MML Series Investment Fund II NPORT-P MML Small Cap Equity Fund (Mar 2023 report)

MML Blend Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
MUTUAL FUNDS — 100.3%
Diversified Financial Services — 100.3%
iShares 5-10 Year Investment Grade Corporate Bond ETF		505,411	$	25,917,476
iShares Core S&P 500 ETF		444,282		182,635,445
iShares Core S&P Mid-Cap ETF		55,741		13,944,169
iShares Core S&P Small-Cap ETF		63,009		6,092,970
iShares Core S&P Total US Stock Market ETF		2,208,454		199,975,510
iShares Core Total USD Bond Market ETF		2,204,412		101,733,614
iShares Core U.S. Aggregate Bond ETF		1,019,749		101,607,790
iShares iBoxx High Yield Corporate Bond ETF (a)		341,948		25,834,171
State Street Navigator Securities Lending Government Money Market Portfolio (b)		2,628,663		2,628,663
TOTAL MUTUAL FUNDS (Cost $659,846,748)				660,369,808
TOTAL LONG-TERM INVESTMENTS (Cost $659,846,748)				660,369,808
	Principal Amount
SHORT-TERM INVESTMENTS — 0.3%
Repurchase Agreement — 0.3%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (c)	$	1,612,368		1,612,368
TOTAL SHORT-TERM INVESTMENTS (Cost $1,612,368)				1,612,368
TOTAL INVESTMENTS — 100.6% (Cost $661,459,116) (d)				661,982,176
Other Assets/(Liabilities) — (0.6)%				(3,710,188)
NET ASSETS — 100.0%			$	658,271,988

Abbreviation Legend

ETF Exchange-Traded Fund

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 March 31, 2023, was $2,570,815 or 0.39% of net assets. (Note 2).

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

(c) Maturity value of $1,612,562. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $1,644,708.

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

MML Dynamic Bond Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 100.6%
BANK LOANS — 3.6%
Airlines — 0.1%
Air Canada, 2021 Term Loan B, 3 mo. USD LIBOR + 3.500%
8.369% VRN 8/11/28	$	74,438	$	74,135
Kestrel Bidco, Inc., Term Loan B, 1 mo. SOFR CME + 3.000%
7.859% VRN 12/11/26		67,664		64,704
United Airlines, Inc., 2021 Term Loan B, 3 mo. USD LIBOR + 3.750%
8.568% VRN 4/21/28		83,300		82,571
				221,410
Auto Parts & Equipment — 0.1%
Clarios Global LP, 2021 USD Term Loan B, 1 mo. USD LIBOR + 3.250%
8.090% VRN 4/30/26		129,445		128,474
Beverages — 0.1%
Triton Water Holdings, Inc., Term Loan, 3 mo. USD LIBOR + 3.500%
8.659% VRN 3/31/28		217,205		194,127
Chemicals — 0.1%
Diamond (BC) B.V., 2021 Term Loan B, 3 mo. USD LIBOR + 2.750%
7.575% VRN 9/29/28		172,813		172,030
Kraton Corp., 2022 USD Term Loan, 3 mo. SOFR CME + 3.250%
8.544% VRN 3/15/29		74,250		73,833
Olympus Water U.S. Holding Corp., 2021 USD Term Loan B, 3 mo. USD LIBOR + 3.750%
8.938% VRN 11/09/28		98,750		93,331
				339,194
Commercial Services — 0.2%
Allied Universal Holdco LLC, 2021 USD Incremental Term Loan B, 1 mo. USD SOFR CME + 3.750%
8.657% VRN 5/12/28		229,252		217,340
CHG Healthcare Services, Inc., 2021 Term Loan, 1 mo. USD LIBOR + 3.250%
8.090% VRN 9/29/28		132,975		131,542
Mister Car Wash Holdings, Inc., 2019 Term Loan B, 3 mo. USD SOFR CME + 3.000%
7.991% VRN 5/14/26		47,781		47,430
Prime Security Services Borrower LLC, 2021 Term Loan, 3 mo. USD LIBOR + 2.750%
7.517% VRN 9/23/26		141,751		141,131
				537,443
Computers — 0.1%
Magenta Buyer LLC, 2021 USD 1st Lien Term Loan, 3 mo. USD LIBOR + 4.750%
9.580% VRN 7/27/28		247,965		203,597

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Peraton Corp., Term Loan B, 1 mo. USD LIBOR + 3.750%
8.590% VRN 2/01/28	$	65,583	$	64,627
				268,224
Diversified Financial Services — 0.2%
Blackhawk Network Holdings, Inc., 2018 1st Lien Term Loan, 3 mo. USD SOFR CME + 3.000%
7.891% VRN 6/15/25		112,479		110,712
Castlelake Aviation Ltd., Term Loan B, 3 mo. USD LIBOR + 2.750%
7.616% VRN 10/22/26		102,926		101,800
Citadel Securities LP, 2021 Term Loan B, 1 mo. USD SOFR CME + 2.500%
7.422% VRN 2/02/28		167,452		165,673
Deerfield Dakota Holding LLC, 2020 USD Term Loan B, 1 mo. USD SOFR CME + 3.750%
8.648% VRN 4/09/27		76,903		74,340
Focus Financial Partners LLC, 2022 Term Loan B5, 1 mo. USD SOFR CME + 3.250%
8.057% VRN 6/30/28		109,450		108,204
				560,729
Engineering & Construction — 0.1%
Brown Group Holding LLC, Term Loan B, 1 mo. USD LIBOR + 2.250%
7.407% VRN 6/07/28		276,987		274,217
Entertainment — 0.3%
Caesars Entertainment Corp., Term Loan B, 1 mo. USD SOFR CME + 3.250%
8.157% VRN 2/06/30		20,000		19,872
PCI Gaming Authority, Term Loan, 1 mo. USD LIBOR + 2.500%
7.340% VRN 5/29/26		260,000		259,495
Scientific Games International, Inc., 2022 USD Term Loan, 1 mo. USD SOFR CME + 3.000%
7.960% VRN 4/14/29		267,975		265,518
UFC Holdings LLC, 2021 Term Loan B, 3 mo. USD LIBOR + 2.750%
7.570% VRN 4/29/26		144,329		143,404
				688,289
Food — 0.1%
CHG PPC Parent LLC, 2021 Term Loan, 1 mo. USD LIBOR + 3.000%
7.875% VRN 12/08/28		118,800		117,315
Health Care – Products — 0.1%
Medline Borrower LP, USD Term Loan B, 1 mo. USD LIBOR + 3.250%
8.090% VRN 10/23/28		63,104		61,457
Sotera Health Holdings LLC, 2021 Term Loan, 3 mo. USD LIBOR + 2.750%
7.575% VRN 12/11/26		270,000		259,538
				320,995
Health Care – Services — 0.2%
Aveanna Healthcare LLC
2021 Term Loan B, 1 mo. USD LIBOR
4.250% FRN 7/17/28 (a)		139,852		118,274
2021 Delayed Draw Term Loan, 1 mo. USD LIBOR
4.250% FRN 7/17/28 (a) (b)		2,959		2,502

