	USD	101,367	ZAR	1,885,603		(1,948)
BNP Paribas SA	8/13/24	HUF	125,551,017	USD	346,343		(6,447)
BNP Paribas SA	8/13/24	PLN	1,003,048	USD	250,000		(948)
Citibank N.A.	7/16/24	ARS	17,212,500	USD	12,750		5,724
Citibank N.A.	7/16/24	GBP	198,363	USD	247,336		3,436
Citibank N.A.	8/20/24	USD	99,803	PHP	5,779,592		1,214
Citibank N.A.	9/16/24	ARS	33,243,924	USD	27,703		4,567
Deutsche Bank AG	8/20/24	USD	102,188	CNH	734,672		1,186
Goldman Sachs International	7/23/24	USD	148,859	CHF	132,730		754
Goldman Sachs International	7/23/24	USD	100,394	ILS	377,586		345
Goldman Sachs International	8/06/24	MXN	5,454,635	USD	305,206		(8,650)
Goldman Sachs International	8/13/24	USD	99,604	CHF	89,247		(232)
Goldman Sachs International	9/25/24	BRL	676,500	USD	123,000		(3,124)
Goldman Sachs International	4/23/25	BRL	974,700	USD	180,000		(11,494)
Goldman Sachs International	4/28/25	TRY	2,351,750	USD	50,000		3,402
Goldman Sachs International	5/09/25	TRY	4,768,300	USD	104,000		3,305
HSBC Bank PLC	7/30/24	USD	155,670	TWD	5,035,053		6
HSBC Bank PLC	8/13/24	TRY	3,582,733	USD	100,301		4,497
HSBC Bank PLC	8/20/24	THB	8,957,520	USD	246,696		(1,644)
JP Morgan Chase Bank N.A.	7/16/24	BRL	653,149	USD	128,119		(11,464)
Morgan Stanley & Co. LLC	7/16/24	PEN	559,089	USD	150,224		(4,760)
Morgan Stanley & Co. LLC	7/23/24	ILS	377,586	USD	102,806		(2,757)
Morgan Stanley & Co. LLC	8/06/24	BRL	1,837,796	USD	351,826		(24,400)
Morgan Stanley & Co. LLC	8/06/24	MXN	997,433	USD	56,000		(1,772)
Morgan Stanley & Co. LLC	8/13/24	PLN	410,115	USD	103,000		(1,170)
Morgan Stanley & Co. LLC	8/13/24	USD	102,000	CHF	90,296		991
Morgan Stanley & Co. LLC	8/20/24	USD	256,252	SGD	345,024		1,222
Morgan Stanley & Co. LLC	8/20/24	USD	103,212	MYR	482,629		581
						$	(48,449)

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/Net Unrealized Appreciation (Depreciation)
Long
U.S. Treasury Long Bond	9/19/24		57	$	6,665,183	$	78,630
U.S. Treasury Ultra 10 Year	9/19/24		4		454,388		(263)
U.S. Treasury Ultra Bond	9/19/24		32		3,967,775		43,225
U.S. Treasury Note 2 Year	9/30/24		49		9,975,102		31,617
U.S. Treasury Note 5 Year	9/30/24		42		4,452,199		24,082
						$	177,291
Short
U.S. Treasury Ultra 10 Year	9/19/24		1	$	(112,405)	$	(1,126)

Currency Legend

ARS Argentinean Peso

BRL Brazilian Real

CHF Swiss Franc

CNH Offshore Chinese Yuan

GBP British Pound

HUF Hungarian Forint

ILS Israeli Shekel

MXN Mexican Peso

MYR Malaysian Ringgit

PEN Peruvian New Sol

PHP Philippine Peso

PLN Polish Zloty

SGD Singapore Dollar

THB Thai Baht

TRY New Turkish Lira

TWD Taiwan Dollar

USD U.S. Dollar

ZAR South African Rand

MassMutual High Yield Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 95.7%
BANK LOANS — 9.6%
Aerospace & Defense — 0.3%
Barnes Group, Inc., 2024 Term Loan, 1 mo. USD Term SOFR + 2.500%
7.844% VRN 9/03/30	$	911,094	$	912,233
Chemicals — 2.0%
CPC Acquisition Corp., Term Loan, 3 mo. USD Term SOFR + 3.750%
9.346% VRN 12/29/27		4,141,797		3,442,869
LSF11 A5 Holdco LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.500%
8.958% VRN 10/15/28		3,029,795		3,022,221
PMHC II, Inc., 2022 Term Loan B, 3 mo. USD Term SOFR + 4.250%
9.706% VRN 4/23/29		1,250,450		1,219,189
				7,684,279
Commercial Services — 0.3%
APi Group DE, Inc., 2024 Term Loan B, 1 mo. USD Term SOFR + 2.000%
7.344% VRN 1/03/29		1,226,160		1,224,738
Computers — 0.9%
McAfee, LLC, 2024 USD Term Loan B, 1 mo. USD Term SOFR + 3.250%
8.579% VRN 3/01/29		2,094,670		2,089,769
SonicWall US Holdings, Inc., 2nd Lien Term Loan, 3 mo. USD Term SOFR + 7.500%
12.985% VRN 5/18/26		38,923		35,750
Vision Solutions, Inc., 2021 Incremental Term Loan, 1 mo. USD Term SOFR + 4.250%
9.591% VRN 4/24/28		1,332,363		1,305,715
				3,431,234
Diversified Financial Services — 0.5%
Aretec Group, Inc., 2024 Term Loan B, 1 mo. USD Term SOFR + 4.000%
9.344% VRN 8/09/30		1,958,987		1,965,119
Electric — 0.2%
Talen Energy Supply LLC, 2023 Term Loan B, 3 mo. USD Term SOFR + 3.500%
8.827% VRN 5/17/30		860,870		869,168
Health Care - Services — 0.4%
LifePoint Health, Inc., 2024 Term Loan B, 3 mo. USD Term SOFR + 4.750%
10.056% VRN 11/16/28		867,803		871,925
Radiology Partners, Inc., 2024 Extended Term Loan B,
0.000% 1/31/29 (a)		579,762		547,875
				1,419,800

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Media — 0.7%
A-L Parent LLC, 2023 Take Back Term Loan, 1 mo. USD Term SOFR + 5.500%
10.844% VRN 6/30/28	$	2,073,584	$	2,079,411
Sinclair Television Group, Inc., Term Loan B2B,
0.000% 9/30/26 (a)		659,840		613,513
				2,692,924
Mining — 0.3%
Arsenal AIC Parent LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.750%
9.094% VRN 8/18/30		1,145,941		1,151,385
Pipelines — 0.8%
Freeport LNG Investments LLLP, Term Loan B, 3 mo. USD Term SOFR + 3.500%
9.086% VRN 12/21/28		952,500		950,909
ITT Holdings LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 3.000%
8.444% VRN 10/11/30		1,199,824		1,200,196
Waterbridge Midstream Operating LLC, 2024 Term Loan B, 3 mo. USD Term SOFR + 4.500%
9.826% VRN 5/10/29		993,064		997,205
				3,148,310
Real Estate Investment Trusts (REITS) — 0.2%
RHP Hotel Properties, LLC, 2024 Term Loan B, 1 mo. USD Term SOFR + 2.250%
7.594% VRN 5/18/30		626,937		627,250
Retail — 0.4%
1011778 B.C. Unlimited Liability Co., 2024 Term Loan B6, 1 mo. USD Term SOFR + 1.750%
7.094% VRN 9/20/30		1,508,268		1,502,854
Software — 2.4%
Banff Merger Sub, Inc., 2023 USD Term Loan, 1 mo. USD Term SOFR + 4.250%
9.344% VRN 12/29/28 (a)		3,837,111		3,840,526
Cloud Software Group, Inc., 2024 USD Term Loan B, 2 mo. USD Term SOFR + 4.000%, 3 mo. USD Term SOFR + 4.000%
9.335% VRN 3/30/29		1,965,000		1,962,052
SS&C Technologies Inc., 2024 Term Loan B8, 1 mo. USD Term SOFR + 2.000%
7.344% VRN 5/09/31		945,178		946,236
UKG, Inc., 2024 Term Loan B, 1 mo. USD Term SOFR + 3.250%
8.576% VRN 2/10/31		1,594,499		1,599,682
Veritas US, Inc., 2021 USD Term Loan B, 1 mo. USD Term SOFR + 5.000%
10.458% VRN 9/01/25		567,853		492,533
				8,841,029
Telecommunications — 0.2%
Level 3 Financing, Inc.
2024 Extended Term Loan B1, 1 mo. USD Term SOFR + 6.560%
11.904% VRN 4/15/29 (a)		348,721		340,930

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
2024 Extended Term Loan B2, 1 mo. USD Term SOFR + 6.560%
11.904% VRN 4/15/30 (a)	$	351,279	$	341,619
				682,549
TOTAL BANK LOANS (Cost $36,147,551)				36,152,872
CORPORATE DEBT — 86.1%
Advertising — 0.9%
Clear Channel Outdoor Holdings, Inc.
9.000% 9/15/28 (b)		710,000		743,339
7.500% 6/01/29 (b)		500,000		417,810
7.875% 4/01/30 (b)		750,000		754,909
Stagwell Global LLC
5.625% 8/15/29 (b)		1,514,000		1,398,358
				3,314,416
Aerospace & Defense — 1.8%
Boeing Co.
6.388% 5/01/31 (b)		359,000		365,482
6.528% 5/01/34 (b)		938,000		960,418
Spirit AeroSystems, Inc.
9.750% 11/15/30 (b)		2,233,000		2,463,258
TransDigm, Inc.
4.625% 1/15/29		1,790,700		1,670,794
4.875% 5/01/29		136,000		127,390
Triumph Group, Inc.
9.000% 3/15/28 (b)		1,076,000		1,127,906
				6,715,248
Airlines — 1.6%
Allegiant Travel Co.
7.250% 8/15/27 (b) (c)		1,702,000		1,619,771
American Airlines, Inc.
8.500% 5/15/29 (b)		1,488,000		1,545,983
Hawaiian Brand Intellectual Property Ltd./HawaiianMiles Loyalty Ltd.
5.750% 1/20/26 (b)		2,174,043		2,068,516
United Airlines, Inc.
4.375% 4/15/26 (b)		758,000		732,233
				5,966,503
Auto Manufacturers — 0.5%
JB Poindexter & Co., Inc.
8.750% 12/15/31 (b)		2,011,000		2,083,378
Auto Parts & Equipment — 0.7%
Adient Global Holdings Ltd.
4.875% 8/15/26 (b)		1,734,000		1,686,443
8.250% 4/15/31 (b) (c)		816,000		851,594
				2,538,037
Building Materials — 2.3%
EMRLD Borrower LP/Emerald Co.-Issuer, Inc.
6.625% 12/15/30 (b)		2,389,000		2,407,639

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Knife River Corp.
7.750% 5/01/31 (b)	$	1,107,000	$	1,156,818
New Enterprise Stone & Lime Co., Inc.
9.750% 7/15/28 (b)		1,785,000		1,814,727
Smyrna Ready Mix Concrete LLC
6.000% 11/01/28 (b)		1,627,000		1,589,523
8.875% 11/15/31 (b)		1,607,000		1,704,908
				8,673,615
Chemicals — 3.9%
Consolidated Energy Finance SA
5.625% 10/15/28 (b)		4,296,000		3,652,551
LSF11 A5 HoldCo LLC
6.625% 10/15/29 (b)		2,667,000		2,524,182
Methanex Corp.
5.125% 10/15/27		2,056,000		1,983,170
Olympus Water US Holding Corp.
4.250% 10/01/28 (b)		2,503,000		2,276,906
6.250% 10/01/29 (b) (c)		1,772,000		1,617,503
Polar US Borrower LLC/Schenectady International Group, Inc., (Acquired 4/17/24, Cost $899,673),
6.750% 5/15/26 (b) (d)		1,372,000		384,160
Vibrantz Technologies, Inc.
9.000% 2/15/30 (b) (c)		2,683,000		2,455,616
				14,894,088
Coal — 0.6%
Coronado Finance Pty. Ltd.
10.750% 5/15/26 (b)		2,077,000		2,154,888
Commercial Services — 1.6%
Alta Equipment Group, Inc.
9.000% 6/01/29 (b)		938,000		870,190
PECF USS Intermediate Holding III Corp.
8.000% 11/15/29 (b)		599,000		252,663
Prime Security Services Borrower LLC/Prime Finance, Inc.
6.250% 1/15/28 (b)		1,884,000		1,856,537
PROG Holdings, Inc.
6.000% 11/15/29 (b)		3,185,100		3,025,481
				6,004,871
Computers — 0.2%
Fortress Intermediate 3, Inc.
7.500% 6/01/31 (b)		941,000		964,101
Cosmetics & Personal Care — 0.5%
Perrigo Finance Unlimited Co.
5.150% STEP 6/15/30		2,089,000		1,920,452
Distribution & Wholesale — 0.4%
Resideo Funding, Inc.
4.000% 9/01/29 (b)		1,882,000		1,658,736
Diversified Financial Services — 7.5%
Aretec Group, Inc.
10.000% 8/15/30 (b)		1,099,000		1,195,259
Coinbase Global, Inc.

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
3.375% 10/01/28 (b)	$	305,000	$	261,496
3.625% 10/01/31 (b)		373,000		299,070
GGAM Finance Ltd.
8.000% 2/15/27 (b)		2,005,000		2,071,011
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (b)		8,817,485		8,488,302
Jefferson Capital Holdings LLC
6.000% 8/15/26 (b)		2,664,000		2,623,376
9.500% 2/15/29 (b)		1,965,000		2,025,571
Macquarie Airfinance Holdings Ltd.
8.125% 3/30/29 (b)		1,757,000		1,857,492
8.375% 5/01/28 (b)		1,977,000		2,083,701
Midcap Financial Issuer Trust
5.625% 1/15/30 (b)		857,000		740,906
6.500% 5/01/28 (b)		1,492,000		1,410,956
PRA Group, Inc.
5.000% 10/01/29 (b)		4,020,000		3,442,598
7.375% 9/01/25 (b)		1,582,000		1,583,822
8.375% 2/01/28 (b)		445,000		443,542
				28,527,102
Electric — 3.0%
PG&E Corp.
5.000% 7/01/28 (c)		3,121,000		3,002,848
5.250% 7/01/30 (c)		583,000		556,780
Pike Corp.
5.500% 9/01/28 (b)		2,213,000		2,123,371
8.625% 1/31/31 (b)		1,071,000		1,134,532
Talen Energy Supply LLC
8.625% 6/01/30 (b)		4,435,000		4,728,703
				11,546,234
Electrical Components & Equipment — 0.3%
Energizer Holdings, Inc.
4.375% 3/31/29 (b)		1,145,000		1,035,822
Electronics — 0.6%
Atkore, Inc.
4.250% 6/01/31 (b)		2,549,000		2,243,660
Engineering & Construction — 2.2%
Arcosa, Inc.
4.375% 4/15/29 (b)		2,166,000		2,011,400
Global Infrastructure Solutions, Inc.
5.625% 6/01/29 (b)		2,528,000		2,379,796
7.500% 4/15/32 (b)		1,457,000		1,429,124
MasTec, Inc.
4.500% 8/15/28 (b) (c)		1,815,000		1,731,350
Railworks Holdings LP/Railworks Rally, Inc.
8.250% 11/15/28 (b)		879,000		894,383
				8,446,053
Entertainment — 0.7%
Live Nation Entertainment, Inc.
3.750% 1/15/28 (b)		19,000		17,649
4.750% 10/15/27 (b)		930,000		891,242

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Midwest Gaming Borrower LLC/Midwest Gaming Finance Corp.
4.875% 5/01/29 (b)	$	987,000	$	919,383
Ontario Gaming GTA LP/OTG Co.-Issuer, Inc.
8.000% 8/01/30 (b) (c)		684,000		701,955
				2,530,229
Environmental Controls — 0.2%
Enviri Corp.
5.750% 7/31/27 (b)		847,000		805,102
Food — 1.8%
Albertsons Cos., Inc./Safeway, Inc./New Albertsons LP/Albertsons LLC
4.875% 2/15/30 (b)		952,500		900,113
JBS USA Holding Lux SARL/JBS USA Food Co./JBS Lux Co. SARL
3.625% 1/15/32		3,863,000		3,334,844
3.750% 12/01/31		400,000		350,216
Pilgrim's Pride Corp.
4.250% 4/15/31 (b)		2,285,000		2,079,657
				6,664,830
Hand & Machine Tools — 1.5%
Regal Rexnord Corp.
6.400% 4/15/33		5,539,000		5,667,422
Health Care - Products — 0.5%
Medline Borrower LP/Medline Co.-Issuer, Inc.
6.250% 4/01/29 (b)		320,000		323,622
Neogen Food Safety Corp.
8.625% 7/20/30 (b) (c)		1,658,000		1,789,963
				2,113,585
Health Care - Services — 4.6%
CHS/Community Health Systems, Inc.
4.750% 2/15/31 (b)		1,415,000		1,112,516
5.250% 5/15/30 (b)		50,000		41,225
5.625% 3/15/27 (b)		556,000		517,751
6.000% 1/15/29 (b)		1,141,000		1,006,940
6.875% 4/15/29 (b)		472,000		360,940
10.875% 1/15/32 (b)		444,000		462,109
LifePoint Health, Inc.
9.875% 8/15/30 (b)		2,140,000		2,282,147
10.000% 6/01/32 (b)		1,287,000		1,315,846
11.000% 10/15/30 (b)		1,964,000		2,163,872
Molina Healthcare, Inc.
4.375% 6/15/28 (b)		1,237,000		1,164,309
Radiology Partners, Inc.
7.775% 1/31/29 (b)		1,046,732		981,311
9.781% 2/15/30 (b)		3,620,816		2,896,653
Tenet Healthcare Corp.
4.375% 1/15/30		1,178,000		1,091,955
6.125% 6/15/30		2,081,000		2,066,948
				17,464,522
Home Builders — 1.8%
Ashton Woods USA LLC/Ashton Woods Finance Co.
4.625% 8/01/29 (b)		1,241,000		1,118,085

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Beazer Homes USA, Inc.
7.500% 3/15/31 (b)	$	744,000	$	742,448
Mattamy Group Corp.
4.625% 3/01/30 (b)		5,293,000		4,892,685
5.250% 12/15/27 (b)		25,000		24,290
				6,777,508
Housewares — 0.3%
Newell Brands, Inc.
5.700% STEP 4/01/26		419,000		413,848
6.375% 9/15/27 (c)		291,000		286,968
6.875% STEP 4/01/36		417,000		373,320
				1,074,136
Insurance — 0.9%
Highlands Holdings Bond Issuer Ltd./Highlands Holdings Bond Co.-Issuer, Inc.
7.625% 10/15/25 (b)		3,333,066		3,339,102
Internet — 0.5%
Getty Images, Inc.
9.750% 3/01/27 (b)		1,830,000		1,833,646
Investment Companies — 1.8%
Hannon Armstrong Sustainable Infrastructure Capital, Inc.
6.375% 7/01/34 (b) (e)		1,588,000		1,554,574
Icahn Enterprises LP/Icahn Enterprises Finance Corp.
6.250% 5/15/26		5,270,000		5,228,391
				6,782,965
Leisure Time — 3.9%
Carnival Corp.
7.625% 3/01/26 (b)		651,000		657,435
5.750% 3/01/27 (b)		1,023,000		1,010,645
6.000% 5/01/29 (b)		3,068,000		3,030,631
7.000% 8/15/29 (b)		184,000		190,732
Life Time, Inc.
8.000% 4/15/26 (b)		398,000		402,682
NCL Corp. Ltd.
5.875% 3/15/26 (b)		781,000		772,114
5.875% 2/15/27 (b)		224,000		221,074
8.375% 2/01/28 (b)		668,000		698,021
NCL Finance Ltd.
6.125% 3/15/28 (b) (c)		620,000		612,271
Royal Caribbean Cruises Ltd.
4.250% 7/01/26 (b)		1,609,000		1,557,185
5.500% 8/31/26 (b)		601,000		594,316
5.375% 7/15/27 (b)		451,000		444,064
5.500% 4/01/28 (b)		504,000		497,571
Sabre GLBL, Inc.
8.625% 6/01/27 (b)		2,924,000		2,693,781
Sabre Global, Inc., Convertible,
7.320% 8/01/26		500,000		459,500

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Viking Cruises Ltd.
7.000% 2/15/29 (b)	$	1,128,000	$	1,134,010
				14,976,032
Lodging — 0.8%
MGM Resorts International
6.500% 4/15/32		952,500		948,167
Sugarhouse HSP Gaming Prop Mezz LP/Sugarhouse HSP Gaming Finance Corp.
5.875% 5/15/25 (b)		1,046,000		1,039,348
Wyndham Hotels & Resorts, Inc.
4.375% 8/15/28 (b)		1,071,000		998,433
				2,985,948
Media — 5.0%
Altice Financing SA
5.000% 1/15/28 (b)		464,000		352,839
5.750% 8/15/29 (b)		699,000		507,514
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 2/01/31 (b)		2,361,000		1,927,617
4.250% 1/15/34 (b)		3,376,000		2,562,579
4.500% 5/01/32		853,000		687,024
CSC Holdings LLC
5.750% 1/15/30 (b)		939,000		354,423
7.500% 4/01/28 (b)		800,000		424,573
11.750% 1/31/29 (b)		1,850,000		1,577,780
Cumulus Media New Holdings, Inc.
8.000% 7/01/29 (b)		847,000		357,527
Directv Financing LLC/Directv Financing Co.-Obligor, Inc.
5.875% 8/15/27 (b)		3,333,000		3,134,974
DISH DBS Corp.
5.125% 6/01/29		380,000		150,484
7.375% 7/01/28		1,266,000		538,404
DISH Network Corp.
11.750% 11/15/27 (b)		818,000		802,049
Gray Television, Inc.
5.375% 11/15/31 (b)		747,000		423,456
7.000% 5/15/27 (b) (c)		195,000		179,537
LCPR Senior Secured Financing DAC
6.750% 10/15/27 (b)		1,385,000		1,297,101
McGraw-Hill Education, Inc.
5.750% 8/01/28 (b)		910,000		877,510
Time Warner Cable Enterprises LLC
8.375% 7/15/33		836,000		923,640
Virgin Media Secured Finance PLC
4.500% 8/15/30 (b)		236,000		200,113
5.500% 5/15/29 (b)		1,317,000		1,203,937
Virgin Media Vendor Financing Notes IV DAC
5.000% 7/15/28 (b)		588,000		523,206
				19,006,287
Mining — 1.1%
Constellium SE
3.750% 4/15/29 (b)		2,250,000		2,039,911
First Quantum Minerals Ltd.
9.375% 3/01/29 (b)		1,397,000		1,459,691

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Novelis Corp.
3.250% 11/15/26 (b)	$	304,000	$	286,065
3.875% 8/15/31 (b)		313,000		270,990
				4,056,657
Miscellaneous - Manufacturing — 0.6%
Amsted Industries, Inc.
5.625% 7/01/27 (b)		2,435,000		2,394,680
Oil & Gas — 4.0%
Apache Corp.
4.750% 4/15/43 (c)		816,000		652,805
5.100% 9/01/40		607,000		517,984
5.350% 7/01/49		910,000		761,850
CVR Energy, Inc.
5.750% 2/15/28 (b)		1,011,000		937,460
Hilcorp Energy I LP/Hilcorp Finance Co.
6.000% 4/15/30 (b)		443,000		427,915
6.000% 2/01/31 (b)		1,792,000		1,710,347
Nabors Industries Ltd.
7.250% 1/15/26 (b)		983,000		997,340
Nabors Industries, Inc.
7.375% 5/15/27 (b)		777,000		790,357
Occidental Petroleum Corp.
6.200% 3/15/40		1,570,000		1,573,060
6.600% 3/15/46		801,000		835,630
Parkland Corp.
4.625% 5/01/30 (b)		795,000		725,075
5.875% 7/15/27 (b)		2,479,000		2,446,498
Sunoco LP/Sunoco Finance Corp.
5.875% 3/15/28		245,000		243,933
7.000% 9/15/28 (b)		510,000		522,754
Transocean Poseidon Ltd.
6.875% 2/01/27 (b)		132,300		132,134
Transocean, Inc.
8.250% 5/15/29 (b)		978,000		980,424
8.500% 5/15/31 (b)		978,000		978,420
				15,233,986
Oil & Gas Services — 0.8%
Weatherford International Ltd.
8.625% 4/30/30 (b)		2,835,000		2,937,732
Packaging & Containers — 2.4%
Ardagh Metal Packaging Finance USA LLC/Ardagh Metal Packaging Finance PLC
4.000% 9/01/29 (b) (c)		1,162,000		983,349
Clydesdale Acquisition Holdings, Inc.
8.750% 4/15/30 (b)		2,181,000		2,134,446
Graham Packaging Co., Inc.
7.125% 8/15/28 (b)		1,295,000		1,223,337
Mauser Packaging Solutions Holding Co.
7.875% 4/15/27 (b)		2,895,000		2,952,875
9.250% 4/15/27 (b)		1,077,000		1,077,691

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Trident TPI Holdings, Inc.
12.750% 12/31/28 (b)	$	527,000	$	575,592
				8,947,290
Pharmaceuticals — 3.8%
1375209 BC Ltd.
9.000% 1/30/28 (b) (c)		4,352,000		4,184,781
AdaptHealth LLC
4.625% 8/01/29 (b)		1,000,000		866,506
5.125% 3/01/30 (b)		2,000,000		1,749,513
Bausch Health Cos., Inc.
4.875% 6/01/28 (b) (c)		1,347,000		1,008,041
5.500% 11/01/25 (b)		870,000		810,431
14.000% 10/15/30 (b)		286,000		220,220
Grifols SA
4.750% 10/15/28 (b) (c)		2,379,000		2,053,016
Herbalife Ltd., Convertible,
4.250% 6/15/28 (b)		399,000		366,282
Herbalife Nutrition Ltd./HLF Financing, Inc.
7.875% 9/01/25 (b)		1,064,000		1,044,983
HLF Financing SARL LLC/Herbalife International, Inc.
4.875% 6/01/29 (b)		246,000		170,433
12.250% 4/15/29 (b)		875,000		872,163
Organon & Co./Organon Foreign Debt Co.-Issuer BV
6.750% 5/15/34 (b)		680,000		679,059
7.875% 5/15/34 (b)		516,000		530,192
				14,555,620
Pipelines — 6.3%
Blue Racer Midstream LLC/Blue Racer Finance Corp.
7.250% 7/15/32 (b)		572,000		588,101
CQP Holdco LP/BIP-V Chinook Holdco LLC
5.500% 6/15/31 (b)		4,376,000		4,148,124
Energy Transfer LP
5 yr. CMT + 5.694% 6.500% VRN (f)		500,000		493,175
5 yr. CMT + 5.306% 7.125% VRN (f)		700,000		693,378
EnLink Midstream Partners LP
4.150% 6/01/25		27,000		26,534
5.050% 4/01/45		160,000		131,510
5.450% 6/01/47		380,000		329,671
5.600% 4/01/44		1,488,000		1,319,775
EQM Midstream Partners LP
6.000% 7/01/25 (b)		339,000		339,067
6.500% 7/01/27 (b)		763,000		771,192
7.500% 6/01/27 (b)		832,000		849,648
7.500% 6/01/30 (b)		176,000		187,825
Flex Intermediate Holdco LLC
3.363% 6/30/31 (b)		2,185,000		1,818,055
Genesis Energy LP/Genesis Energy Finance Corp.
7.875% 5/15/32		379,000		382,612
8.000% 1/15/27		553,000		565,420
8.250% 1/15/29		750,000		774,254
Harvest Midstream I LP
7.500% 9/01/28 (b)		1,911,000		1,941,574
Hess Midstream Operations LP
6.500% 6/01/29 (b)		263,000		266,619

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
ITT Holdings LLC
6.500% 8/01/29 (b)	$	4,327,000	$	3,920,287
NGL Energy Operating LLC/NGL Energy Finance Corp.
8.125% 2/15/29 (b)		624,000		635,800
8.375% 2/15/32 (b)		1,102,000		1,118,965
Northriver Midstream Finance LP
6.750% 7/15/32 (b) (e)		789,000		790,381
Venture Global Calcasieu Pass LLC
3.875% 8/15/29 (b)		869,000		791,433
4.125% 8/15/31 (b)		994,000		891,982
				23,775,382
Private Equity — 1.0%
HAT Holdings I LLC/HAT Holdings II LLC
3.375% 6/15/26 (b)		1,520,000		1,433,280
8.000% 6/15/27 (b)		2,143,000		2,227,944
				3,661,224
Real Estate Investment Trusts (REITS) — 1.1%
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (b)		866,000		758,734
Necessity Retail REIT, Inc./American Finance Operating Partner LP
4.500% 9/30/28 (b)		135,000		118,772
RLJ Lodging Trust LP
4.000% 9/15/29 (b)		2,345,000		2,071,175
Service Properties Trust
4.950% 2/15/27		284,000		258,078
5.500% 12/15/27		505,000		469,114
8.375% 6/15/29		470,000		462,013
				4,137,886
Retail — 3.9%
1011778 BC ULC/New Red Finance, Inc.
6.125% 6/15/29 (b)		1,577,000		1,582,716
Bath & Body Works, Inc.
6.750% 7/01/36		658,000		655,090
6.875% 11/01/35		1,478,000		1,490,600
BlueLinx Holdings, Inc.
6.000% 11/15/29 (b)		1,578,000		1,467,475
Carvana Co.
14.000% 6/01/31 (b)		63,000		70,855
CEC Entertainment LLC
6.750% 5/01/26 (b)		855,000		848,070
PetSmart, Inc./PetSmart Finance Corp.
4.750% 2/15/28 (b)		610,000		566,615
7.750% 2/15/29 (b)		1,096,000		1,067,360
Raising Cane's Restaurants LLC
9.375% 5/01/29 (b)		294,000		317,531
Sonic Automotive, Inc.
4.625% 11/15/29 (b)		585,000		528,032
Specialty Building Products Holdings LLC/SBP Finance Corp.
6.375% 9/30/26 (b)		1,918,000		1,884,489
Staples, Inc.
10.750% 9/01/29 (b)		832,000		790,672
12.750% 1/15/30 (b)		602,744		468,971

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Suburban Propane Partners LP/Suburban Energy Finance Corp.
5.000% 6/01/31 (b)	$	1,271,000	$	1,144,585
Superior Plus LP/Superior General Partner, Inc.
4.500% 3/15/29 (b)		2,169,000		1,990,436
				14,873,497
Software — 1.4%
Boxer Parent Co., Inc.
9.125% 3/01/26 (b)		158,000		158,123
Cloud Software Group, Inc.
6.500% 3/31/29 (b)		1,504,000		1,444,313
8.250% 6/30/32 (b)		445,000		453,564
9.000% 9/30/29 (b)		1,129,000		1,095,379
Consensus Cloud Solutions, Inc.
6.000% 10/15/26 (b)		934,000		910,996
Veritas US, Inc./Veritas Bermuda Ltd.
7.500% 9/01/25 (b)		1,317,000		1,138,857
				5,201,232
Telecommunications — 5.1%
C&W Senior Finance Ltd.
6.875% 9/15/27 (b)		2,136,000		2,049,425
Connect Finco SARL/Connect US Finco LLC
6.750% 10/01/26 (b)		3,042,000		2,935,990
Consolidated Communications, Inc.
5.000% 10/01/28 (b)		1,858,000		1,536,797
6.500% 10/01/28 (b)		790,000		675,139
Frontier Communications Holdings LLC
6.000% 1/15/30 (b) (c)		2,191,000		1,906,086
6.750% 5/01/29 (b)		902,000		827,367
8.625% 3/15/31 (b)		3,081,000		3,173,820
Hughes Satellite Systems Corp.
6.625% 8/01/26		2,280,000		1,060,157
Intelsat Jackson Holdings SA
6.500% 3/15/30 (b)		587,000		546,129
Level 3 Financing, Inc.
4.500% 4/01/30 (b)		557,000		302,746
11.000% 11/15/29 (b)		3,793,000		3,881,388
Viasat, Inc.
6.500% 7/15/28 (b) (c)		376,000		284,642
				19,179,686
Transportation — 1.7%
Carriage Purchaser, Inc.
7.875% 10/15/29 (b) (c)		1,473,000		1,357,026
Genesee & Wyoming, Inc.
6.250% 4/15/32 (b)		1,297,000		1,292,141

MassMutual High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Seaspan Corp.
5.500% 8/01/29 (b)	$	4,074,320	$	3,636,590
				6,285,757
TOTAL CORPORATE DEBT (Cost $334,637,019)				325,949,147
TOTAL BONDS & NOTES (Cost $370,784,570)				362,102,019
TOTAL LONG-TERM INVESTMENTS (Cost $370,784,570)				362,102,019
SHORT-TERM INVESTMENTS — 9.0%
Commercial Paper — 4.5%
Avangrid, Inc.
5.500% 7/03/24 (b)		3,000,000		2,997,672
Eversource Energy
5.737% 7/15/24 (b)		5,000,000		4,987,159
J M Smucker Co.
5.508% 7/01/24 (b)		5,000,000		4,997,740
L3Harris Technologies, Inc.
5.670% 7/02/24 (b)		4,000,000		3,997,588
				16,980,159
	Number of Shares
Investment of Cash Collateral from Securities Loaned — 4.5%
State Street Navigator Securities Lending Government Money Market Portfolio (g)		17,141,988		17,141,988
TOTAL SHORT-TERM INVESTMENTS (Cost $34,124,283)				34,122,147
TOTAL INVESTMENTS — 104.7% (Cost $404,908,853) (h)				396,224,166
Other Assets/(Liabilities) — (4.7)%				(17,741,453)
NET ASSETS — 100.0%			$	378,482,713

Abbreviation Legend

CMT Constant Maturity Treasury Index

SOFR Secured Overnight Financing Rate

STEP Step Coupon 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, 2024 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, 2024, the aggregate market value of these securities amounted to $297,450,098 or 78.59% of net assets.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2024, was $17,930,544 or 4.74% of net assets. The Fund received $1,202,544 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) Restricted security. Certain securities are restricted to resale. At June 30, 2024, these securities amounted to a value of $384,160 or 0.10% of net assets. The Fund generally bears the costs, if any, associated with the disposition of restricted securities.