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Global Medical Response, Inc., 2020 Term Loan B, 3 mo. USD LIBOR + 4.250%
9.236% VRN 10/02/25	$	267,266	$	186,196
ICON Luxembourg SARL, LUX Term Loan, 3 mo. SOFR CME + 2.250%
7.410% VRN 7/03/28		54,487		54,306
Phoenix Guarantor, Inc., 2020 Term Loan B, 1 mo. USD LIBOR + 3.250%
8.090% VRN 3/05/26		167,522		162,885
				524,163
Housewares — 0.1%
Solis IV B.V., USD Term Loan B1, 3 mo. SOFR CME + 3.500%
8.373% VRN 2/26/29		248,125		222,116
Insurance — 0.2%
Acrisure LLC
2020 Term Loan B, 1 mo. USD LIBOR + 3.500%
8.340% VRN 2/15/27		120,633		116,511
2021 First Lien Term Loan B, 1 mo. USD LIBOR + 4.250%
9.090% VRN 2/15/27		123,438		120,622
AmWINS Group, Inc.
2021 Term Loan B, 1 mo. USD LIBOR + 2.250%
7.109% VRN 2/19/28		37,880		37,376
2023 Incremental Term Loan B, 1 mo. SOFR CME + 2.750%
7.657% VRN 2/19/28		29,850		29,663
Asurion LLC
2020 Term Loan B8, 1 mo. USD LIBOR + 3.250%
8.090% VRN 12/23/26		151,513		140,204
2021 Term Loan B9, 1 mo. USD LIBOR + 3.250%
8.090% VRN 7/31/27		73,684		67,421
				511,797
Leisure Time — 0.1%
Alterra Mountain Co., 2021 Series B-2 Consenting Term Loan, 1 mo. USD LIBOR + 3.500%
8.340% VRN 8/17/28		157,565		156,777
Lodging — 0.1%
Station Casinos LLC, 2020 Term Loan B, 1 mo. USD LIBOR + 2.250%
7.100% VRN 2/08/27		147,447		146,039
Machinery – Diversified — 0.1%
Ali Group North America Corp., 2021 Term Loan B, 1 mo. USD SOFR CME + 2.000%
6.806% VRN 7/30/29		94,833		93,315
Vertical U.S. Newco, Inc., Term Loan B, 6 mo. USD LIBOR + 3.500%
8.602% VRN 7/30/27		195,545		190,228
				283,543
Media — 0.1%
DirecTV Financing LLC, Term Loan, 1 mo. USD LIBOR + 5.000%
9.840% VRN 8/02/27		63,253		60,744
Nexstar Broadcasting, Inc., 2019 Term Loan B4, 1 mo. USD LIBOR + 2.500%
7.340% VRN 9/18/26		200,753		200,051
				260,795

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Packaging & Containers — 0.0%
TricorBraun Holdings, Inc., 2021 Term Loan, 1 mo. USD LIBOR + 3.250%
8.090% VRN 3/03/28	$	68,796	$	67,064
Pharmaceuticals — 0.2%
Gainwell Acquisition Corp., Term Loan B, 3 mo. SOFR CME + 4.000%
8.998% VRN 10/01/27		165,060		157,220
Jazz Financing Lux SARL, USD Term Loan, 1 mo. USD LIBOR + 3.500%
8.340% VRN 5/05/28		199,288		198,334
PRA Health Sciences, Inc., US Term Loan, 3 mo. SOFR CME + 2.250%
7.409% VRN 7/03/28		14,434		14,386
				369,940
Pipelines — 0.1%
CQP Holdco LP, 2021 Term Loan B, 3 mo. USD LIBOR + 3.500%
8.659% VRN 6/05/28		215,315		213,405
Traverse Midstream Partners LLC, 2017 Term Loan, 3 mo. USD SOFR CME + 3.750%
8.726% VRN 2/16/28		46,952		46,091
				259,496
Retail — 0.2%
Great Outdoors Group LLC, 2021 Term Loan B1, 1 mo. USD LIBOR + 3.750%
8.590% VRN 3/06/28		151,133		148,961
Harbor Freight Tools USA, Inc., 2021 Term Loan B, 1 mo. USD LIBOR + 2.750%
7.590% VRN 10/19/27		117,165		113,269
PetSmart, Inc., 2021 Term Loan B, 1 mo. SOFR CME + 3.750%
8.657% VRN 2/11/28		68,949		68,375
Pilot Travel Centers LLC, 2021 Term Loan B, 1 mo. USD SOFR CME + 2.000%
6.907% VRN 8/04/28		18,301		18,224
				348,829
Software — 0.5%
Athenahealth Group, Inc., 2022 Term Loan B, 1 mo. SOFR CME + 3.500%
8.259% VRN 2/15/29		152,440		142,531
Camelot U.S. Acquisition LLC, 2020 Incremental Term Loan B, 1 mo. USD LIBOR + 3.000%
7.840% VRN 10/30/26		99,986		99,705
Hyland Software, Inc., 2018 1st Lien Term Loan, 1 mo. USD LIBOR + 3.500%
8.340% VRN 7/01/24		217,588		214,807
Mitchell International, Inc., 2021 Term Loan B, 1 mo. USD LIBOR + 3.750%
8.502% VRN 10/15/28		257,400		242,834
Rackspace Technology Global, Inc., 2021 Term Loan B, 3 mo. USD LIBOR + 2.750%
7.595% VRN 2/15/28		277,172		147,816
The The Ultimate Software Group, Inc., Term Loan B, 3 mo. USD LIBOR + 3.750%
8.575% VRN 5/04/26		120,913		118,782
Zelis Healthcare Corp., 2021 Term Loan, 1 mo. USD LIBOR + 3.500%
8.340% VRN 9/30/26		191,396		190,321
				1,156,796