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

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

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

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

MassMutual Balanced Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 64.5%
COMMON STOCK — 64.5%
Communication Services — 2.2%
Electronic Arts, Inc.		1,504	$	209,552
Netflix, Inc. (a)		798		538,554
Omnicom Group, Inc.		1,021		91,584
Verizon Communications, Inc.		22,548		929,880
Walt Disney Co.		5,118		508,166
				2,277,736
Consumer Discretionary — 5.5%
Aptiv PLC (a)		584		41,125
AutoZone, Inc. (a)		127		376,441
Booking Holdings, Inc.		182		720,993
Chipotle Mexican Grill, Inc. (a)		4,600		288,190
DR Horton, Inc.		857		120,777
eBay, Inc.		2,928		157,292
Ford Motor Co.		21,757		272,833
Garmin Ltd.		968		157,706
Genuine Parts Co.		458		63,350
Hilton Worldwide Holdings, Inc.		1,093		238,493
Home Depot, Inc.		3,299		1,135,648
Las Vegas Sands Corp.		1,727		76,420
Lowe's Cos., Inc.		3,350		738,541
Lululemon Athletica, Inc. (a)		245		73,181
Marriott International, Inc. Class A		724		175,041
NIKE, Inc. Class B		2,232		168,226
Ross Stores, Inc.		1,124		163,340
Royal Caribbean Cruises Ltd. (a)		286		45,597
TJX Cos., Inc.		4,067		447,777
Ulta Beauty, Inc. (a)		153		59,038
Yum! Brands, Inc.		1,210		160,277
				5,680,286
Consumer Staples — 4.8%
Brown-Forman Corp. Class B		272		11,748
Church & Dwight Co., Inc.		475		49,248
Coca-Cola Co.		9,673		615,686
Colgate-Palmolive Co.		5,647		547,985
Constellation Brands, Inc. Class A		401		103,169
Dollar General Corp.		391		51,702
Dollar Tree, Inc. (a)		259		27,653
Estee Lauder Cos., Inc. Class A		266		28,302
General Mills, Inc.		7,505		474,766
Hershey Co.		421		77,392
Hormel Foods Corp.		647		19,727
Kellanova		1,384		79,829
Kenvue, Inc.		1,800		32,724

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Keurig Dr Pepper, Inc.		1,267	$	42,318
Kimberly-Clark Corp.		1,122		155,060
Kroger Co.		4,188		209,107
McCormick & Co., Inc.		259		18,374
Mondelez International, Inc. Class A		3,431		224,525
PepsiCo, Inc.		3,836		632,672
Procter & Gamble Co.		7,251		1,195,835
Sysco Corp.		1,266		90,380
Target Corp.		1,702		251,964
				4,940,166
Energy — 2.0%
Baker Hughes Co.		2,830		99,531
Cheniere Energy, Inc.		2,744		479,734
Halliburton Co.		5,458		184,371
Kinder Morgan, Inc.		34,058		676,732
ONEOK, Inc.		1,168		95,250
Schlumberger NV		2,923		137,907
Williams Cos., Inc.		8,481		360,443
				2,033,968
Financials — 7.8%
Aflac, Inc.		1,731		154,596
Allstate Corp.		1,480		236,297
American Express Co.		2,289		530,018
Ameriprise Financial, Inc.		264		112,778
Aon PLC Class A		236		69,285
Apollo Global Management, Inc.		320		37,782
Arch Capital Group Ltd. (a)		1,772		178,777
Arthur J Gallagher & Co.		292		75,719
Bank of New York Mellon Corp.		933		55,877
BlackRock, Inc.		157		123,609
Blackstone, Inc.		700		86,660
Block, Inc. (a)		133		8,577
Charles Schwab Corp.		1,453		107,072
Chubb Ltd.		2,530		645,352
CME Group, Inc.		757		148,826
Discover Financial Services		697		91,175
Fidelity National Information Services, Inc.		3,561		268,357
Fifth Third Bancorp		1,454		53,056
Fiserv, Inc. (a)		2,924		435,793
Global Payments, Inc.		443		42,838
Hartford Financial Services Group, Inc.		3,601		362,045
Intercontinental Exchange, Inc.		902		123,475
KKR & Co., Inc.		497		52,304
M&T Bank Corp.		397		60,090
Marsh & McLennan Cos., Inc.		1,068		225,049
MetLife, Inc.		4,063		285,182
Moody's Corp.		238		100,181
Morgan Stanley		2,632		255,804
MSCI, Inc.		65		31,314
Nasdaq, Inc.		633		38,145
NU Holdings Ltd. Class A (a)		2,405		31,000
PayPal Holdings, Inc. (a)		2,942		170,724
Principal Financial Group, Inc.		409		32,086
Progressive Corp.		3,894		808,823
Prudential Financial, Inc.		1,341		157,152

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Regions Financial Corp.		1,691	$	33,888
S&P Global, Inc.		310		138,260
State Street Corp.		855		63,270
T. Rowe Price Group, Inc.		369		42,549
Travelers Cos., Inc.		1,261		256,412
Truist Financial Corp.		1,067		41,453
Visa, Inc. Class A		4,677		1,227,572
Willis Towers Watson PLC		398		104,332
				8,103,554
Health Care — 7.9%
Abbott Laboratories		3,180		330,434
Agilent Technologies, Inc.		497		64,426
Align Technology, Inc. (a)		47		11,347
Amgen, Inc.		890		278,080
Baxter International, Inc.		674		22,545
Becton Dickinson & Co.		504		117,790
Biogen, Inc. (a)		98		22,718
BioNTech SE ADR (a)		285		22,903
Boston Scientific Corp. (a)		3,524		271,383
Bristol-Myers Squibb Co.		4,103		170,398
Cardinal Health, Inc.		549		53,978
Cencora, Inc.		624		140,587
Centene Corp. (a)		1,058		70,145
Cigna Group		1,347		445,278
CVS Health Corp.		5,066		299,198
Danaher Corp.		746		186,388
Dexcom, Inc. (a)		133		15,080
Edwards Lifesciences Corp. (a)		529		48,864
Elevance Health, Inc.		584		316,446
Eli Lilly & Co.		1,194		1,081,024
Gilead Sciences, Inc.		2,224		152,589
GRAIL, Inc. (a)		9		143
Humana, Inc.		51		19,056
IDEXX Laboratories, Inc. (a)		60		29,232
Illumina, Inc. (a)		56		5,845
Intuitive Surgical, Inc. (a)		237		105,429
IQVIA Holdings, Inc. (a)		253		53,494
McKesson Corp.		669		390,723
Medtronic PLC		3,250		255,808
Merck & Co., Inc.		8,552		1,058,738
Mettler-Toledo International, Inc. (a)		28		39,133
Moderna, Inc. (a)		92		10,925
Pfizer, Inc.		4,086		114,326
Regeneron Pharmaceuticals, Inc. (a)		242		254,349
Stryker Corp.		528		179,652
Thermo Fisher Scientific, Inc.		728		402,584
UnitedHealth Group, Inc.		1,437		731,807
Veeva Systems, Inc. Class A (a)		127		23,242
Vertex Pharmaceuticals, Inc. (a)		550		257,796
Waters Corp. (a)		60		17,407
West Pharmaceutical Services, Inc.		53		17,458
Zoetis, Inc.		369		63,970
				8,152,718
Industrials — 4.8%
AMETEK, Inc.		688		114,696

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Automatic Data Processing, Inc.		787	$	187,849
Carrier Global Corp.		884		55,763
Cintas Corp.		261		182,768
Copart, Inc. (a)		1,820		98,571
CSX Corp.		7,524		251,678
Cummins, Inc.		1,147		317,639
Deere & Co.		759		283,585
Eaton Corp. PLC		739		231,713
Emerson Electric Co.		650		71,604
FedEx Corp.		535		160,414
Honeywell International, Inc.		1,567		334,617
Illinois Tool Works, Inc.		706		167,294
Ingersoll Rand, Inc.		975		88,569
Johnson Controls International PLC		786		52,245
Norfolk Southern Corp.		311		66,769
Otis Worldwide Corp.		993		95,586
Paychex, Inc.		471		55,842
Republic Services, Inc.		1,837		357,003
Rockwell Automation, Inc.		133		36,612
Trane Technologies PLC		559		183,872
Union Pacific Corp.		1,148		259,747
United Parcel Service, Inc. Class B		857		117,280
United Rentals, Inc.		207		133,873
Verisk Analytics, Inc.		298		80,326
Vertiv Holdings Co. Class A		862		74,623
W.W. Grainger, Inc.		219		197,591
Waste Connections, Inc.		1,059		185,706
Waste Management, Inc.		2,475		528,017
Xylem, Inc.		230		31,195
				5,003,047
Information Technology — 25.1%
Accenture PLC Class A		1,989		603,483
Adobe, Inc. (a)		729		404,989
Advanced Micro Devices, Inc. (a)		1,146		185,893
Amphenol Corp. Class A		5,561		374,645
Analog Devices, Inc.		854		194,934
ANSYS, Inc. (a)		142		45,653
Apple, Inc.		22,954		4,834,571
Applied Materials, Inc.		3,363		793,634
Arista Networks, Inc. (a)		437		153,160
Autodesk, Inc. (a)		324		80,174
Broadcom, Inc.		873		1,401,628
Cadence Design Systems, Inc. (a)		789		242,815
CDW Corp.		557		124,679
Cisco Systems, Inc.		11,806		560,903
Cognizant Technology Solutions Corp. Class A		1,261		85,748
Corning, Inc.		1,747		67,871
Crowdstrike Holdings, Inc. Class A (a)		443		169,753
Dell Technologies, Inc. Class C		1,302		179,559
Fortinet, Inc. (a)		1,247		75,157
Gartner, Inc. (a)		208		93,404
GLOBALFOUNDRIES, Inc. (a)		71		3,590
Hewlett Packard Enterprise Co.		7,413		156,933
HP, Inc.		2,108		73,822
HubSpot, Inc. (a)		60		35,387
Intel Corp.		5,862		181,546
International Business Machines Corp.		5,233		905,047

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Intuit, Inc.		736	$	483,707
Keysight Technologies, Inc. (a)		369		50,461
KLA Corp.		510		420,500
Lam Research Corp.		504		536,684
Marvell Technology, Inc.		826		57,737
Micron Technology, Inc.		1,474		193,875
Microsoft Corp.		10,972		4,903,935
Monolithic Power Systems, Inc.		60		49,301
Motorola Solutions, Inc.		735		283,747
NetApp, Inc.		1,144		147,347
NVIDIA Corp.		35,956		4,442,004
Oracle Corp.		2,653		374,604
Palo Alto Networks, Inc. (a)		398		134,926
Roper Technologies, Inc.		344		193,899
Salesforce, Inc.		2,609		670,774
ServiceNow, Inc. (a)		480		377,602
Snowflake, Inc. Class A (a)		164		22,155
Super Micro Computer, Inc. (a)		27		22,122
Synopsys, Inc. (a)		230		136,864
TE Connectivity Ltd.		910		136,891
Texas Instruments, Inc.		1,697		330,117
Workday, Inc. Class A (a)		346		77,352
				26,075,582
Materials — 1.7%
Air Products & Chemicals, Inc.		94		24,257
Ball Corp.		373		22,388
Dow, Inc.		2,159		114,535
DuPont de Nemours, Inc.		1,827		147,055
Ecolab, Inc.		615		146,370
International Flavors & Fragrances, Inc.		195		18,566
Linde PLC (LIN US)		1,964		861,823
LyondellBasell Industries NV Class A		1,537		147,029
Martin Marietta Materials, Inc.		102		55,264
Newmont Corp. (NEM US)		289		12,100
PPG Industries, Inc.		415		52,244
Sherwin-Williams Co.		515		153,691
Vulcan Materials Co.		182		45,260
				1,800,582
Real Estate — 0.9%
Alexandria Real Estate Equities, Inc.		289		33,804
American Tower Corp.		430		83,583
AvalonBay Communities, Inc.		341		70,549
CBRE Group, Inc. Class A (a)		684		60,951
Crown Castle, Inc.		607		59,304
Digital Realty Trust, Inc.		423		64,317
Equinix, Inc.		116		87,766
Equity Residential		1,100		76,274
Extra Space Storage, Inc.		172		26,731
Prologis, Inc.		703		78,954
Public Storage		398		114,485
SBA Communications Corp.		87		17,078
Simon Property Group, Inc.		739		112,180
Ventas, Inc.		699		35,831

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
VICI Properties, Inc.		2,301	$	65,901
				987,708
Utilities — 1.8%
Ameren Corp.		482		34,275
American Electric Power Co., Inc.		1,080		94,759
American Water Works Co., Inc.		101		13,045
CMS Energy Corp.		692		41,195
Consolidated Edison, Inc.		882		78,869
Dominion Energy, Inc.		818		40,082
Duke Energy Corp.		4,091		410,041
Edison International		851		61,110
Entergy Corp.		655		70,085
Eversource Energy		680		38,563
Exelon Corp.		3,159		109,333
FirstEnergy Corp.		669		25,603
NextEra Energy, Inc.		1,819		128,803
PPL Corp.		3,925		108,526
Public Service Enterprise Group, Inc.		2,833		208,792
Sempra		1,054		80,167
Southern Co.		2,197		170,421
WEC Energy Group, Inc.		1,470		115,336
Xcel Energy, Inc.		1,743		93,094
				1,922,099
TOTAL COMMON STOCK (Cost $54,506,545)				66,977,446
TOTAL EQUITIES (Cost $54,506,545)				66,977,446
	Principal Amount
BONDS & NOTES — 36.4%
CORPORATE DEBT — 11.0%
Agriculture — 0.1%
Archer-Daniels-Midland Co.
2.700% 9/15/51	$	49,000		29,958
Bunge Ltd. Finance Corp.
1.630% 8/17/25		13,000		12,433
3.250% 8/15/26		47,000		44,959
				87,350
Airlines — 0.1%
American Airlines Pass-Through Trust, Series 2021-1A, Class EETC,
2.875% 1/11/36		63,450		54,358
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.500% 10/20/25 (b)		41,497		40,994
				95,352
Auto Manufacturers — 0.2%
General Motors Financial Co., Inc.
5.800% 6/23/28		72,000		72,882

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
PACCAR Financial Corp.
4.600% 1/10/28	$	91,000	$	90,117
				162,999
Banks — 2.8%
Australia & New Zealand Banking Group Ltd. 5 yr. CMT + 1.700%
2.570% VRN 11/25/35 (b)		225,000		184,732
Bank of America Corp.
5 yr. CMT + 1.200% 2.482% VRN 9/21/36		162,000		129,125
4.183% 11/25/27		41,000		39,581
3 mo. USD Term SOFR + 2.076% 4.244% VRN 4/24/38		23,000		20,318
3 mo. USD Term SOFR + 1.572% 4.271% VRN 7/23/29		18,000		17,343
4.750% 4/21/45		63,000		56,046
1 day USD SOFR + 1.910% 5.288% VRN 4/25/34		69,000		68,276
5 yr. CMT + 3.231% 6.125% VRN (c)		162,000		162,872
7.750% 5/14/38		20,000		23,783
Bank of New York Mellon Corp. 5 yr. CMT + 2.630%
3.750% VRN (c)		156,000		143,955
Bank of Nova Scotia
4.500% 12/16/25		36,000		35,426
Citigroup, Inc.
4.450% 9/29/27		27,000		26,318
1 day USD SOFR + 2.086% 4.910% VRN 5/24/33		71,000		68,178
1 day USD SOFR + 1.364% 5.174% VRN 2/13/30		37,000		36,784
5.500% 9/13/25		54,000		53,941
5.875% 1/30/42		18,000		18,454
6.000% 10/31/33		16,000		16,398
6.625% 6/15/32		14,000		14,943
8.125% 7/15/39		14,000		17,502
Comerica, Inc. 1 day USD SOFR + 2.155%
5.982% VRN 1/30/30		27,000		26,604
Cooperatieve Rabobank UA 1 yr. CMT + 0.550%
1.106% VRN 2/24/27 (b)		250,000		232,205
Fifth Third Bancorp
1 day USD SOFR + 1.840% 5.631% VRN 1/29/32		28,000		27,756
1 day USD SOFR + 2.340% 6.339% VRN 7/27/29		14,000		14,351
Goldman Sachs Group, Inc.
1 day USD SOFR + 0.798% 1.431% VRN 3/09/27		227,000		211,812
4.250% 10/21/25		32,000		31,439
1 day USD SOFR + 1.552% 5.851% VRN 4/25/35		63,000		64,533
5.950% 1/15/27		72,000		73,217
6.750% 10/01/37		32,000		34,523
Huntington Bancshares, Inc. 1 day USD SOFR + 2.020%
6.208% VRN 8/21/29		29,000		29,610
JP Morgan Chase & Co.
3 mo. USD Term SOFR + 1.422% 3.702% VRN 5/06/30		160,000		149,605
1 day USD SOFR + 1.845% 5.350% VRN 6/01/34		53,000		52,765
5.600% 7/15/41		41,000		41,701
Mizuho Financial Group, Inc.
2.564% 9/13/31		200,000		162,733
Morgan Stanley
1 day USD SOFR + 1.485% 3.217% VRN 4/22/42		44,000		32,934
3 mo. USD Term SOFR + 1.890% 4.431% VRN 1/23/30		79,000		76,424
1 day USD SOFR + 1.870% 5.250% VRN 4/21/34		73,000		71,858
PNC Financial Services Group, Inc.
1 day USD SOFR + 1.933% 5.068% VRN 1/24/34		54,000		52,194
1 day USD SOFR + 1.841% 5.582% VRN 6/12/29		85,000		85,930