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Telecommunications — 0.1%
Intelsat Jackson Holdings S.A., 2021 Exit Term Loan B, 3 mo. USD SOFR + 4.250%
9.082% VRN 2/01/29	$	118,700	$	117,217
Transportation — 0.1%
Genesee & Wyoming, Inc., Term Loan, 3 mo. USD SOFR CME + 2.000%
6.998% VRN 12/30/26		206,055		204,402
TOTAL BANK LOANS (Cost $8,677,209)				8,279,391
CORPORATE DEBT — 42.3%
Advertising — 0.0%
Clear Channel Outdoor Holdings, Inc.
7.500% 6/01/29 (c) (d)		95,000		68,638
Aerospace & Defense — 1.6%
The Boeing Co.
2.196% 2/04/26		300,000		278,427
2.800% 3/01/27		290,000		265,832
2.950% 2/01/30		270,000		238,123
3.200% 3/01/29		300,000		272,919
3.250% 2/01/35		330,000		269,304
3.750% 2/01/50		140,000		105,723
5.705% 5/01/40		130,000		131,336
5.805% 5/01/50		350,000		351,034
5.930% 5/01/60		50,000		49,766
General Dynamics Corp.
4.250% 4/01/40		20,000		18,859
4.250% 4/01/50		50,000		46,595
L3 Harris Technologies, Inc.
5.054% 4/27/45		80,000		76,232
Lockheed Martin Corp.
3.550% 1/15/26		50,000		49,487
3.900% 6/15/32		50,000		48,570
4.150% 6/15/53		320,000		289,799
Northrop Grumman Corp.
2.930% 1/15/25		160,000		154,850
3.250% 1/15/28		290,000		275,185
5.150% 5/01/40		320,000		323,359
Raytheon Technologies Corp.
2.250% 7/01/30		110,000		94,153
3.030% 3/15/52		240,000		173,028
4.125% 11/16/28		160,000		157,535
4.500% 6/01/42		80,000		75,566
				3,745,682
Agriculture — 0.7%
Altria Group, Inc.
2.450% 2/04/32		140,000		110,136
4.400% 2/14/26		190,000		188,683
5.800% 2/14/39		240,000		234,087
5.950% 2/14/49		160,000		150,868
BAT Capital Corp.
3.462% 9/06/29		525,000		463,621
4.540% 8/15/47		170,000		126,208

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Cargill, Inc.
1.375% 7/23/23 (c) (d)	$	180,000	$	177,828
Philip Morris International, Inc.
1.125% 5/01/23		190,000		189,412
4.500% 3/20/42		80,000		69,471
				1,710,314
Airlines — 0.8%
Delta Air Lines, Inc.
7.000% 5/01/25 (c)		950,000		973,309
Delta Air Lines, Inc./SkyMiles IP Ltd.
4.750% 10/20/28 (c)		550,000		530,071
Mileage Plus Holdings LLC / Mileage Plus Intellectual Property Assets Ltd.
6.500% 6/20/27 (c)		280,497		279,594
United Airlines, Inc.
4.625% 4/15/29 (c)		65,000		58,908
				1,841,882
Apparel — 0.2%
NIKE, Inc.
2.850% 3/27/30		280,000		257,265
3.250% 3/27/40		130,000		109,483
3.375% 3/27/50 (d)		40,000		32,830
				399,578
Auto Manufacturers — 1.2%
Ford Motor Co.
3.250% 2/12/32		1,660,000		1,305,061
6.100% 8/19/32 (d)		90,000		86,926
General Motors Co.
5.600% 10/15/32		285,000		277,811
General Motors Financial Co., Inc.
2.400% 10/15/28		275,000		235,008
Hyundai Capital America
1.800% 10/15/25 (c)		55,000		50,416
Nissan Motor Co. Ltd.
3.043% 9/15/23 (c)		200,000		197,016
3.522% 9/17/25 (c)		410,000		387,967
4.345% 9/17/27 (c)		300,000		281,843
				2,822,048
Banks — 12.0%
ABN AMRO Bank NV
4.750% 7/28/25 (c)		260,000		250,939
Banco Santander SA
3.496% 3/24/25		600,000		576,779
3 mo. USD LIBOR + 1.120% 5.926% FRN 4/12/23		200,000		200,000
Bank of America Corp.
5 year CMT + 1.200% 2.482% VRN 9/21/36		520,000		392,012
SOFR + 1.210% 2.572% VRN 10/20/32		190,000		155,181
SOFR + 1.330% 2.972% VRN 2/04/33		1,080,000		908,760
3 mo. USD LIBOR + 1.370% 3.593% VRN 7/21/28		1,830,000		1,718,222
4.000% 1/22/25		700,000		683,788
3 mo. USD LIBOR + 3.150% 4.083% VRN 3/20/51		300,000		245,127
4.200% 8/26/24		380,000		373,205
3 mo. USD LIBOR + 3.705% 6.250% VRN (e)		170,000		165,962

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Bank of Montreal 5 year USD Swap + 1.432%
3.803% VRN 12/15/32	$	350,000	$	315,763
The Bank of Nova Scotia 5 year CMT + 2.050%
4.588% VRN 5/04/37		440,000		387,583
Barclays PLC 3 mo. USD LIBOR + 1.380%
6.252% FRN 5/16/24		425,000		423,482
BNP Paribas SA
SOFR + 2.074% 2.219% VRN 6/09/26 (c)		200,000		183,571
SOFR + 1.507% 3.052% VRN 1/13/31 (c)		390,000		334,135
4.625% 3/13/27 (c)		260,000		248,104
1 year CMT + 1.450% 5.125% VRN 1/13/29 (c)		350,000		349,488
BPCE SA
1.000% 1/20/26 (c)		250,000		222,634
Citigroup, Inc.
SOFR + .694% 2.014% VRN 1/25/26		95,000		89,401
SOFR + 1.280% 3.070% VRN 2/24/28		995,000		924,370
SOFR + 1.939% 3.785% VRN 3/17/33		580,000		519,496
3 mo. TSFR + 1.600% 3.980% VRN 3/20/30		850,000		791,285
4.650% 7/30/45		380,000		345,319
3 mo. TSFR + 4.167% 5.950% VRN (e)		160,000		148,857
3 mo. USD LIBOR + 1.100% 5.977% FRN 5/17/24		545,000		545,002
Cooperatieve Rabobank UA
4.375% 8/04/25		470,000		454,296
Credit Agricole SA SOFR + 1.676%
1.907% VRN 6/16/26 (c)		270,000		247,701
Credit Suisse AG
7.500% 2/15/28		350,000		370,125
7.950% 1/09/25		290,000		294,788
Credit Suisse Group AG
SOFR + 2.044% 2.193% VRN 6/05/26 (c)		480,000		424,604
SOFR + 1.730% 3.091% VRN 5/14/32 (c)		640,000		514,541
SOFR + 3.920% 6.537% VRN 8/12/33 (c)		300,000		308,250
Danske Bank A/S
5.375% 1/12/24 (c)		240,000		237,772
The Goldman Sachs Group, Inc.
SOFR + 1.472% 2.908% VRN 7/21/42		240,000		171,467
3.000% 3/15/24		550,000		536,900
3.500% 11/16/26		270,000		257,730
3 mo. USD LIBOR + 1.301% 4.223% VRN 5/01/29		500,000		477,000
4.250% 10/21/25		270,000		261,973
4.750% 10/21/45		300,000		276,626
5.150% 5/22/45		290,000		274,174
SOFR + .820% 5.625% FRN 9/10/27		165,000		160,822
3 mo. USD LIBOR + 1.170% 6.034% FRN 5/15/26		555,000		550,337
HSBC Holdings PLC
SOFR + 1.929% 2.099% VRN 6/04/26		510,000		467,940
SOFR + 2.530% 4.762% VRN 3/29/33		200,000		180,543
3 mo. USD LIBOR + 1.380% 6.534% FRN 9/12/26		510,000		505,665
JP Morgan Chase & Co.
SOFR + 1.015% 2.069% VRN 6/01/29		215,000		185,856
SOFR + 2.040% 2.522% VRN 4/22/31		320,000		273,388
SOFR + 1.250% 2.580% VRN 4/22/32		270,000		227,095
SOFR + .915% 2.595% VRN 2/24/26		160,000		151,560
SOFR + 1.260% 2.963% VRN 1/25/33		265,000		226,428
SOFR + 2.440% 3.109% VRN 4/22/51		110,000		77,557
3.875% 9/10/24		540,000		530,586
3 mo. USD LIBOR + 1.330% 4.452% VRN 12/05/29		940,000		913,484