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Truist Financial Corp. 1 day USD SOFR + 1.620%
5.435% VRN 1/24/30	$	40,000	$	39,896
US Bancorp
1 day USD SOFR + 1.600% 4.839% VRN 2/01/34		79,000		74,895
1 day USD SOFR + 2.020% 5.775% VRN 6/12/29		66,000		66,999
Wells Fargo & Co.
1 day USD SOFR + 2.020% 5.389% VRN 4/24/34		67,000		66,234
1 day USD SOFR + 1.990% 5.557% VRN 7/25/34		54,000		53,960
5 yr. CMT + 3.606% 7.625% VRN (c)		30,000		31,947
				2,940,100
Biotechnology — 0.4%
Amgen, Inc.
2.200% 2/21/27		347,000		321,887
5.250% 3/02/33		54,000		53,843
5.650% 3/02/53		36,000		35,454
				411,184
Building Materials — 0.0%
Carrier Global Corp.
6.200% 3/15/54		19,000		20,342
Commercial Services — 0.3%
ERAC USA Finance LLC
5.000% 2/15/29 (b)		42,000		41,888
Moody's Corp.
4.250% 2/01/29		209,000		203,278
PayPal Holdings, Inc.
3.250% 6/01/50		27,000		18,280
Triton Container International Ltd.
3.150% 6/15/31 (b)		100,000		83,115
				346,561
Computers — 0.2%
Apple, Inc.
2.650% 5/11/50		27,000		17,232
3.000% 6/20/27		177,000		168,591
				185,823
Diversified Financial Services — 0.6%
Air Lease Corp.
2.200% 1/15/27		64,000		59,083
Brookfield Finance, Inc.
3.900% 1/25/28		99,000		94,480
Charles Schwab Corp.
10 yr. CMT + 3.079% 4.000% VRN (c)		93,000		79,423
5.875% 8/24/26		115,000		116,322
LPL Holdings, Inc.
6.000% 5/20/34		48,000		47,928
LSEGA Financing PLC
1.375% 4/06/26 (b)		218,000		203,344
				600,580

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Electric — 0.1%
MidAmerican Energy Co.
5.300% 2/01/55	$	20,000	$	19,035
Nevada Power Co.
6.650% 4/01/36		20,000		21,529
Xcel Energy, Inc.
6.500% 7/01/36		99,000		103,486
				144,050
Entertainment — 0.0%
Warnermedia Holdings, Inc.
5.141% 3/15/52		49,000		38,152
Environmental Controls — 0.0%
Republic Services, Inc.
5.000% 4/01/34		28,000		27,406
Food — 0.3%
Conagra Brands, Inc.
4.850% 11/01/28		170,000		167,078
General Mills, Inc.
3.000% 2/01/51		112,000		71,289
Ingredion, Inc.
3.200% 10/01/26		25,000		23,874
Mars, Inc.
3.950% 4/01/49 (b)		67,000		53,111
				315,352
Health Care - Services — 0.5%
Humana, Inc.
5.950% 3/15/34		123,000		125,737
Kaiser Foundation Hospitals
2.810% 6/01/41		110,000		79,531
3.002% 6/01/51		80,000		53,320
Mayo Clinic
3.196% 11/15/61		106,000		70,899
Providence St. Joseph Health Obligated Group
2.700% 10/01/51		93,000		55,087
Quest Diagnostics, Inc.
6.400% 11/30/33		47,000		50,309
UnitedHealth Group, Inc.
3.125% 5/15/60		36,000		22,696
5.050% 4/15/53		20,000		18,525
5.875% 2/15/53		25,000		25,963
				502,067
Insurance — 0.8%
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48		104,000		101,830
Arch Capital Finance LLC
5.031% 12/15/46		27,000		24,455
Arch Capital Group Ltd.
3.635% 6/30/50		49,000		35,288
Athene Holding Ltd.
3.950% 5/25/51		16,000		11,442
6.250% 4/01/54		37,000		37,024

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Brighthouse Financial, Inc.
3.850% 12/22/51	$	68,000	$	43,237
GA Global Funding Trust
1.625% 1/15/26 (b)		37,000		34,791
Jackson Financial, Inc.
5.170% 6/08/27		78,000		77,754
Marsh & McLennan Cos., Inc.
5.450% 3/15/53		16,000		15,565
5.700% 9/15/53		42,000		42,422
New York Life Global Funding
4.550% 1/28/33 (b)		47,000		44,692
New York Life Insurance Co.
3.750% 5/15/50 (b)		23,000		17,172
Pacific Life Global Funding II
5.500% 8/28/26 (b)		64,000		64,284
Prudential Financial, Inc.
5 yr. CMT + 3.035% 3.700% VRN 10/01/50		18,000		15,657
3 mo. USD LIBOR + 2.665% 5.700% VRN 9/15/48		99,000		97,132
Reinsurance Group of America, Inc.
3.150% 6/15/30		49,000		43,585
3.900% 5/15/29		54,000		50,617
USF&G Capital I
8.500% 12/15/45 (b)		35,000		35,077
				792,024
Internet — 0.0%
Alphabet, Inc.
2.250% 8/15/60		32,000		17,713
Investment Companies — 0.2%
Blackstone Secured Lending Fund
2.750% 9/16/26		158,000		146,268
Machinery - Diversified — 0.0%
AGCO Corp.
5.450% 3/21/27		18,000		18,043
5.800% 3/21/34		23,000		22,910
				40,953
Media — 0.2%
Charter Communications Operating LLC/Charter Communications Operating Capital
3.850% 4/01/61		46,000		26,860
6.484% 10/23/45		32,000		29,228
Comcast Corp.
2.937% 11/01/56		43,000		25,938
3.400% 7/15/46		41,000		29,653
3.969% 11/01/47		23,000		17,939
Discovery Communications LLC
3.950% 3/20/28		56,000		52,336
Time Warner Cable LLC
6.750% 6/15/39		27,000		26,119
				208,073
Oil & Gas — 0.1%
BP Capital Markets America, Inc.
3.379% 2/08/61		95,000		62,365

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
BP Capital Markets PLC 5 yr. CMT + 4.036%
4.375% VRN (c)	$	12,000	$	11,764
				74,129
Packaging & Containers — 0.3%
Berry Global, Inc.
1.570% 1/15/26		48,000		45,097
Silgan Holdings, Inc.
1.400% 4/01/26 (b)		49,000		45,434
WRKCo, Inc.
3.000% 6/15/33		27,000		22,701
4.650% 3/15/26		192,000		189,196
				302,428
Pharmaceuticals — 0.6%
AbbVie, Inc.
4.700% 5/14/45		67,000		60,521
5.050% 3/15/34		68,000		67,801
5.400% 3/15/54		45,000		44,497
Astrazeneca Finance LLC
5.000% 2/26/34		58,000		57,679
Bristol-Myers Squibb Co.
4.350% 11/15/47		27,000		22,493
6.250% 11/15/53		28,000		30,073
Cigna Group
4.800% 7/15/46		27,000		23,742
CVS Health Corp.
5.875% 6/01/53		17,000		16,290
6.125% 9/15/39		8,000		8,000
Eli Lilly & Co.
4.950% 2/27/63		33,000		30,674
Merck & Co., Inc.
5.000% 5/17/53		81,000		76,167
Pfizer Investment Enterprises Pte. Ltd.
4.450% 5/19/28		93,000		91,372
4.750% 5/19/33		61,000		59,433
				588,742
Pipelines — 0.8%
Enterprise Products Operating LLC
3 mo. USD Term SOFR + 3.295% 5.250% VRN 8/16/77		41,000		39,209
3 mo. USD Term SOFR + 2.832% 5.375% VRN 2/15/78		27,000		25,219
Kinder Morgan, Inc.
3.250% 8/01/50		50,000		31,878
MPLX LP
1.750% 3/01/26		365,000		342,994
4.500% 4/15/38		27,000		23,543
5.650% 3/01/53		7,000		6,586
ONEOK, Inc.
6.350% 1/15/31		200,000		209,445
6.625% 9/01/53		46,000		49,088
Sabine Pass Liquefaction LLC
4.500% 5/15/30		100,000		95,933

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Williams Cos., Inc.
3.500% 10/15/51	$	45,000	$	31,130
				855,025
Real Estate — 0.1%
CBRE Services, Inc.
2.500% 4/01/31		121,000		100,516
Real Estate Investment Trusts (REITS) — 1.0%
Alexandria Real Estate Equities, Inc.
2.950% 3/15/34		78,000		63,171
5.150% 4/15/53		20,000		17,581
American Tower Corp.
1.600% 4/15/26		96,000		89,613
Brixmor Operating Partnership LP
2.250% 4/01/28		24,000		21,414
Crown Castle, Inc.
2.500% 7/15/31		88,000		72,711
3.700% 6/15/26		243,000		234,831
5.200% 2/15/49		11,000		9,968
Extra Space Storage LP
2.350% 3/15/32		65,000		51,778
Host Hotels & Resorts LP
3.500% 9/15/30		84,000		74,228
Kimco Realty OP LLC
2.250% 12/01/31		58,000		46,551
Kite Realty Group LP
4.000% 10/01/26		110,000		106,409
Mid-America Apartments LP
5.300% 2/15/32		68,000		67,701
NNN REIT, Inc.
5.600% 10/15/33		40,000		39,799
Piedmont Operating Partnership LP
6.875% 7/15/29		23,000		22,724
Prologis LP
4.875% 6/15/28		75,000		74,633
Public Storage Operating Co.
5.350% 8/01/53		14,000		13,503
Realty Income Corp.
4.850% 3/15/30		30,000		29,402
Regency Centers LP
5.250% 1/15/34		25,000		24,348
				1,060,365
Retail — 0.3%
Home Depot, Inc.
2.375% 3/15/51		48,000		27,564
McDonald's Corp.
3.300% 7/01/25		100,000		97,907
5.450% 8/14/53		51,000		49,260
Starbucks Corp.
4.450% 8/15/49		86,000		70,782
Walmart, Inc.
4.500% 4/15/53		67,000		59,303
				304,816

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Semiconductors — 0.2%
Micron Technology, Inc.
4.185% 2/15/27	$	200,000	$	194,376
5.300% 1/15/31		33,000		32,926
				227,302
Software — 0.4%
Electronic Arts, Inc.
2.950% 2/15/51		42,000		27,204
Fiserv, Inc.
5.450% 3/15/34		86,000		85,461
Intuit, Inc.
5.500% 9/15/53		48,000		48,228
Microsoft Corp.
2.921% 3/17/52		80,000		54,308
Oracle Corp.
3.600% 4/01/40		197,000		151,417
5.550% 2/06/53		15,000		14,192
6.900% 11/09/52		53,000		59,323
				440,133
Telecommunications — 0.4%
Cisco Systems, Inc.
5.050% 2/26/34		36,000		35,973
T-Mobile USA, Inc.
5.050% 7/15/33		80,000		78,265
5.500% 1/15/55		36,000		34,715
6.000% 6/15/54		16,000		16,544
Verizon Communications, Inc.
3.700% 3/22/61		47,000		33,162
3.875% 2/08/29		180,000		171,080
				369,739
Transportation — 0.0%
CSX Corp.
4.750% 11/15/48		18,000		16,063
TOTAL CORPORATE DEBT (Cost $12,804,118)				11,421,607
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 3.6%
Automobile Asset-Backed Securities — 0.7%
Avis Budget Rental Car Funding AESOP LLC, Series 2021-2A, Class A
1.660% 2/20/28 (b)		150,000		137,266
Enterprise Fleet Financing LLC, Series 2021-3, Class A3
1.220% 8/20/27 (b)		234,000		225,871
Fifth Third Auto Trust, Series 2023-1, Class A3
5.530% 8/15/28		131,000		131,460
Hyundai Auto Receivables Trust, Series 2021-C, Class A4
1.030% 12/15/27		140,000		133,407
Toyota Auto Receivables Owner Trust, Series 2021-D, Class A4
1.020% 3/15/27		70,000		66,128
				694,132

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Commercial Mortgage-Backed Securities — 1.0%
Bank
Series 2019-BN17, Class B, 4.128% VRN 4/15/52 (d)	$	29,000	$	25,500
Series 2019-BN16, Class AS, 4.267% 2/15/52		31,333		28,879
Series 2019-BN16, Class B, 4.438% VRN 2/15/52 (d)		24,330		21,651
BBCMS Mortgage Trust, Series 2020-C7, Class AS
2.444% 4/15/53		57,000		45,637
Benchmark Mortgage Trust, Series 2019-B9, Class AAB
3.933% 3/15/52		247,417		238,870
BX Commercial Mortgage Trust
Series 2021-VOLT, Class A, 1 mo. USD Term SOFR + 0.814% 6.143% FRN 9/15/36 (b)		115,000		113,567
Series 2021-VOLT , Class C, 1 mo. USD Term SOFR + 1.214% 6.543% FRN 9/15/36 (b)		100,000		97,937
Citigroup Commercial Mortgage Trust, Series 2017-C4, Class C,
4.284% VRN 10/12/50 (d)		70,000		61,808
GS Mortgage Securities Trust, Series 2020-GC45, Class A5
2.911% 2/13/53		140,000		123,431
Life Mortgage Trust
Series 2021-BMR , Class A, 1 mo. USD Term SOFR + 0.814% 6.144% FRN 3/15/38 (b)		98,297		96,515
Series 2021-BMR , Class B, 1 mo. USD Term SOFR + 0.994% 6.324% FRN 3/15/38 (b)		98,297		95,962
Morgan Stanley Capital I Trust, Series 2018-H3, Class B,
4.620% VRN 7/15/51 (d)		20,000		18,161
Wells Fargo Commercial Mortgage Trust
Series 2018-C45, Class AS, 4.405% VRN 6/15/51 (d)		30,000		28,074
Series 2018-C45, Class B, 4.556% 6/16/51		10,000		9,085
				1,005,077
Other Asset-Backed Securities — 0.4%
AMSR Trust, Series 2021-SFR3, Class B
1.726% 10/17/38 (b)		130,000		117,833
Dllmt LLC, Series 2021-1A, Class A4
1.240% 6/20/29 (b)		150,000		145,173
MVW LLC, Series 2021-2A, Class A
1.430% 5/20/39 (b)		123,030		113,610
Progress Residential Trust, Series 2021-SFR10, Class A
2.393% 12/17/40 (b)		96,494		85,402
				462,018
Whole Loan Collateral Collateralized Mortgage Obligations — 1.5%
Angel Oak Mortgage Trust
Series 2021-8, Class A1, 1.820% VRN 11/25/66 (b) (d)		195,655		167,677
Series 2022-1, Class A1, 2.881% STEP 12/25/66 (b)		214,650		195,023
Bayview MSR Opportunity Master Fund Trust
Series 2021-5, Class A2, 2.500% VRN 11/25/51 (b) (d)		120,338		95,754
Series 2021-5, Class A1, 3.000% VRN 11/25/51 (b) (d)		98,690		81,886
Ellington Financial Mortgage Trust, Series 2022-3, Class A1,
5.000% STEP 8/25/67 (b)		191,934		189,954
Flagstar Mortgage Trust, Series 2021-11IN, Class A6,
2.500% VRN 11/25/51 (b) (d)		202,902		173,772
JP Morgan Mortgage Trust, Series 2022-8, Class A4A,
4.000% VRN 1/25/53 (b) (d)		135,637		123,895
OBX Trust, Series 2022-NQM1, Class A1,
2.305% VRN 11/25/61 (b) (d)		200,255		173,495