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Lloyds Banking Group PLC 3 mo. USD LIBOR + 1.205%
3.574% VRN 11/07/28	$	400,000	$	365,549
Mitsubishi UFJ Financial Group, Inc.
1.412% 7/17/25		435,000		398,377
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		520,000		394,772
SOFR + 1.290% 2.943% VRN 1/21/33		115,000		97,355
SOFR + 1.160% 3.620% VRN 4/17/25		270,000		264,979
SOFR + 1.610% 4.210% VRN 4/20/28		205,000		198,792
National Securities Clearing Corp.
1.500% 4/23/25 (c)		250,000		233,397
NatWest Markets PLC
0.800% 8/12/24 (c)		200,000		187,077
Royal Bank of Canada
1.150% 6/10/25		310,000		285,274
Santander Holdings USA, Inc. SOFR + 1.249%
2.490% VRN 1/06/28		135,000		116,624
The Toronto-Dominion Bank
1.150% 6/12/25		300,000		275,986
UBS Group AG
4.253% 3/23/28 (c)		340,000		315,071
5 year USD Swap + 4.344% 7.000% VRN (c) (e)		500,000		474,355
US Bancorp
1.450% 5/12/25		280,000		257,660
Wells Fargo & Co.
SOFR + 2.000% 2.188% VRN 4/30/26		200,000		187,329
3 mo. TSFR + 1.432% 2.879% VRN 10/30/30		235,000		203,972
3.000% 10/23/26		430,000		401,869
3 mo. USD LIBOR + 1.170% 3.196% VRN 6/17/27		245,000		230,179
SOFR + 1.500% 3.350% VRN 3/02/33		360,000		311,811
SOFR + 2.130% 4.611% VRN 4/25/53		2,050,000		1,815,384
				28,073,485
Beverages — 0.7%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc.
3.650% 2/01/26		680,000		666,936
Anheuser-Busch InBev Worldwide, Inc.
3.500% 6/01/30		130,000		122,681
4.600% 4/15/48		334,000		315,390
The Coca-Cola Co.
1.450% 6/01/27		250,000		226,628
2.600% 6/01/50		80,000		56,962
Molson Coors Beverage Co.
3.000% 7/15/26		50,000		47,194
4.200% 7/15/46		50,000		40,999
PepsiCo, Inc.
1.625% 5/01/30		170,000		143,751
				1,620,541
Biotechnology — 0.1%
Gilead Sciences, Inc.
3.700% 4/01/24		130,000		128,475
Chemicals — 0.4%
Equate Petrochemical BV
4.250% 11/03/26 (c)		240,000		232,526

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
OCP SA
3.750% 6/23/31 (c)	$	260,000	$	211,588
5.125% 6/23/51 (c)		220,000		159,729
Orbia Advance Corp. SAB de CV
2.875% 5/11/31 (c)		490,000		393,470
				997,313
Commercial Services — 0.4%
Cintas Corp. No 2
3.700% 4/01/27		160,000		155,016
DP World Ltd.
5.625% 9/25/48 (c)		330,000		318,523
PayPal Holdings, Inc.
1.650% 6/01/25		270,000		253,335
Triton Container International Ltd.
1.150% 6/07/24 (c)		90,000		84,619
Triton Container International Ltd. / TAL International Container Corp.
3.250% 3/15/32		160,000		126,236
				937,729
Computers — 0.3%
Apple, Inc.
2.450% 8/04/26		480,000		456,576
International Business Machines Corp.
3.000% 5/15/24		320,000		313,982
				770,558
Cosmetics & Personal Care — 0.2%
Haleon U.S. Capital LLC
3.375% 3/24/29		260,000		239,384
Kenvue, Inc.
4.900% 3/22/33 (c)		180,000		185,930
The Procter & Gamble Co.
3.000% 3/25/30		100,000		93,741
				519,055
Distribution & Wholesale — 0.0%
H&E Equipment Services, Inc.
3.875% 12/15/28 (c)		30,000		26,290
Diversified Financial Services — 1.1%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
2.450% 10/29/26		170,000		152,748
3.000% 10/29/28		160,000		139,696
3.150% 2/15/24		190,000		184,220
3.400% 10/29/33		420,000		340,780
Air Lease Corp.
1.875% 8/15/26		170,000		150,503
5.300% 2/01/28		120,000		118,336
American Express Co.
3.375% 5/03/24		130,000		127,385
4.050% 5/03/29		210,000		204,599
Aviation Capital Group LLC
1.950% 9/20/26 (c)		395,000		341,579
Avolon Holdings Funding Ltd.
3.250% 2/15/27 (c)		370,000		328,718