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Starwood Mortgage Residential Trust
Series 2021-6, Class A1, 1.920% VRN 11/25/66 (b) (d)	$	220,441	$	187,371
Series 2022-1, Class A1, 2.447% VRN 12/25/66 (b) (d)		240,872		208,033
				1,596,860
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $4,158,912)				3,758,087
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 9.4%
Pass-Through Securities — 9.4%
Federal Home Loan Mortgage Corp.
Pool #SD8212 2.500% 5/01/52		709,796		580,733
Pool #SD8174 3.000% 10/01/51		377,020		322,373
Pool #RA7484 4.000% 6/01/52		419,514		385,137
Pool #SD1351 4.500% 7/01/52		355,902		336,853
Pool #SD1628 5.000% 9/01/52		377,859		366,755
Pool #SD3386 5.500% 7/01/53		287,353		283,815
Pool #SD5060 5.500% 3/01/54		289,228		286,390
Federal National Mortgage Association
Pool #CB1787 2.000% 10/01/51		458,759		359,653
Pool #CB1782 2.000% 10/01/51		704,261		553,439
Pool #MA4437 2.000% 10/01/51		466,744		365,912
Pool #MA4562 2.000% 3/01/52		444,498		348,194
Pool #MA4361 2.500% 6/01/36		255,283		230,891
Pool #CB2074 2.500% 11/01/51		355,472		292,669
Pool #FS2635 2.500% 5/01/52		427,186		352,981
Pool #BO7245 3.000% 1/01/50		263,464		227,385
Pool #FS2600 3.000% 5/01/52		444,634		382,217
Pool #BU8819 3.500% 5/01/52		439,755		390,973
Pool #CB4891 4.500% 10/01/52		95,425		90,049
Pool #CB4404 5.000% 8/01/52		360,842		350,238
Pool #CB7859 5.500% 1/01/54		583,837		576,648
Government National Mortgage Association II, TBA 6.000% 7/20/54 (f)		375,000		376,611
Uniform Mortgage-Backed Security, TBA
2.000% 7/01/39 (f)		1,500,000		1,318,476
3.000% 8/01/54 (f)		200,000		172,891
3.500% 7/01/54 (f)		500,000		442,539
6.000% 7/01/54 (f)		375,000		376,055
				9,769,877
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $10,441,886)				9,769,877
U.S. TREASURY OBLIGATIONS — 12.4%
U.S. Treasury Bonds & Notes — 12.4%
U.S. Treasury Bonds
2.250% 8/15/49		839,900		542,719
4.250% 2/15/54		861,600		820,405
4.625% 5/15/44		1,369,200		1,366,413
4.750% 11/15/43		100,000		101,323
U.S. Treasury Notes
2.750% 4/30/27		1,150,000		1,095,448
2.875% 4/30/29		1,050,000		981,713
3.500% 2/15/33		535,000		501,277

MassMutual Balanced Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
4.250% 2/28/31	$	127,000	$	126,163
4.250% 6/30/31		150,000		149,133
4.375% 5/15/34		1,672,100		1,672,623
4.500% 5/31/29		1,051,700		1,058,690
4.500% 11/15/33		431,000		434,961
4.625% 6/15/27		1,194,400		1,197,719
4.625% 9/30/30		1,175,000		1,191,340
4.625% 5/31/31		1,182,400		1,201,254
4.875% 5/31/26		441,600		442,444
				12,883,625
TOTAL U.S. TREASURY OBLIGATIONS (Cost $13,308,576)				12,883,625
TOTAL BONDS & NOTES (Cost $40,713,492)				37,833,196
TOTAL LONG-TERM INVESTMENTS (Cost $95,220,037)				104,810,642
SHORT-TERM INVESTMENTS — 1.2%
Repurchase Agreement — 1.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (g)		1,177,221		1,177,221
U.S. Treasury Bill — 0.1%
U.S. Treasury Bills
5.343% 9/05/24 (h) (i)		55,000		54,474
TOTAL SHORT-TERM INVESTMENTS (Cost $1,231,685)				1,231,695
TOTAL INVESTMENTS — 102.1% (Cost $96,451,722) (j)				106,042,337
Other Assets/(Liabilities) — (2.1)%				(2,207,112)
NET ASSETS — 100.0%			$	103,835,225

Abbreviation Legend

ADR American Depositary Receipt

CMT Constant Maturity Treasury Index

FRN Floating Rate Note

LIBOR London InterBank Offered Rate

SOFR Secured Overnight Financing Rate

STEP Step Coupon 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, 2024, the aggregate market value of these securities amounted to $3,906,835 or 3.76% 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, 2024.

(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 $1,177,377. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $1,200,866.

(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	9/30/24		4	$	814,696	$	2,179
U.S. Treasury Note 5 Year	9/30/24		4		423,509		2,804
						$	4,983
Short
U.S. Treasury Note 10 Year	9/19/24		8	$	(870,483)	$	(9,392)
U.S. Treasury Ultra 10 Year	9/19/24		9		(1,012,480)		(9,301)
						$	(18,693)

MassMutual Disciplined Value Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.7%
COMMON STOCK — 99.7%
Communication Services — 4.7%
Comcast Corp. Class A		15,055	$	589,554
Fox Corp. Class A		11,763		404,294
Omnicom Group, Inc.		2,196		196,981
Paramount Global Class B		9,012		93,635
Roku, Inc. (a)		637		38,175
Walt Disney Co.		3,781		375,415
Warner Bros Discovery, Inc. (a)		14,758		109,800
				1,807,854
Consumer Discretionary — 5.5%
BorgWarner, Inc.		1,190		38,366
DoorDash, Inc., Class A (a)		355		38,617
DR Horton, Inc.		1,379		194,342
Ford Motor Co.		4,270		53,546
General Motors Co.		4,709		218,780
Genuine Parts Co.		1,727		238,879
McDonald's Corp.		1,619		412,586
NVR, Inc. (a)		35		265,600
Polaris, Inc.		1,456		114,019
PulteGroup, Inc.		2,664		293,306
Tapestry, Inc.		1,245		53,273
TopBuild Corp. (a)		514		198,029
				2,119,343
Consumer Staples — 8.5%
Campbell Soup Co.		3,063		138,417
Church & Dwight Co., Inc.		577		59,823
Colgate-Palmolive Co.		1,327		128,772
General Mills, Inc.		2,172		137,401
Hershey Co.		243		44,671
J. M. Smucker Co.		614		66,951
Kimberly-Clark Corp.		1,137		157,133
Kraft Heinz Co.		1,199		38,632
Lamb Weston Holdings, Inc.		1,791		150,587
Mondelez International, Inc. Class A		4,390		287,282
PepsiCo, Inc.		2,536		418,262
Philip Morris International, Inc.		1,857		188,170
Pilgrim's Pride Corp. (a)		2,670		102,768
Procter & Gamble Co.		2,998		494,430
Walmart, Inc.		12,970		878,199
				3,291,498
Energy — 6.8%
APA Corp.		2,590		76,250

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Chevron Corp.		3,825	$	598,306
ConocoPhillips		2,217		253,580
Coterra Energy, Inc.		2,111		56,300
Devon Energy Corp.		2,440		115,656
Exxon Mobil Corp.		7,748		891,950
HF Sinclair Corp.		725		38,672
Marathon Petroleum Corp.		1,039		180,246
ONEOK, Inc.		1,840		150,052
Ovintiv, Inc.		2,064		96,740
Valero Energy Corp.		1,032		161,776
				2,619,528
Financials — 23.8%
Affiliated Managers Group, Inc.		1,196		186,851
Aflac, Inc.		5,234		467,449
Arthur J Gallagher & Co.		1,545		400,634
Assurant, Inc.		394		65,503
Bank of America Corp.		8,404		334,227
Bank of New York Mellon Corp.		7,705		461,452
Bank OZK		5,614		230,174
Berkshire Hathaway, Inc. Class B (a)		3,988		1,622,318
BlackRock, Inc.		673		529,866
Block, Inc. (a)		1,319		85,062
Brighthouse Financial, Inc. (a)		2,727		118,188
Brown & Brown, Inc.		4,519		404,044
Capital One Financial Corp.		279		38,628
Cboe Global Markets, Inc.		1,514		257,471
Citigroup, Inc.		1,906		120,955
CME Group, Inc.		2,466		484,816
Coinbase Global, Inc. Class A (a)		371		82,447
East West Bancorp, Inc.		1,479		108,307
First Citizens BancShares, Inc. Class A		34		57,243
Global Payments, Inc.		758		73,299
Interactive Brokers Group, Inc. Class A		1,268		155,457
JP Morgan Chase & Co.		6,625		1,339,973
MGIC Investment Corp.		2,391		51,526
Primerica, Inc.		356		84,222
Progressive Corp.		1,629		338,360
Robinhood Markets, Inc. Class A (a)		2,131		48,395
State Street Corp.		3,670		271,580
Synchrony Financial		3,833		180,879
T. Rowe Price Group, Inc.		3,700		426,647
Tradeweb Markets, Inc. Class A		381		40,386
Wells Fargo & Co.		1,383		82,136
Western Union Co.		5,393		65,902
				9,214,397
Health Care — 15.1%
Amgen, Inc.		1,048		327,447
Bio-Rad Laboratories, Inc. Class A (a)		422		115,252
Cardinal Health, Inc.		443		43,556
The Cooper Cos., Inc.		1,722		150,331
Elevance Health, Inc.		951		515,309
Exelixis, Inc. (a)		14,649		329,163
Gilead Sciences, Inc.		3,942		270,461
Globus Medical, Inc. Class A (a)		3,122		213,826
Hologic, Inc. (a)		695		51,604

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Illumina, Inc. (a)		1,732	$	180,786
Incyte Corp. (a)		3,452		209,260
Jazz Pharmaceuticals PLC (a)		3,676		392,339
Johnson & Johnson		6,823		997,250
McKesson Corp.		94		54,900
Medtronic PLC		4,077		320,901
Molina Healthcare, Inc. (a)		318		94,541
Premier, Inc. Class A		2,074		38,721
Quest Diagnostics, Inc.		299		40,927
Solventum Corp. (a)		1,118		59,120
Stryker Corp.		995		338,549
United Therapeutics Corp. (a)		934		297,526
UnitedHealth Group, Inc.		1,215		618,751
Zimmer Biomet Holdings, Inc.		1,713		185,912
				5,846,432
Industrials — 11.7%
Acuity Brands, Inc.		195		47,081
Allison Transmission Holdings, Inc.		1,065		80,833
AMETEK, Inc.		1,008		168,044
Builders FirstSource, Inc. (a)		283		39,170
Caterpillar, Inc.		1,032		343,759
Cummins, Inc.		158		43,755
Curtiss-Wright Corp.		312		84,546
Eaton Corp. PLC		1,079		338,320
EMCOR Group, Inc.		1,099		401,223
Emerson Electric Co.		2,249		247,750
General Dynamics Corp.		398		115,476
Honeywell International, Inc.		471		100,577
Hubbell, Inc.		822		300,425
Ingersoll Rand, Inc.		844		76,669
Leidos Holdings, Inc.		429		62,582
Middleby Corp. (a)		958		117,460
MSA Safety, Inc.		382		71,698
MSC Industrial Direct Co., Inc. Class A		561		44,493
nVent Electric PLC		4,760		364,664
Oshkosh Corp.		1,264		136,765
PACCAR, Inc.		4,257		438,216
RTX Corp.		2,420		242,944
Snap-on, Inc.		609		159,186
Timken Co.		703		56,331
TransDigm Group, Inc.		123		157,146
United Rentals, Inc.		359		232,176
WESCO International, Inc.		485		76,882
				4,548,171
Information Technology — 9.9%
Amdocs Ltd.		2,200		173,624
Applied Materials, Inc.		1,740		410,623
Arrow Electronics, Inc. (a)		331		39,971
Avnet, Inc.		1,430		73,631
Cisco Systems, Inc.		6,135		291,474
Cognizant Technology Solutions Corp. Class A		3,392		230,656
DXC Technology Co. (a)		2,685		51,257
F5, Inc. (a)		223		38,407
First Solar, Inc. (a)		289		65,158
Hewlett Packard Enterprise Co.		15,011		317,783

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
HP, Inc.		7,352	$	257,467
Intel Corp.		8,070		249,928
International Business Machines Corp.		1,629		281,735
Kyndryl Holdings, Inc. (a)		1,865		49,068
Micron Technology, Inc.		2,599		341,846
Roper Technologies, Inc.		855		481,929
TD SYNNEX Corp.		2,557		295,078
Western Digital Corp. (a)		1,536		116,383
Zoom Video Communications, Inc. Class A (a)		974		57,651
				3,823,669
Materials — 4.6%
AptarGroup, Inc.		1,382		194,599
Ecolab, Inc.		1,209		287,742
LyondellBasell Industries NV Class A		1,077		103,026
Mosaic Co.		2,521		72,857
Newmont Corp. (NEM US)		5,178		216,803
Nucor Corp.		589		93,109
PPG Industries, Inc.		3,452		434,572
RPM International, Inc.		534		57,501
Sonoco Products Co.		3,010		152,667
Steel Dynamics, Inc.		873		113,054
Westrock Co.		862		43,324
				1,769,254
Real Estate — 7.6%
Agree Realty Corp.		6,446		399,265
Brixmor Property Group, Inc.		6,618		152,810
Healthcare Realty Trust, Inc.		6,548		107,911
Highwoods Properties, Inc.		7,227		189,853
Kimco Realty Corp.		8,124		158,093
Mid-America Apartment Communities, Inc.		2,928		417,562
National Storage Affiliates Trust		3,161		130,296
Omega Healthcare Investors, Inc.		1,248		42,744
Realty Income Corp.		8,481		447,967
Regency Centers Corp.		2,511		156,184
SBA Communications Corp.		2,144		420,867
STAG Industrial, Inc.		7,642		275,571
WP Carey, Inc.		790		43,490
				2,942,613
Utilities — 1.5%
Constellation Energy Corp.		1,590		318,429
National Fuel Gas Co.		4,868		263,797
				582,226
TOTAL COMMON STOCK (Cost $34,376,608)				38,564,985
TOTAL EQUITIES (Cost $34,376,608)				38,564,985
TOTAL LONG-TERM INVESTMENTS (Cost $34,376,608)				38,564,985

MassMutual Disciplined Value Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
SHORT-TERM INVESTMENTS — 0.7%
Investment of Cash Collateral from Securities Loaned — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (b)		50,058	$	50,058
	Principal Amount
Repurchase Agreement — 0.6%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (c)	$	218,422		218,422
TOTAL SHORT-TERM INVESTMENTS (Cost $268,480)				268,480
TOTAL INVESTMENTS — 100.4% (Cost $34,645,088) (d)				38,833,465
Other Assets/(Liabilities) — (0.4)%				(146,284)
NET ASSETS — 100.0%			$	38,687,181

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

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

(c) Maturity value of $218,451. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $222,940.

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

MassMutual Main Street Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.3%
COMMON STOCK — 99.3%
Communication Services — 11.1%
Alphabet, Inc. Class A		18,301	$	3,333,527
Meta Platforms, Inc. Class A		3,968		2,000,745
T-Mobile US, Inc.		2,521		444,150
Verizon Communications, Inc.		30,679		1,265,202
Walt Disney Co.		6,072		602,889
				7,646,513
Consumer Discretionary — 6.6%
Amazon.com, Inc. (a)		15,339		2,964,262
Aptiv PLC (a)		4,834		340,410
Mobileye Global, Inc. Class A (a) (b)		10,663		299,470
Tesla, Inc. (a)		1,377		272,481
Valvoline, Inc. (a)		15,649		676,037
				4,552,660
Consumer Staples — 6.5%
Constellation Brands, Inc. Class A		5,318		1,368,215
Coty, Inc. Class A (a)		30,961		310,229
Philip Morris International, Inc.		16,792		1,701,534
Walmart, Inc.		15,806		1,070,224
				4,450,202
Energy — 3.9%
Chevron Corp.		2,868		448,612
Exxon Mobil Corp.		16,094		1,852,741
Marathon Oil Corp.		13,143		376,810
				2,678,163
Financials — 13.9%
American Express Co.		5,582		1,292,512
American International Group, Inc.		15,079		1,119,465
Ares Management Corp. Class A		2,079		277,089
Arthur J Gallagher & Co.		1,741		451,459
Charles Schwab Corp.		13,931		1,026,575
Equitable Holdings, Inc.		23,810		972,877
Fiserv, Inc. (a)		6,810		1,014,962
JP Morgan Chase & Co.		8,690		1,757,640
Mastercard, Inc. Class A		2,056		907,025
Wells Fargo & Co.		12,660		751,877
				9,571,481
Health Care — 14.3%
Becton Dickinson & Co.		3,783		884,125

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Boston Scientific Corp. (a)		9,989	$	769,253
The Cooper Cos., Inc.		4,108		358,628
Eli Lilly & Co.		1,540		1,394,285
Gilead Sciences, Inc.		6,736		462,157
HCA Healthcare, Inc.		2,444		785,208
Lonza Group AG Registered		1,282		696,709
Merck & Co., Inc.		9,225		1,142,055
Tenet Healthcare Corp. (a)		5,024		668,343
UnitedHealth Group, Inc.		3,205		1,632,178
Zimmer Biomet Holdings, Inc.		9,899		1,074,339
				9,867,280
Industrials — 8.3%
AerCap Holdings NV		3,711		345,865
Emerson Electric Co.		9,015		993,092
Equifax, Inc.		3,486		845,216
Hubbell, Inc.		2,122		775,549
Huntington Ingalls Industries, Inc.		1,585		390,433
Otis Worldwide Corp.		5,209		501,418
Rockwell Automation, Inc.		808		222,426
Uber Technologies, Inc. (a)		10,911		793,011
United Parcel Service, Inc. Class B		6,495		888,841
				5,755,851
Information Technology — 30.0%
Amdocs Ltd.		6,771		534,367
Apple, Inc.		18,059		3,803,587
Applied Materials, Inc.		6,259		1,477,061
Broadcom, Inc.		382		613,313
Dell Technologies, Inc. Class C		2,391		329,743
Microsoft Corp.		12,932		5,779,957
MongoDB, Inc. (a)		1,231		307,701
NVIDIA Corp.		41,830		5,167,678
ServiceNow, Inc. (a)		1,515		1,191,805
Texas Instruments, Inc.		3,467		674,436
Tyler Technologies, Inc. (a)		1,571		789,867
				20,669,515
Materials — 1.6%
CRH PLC		4,520		338,910
DuPont de Nemours, Inc.		9,344		752,098
				1,091,008
Real Estate — 1.5%
Prologis, Inc.		9,157		1,028,423
Utilities — 1.6%
Ameren Corp.		3,100		220,441
Atmos Energy Corp.		4,765		555,837

MassMutual Main Street Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
FirstEnergy Corp.		8,561	$	327,630
				1,103,908
TOTAL COMMON STOCK (Cost $50,058,854)				68,415,004
TOTAL EQUITIES (Cost $50,058,854)				68,415,004
TOTAL LONG-TERM INVESTMENTS (Cost $50,058,854)				68,415,004
	Principal Amount
SHORT-TERM INVESTMENTS — 0.7%
Repurchase Agreement — 0.7%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (c)	$	487,029		487,029
TOTAL SHORT-TERM INVESTMENTS (Cost $487,029)				487,029
TOTAL INVESTMENTS — 100.0% (Cost $50,545,883) (d)				68,902,033
Other Assets/(Liabilities) — 0.0%				22,015
NET ASSETS — 100.0%			$	68,924,048

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, 2024, was $296,465 or 0.43% of net assets. The Fund received $304,992 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 $487,094. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $496,870.