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CI Financial Corp.
4.100% 6/15/51	$	115,000	$	69,344
Mastercard, Inc.
3.850% 3/26/50		50,000		44,135
Nasdaq, Inc.
3.950% 3/07/52		45,000		34,791
Visa, Inc.
3.150% 12/14/25		200,000		194,114
4.300% 12/14/45		160,000		153,477
				2,584,425
Electric — 1.0%
Berkshire Hathaway Energy Co.
4.600% 5/01/53		255,000		231,220
Consolidated Edison Co. of New York, Inc.
3.350% 4/01/30		70,000		64,451
3.950% 4/01/50		50,000		41,231
Duke Energy Carolinas LLC
2.850% 3/15/32		35,000		30,384
Duke Energy Corp.
3.950% 8/15/47		355,000		280,735
Duke Energy Ohio, Inc.
3.650% 2/01/29		260,000		245,814
Exelon Corp.
4.100% 3/15/52		65,000		53,173
Monongahela Power Co.
5.400% 12/15/43 (c)		145,000		146,908
Pacific Gas and Electric Co.
2.500% 2/01/31		255,000		206,453
Sierra Pacific Power Co.
2.600% 5/01/26		1,000,000		942,765
				2,243,134
Entertainment — 0.4%
Warnermedia Holdings, Inc.
3.755% 3/15/27 (c)		250,000		235,360
4.279% 3/15/32 (c)		430,000		383,271
5.050% 3/15/42 (c)		20,000		16,681
5.141% 3/15/52 (c)		300,000		242,221
6.412% 3/15/26		100,000		100,478
				978,011
Environmental Controls — 0.1%
Republic Services, Inc.
2.500% 8/15/24		230,000		222,736
Food — 0.4%
Danone SA
2.589% 11/02/23 (c)		320,000		315,140
Mars, Inc.
2.700% 4/01/25 (c)		140,000		134,631
3.200% 4/01/30 (c)		80,000		73,610
Mondelez International, Inc.
1.500% 5/04/25		390,000		364,758
				888,139

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Forest Products & Paper — 0.2%
Suzano Austria GmbH
3.125% 1/15/32 (d)	$	80,000	$	65,493
3.750% 1/15/31		430,000		374,243
				439,736
Gas — 0.2%
The Brooklyn Union Gas Co.
4.487% 3/04/49 (c) (d)		435,000		350,765
The East Ohio Gas Co.
3.000% 6/15/50 (c)		45,000		29,994
				380,759
Health Care – Products — 0.1%
Abbott Laboratories
3.750% 11/30/26		140,000		138,866
4.750% 11/30/36		80,000		82,982
4.900% 11/30/46		100,000		102,652
				324,500
Health Care – Services — 0.8%
Centene Corp.
2.500% 3/01/31		285,000		230,793
Elevance Health, Inc.
2.375% 1/15/25		210,000		200,965
3.650% 12/01/27		140,000		135,138
HCA, Inc.
4.125% 6/15/29		220,000		205,936
Health Care Service Corp.
3.200% 6/01/50 (c)		145,000		104,895
Humana, Inc.
4.625% 12/01/42		140,000		125,747
UnitedHealth Group, Inc.
1.250% 1/15/26		240,000		220,147
2.300% 5/15/31		220,000		188,376
3.875% 8/15/59		300,000		243,870
4.000% 5/15/29		100,000		97,615
4.200% 5/15/32		80,000		78,287
				1,831,769
Home Builders — 0.1%
Lennar Corp.
4.500% 4/30/24		100,000		98,751
4.750% 11/29/27		40,000		39,517
				138,268
Insurance — 0.4%
Athene Global Funding SOFR + .560%
5.301% FRN 8/19/24 (c)		465,000		456,161
Berkshire Hathaway Finance Corp.
2.850% 10/15/50		150,000		105,383
3.850% 3/15/52		90,000		74,973
New York Life Global Funding
0.950% 6/24/25 (c)		100,000		91,976

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Principal Life Global Funding II
1.250% 6/23/25 (c)	$	110,000	$	100,542
Prudential Financial, Inc.
3.905% 12/07/47		190,000		149,828
Teachers Insurance & Annuity Association of America
4.900% 9/15/44 (c)		80,000		73,803
				1,052,666
Internet — 1.0%
Alphabet, Inc.
1.900% 8/15/40		100,000		69,972
2.050% 8/15/50		60,000		37,982
Amazon.com, Inc.
3.150% 8/22/27		500,000		479,498
3.600% 4/13/32		470,000		446,858
3.875% 8/22/37		190,000		176,643
3.950% 4/13/52		280,000		247,336
Prosus NV
3.061% 7/13/31 (c)		570,000		448,571
3.832% 2/08/51 (c)		210,000		134,246
4.027% 8/03/50 (c)		310,000		203,063
				2,244,169
Iron & Steel — 0.1%
Vale Overseas Ltd.
6.875% 11/21/36		170,000		177,637
Lodging — 0.5%
Las Vegas Sands Corp.
3.200% 8/08/24		860,000		833,338
Sands China Ltd.
5.625% STEP 8/08/25		390,000		379,609
				1,212,947
Machinery – Diversified — 0.2%
Deere & Co.
3.750% 4/15/50		260,000		229,682
Otis Worldwide Corp.
2.056% 4/05/25		140,000		132,092
				361,774
Media — 2.0%
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 1/15/34 (c)		65,000		50,838
4.500% 6/01/33 (c)		810,000		652,091
4.750% 3/01/30 (c)		105,000		90,971
4.750% 2/01/32 (c)		65,000		54,590
Charter Communications Operating LLC/Charter Communications Operating Capital
3.500% 3/01/42		240,000		161,875
4.200% 3/15/28		560,000		529,815
4.400% 4/01/33		290,000		257,159
4.908% 7/23/25		240,000		237,455
5.250% 4/01/53		450,000		363,529
5.500% 4/01/63		150,000		121,326
Comcast Corp.
2.887% 11/01/51		550,000		373,890

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
3.400% 4/01/30	$	525,000	$	490,399
3.750% 4/01/40		120,000		103,034
3.950% 10/15/25		155,000		153,156
4.150% 10/15/28		270,000		266,817
CSC Holdings LLC
6.500% 2/01/29 (c)		700,000		576,233
DISH DBS Corp.
5.125% 6/01/29		60,000		32,024
5.750% 12/01/28 (c)		70,000		52,238
Fox Corp.
5.476% 1/25/39		90,000		86,065
				4,653,505
Mining — 1.0%
Anglo American Capital PLC
4.750% 4/10/27 (c)		230,000		224,852
Barrick North America Finance LLC
5.700% 5/30/41		80,000		83,839
5.750% 5/01/43		80,000		84,146
BHP Billiton Finance USA Ltd.
5.000% 9/30/43		100,000		101,110
Freeport-McMoRan, Inc.
4.625% 8/01/30		120,000		113,202
5.450% 3/15/43		470,000		439,651
Glencore Funding LLC
1.625% 4/27/26 (c)		240,000		217,026
3.375% 9/23/51 (c)		175,000		121,099
4.000% 3/27/27 (c)		140,000		134,688
4.125% 3/12/24 (c)		270,000		267,084
Southern Copper Corp.
5.250% 11/08/42		450,000		432,389
				2,219,086
Miscellaneous - Manufacturing — 0.2%
3M Co.
3.050% 4/15/30 (d)		290,000		264,834
3.700% 4/15/50 (d)		180,000		146,868
				411,702
Oil & Gas — 3.2%
BP Capital Markets America, Inc.
2.939% 6/04/51		175,000		120,860
3.001% 3/17/52		230,000		161,454
3.119% 5/04/26		410,000		394,142
3.633% 4/06/30		120,000		113,835
Chesapeake Energy Corp.
5.875% 2/01/29 (c)		100,000		95,189
Chevron Corp.
1.995% 5/11/27		440,000		402,681
Continental Resources, Inc.
2.268% 11/15/26 (c)		195,000		173,033
5.750% 1/15/31 (c)		250,000		240,101
Coterra Energy, Inc.
3.900% 5/15/27		230,000		219,209
4.375% 3/15/29		220,000		208,908