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

MassMutual Disciplined Growth Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.4%
COMMON STOCK — 98.4%
Communication Services — 14.3%
Alphabet, Inc. Class A		42,737	$	7,784,545
Alphabet, Inc. Class C		43,232		7,929,613
Meta Platforms, Inc. Class A		18,498		9,327,062
Netflix, Inc. (a)		2,788		1,881,565
Spotify Technology SA (a)		4,122		1,293,442
				28,216,227
Consumer Discretionary — 13.6%
Airbnb, Inc. Class A (a)		2,132		323,275
Amazon.com, Inc. (a)		74,943		14,482,735
AutoZone, Inc. (a)		221		655,066
Booking Holdings, Inc.		324		1,283,526
Deckers Outdoor Corp. (a)		1,624		1,571,951
DraftKings, Inc. Class A (a)		981		37,445
Grand Canyon Education, Inc. (a)		1,515		211,964
Home Depot, Inc.		2,264		779,359
Lululemon Athletica, Inc. (a)		6,406		1,913,472
Tesla, Inc. (a)		10,787		2,134,531
TopBuild Corp. (a)		5,158		1,987,223
Ulta Beauty, Inc. (a)		1,351		521,310
Wingstop, Inc.		1,001		423,083
YETI Holdings, Inc. (a)		15,548		593,156
				26,918,096
Consumer Staples — 2.3%
Costco Wholesale Corp.		1,881		1,598,831
Monster Beverage Corp. (a)		14,547		726,623
PepsiCo, Inc.		10,115		1,668,267
Procter & Gamble Co.		3,907		644,342
				4,638,063
Financials — 7.6%
Arthur J Gallagher & Co.		3,188		826,680
Block, Inc. (a)		11,528		743,441
Brown & Brown, Inc.		22,229		1,987,495
Corpay, Inc. (a)		996		265,344
Fiserv, Inc. (a)		2,410		359,186
Marsh & McLennan Cos., Inc.		2,166		456,420
Mastercard, Inc. Class A		7,868		3,471,047
NU Holdings Ltd. Class A (a)		18,541		238,993
Progressive Corp.		8,653		1,797,315
Toast, Inc., Class A (a)		11,058		284,965

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Visa, Inc. Class A		17,491	$	4,590,863
				15,021,749
Health Care — 10.5%
AbbVie, Inc.		1,001		171,692
Apellis Pharmaceuticals, Inc. (a)		5,626		215,813
Cencora, Inc.		3,676		828,203
Doximity, Inc. Class A (a)		23,675		662,190
Elevance Health, Inc.		2,692		1,458,687
Eli Lilly & Co.		4,038		3,655,924
Exelixis, Inc. (a)		49,776		1,118,467
Incyte Corp. (a)		31,864		1,931,596
Medpace Holdings, Inc. (a)		565		232,695
Merck & Co., Inc.		17,249		2,135,426
Molina Healthcare, Inc. (a)		1,356		403,139
Neurocrine Biosciences, Inc. (a)		3,568		491,207
Regeneron Pharmaceuticals, Inc. (a)		1,023		1,075,204
ResMed, Inc.		9,927		1,900,226
Sarepta Therapeutics, Inc. (a)		1,538		243,004
UnitedHealth Group, Inc.		4,225		2,151,623
Vertex Pharmaceuticals, Inc. (a)		4,651		2,180,017
				20,855,113
Industrials — 4.3%
Automatic Data Processing, Inc.		1,507		359,706
Caterpillar, Inc.		4,458		1,484,960
Copart, Inc. (a)		19,501		1,056,174
EMCOR Group, Inc.		4,904		1,790,352
Paychex, Inc.		9,387		1,112,923
Paycom Software, Inc.		941		134,601
Paylocity Holding Corp. (a)		3,292		434,050
Rollins, Inc.		8,068		393,638
United Rentals, Inc.		1,490		963,628
Vertiv Holdings Co. Class A		6,159		533,184
W.W. Grainger, Inc.		305		275,183
				8,538,399
Information Technology — 45.8%
Adobe, Inc. (a)		3,163		1,757,173
Advanced Micro Devices, Inc. (a)		6,301		1,022,085
Apple, Inc.		102,580		21,605,400
Applied Materials, Inc.		7,578		1,788,332
AppLovin Corp. Class A (a)		5,977		497,406
Arista Networks, Inc. (a)		7,147		2,504,881
Atlassian Corp. Class A (a)		4,248		751,386
Broadcom, Inc.		4,378		7,029,010
Cadence Design Systems, Inc. (a)		831		255,740
Dynatrace, Inc. (a)		18,298		818,652
GoDaddy, Inc. Class A (a)		5,595		781,677
Intuit, Inc.		1,139		748,562
KLA Corp.		2,454		2,023,348
Manhattan Associates, Inc. (a)		889		219,299
Microsoft Corp.		53,323		23,832,715
NVIDIA Corp.		185,541		22,921,735
Procore Technologies, Inc. (a)		1,689		111,998
Salesforce, Inc.		2,740		704,454

MassMutual Disciplined Growth Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Smartsheet, Inc. Class A (a)		1,809	$	79,741
Synopsys, Inc. (a)		2,121		1,262,122
				90,715,716
TOTAL COMMON STOCK (Cost $136,978,044)				194,903,363
TOTAL EQUITIES (Cost $136,978,044)				194,903,363
EXCHANGE-TRADED FUNDS — 0.9%
iShares Russell 1000 Growth ETF		4,929		1,796,670
TOTAL EXCHANGE-TRADED FUNDS (Cost $1,796,707)				1,796,670
TOTAL LONG-TERM INVESTMENTS (Cost $138,774,751)				196,700,033
SHORT-TERM INVESTMENTS — 1.2%
Investment of Cash Collateral from Securities Loaned — 0.2%
State Street Navigator Securities Lending Prime Portfolio (b)		370,602		370,602
	Principal Amount
Repurchase Agreement — 1.0%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (c)	$	2,054,683		2,054,683
TOTAL SHORT-TERM INVESTMENTS (Cost $2,425,285)				2,425,285
TOTAL INVESTMENTS — 100.5% (Cost $141,200,036) (d)				199,125,318
Other Assets/(Liabilities) — (0.5)%				(1,075,334)
NET ASSETS — 100.0%			$	198,049,984

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

(c) Maturity value of $2,054,957. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $2,095,814.

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

MassMutual Small Cap Opportunities Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.4%
COMMON STOCK — 98.4%
Communication Services — 1.0%
Ziff Davis, Inc. (a)		70,911	$	3,903,651
Consumer Discretionary — 8.7%
AutoNation, Inc. (a)		42,054		6,702,567
Dorman Products, Inc. (a)		58,422		5,344,445
KB Home		93,480		6,560,426
Steven Madden Ltd.		102,238		4,324,667
Texas Roadhouse, Inc.		18,333		3,147,959
TopBuild Corp. (a)		7,549		2,908,403
Visteon Corp. (a)		48,460		5,170,682
				34,159,149
Consumer Staples — 2.7%
BellRing Brands, Inc. (a)		102,319		5,846,508
BJ's Wholesale Club Holdings, Inc. (a)		51,785		4,548,794
				10,395,302
Energy — 5.6%
Chesapeake Energy Corp. (b)		43,376		3,565,073
CNX Resources Corp. (a)		205,917		5,003,783
Helmerich & Payne, Inc. (b)		156,301		5,648,718
Northern Oil & Gas, Inc.		129,317		4,806,713
Nov, Inc.		142,258		2,704,325
				21,728,612
Financials — 13.9%
Bank of NT Butterfield & Son Ltd.		65,539		2,301,730
Berkshire Hills Bancorp, Inc.		86,602		1,974,526
Cathay General Bancorp		113,682		4,288,085
Columbia Banking System, Inc.		176,179		3,504,200
Definity Financial Corp.		120,219		3,952,670
Federated Hermes, Inc.		145,272		4,776,543
Marqeta, Inc. Class A (a)		440,332		2,413,019
OceanFirst Financial Corp.		130,898		2,079,969
Pacific Premier Bancorp, Inc.		169,034		3,882,711
PennyMac Financial Services, Inc.		62,915		5,951,759
Skyward Specialty Insurance Group, Inc. (a)		46,243		1,673,072
Stifel Financial Corp.		36,072		3,035,459
United Community Banks, Inc.		94,724		2,411,673
Webster Financial Corp.		82,342		3,589,288
Wintrust Financial Corp.		59,130		5,827,853
WSFS Financial Corp.		59,526		2,797,722
				54,460,279

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

	Number of Shares		Value
Health Care — 18.5%
Acadia Healthcare Co., Inc. (a)		73,659	$	4,974,929
Addus HomeCare Corp. (a)		22,363		2,596,568
ADMA Biologics, Inc. (a)		742,846		8,305,018
Ascendis Pharma AS ADR (a)		30,332		4,136,678
BioLife Solutions, Inc. (a) (b)		137,210		2,940,410
Bridgebio Pharma, Inc. (a)		89,108		2,257,106
BrightSpring Health Services, Inc. (a)		186,011		2,113,085
Collegium Pharmaceutical, Inc. (a)		123,537		3,977,891
CryoPort, Inc. (a) (b)		60,652		419,105
Encompass Health Corp.		34,730		2,979,487
Evolent Health, Inc. Class A (a)		130,647		2,497,971
Guardant Health, Inc. (a)		114,444		3,305,143
Immunovant, Inc. (a) (b)		42,242		1,115,189
Inspire Medical Systems, Inc. (a) (b)		14,299		1,913,635
Integer Holdings Corp. (a) (b)		36,416		4,216,609
Intra-Cellular Therapies, Inc. (a)		65,144		4,461,712
Merus NV (a)		24,308		1,438,304
Repligen Corp. (a)		23,401		2,949,930
Structure Therapeutics, Inc. ADR (a) (b)		23,584		926,144
Tenet Healthcare Corp. (a)		21,426		2,850,301
TransMedics Group, Inc. (a) (b)		36,446		5,489,496
Twist Bioscience Corp. (a)		106,947		5,270,348
Ultragenyx Pharmaceutical, Inc. (a)		27,436		1,127,620
				72,262,679
Industrials — 18.7%
ABM Industries, Inc.		62,099		3,140,347
Air Lease Corp.		78,912		3,750,687
Allison Transmission Holdings, Inc.		77,643		5,893,104
Atkore, Inc.		55,161		7,442,874
BWX Technologies, Inc.		33,519		3,184,305
CACI International, Inc. Class A (a)		9,457		4,067,740
Casella Waste Systems, Inc. Class A (a)		57,774		5,732,336
Curtiss-Wright Corp.		11,243		3,046,628
Enpro, Inc.		33,553		4,884,310
Esab Corp.		55,798		5,269,005
Gates Industrial Corp. PLC (a)		193,927		3,065,986
Hub Group, Inc. Class A		129,284		5,565,676
Korn Ferry		88,178		5,920,271
Paycor HCM, Inc. (a)		247,827		3,147,403
Regal Rexnord Corp.		17,764		2,402,048
Zurn Elkay Water Solutions Corp. Class C		222,266		6,534,620
				73,047,340
Information Technology — 14.1%
Allegro MicroSystems, Inc. (a)		140,294		3,961,903
ASGN, Inc. (a)		50,356		4,439,888
Astera Labs, Inc. (a)		13,910		841,694
Belden, Inc.		53,715		5,038,467
Envestnet, Inc. (a) (b)		70,152		4,390,814
Gitlab, Inc. Class A (a)		73,172		3,638,112
HashiCorp, Inc. Class A (a)		88,515		2,982,070
Itron, Inc. (a)		68,243		6,753,327
MACOM Technology Solutions Holdings, Inc. (a)		59,755		6,660,890
MKS Instruments, Inc.		38,325		5,004,478

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

	Number of Shares		Value
Progress Software Corp.		65,274	$	3,541,767
Silicon Laboratories, Inc. (a)		32,974		3,647,914
Vishay Intertechnology, Inc.		195,516		4,360,007
				55,261,331
Materials — 6.6%
ATI, Inc. (a) (b)		95,627		5,302,517
Century Aluminum Co. (a) (b)		117,979		1,976,148
Commercial Metals Co.		72,665		3,995,848
Kaiser Aluminum Corp.		31,345		2,755,226
Silgan Holdings, Inc.		96,241		4,073,882
Summit Materials, Inc. Class A (a)		207,135		7,583,212
				25,686,833
Real Estate — 6.6%
DiamondRock Hospitality Co.		692,349		5,850,349
DigitalBridge Group, Inc.		277,936		3,807,723
Four Corners Property Trust, Inc.		226,978		5,599,547
Outfront Media, Inc.		364,129		5,207,045
Terreno Realty Corp.		87,519		5,179,375
				25,644,039
Utilities — 2.0%
Chesapeake Utilities Corp.		34,339		3,646,802
Portland General Electric Co. (b)		93,296		4,034,119
				7,680,921
TOTAL COMMON STOCK (Cost $327,877,381)				384,230,136
TOTAL EQUITIES (Cost $327,877,381)				384,230,136
TOTAL LONG-TERM INVESTMENTS (Cost $327,877,381)				384,230,136
SHORT-TERM INVESTMENTS — 1.6%
Investment of Cash Collateral from Securities Loaned — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (c)		293,825		293,825
	Principal Amount
Repurchase Agreement — 1.5%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (d)	$	5,804,189		5,804,189
TOTAL SHORT-TERM INVESTMENTS (Cost $6,098,014)				6,098,014

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

	Value
TOTAL INVESTMENTS — 100.0% (Cost $333,975,395) (e)	$	390,328,150
Other Assets/(Liabilities) — (0.0)%		(133,064)
NET ASSETS — 100.0%	$	390,195,086

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, 2024, was $32,563,465 or 8.35% of net assets. The Fund received $32,915,301 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

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

(d) Maturity value of $5,804,963. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $5,920,333.