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Devon Energy Corp.
5.000% 6/15/45	$	440,000	$	391,014
5.600% 7/15/41		140,000		134,044
5.850% 12/15/25		120,000		121,855
Diamondback Energy, Inc.
3.250% 12/01/26		140,000		132,404
3.500% 12/01/29		160,000		146,045
Ecopetrol SA
5.875% 5/28/45		770,000		530,530
EOG Resources, Inc.
3.900% 4/01/35		200,000		183,212
4.150% 1/15/26		70,000		69,269
4.375% 4/15/30		60,000		59,785
4.950% 4/15/50		40,000		40,168
Exxon Mobil Corp.
2.992% 3/19/25		340,000		330,773
3.043% 3/01/26		130,000		126,088
3.482% 3/19/30		190,000		181,449
4.227% 3/19/40		205,000		191,737
4.327% 3/19/50		20,000		18,398
KazMunayGas National Co. JSC
5.375% 4/24/30 (c)		200,000		178,365
Marathon Petroleum Corp.
5.125% 12/15/26		185,000		186,541
Occidental Petroleum Corp.
6.125% 1/01/31		85,000		88,223
6.450% 9/15/36		50,000		52,447
6.625% 9/01/30		60,000		63,190
Petrobras Global Finance BV
5.999% 1/27/28 (d)		760,000		748,823
Pioneer Natural Resources Co.
1.900% 8/15/30		170,000		138,295
Reliance Industries Ltd.
3.625% 1/12/52 (c)		330,000		232,093
Shell International Finance BV
2.750% 4/06/30		240,000		218,462
2.875% 5/10/26		130,000		124,264
3.250% 4/06/50		330,000		250,679
Sinopec Group Overseas Development Ltd.
4.375% 4/10/24 (c)		330,000		327,825
Southwestern Energy Co.
4.750% 2/01/32		70,000		61,809
5.375% 2/01/29		75,000		70,687
				7,527,886
Oil & Gas Services — 0.1%
Halliburton Co.
2.920% 3/01/30		105,000		93,481
5.000% 11/15/45		100,000		90,883
				184,364
Pharmaceuticals — 3.0%
AbbVie, Inc.
2.600% 11/21/24		880,000		848,949
2.950% 11/21/26		260,000		247,168
3.200% 11/21/29		600,000		556,368
4.700% 5/14/45		25,000		23,391

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Bausch Health Cos., Inc.
6.125% 2/01/27 (c) (d)	$	50,000	$	32,360
Becton Dickinson & Co.
3.363% 6/06/24		80,000		78,500
Bristol-Myers Squibb Co.
4.350% 11/15/47		220,000		203,895
The Cigna Corp.
3.750% 7/15/23		160,000		159,227
4.125% 11/15/25		100,000		98,299
4.375% 10/15/28		760,000		747,779
4.900% 12/15/48		230,000		215,617
CVS Health Corp.
2.125% 9/15/31 (d)		330,000		269,018
4.250% 4/01/50		70,000		58,320
4.300% 3/25/28		580,000		568,850
5.050% 3/25/48		220,000		205,205
Johnson & Johnson
0.550% 9/01/25		120,000		110,246
0.950% 9/01/27		40,000		35,381
3.625% 3/03/37		320,000		295,573
Merck & Co., Inc.
0.750% 2/24/26		200,000		182,987
1.450% 6/24/30		120,000		99,140
Pfizer, Inc.
0.800% 5/28/25		270,000		250,293
1.700% 5/28/30		280,000		235,582
Teva Pharmaceutical Finance Netherlands III BV
3.150% 10/01/26		1,700,000		1,538,500
				7,060,648
Pipelines — 2.8%
Cameron LNG LLC
3.302% 1/15/35 (c)		150,000		128,881
Energy Transfer LP
3.900% 7/15/26		750,000		719,699
4.750% 1/15/26		240,000		236,839
6.250% 4/15/49		320,000		315,610
Enterprise Products Operating LLC
4.150% 10/16/28		1,030,000		998,462
EQM Midstream Partners LP
4.750% 1/15/31 (c)		140,000		116,200
Kinder Morgan Energy Partners LP
6.950% 1/15/38		355,000		396,351
Kinder Morgan, Inc.
4.300% 3/01/28		110,000		107,975
MPLX LP
4.700% 4/15/48		400,000		334,767
Targa Resources Corp.
4.950% 4/15/52		40,000		33,100
5.200% 7/01/27		170,000		168,190
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
4.875% 2/01/31		140,000		131,182
Tennessee Gas Pipeline Co. LLC
2.900% 3/01/30 (c)		30,000		25,974
Western Midstream Operating LP
3.350% STEP 2/01/25		240,000		229,271
4.300% STEP 2/01/30		900,000		820,368
5.500% STEP 2/01/50		1,740,000		1,487,439