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

MassMutual Global Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 100.0%
COMMON STOCK — 100.0%
Canada — 0.6%
Canadian Pacific Kansas City Ltd. (a)		13,663	$	1,075,688
China — 2.3%
JD.com, Inc. ADR		130,876		3,381,836
Tencent Holdings Ltd.		23,400		1,110,587
				4,492,423
Denmark — 5.4%
Novo Nordisk AS Class B		73,696		10,527,928
France — 8.4%
Airbus SE		48,410		6,675,044
Dassault Systemes SE		17,905		674,023
EssilorLuxottica SA		7,068		1,516,567
Kering SA		1,668		606,383
LVMH Moet Hennessy Louis Vuitton SE		8,932		6,859,341
				16,331,358
Germany — 3.7%
Allianz SE Registered		3,615		1,004,407
SAP SE		29,992		6,089,424
				7,093,831
India — 6.8%
DLF Ltd.		950,460		9,335,390
HDFC Bank Ltd.		43,579		880,947
ICICI Bank Ltd. Sponsored ADR		101,336		2,919,490
				13,135,827
Israel — 0.9%
Nice Ltd. Sponsored ADR (a) (b)		10,509		1,807,233
Italy — 1.0%
Brunello Cucinelli SpA		15,525		1,557,790
Ferrari NV		806		329,540
				1,887,330
Japan — 4.2%
Capcom Co. Ltd.		21,300		402,859
Hoya Corp.		7,000		819,054
Keyence Corp.		10,800		4,764,694

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
TDK Corp.		36,400	$	2,224,420
				8,211,027
Netherlands — 2.3%
ASML Holding NV		3,134		3,233,340
BE Semiconductor Industries NV		3,721		621,703
Universal Music Group NV		16,903		501,061
				4,356,104
Spain — 1.2%
Amadeus IT Group SA		34,704		2,309,401
Sweden — 4.9%
Assa Abloy AB Class B		125,186		3,547,782
Atlas Copco AB Class A		310,177		5,845,690
				9,393,472
Switzerland — 0.7%
Lonza Group AG Registered		2,610		1,418,417
United States — 57.6%
Adobe, Inc. (b)		11,271		6,261,491
Alphabet, Inc. Class A		127,494		23,223,032
Amazon.com, Inc. (b)		14,736		2,847,732
Analog Devices, Inc.		43,176		9,855,354
Avantor, Inc. (b)		20,689		438,607
Boston Scientific Corp. (b)		11,153		858,893
Broadcom, Inc.		539		865,381
Charles River Laboratories International, Inc. (b)		1,809		373,703
Danaher Corp.		3,547		886,218
Ecolab, Inc.		3,410		811,580
Edwards Lifesciences Corp. (b)		7,724		713,466
Eli Lilly & Co.		1,238		1,120,860
Equifax, Inc.		11,701		2,837,024
IDEXX Laboratories, Inc. (b)		1,447		704,978
Illumina, Inc. (b)		4,131		431,194
Intuit, Inc.		12,173		8,000,217
Intuitive Surgical, Inc. (b)		5,279		2,348,363
IQVIA Holdings, Inc. (b)		8,082		1,708,858
Lam Research Corp.		992		1,056,331
Linde PLC (LIN US)		1,287		564,748
Marriott International, Inc. Class A		6,837		1,652,982
Marvell Technology, Inc.		43,223		3,021,288
Meta Platforms, Inc. Class A		31,507		15,886,460
Microsoft Corp.		9,823		4,390,390
Netflix, Inc. (b)		1,723		1,162,818
NVIDIA Corp.		51,230		6,328,954
Phathom Pharmaceuticals, Inc. (a) (b)		34,815		358,595
S&P Global, Inc.		15,923		7,101,658
Synopsys, Inc. (b)		852		506,991
Thermo Fisher Scientific, Inc.		1,297		717,241
TJX Cos., Inc.		1,810		199,281

MassMutual Global Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Visa, Inc. Class A		16,302	$	4,278,786
				111,513,474
TOTAL COMMON STOCK (Cost $99,619,262)				193,553,513
TOTAL EQUITIES (Cost $99,619,262)				193,553,513
TOTAL LONG-TERM INVESTMENTS (Cost $99,619,262)				193,553,513
SHORT-TERM INVESTMENTS — 0.6%
Investment of Cash Collateral from Securities Loaned — 0.6%
State Street Navigator Securities Lending Government Money Market Portfolio (c)		1,088,843		1,088,843
TOTAL SHORT-TERM INVESTMENTS (Cost $1,088,843)				1,088,843
TOTAL INVESTMENTS — 100.6% (Cost $100,708,105) (d)				194,642,356
Other Assets/(Liabilities) — (0.6)%				(1,079,089)
NET ASSETS — 100.0%			$	193,563,267

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, 2024, was $2,821,973 or 1.46% of net assets. The Fund received $1,781,336 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) Represents investment of security lending cash collateral. (Note 2).

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

MassMutual International Equity Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.4%
COMMON STOCK — 98.2%
Australia — 1.2%
BHP Group Ltd. (a)		3,700	$	105,992
Glencore PLC		52,500		299,343
Macquarie Group Ltd.		2,500		340,997
Santos Ltd.		62,300		317,505
Sonic Healthcare Ltd.		13,200		230,468
Whitehaven Coal Ltd.		18,400		93,770
				1,388,075
Belgium — 1.0%
Anheuser-Busch InBev SA		8,500		491,014
Groupe Bruxelles Lambert NV		1,700		120,946
KBC Group NV		4,000		282,154
Liberty Global Ltd. Class C (b)		12,300		219,555
				1,113,669
Canada — 5.9%
Bank of Nova Scotia (a)		16,959		775,771
Canadian National Railway Co.		23,672		2,797,278
CCL Industries, Inc. Class B		1,700		89,396
Intact Financial Corp.		17,286		2,881,021
TFI International, Inc. (a)		432		62,726
				6,606,192
Denmark — 0.1%
Novo Nordisk AS Class B		1,000		142,856
Finland — 1.9%
Kone OYJ Class B		43,651		2,156,867
France — 8.9%
Accor SA		8,226		339,153
Amundi SA (c)		3,192		204,823
AXA SA		57,330		1,887,724
Capgemini SE		14,827		2,936,805
Cie de Saint-Gobain SA		3,200		247,811
LVMH Moet Hennessy Louis Vuitton SE		1,315		1,009,856
Rexel SA		3,800		97,761
Societe Generale SA		12,200		284,853
Sodexo SA		2,734		246,363
Teleperformance SE		1,000		104,891
TotalEnergies SE		6,900		459,879
Veolia Environnement SA		14,692		441,119
Vinci SA		15,732		1,654,925
				9,915,963

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Germany — 8.2%
Allianz SE Registered		860	$	238,946
BASF SE		3,500		169,122
Deutsche Boerse AG		1,536		313,981
Deutsche Post AG		9,200		372,245
Heidelberg Materials AG		3,400		352,320
Infineon Technologies AG		10,000		367,373
K&S AG Registered		5,511		74,212
Merck KGaA		18,027		2,987,162
SAP SE		3,300		670,015
Siemens AG Registered		2,460		457,533
Symrise AG		24,252		2,968,830
Zalando SE (b) (c)		8,099		189,326
				9,161,065
Hong Kong — 2.8%
AIA Group Ltd.		307,111		2,082,504
CK Asset Holdings Ltd.		52,500		196,532
Prudential PLC		90,334		819,502
				3,098,538
Ireland — 1.0%
AerCap Holdings NV		4,481		417,629
AIB Group PLC		55,600		292,934
Smurfit Kappa Group PLC		7,900		351,212
				1,061,775
Israel — 0.3%
Check Point Software Technologies Ltd. (b)		1,790		295,350
Italy — 0.1%
Prysmian SpA		1,500		92,413
Ryanair Holdings PLC Sponsored ADR		200		23,288
				115,701
Japan — 15.7%
Astellas Pharma, Inc.		139,920		1,383,794
Canon, Inc. (a)		7,600		206,509
Chugai Pharmaceutical Co. Ltd.		85,041		3,035,692
FANUC Corp.		8,200		225,062
Fujitsu Ltd.		28,000		439,933
Hitachi Ltd.		26,000		586,078
Hoya Corp.		9,800		1,146,675
Kao Corp. (a)		38,416		1,560,910
KDDI Corp. (a)		63,434		1,681,016
Keyence Corp.		4,330		1,910,289
Kyocera Corp.		21,500		247,203
Nintendo Co. Ltd.		5,800		309,899
Olympus Corp.		21,000		337,846
ORIX Corp.		20,500		454,800
Rakuten Group, Inc. (b)		47,600		244,237
Renesas Electronics Corp.		16,100		303,985
SBI Holdings, Inc.		15,500		393,592
Seven & i Holdings Co. Ltd.		31,200		380,000
Shiseido Co. Ltd.		34,442		980,192

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Sony Group Corp.		7,200	$	611,798
Square Enix Holdings Co. Ltd.		2,600		78,100
Sumitomo Mitsui Financial Group, Inc.		9,100		608,693
Toyota Industries Corp.		5,000		423,275
				17,549,578
Luxembourg — 0.4%
ArcelorMittal SA		9,500		216,584
Eurofins Scientific SE (a)		3,600		178,980
				395,564
Netherlands — 3.6%
ASML Holding NV		390		402,362
EXOR NV		1,000		104,222
Heineken Holding NV		3,800		299,111
Heineken NV		29,033		2,802,383
ING Groep NV Series N		14,000		239,886
Koninklijke Philips NV (b)		3,236		81,373
Pluxee NV (b)		2,734		76,701
				4,006,038
Norway — 0.5%
Aker BP ASA		11,413		290,873
DNB Bank ASA		16,500		324,001
				614,874
Republic of Korea — 0.4%
Samsung Electronics Co. Ltd.		7,900		464,250
Singapore — 0.4%
DBS Group Holdings Ltd.		15,510		408,699
Spain — 3.7%
Iberdrola SA		166,670		2,162,127
Industria de Diseno Textil SA		39,115		1,932,969
				4,095,096
Sweden — 2.6%
Assa Abloy AB Class B		73,618		2,086,340
Boliden AB		3,000		95,562
Essity AB Class B		13,400		342,537
Husqvarna AB Class B		8,500		67,969
Skandinaviska Enskilda Banken AB Class A		18,259		270,467
Volvo AB Class B		3,200		82,092
				2,944,967
Switzerland — 6.8%
Chocoladefabriken Lindt & Spruengli AG		141		1,646,721
Cie Financiere Richemont SA Registered Class A		2,200		343,351
Julius Baer Group Ltd.		3,700		206,588
Novartis AG Registered		27,106		2,903,931
Sika AG Registered		8,897		2,532,640
				7,633,231

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
United Kingdom — 18.0%
Ashtead Group PLC		4,400	$	293,167
AstraZeneca PLC		15,794		2,462,221
Aviva PLC		34,058		205,393
BAE Systems PLC		136,765		2,283,628
Barratt Developments PLC		18,300		108,584
Bunzl PLC		3,800		144,147
Burberry Group PLC		6,600		73,286
CK Hutchison Holdings Ltd.		74,000		354,216
Compass Group PLC		72,403		1,971,246
DCC PLC		5,041		353,338
Diageo PLC		79,533		2,502,138
Dowlais Group PLC		57,069		52,442
Entain PLC		11,400		90,256
Inchcape PLC		21,056		198,173
Informa PLC		12,000		129,915
Kingfisher PLC		68,900		216,891
Legal & General Group PLC		106,400		304,007
Lloyds Banking Group PLC		667,500		462,451
Pearson PLC		12,961		161,751
Persimmon PLC		8,900		151,276
Reckitt Benckiser Group PLC		45,323		2,445,816
Smith & Nephew PLC		154,711		1,912,674
Tesco PLC		92,900		359,660
Unilever PLC (ULVR LN)		8,500		467,990
Unilever PLC (UNA NA)		43,791		2,404,715
				20,109,381
United States — 14.7%
BP PLC		78,300		471,795
CNH Industrial NV		23,500		238,055
Experian PLC		57,103		2,648,083
GSK PLC		15,920		306,825
Linde PLC (LIN US)		5,313		2,331,398
Nestle SA Registered		30,605		3,124,083
Roche Holding AG		10,489		2,910,849
Sanofi SA		4,400		422,934
Schneider Electric SE		8,789		2,097,089
Shell PLC		44,152		1,586,709
Stellantis NV		5,400		106,206
Tenaris SA		7,800		119,506
				16,363,532
TOTAL COMMON STOCK (Cost $106,321,622)				109,641,261
PREFERRED STOCK — 0.2%
Germany — 0.2%
Henkel AG & Co. KGaA 2.236%
		1,969		175,465

MassMutual International Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
TOTAL PREFERRED STOCK (Cost $153,992)			$	175,465
TOTAL EQUITIES (Cost $106,475,614)				109,816,726
TOTAL LONG-TERM INVESTMENTS (Cost $106,475,614)				109,816,726
SHORT-TERM INVESTMENTS — 2.9%
Investment of Cash Collateral from Securities Loaned — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		172,360		172,360
	Principal Amount
Repurchase Agreement — 2.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (e)	$	3,077,113		3,077,113
TOTAL SHORT-TERM INVESTMENTS (Cost $3,249,473)				3,249,473
TOTAL INVESTMENTS — 101.3% (Cost $109,725,087) (f)				113,066,199
Other Assets/(Liabilities) — (1.3)%				(1,467,548)
NET ASSETS — 100.0%			$	111,598,651

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, 2024, was $3,002,876 or 2.69% of net assets. The Fund received $2,994,738 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, 2024, the aggregate market value of these securities amounted to $394,149 or 0.35% of net assets.

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

(e) Maturity value of $3,077,523. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $3,138,775.

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

MassMutual Strategic Emerging Markets Fund —  Portfolio of Investments

June 30, 2024 (Unaudited)

	Number of Shares		Value
EQUITIES — 97.4%
COMMON STOCK — 96.5%
Brazil — 5.9%
Ambev SA		398,863	$	814,123
Arezzo Industria e Comercio SA		17,087		156,959
B3 SA - Brasil Bolsa Balcao		132,900		243,448
Banco BTG Pactual SA		103,600		572,848
Localiza Rent a Car SA		113,653		853,907
NU Holdings Ltd. Class A (a)		131,023		1,688,886
Raia Drogasil SA		65,000		298,599
Vale SA Sponsored ADR		53,554		598,198
WEG SA		112,437		848,593
				6,075,561
Chile — 1.0%
Antofagasta PLC		20,145		534,182
Banco de Chile		4,504,751		512,442
				1,046,624
China — 17.9%
Airtac International Group		10,000		303,225
Budweiser Brewing Co. APAC Ltd. (b)		328,200		386,371
H World Group Ltd.		10,200		33,955
H World Group Ltd. ADR		135,049		4,499,833
MicroTech Medical Hangzhou Co. Ltd. Class H (a) (b)		15,000		7,338
NetEase, Inc. ADR		3,908		373,527
New Horizon Health, Ltd. (a) (b) (c)		145,000		262,554
PDD Holdings, Inc. ADR (a)		13,154		1,748,824
Tencent Holdings Ltd.		143,190		6,795,937
WuXi XDC Cayman, Inc. (a)		174,500		386,761
Yum China Holdings, Inc.		63,895		1,970,522
ZTO Express Cayman, Inc. ADR		84,622		1,755,906
				18,524,753
France — 4.3%
L'Oreal SA		1,400		615,600
Pernod Ricard SA		16,386		2,229,926
TotalEnergies SE (d)		24,388		1,625,437
				4,470,963
Hong Kong — 0.1%
AIA Group Ltd.		8,400		56,960
India — 16.5%
Adani Ports & Special Economic Zone Ltd.		29,497		518,464
Havells India Ltd.		34,020		741,127
HCL Technologies Ltd.		29,326		512,136

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

	Number of Shares		Value
HDFC Bank Ltd.		198,192	$	4,006,441
Infosys Ltd.		49,358		926,750
Kotak Mahindra Bank Ltd.		237,208		5,103,331
Macrotech Developers Ltd. (b)		41,973		751,114
Oberoi Realty Ltd.		71,631		1,509,042
Sun Pharmaceutical Industries Ltd.		3,155		57,387
Tata Consultancy Services Ltd.		62,008		2,896,222
				17,022,014
Indonesia — 1.6%
Bank Central Asia Tbk. PT		2,162,200		1,304,388
Bank Rakyat Indonesia Persero Tbk. PT		1,152,500		321,523
				1,625,911
Italy — 2.0%
Ermenegildo Zegna NV (d)		18,089		214,174
PRADA SpA		252,200		1,885,710
				2,099,884
Japan — 2.4%
Chugai Pharmaceutical Co. Ltd.		25,400		906,699
Daiichi Sankyo Co. Ltd.		43,600		1,523,106
				2,429,805
Mexico — 10.6%
America Movil SAB de CV ADR		89,483		1,521,211
Fomento Economico Mexicano SAB de CV		278,403		2,988,552
Grupo Aeroportuario del Pacifico SAB de CV Class B		6,070		95,395
Grupo Aeroportuario del Sureste SAB de CV Class B		6,233		187,910
Grupo Mexico SAB de CV Series B		752,563		4,060,426
Wal-Mart de Mexico SAB de CV		607,755		2,075,901
				10,929,395
Netherlands — 0.3%
Argenx SE ADR (a)		786		338,012
Peru — 0.9%
Credicorp Ltd.		5,981		964,915
Philippines — 1.5%
SM Investments Corp.		89,440		1,264,974
SM Prime Holdings, Inc.		539,600		260,238
				1,525,212
Poland — 0.6%
Allegro.eu SA (a) (b)		66,751		622,390
Portugal — 2.2%
Galp Energia SGPS SA		99,874		2,110,053
Jeronimo Martins SGPS SA		10,427		203,616
				2,313,669
Republic of Korea — 8.3%
LG H&H Co. Ltd.		333		83,241

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

	Number of Shares		Value
Samsung Biologics Co. Ltd. (a) (b)		3,203	$	1,686,375
Samsung Electronics Co. Ltd.		93,763		5,510,057
SK Hynix, Inc.		7,970		1,351,632
				8,631,305
Russia — 0.0%
Novatek PJSC GDR (a) (b) (c) (e)		1,987		—
Sberbank of Russia PJSC (a) (c) (e)		18,062		—
				—
South Africa — 1.2%
FirstRand Ltd.		285,546		1,203,039
Switzerland — 1.6%
Cie Financiere Richemont SA Registered Class A		9,513		1,484,682
Galderma Group AG (a)		2,472		203,175
				1,687,857
Taiwan — 15.0%
Global Unichip Corp.		2,000		98,183
MediaTek, Inc.		43,000		1,838,262
Taiwan Semiconductor Manufacturing Co. Ltd.		439,000		13,056,522
Voltronic Power Technology Corp.		8,000		473,387
				15,466,354
Turkey — 1.0%
Akbank TAS		82,895		162,677
BIM Birlesik Magazalar AS		17,410		290,435
KOC Holding AS		58,195		405,412
Migros Ticaret AS		11,871		192,583
				1,051,107
United Arab Emirates — 0.3%
Americana Restaurants International PLC		378,426		322,760
United Kingdom — 1.3%
AstraZeneca PLC		8,787		1,369,858
TOTAL COMMON STOCK (Cost $92,603,859)				99,778,348
PREFERRED STOCK — 0.9%
Brazil — 0.9%
Itau Unibanco Holding SA 7.239%
		170,082		986,093
TOTAL PREFERRED STOCK (Cost $947,936)				986,093
TOTAL EQUITIES (Cost $93,551,795)				100,764,441

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

	Number of Shares		Value
RIGHTS — 0.0%
Brazil — 0.0%
Localiza Rent A Car SA (a)		999	$	1,608
TOTAL RIGHTS (Cost $0)				1,608
TOTAL LONG-TERM INVESTMENTS (Cost $93,551,795)				100,766,049
SHORT-TERM INVESTMENTS — 5.5%
Investment of Cash Collateral from Securities Loaned — 1.6%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		1,676,585		1,676,585
	Principal Amount
Repurchase Agreement — 3.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 6/28/24, 1.600%, due 7/01/24 (g)	$	4,007,019	$	4,007,019
TOTAL SHORT-TERM INVESTMENTS (Cost $5,683,604)				5,683,604
TOTAL INVESTMENTS — 102.9% (Cost $99,235,399) (h)				106,449,653
Other Assets/(Liabilities) — (2.9)%				(3,007,226)
NET ASSETS — 100.0%			$	103,442,427

Abbreviation Legend

ADR American Depositary Receipt

GDR Global Depositary Receipt

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At June 30, 2024, the aggregate market value of these securities amounted to $3,716,142 or 3.59% of net assets.