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
The Williams Cos., Inc.
3.500% 10/15/51	$	125,000	$	88,240
3.750% 6/15/27		250,000		239,681
				6,578,229
Real Estate Investment Trusts (REITS) — 0.1%
Crown Castle, Inc.
3.300% 7/01/30		35,000		31,533
WEA Finance LLC/Westfield UK & Europe Finance PLC
3.750% 9/17/24 (c)		220,000		208,317
				239,850
Retail — 0.6%
Costco Wholesale Corp.
1.375% 6/20/27		190,000		170,226
1.600% 4/20/30		110,000		93,315
The Home Depot, Inc.
2.700% 4/15/30		70,000		63,207
3.300% 4/15/40		120,000		99,638
3.350% 4/15/50		260,000		200,535
Lowe's Cos., Inc.
4.500% 4/15/30		50,000		49,387
McDonald's Corp.
3.500% 7/01/27		300,000		290,053
3.600% 7/01/30		190,000		180,102
4.450% 3/01/47		230,000		209,545
Walmart, Inc.
1.500% 9/22/28		80,000		69,962
1.800% 9/22/31		40,000		33,804
				1,459,774
Semiconductors — 0.7%
Broadcom, Inc.
3.419% 4/15/33 (c)		396,000		330,688
Intel Corp.
1.600% 8/12/28		190,000		165,866
3.050% 8/12/51		100,000		68,043
5.125% 2/10/30		90,000		91,633
Micron Technology, Inc.
5.875% 2/09/33		120,000		120,892
NVIDIA Corp.
2.850% 4/01/30		90,000		81,895
3.500% 4/01/40		240,000		205,721
3.500% 4/01/50		40,000		32,631
3.700% 4/01/60		170,000		135,831
NXP BV / NXP Funding LLC / NXP USA, Inc.
3.875% 6/18/26		245,000		236,304
Texas Instruments, Inc.
1.750% 5/04/30		110,000		93,139
				1,562,643
Software — 0.6%
Microsoft Corp.
2.400% 8/08/26		770,000		732,238
2.921% 3/17/52		260,000		196,898
3.041% 3/17/62		70,000		52,248

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Oracle Corp.
3.850% 4/01/60	$	340,000	$	236,266
4.650% 5/06/30		20,000		19,459
Workday, Inc.
3.700% 4/01/29		75,000		70,095
				1,307,204
Telecommunications — 2.6%
AT&T, Inc.
1.650% 2/01/28		460,000		403,754
2.750% 6/01/31		160,000		137,800
3.500% 9/15/53		619,000		446,910
3.550% 9/15/55		225,000		160,878
T-Mobile USA, Inc.
2.250% 2/15/26		205,000		190,688
2.550% 2/15/31		500,000		423,478
3.375% 4/15/29		50,000		45,650
3.400% 10/15/52		230,000		165,292
3.500% 4/15/25		350,000		340,019
3.500% 4/15/31		770,000		692,271
3.875% 4/15/30		430,000		403,240
Telefonica Emisiones SA
5.213% 3/08/47		150,000		131,150
Verizon Communications, Inc.
2.355% 3/15/32		1,290,000		1,057,763
2.650% 11/20/40		25,000		17,840
3.850% 11/01/42		610,000		508,556
3.875% 2/08/29		550,000		530,765
3.875% 3/01/52		525,000		423,381
				6,079,435
Transportation — 0.2%
Union Pacific Corp.
2.150% 2/05/27		50,000		46,167
2.891% 4/06/36		270,000		222,224
3.750% 7/15/25		70,000		68,963
3.750% 2/05/70		150,000		114,406
3.839% 3/20/60		120,000		96,751
				548,511
TOTAL CORPORATE DEBT (Cost $104,909,122)				98,575,095
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 12.5%
Automobile Asset-Backed Securities — 0.2%
Hertz Vehicle Financing LLC, Series 2022-4A, Class A
3.730% 9/25/26 (c)		540,000		518,199
Commercial Mortgage-Backed Securities — 5.6%
Bank
Series 2020-BN28, Class AS, 2.140% 3/15/63		380,000		273,884
Series 2022-BNK39, Class AS, 3.181% 2/15/55		302,000		242,966
Series 2017-BNK8, Class A3, 3.229% 11/15/50		266,500		246,781
Series 2022-BNK40, Class A4, 3.394% VRN 3/15/64 (f)		270,000		235,837
Series 2017-BNK5, Class C, 4.191% VRN 6/15/60 (f)		200,000		169,856

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Benchmark Mortgage Trust
Series 2020-B19, Class AS, 2.148% 9/15/53	$	380,000	$	291,230
Series 2020-B18, Class AGNF, 4.139% 7/15/53 (c)		378,000		326,189
BPR Trust, Series 2021-TY, Class A, 1 mo. USD LIBOR + 1.050%
5.734% FRN 9/15/38 (c)		550,000		525,021
BX Commercial Mortgage Trust
Series 2021-ACNT, Class A, 1 mo. USD LIBOR + .850% 5.535% FRN 11/15/38 (c)		120,000		115,349
Series 2021-VOLT, Class F, 1 mo. USD LIBOR + 2.400% 7.084% FRN 9/15/36 (c)		405,000		372,594
Series 2021-21M, Class H, 1 mo. USD LIBOR + 4.010% 8.694% FRN 10/15/36 (c)		295,025		270,696
BX Trust
Series 2019-OC11, Class E, 3.944% VRN 12/09/41 (c) (f)		374,000		293,449
Series 2023-LIFE, Class A, 5.045% 2/15/28 (c)		260,000		252,673
Series 2021-RISE, Class A, 1 mo. USD LIBOR + .748% 5.432% FRN 11/15/36 (c)		480,000		459,444
Series 2022-IND, Class A, 1 mo. USD Term SOFR + 1.491% 6.318% FRN 4/15/37 (c)		205,389		200,701
Series 2022-PSB, Class A, 1 mo. USD Term SOFR + 2.451% 7.278% FRN 8/15/39 (c)		474,510		469,762
CFCRE Commercial Mortgage Trust, Series 2016-C3, Class XA,
0.983% VRN 1/10/48 (f)		5,231,622		116,511
Citigroup Commercial Mortgage Trust
Series 2016-GC36, Class D, 2.850% 2/10/49 (c)		201,000		116,534
Series 2019-GC41, Class B, 3.199% 8/10/56		163,000		130,400
Series 2020-420K, Class E, 3.312% VRN 11/10/42 (c) (f)		200,000		141,217
Series 2020-420K, Class D, 3.312% VRN 11/10/42 (c) (f)		200,000		146,733
Series 2017-C4, Class B, 4.096% VRN 10/12/50 (f)		340,000		297,226
CSAIL Commercial Mortgage Trust
Series 2015-C1, Class XA, 0.813% VRN 4/15/50 (f)		7,695,481		79,434
Series 2019-C16, Class B, 3.885% 6/15/52		334,000		274,247
Series 2015-C4, Class C, 4.558% VRN 11/15/48 (f)		427,000		382,571
CSMC Trust, Series 2021-B33, Class B,
3.645% VRN 10/10/43 (c) (f)		300,000		241,710
GS Mortgage Securities Trust
Series 2015-GS1, Class XA, 0.757% VRN 11/10/48 (f)		7,605,843		126,241
Series 2014-GC26, Class D, 4.524% VRN 11/10/47 (c) (f)		763,000		461,253
Series 2018-RIVR, Class C, 1 mo. USD LIBOR + 1.250% 5.934% FRN 7/15/35 (c)		167,000		131,367
Hospitality Mortgage Trust, Series 2019-HIT, Class F, 1 mo. USD LIBOR + 3.150%
7.834% FRN 11/15/36 (c)		385,138		351,472
JP Morgan Chase Commercial Mortgage Securities Trust
Series 2015-JP1, Class XA, 0.892% VRN 1/15/49 (f)		3,453,347		67,809
Series 2016-JP2, Class B, 3.460% 8/15/49		174,000		147,856
JPMBB Commercial Mortgage Securities Trust
Series 2015-C30, Class XA, 0.432% VRN 7/15/48 (f)		7,955,175		67,210
Series 2015-C29, Class XA, 0.565% VRN 5/15/48 (f)		5,498,916		54,170
Series 2014-C25, Class XA, 0.807% VRN 11/15/47 (f)		3,624,041		35,854
Series 2015-C28, Class XA, 0.945% VRN 10/15/48 (f)		5,897,290		79,520
Series 2015-C27, Class D, 3.796% VRN 2/15/48 (c) (f)		704,000		506,689
Series 2014-C23, Class D, 3.979% VRN 9/15/47 (c) (f)		391,000		337,484
Series 2015-C28, Class B, 3.986% 10/15/48		340,000		307,630
Series 2013-C17, Class C, 4.884% VRN 1/15/47 (f)		400,000		384,245
Med Trust, Series 2021-MDLN, Class D, 1 mo. USD LIBOR + 2.000%
6.685% FRN 11/15/38 (c)		394,827		375,277
Morgan Stanley Capital I Trust, Series 2015-UBS8, Class XA,
0.852% VRN 12/15/48 (f)		5,673,702		99,083