(c) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At June 30, 2024, these securities amounted to a value of $262,554 or 0.25% of net assets.

(d) Denotes all or a portion of security on loan. The total value of securities on loan as of June 30, 2024, was $1,807,709 or 1.75% of net assets. The Fund received $219,375 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(e) Investment is valued using significant unobservable inputs.

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

(g) Maturity value of $4,007,554. Collateralized by U.S. Government Agency obligations with a rate of 4.500%, maturity date of 3/31/26, and an aggregate market value, including accrued interest, of $4,087,237.

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

Notes to Portfolio of Investments (Unaudited)

1. The Funds

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

MassMutual Short-Duration Bond Fund ("Short-Duration Bond Fund")

MassMutual Inflation-Protected and Income Fund ("Inflation-Protected and Income Fund")

MassMutual Core Bond Fund ("Core Bond Fund")

MassMutual Diversified Bond Fund ("Diversified Bond Fund")

MassMutual High Yield Fund ("High Yield Fund")

MassMutual Balanced Fund ("Balanced Fund")

MassMutual Disciplined Value Fund ("Disciplined Value Fund")

MassMutual Main Street Fund ("Main Street Fund")

MassMutual Disciplined Growth Fund ("Disciplined Growth Fund")

MassMutual Small Cap Opportunities Fund ("Small Cap Opportunities Fund")

MassMutual Global Fund ("Global Fund")

MassMutual International Equity Fund ("International Equity Fund")

MassMutual Strategic Emerging Markets Fund ("Strategic Emerging Markets Fund")

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 alternate valuation approaches including the following:

Market approach: considers factors including the price of recent investments in the same or similar security or financial metrics of comparable securities.

Income approach: considers factors including expected future cash flows, security specific risks, and corresponding discount rates.

Cost approach: considers factors including the value of the security's underlying assets and liabilities.

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.

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

Notes to Portfolio of Investments (Unaudited) (Continued)

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

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

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

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

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

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

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.

Notes to Portfolio of Investments (Unaudited) (Continued)

The following is the aggregate value by input level, as of June 30, 2024, for the Funds' investments:

Short-Duration Bond Fund
Asset Investments	Level 1			Level 2		Level 3		Total
Corporate Debt	$	—		$	76,579,985	$	—	$	76,579,985
Non-U.S. Government Agency Obligations		—			69,022,352		—		69,022,352
U.S. Government Agency Obligations and Instrumentalities		—			46,631		—		46,631
Short-Term Investments		437,550			18,230,186		—		18,667,736
Total Investments	$	437,550		$	163,879,154	$	—	$	164,316,704
Asset Derivatives
Futures Contracts	$	252,920		$	—	$	—	$	252,920
Liability Derivatives
Futures Contracts	$	(387,822	)	$	—	$	—	$	(387,822	)

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	$	—		$	134,816,533		$	3,673,515	$	138,490,048
U.S. Government Agency Obligations and Instrumentalities		—			25,294,658			—		25,294,658
U.S. Treasury Obligations		—			46,615,353			—		46,615,353
Short-Term Investments		—			30,591,895			—		30,591,895
Total Investments	$	—		$	237,318,439		$	3,673,515	$	240,991,954
Asset Derivatives
Futures Contracts	$	2,762		$	—		$	—	$	2,762
Swap Agreements		—			2,874,058			—		2,874,058
Total	$	2,762		$	2,874,058		$	—	$	2,876,820
Liability Derivatives
Futures Contracts	$	(222,686	)	$	—		$	—	$	(222,686	)
Swap Agreements		—			(312,490	)		—		(312,490	)
Total	$	(222,686	)	$	(312,490	)	$	—	$	(535,176	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Core Bond Fund
Asset Investments	Level 1			Level 2		Level 3		Total
Corporate Debt	$	—		$	242,609,076	$	—	$	242,609,076
Non-U.S. Government Agency Obligations		—			170,103,968		—		170,103,968
Sovereign Debt Obligations		—			1,424,151		—		1,424,151
U.S. Government Agency Obligations and Instrumentalities		—			187,482,229		—		187,482,229
U.S. Treasury Obligations		—			29,169,024		—		29,169,024
Short-Term Investments		7,915,575			82,760,075		—		90,675,650
Total Investments	$	7,915,575		$	713,548,523	$	—	$	721,464,098
Asset Derivatives
Futures Contracts	$	783,444		$	—	$	—	$	783,444
Liability Derivatives
Futures Contracts	$	(48,422	)	$	—	$	—	$	(48,422	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Diversified Bond Fund
Asset Investments	Level 1			Level 2			Level 3		Total
Corporate Debt	$	—		$	54,311,098		$	—	$	54,311,098
Non-U.S. Government Agency Obligations		—			34,428,731			—		34,428,731
Sovereign Debt Obligations		—			139,371			—		139,371
U.S. Government Agency Obligations and Instrumentalities		—			26,979,232			—		26,979,232
U.S. Treasury Obligations		—			2,487,909			—		2,487,909
Purchased Options		—			1,871			—		1,871
Warrants		—			—			4,108		4,108
Short-Term Investments		2,170,695			17,590,367			—		19,761,062
Total Investments	$	2,170,695		$	135,938,579		$	4,108	$	138,113,382
Asset Derivatives
Forward Contracts	$	—		$	32,361		$	—	$	32,361
Futures Contracts		177,554			—			—		177,554
Total	$	177,554		$	32,361		$	—	$	209,915
Liability Derivatives
Forward Contracts	$	—		$	(80,810	)	$	—	$	(80,810	)
Futures Contracts		(1,389	)		—			—		(1,389	)
Written Options		—			(2,011	)		—		(2,011	)
Total	$	(1,389	)	$	(82,821	)	$	—	$	(84,210	)

Notes to Portfolio of Investments (Unaudited) (Continued)

High Yield Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Bank Loans	$	—	$	36,152,872	$	—	$	36,152,872
Corporate Debt		—		325,949,147		—		325,949,147
Short-Term Investments		17,141,988		16,980,159		—		34,122,147
Total Investments	$	17,141,988	$	379,082,178	$	—	$	396,224,166

Notes to Portfolio of Investments (Unaudited) (Continued)

Balanced Fund
Asset Investments	Level 1			Level 2		Level 3		Total
Common Stock	$	66,977,446		$	—	$	—	$	66,977,446
Corporate Debt		—			11,421,607		—		11,421,607
Non-U.S. Government Agency Obligations		—			3,758,087		—		3,758,087
U.S. Government Agency Obligations and Instrumentalities		—			9,769,877		—		9,769,877
U.S. Treasury Obligations		—			12,883,625		—		12,883,625
Short-Term Investments		—			1,231,695		—		1,231,695
Total Investments	$	66,977,446		$	39,064,891	$	—	$	106,042,337
Asset Derivatives
Futures Contracts	$	4,983		$	—	$	—	$	4,983
Liability Derivatives
Futures Contracts	$	(18,693	)	$	—	$	—	$	(18,693	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Disciplined Value Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	38,564,985	$	—	$	—	$	38,564,985
Short-Term Investments		50,058		218,422		—		268,480
Total Investments	$	38,615,043	$	218,422	$	—	$	38,833,465

Notes to Portfolio of Investments (Unaudited) (Continued)

Main Street Fund
Asset Investments	Level 1		Level 2			Level 3		Total
Common Stock	$	67,718,295	$	696,709	*	$	—	$	68,415,004
Short-Term Investments		—		487,029			—		487,029
Total Investments	$	67,718,295	$	1,183,738		$	—	$	68,902,033

Notes to Portfolio of Investments (Unaudited) (Continued)

Disciplined Growth Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	194,903,363	$	—	$	—	$	194,903,363
Exchange-Traded Funds		1,796,670		—		—		1,796,670
Short-Term Investments		370,602		2,054,683		—		2,425,285
Total Investments	$	197,070,635	$	2,054,683	$	—	$	199,125,318

Notes to Portfolio of Investments (Unaudited) (Continued)

Small Cap Opportunities Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	384,230,136	$	—	$	—	$	384,230,136
Short-Term Investments		293,825		5,804,189		—		6,098,014
Total Investments	$	384,523,961	$	5,804,189	$	—	$	390,328,150

Notes to Portfolio of Investments (Unaudited) (Continued)

Global Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Canada	$	1,075,688	$	—	$	—	$	1,075,688
China		3,381,836		1,110,587		—		4,492,423
Denmark		—		10,527,928		—		10,527,928
France		—		16,331,358		—		16,331,358
Germany		—		7,093,831		—		7,093,831
India		2,919,490		10,216,337		—		13,135,827
Israel		1,807,233		—		—		1,807,233
Italy		—		1,887,330		—		1,887,330
Japan		—		8,211,027		—		8,211,027
Netherlands		—		4,356,104		—		4,356,104
Spain		—		2,309,401		—		2,309,401
Sweden		—		9,393,472		—		9,393,472
Switzerland		—		1,418,417		—		1,418,417
United States		111,513,474		—		—		111,513,474
Short-Term Investments		1,088,843		—		—		1,088,843
Total Investments	$	121,786,564	$	72,855,792	$	—	$	194,642,356

Notes to Portfolio of Investments (Unaudited) (Continued)

International Equity Fund
Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock*
Australia	$	—	$	1,388,075	$	—	$	1,388,075
Belgium		219,555		894,114		—		1,113,669
Canada		6,606,192		—		—		6,606,192
Denmark		—		142,856		—		142,856
Finland		—		2,156,867		—		2,156,867
France		—		9,915,963		—		9,915,963
Germany		—		9,161,065		—		9,161,065
Hong Kong		—		3,098,538		—		3,098,538
Ireland		417,629		644,146		—		1,061,775
Israel		295,350		—		—		295,350
Italy		23,288		92,413		—		115,701
Japan		—		17,549,578		—		17,549,578
Luxembourg		—		395,564		—		395,564
Netherlands		—		4,006,038		—		4,006,038
Norway		—		614,874		—		614,874
Republic of Korea		—		464,250		—		464,250
Singapore		—		408,699		—		408,699
Spain		—		4,095,096		—		4,095,096
Sweden		—		2,944,967		—		2,944,967
Switzerland		—		7,633,231		—		7,633,231
United Kingdom		—		20,109,381		—		20,109,381
United States		2,569,453		13,794,079		—		16,363,532
Preferred Stock*
Germany		—		175,465		—		175,465
Short-Term Investments		172,360		3,077,113		—		3,249,473
Total Investments	$	10,303,827	$	102,762,372	$	—	$	113,066,199

Notes to Portfolio of Investments (Unaudited) (Continued)

Strategic Emerging Markets Fund
Asset Investments	Level 1		Level 2		Level 3			Total
Common Stock*
Brazil	$	6,075,561	$	—	$	—		$	6,075,561
Chile		512,442		534,182		—			1,046,624
China		10,348,612		8,176,141		—			18,524,753
France		—		4,470,963		—			4,470,963
Hong Kong		—		56,960		—			56,960
India		—		17,022,014		—			17,022,014
Indonesia		—		1,625,911		—			1,625,911
Italy		214,174		1,885,710		—			2,099,884
Japan		—		2,429,805		—			2,429,805
Mexico		10,929,395		—		—			10,929,395
Netherlands		338,012		—		—			338,012
Peru		964,915		—		—			964,915
Philippines		—		1,525,212		—			1,525,212
Poland		—		622,390		—			622,390
Portugal		—		2,313,669		—			2,313,669
Republic of Korea		—		8,631,305		—			8,631,305
Russia		—		—		—	+		—
South Africa		—		1,203,039		—			1,203,039
Switzerland		—		1,687,857		—			1,687,857
Taiwan		—		15,466,354		—			15,466,354
Turkey		—		1,051,107		—			1,051,107
United Arab Emirates		—		322,760		—			322,760
United Kingdom		—		1,369,858		—			1,369,858
Preferred Stock
Brazil		986,093		—		—			986,093
Rights		1,608		—		—			1,608
Short-Term Investments		1,676,585		4,007,019		—			5,683,604
Total Investments	$	32,047,397	$	74,402,256	$	—		$	106,449,653

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

+ Represents a security at $0 value as of June 30, 2024.

Notes to Portfolio of Investments (Unaudited) (Continued)

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/Semi-annual 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, 2024, the Funds' collateral was equal to or greater than 100% of the market value of securities on loan and all of the Funds' cash collateral was invested in the State Street Navigator Securities Lending Government Money Market Portfolio.

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

Notes to Portfolio of Investments (Unaudited) (Continued)

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 U.S. 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 U.S. federal income tax.

Dividends and Distributions to Shareholders

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

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, 2024, 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 U.S. 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	$	176,414,972	$	551,439	$	(12,649,707	)	$	(12,098,268	)
Inflation-Protected and Income Fund		246,622,050		1,103,721		(6,733,817	)		(5,630,096	)
Core Bond Fund		774,110,529		3,283,859		(55,930,290	)		(52,646,431	)
Diversified Bond Fund		149,687,377		748,281		(12,322,276	)		(11,573,995	)
High Yield Fund		404,908,853		5,836,860		(14,521,547	)		(8,684,687	)
Balanced Fund		96,451,722		14,119,339		(4,528,724	)		9,590,615
Disciplined Value Fund		34,645,088		5,187,898		(999,521	)		4,188,377
Main Street Fund		50,545,883		19,672,386		(1,316,236	)		18,356,150
Disciplined Growth Fund		141,200,036		59,886,312		(1,961,030	)		57,925,282
Small Cap Opportunities Fund		333,975,395		71,792,317		(15,439,562	)		56,352,755
Global Fund		100,708,105		98,465,968		(4,531,717	)		93,934,251
International Equity Fund		109,725,087		13,463,429		(10,122,317	)		3,341,112
Strategic Emerging Markets Fund		99,235,399		13,073,541		(5,859,287	)		7,214,254

4. New Accounting Pronouncements

In December 2022, FASB issued Accounting Standards Update 2022-06, "Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848" ("ASU 2022-06"). ASU 2022-06 is an update of ASU 2020-04, which responded to concerns about structural risks of interbank offered rates, and particularly the risk of cessation of LIBOR. ASU 2020-04 provides optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. ASU 2020-04 is elective and applies to all entities, subject to meeting certain criteria, that have contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. ASU 2022-06 defers the sunset date provision included in Topic 848. The amendments in this update are effective immediately through December 31, 2024, for all entities. Management does not expect ASU 2022-06 to have a material impact on the financial statements.

Notes to Portfolio of Investments (Unaudited) (Continued)

5. 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.

6. Subsequent Events

Effective August 23, 2024 (the “Termination Date”), the Main Street Fund (the “Fund”) was dissolved pursuant to a Plan of Liquidation, approved by the Trustees. Shareholders of the various classes of shares of the Fund received proceeds in proportion to the number of shares of such class held by each of them on the Termination Date.