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
MTN Commercial Mortgage Trust, Series 2022-LPFL, Class A, 1 mo. USD Term SOFR + 1.397%
6.224% FRN 3/15/39 (c)	$	540,000	$	525,313
SG Commercial Mortgage Securities Trust, Series 2016-C5, Class XA,
1.878% VRN 10/10/48 (f)		3,208,103		129,671
SLG Office Trust, Series 2021-OVA, Class E
2.851% 7/15/41 (c)		260,000		185,753
TTAN
Series 2021-MHC, Class A, 1 mo. USD LIBOR + .850% 5.535% FRN 3/15/38 (c)		522,588		505,933
Series 2021-MHC, Class F, 1 mo. USD LIBOR + 2.900% 7.585% FRN 3/15/38 (c)		379,616		355,631
UBS-Barclays Commercial Mortgage Trust, Series 2013-C5, Class C,
3.885% VRN 3/10/46 (c) (f)		393,000		281,906
Wells Fargo Commercial Mortgage Trust
Series 2015-NXS2, Class XA, 0.603% VRN 7/15/58 (f)		9,143,582		101,912
Series 2015-P2, Class XA, 0.925% VRN 12/15/48 (f)		3,516,680		69,562
Series 2019-C53, Class XA, 1.000% VRN 10/15/52 (f)		4,263,618		197,973
Series 2017-C38, Class A4, 3.190% 7/15/50		308,891		281,876
Series 2016-C35, Class B, 3.438% 7/15/48		328,000		283,381
				13,125,086
Other Asset-Backed Securities — 2.0%
Blackbird Capital Aircraft Lease Securitization Ltd., Series 2016-1A, Class B,
5.682% STEP 12/16/41 (c)		693,830		451,010
CLI Funding VI LLC, Series 2020-3A, Class A
2.070% 10/18/45 (c)		179,167		157,741
Dividend Solar Loans LLC, Series 2018-1, Class B
4.290% 7/20/38 (c)		533,905		492,679
Hero Funding Trust, Series 2016-4A, Class A2
4.290% 9/20/47 (c)		99,745		95,455
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (c)		338,115		283,818
Mosaic Solar Loans LLC
Series 2021-3A, Class B, 1.920% 6/20/52 (c)		390,326		312,138
Series 2020-1A, Class A, 2.100% 4/20/46 (c)		246,916		215,040
Series 2020-2A, Class B, 2.210% 8/20/46 (c)		279,104		233,814
Series 2017-1A, Class A, 4.450% 6/20/42 (c)		202,824		194,763
Sunnova Helios IV Issuer LLC, Series 2020-AA, Class A
2.980% 6/20/47 (c)		371,179		328,088
Sunnova Helios VII Issuer LLC, Series 2021-C, Class C
2.630% 10/20/48 (c)		450,439		318,175
Sunnova Sol III Issuer LLC, Series 2021-1, Class A
2.580% 4/28/56 (c)		450,205		351,442
Textainer Marine Containers VII Ltd., Series 2020-2A, Class A
2.100% 9/20/45 (c)		379,613		336,204
Upstart Securitization Trust, Series 2021-3, Class C
3.280% 7/20/31 (c)		500,000		437,140
Vault DI Issuer LLC, Series 2021-1A, Class A2
2.804% 7/15/46 (c)		500,000		429,076
Washington Mutural Asset-Backed Certificates Trust, Series 2006-HE5, Class 2A2, 1 mo. USD LIBOR + .180%
4.433% FRN 10/25/36		55,567		20,229
				4,656,812

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Student Loans Asset-Backed Securities — 0.5%
College Avenue Student Loans LLC, Series 2018-A, Class A1, 1 mo. USD LIBOR + 1.200%
6.045% FRN 12/26/47 (c)	$	210,463	$	205,784
Navient Private Education Loan Trust, Series 2020-A, Class A2A
2.460% 11/15/68 (c)		230,052		215,184
SoFi Professional Loan Program LLC
Series 2017-D, Class BFX, 3.610% 9/25/40 (c)		350,000		303,397
Series 2018-B, Class BFX, 3.830% 8/25/47 (c)		500,000		460,209
				1,184,574
Whole Loan Collateral Collateralized Mortgage Obligations — 3.8%
Citigroup Mortgage Loan Trust, Series 2007-AR5, Class 1A2A,
4.133% VRN 4/25/37 (f)		616,840		542,440
Countrywide Home Loans Mortgage Pass-Through Trust
Series 2007-HYB2, Class 3A1, 3.521% VRN 2/25/47 (f)		769,267		681,569
Series 2007-3, Class A21, 6.000% 4/25/37		1,297,851		695,287
Series 2007-14, Class A6, 6.000% 9/25/37		1,158,049		658,985
CSMC Trust, Series 2021-NQM8, Class A1,
1.841% VRN 10/25/66 (c) (f)		133,998		114,925
HarborView Mortgage Loan Trust, Series 2006-11, Class A1A, 1 mo. USD LIBOR + .340%
5.101% FRN 12/19/36		439,659		384,778
Imperial Fund Mortgage Trust, Series 2021-NQM2, Class M1,
2.489% VRN 9/25/56 (c) (f)		1,028,000		621,531
Morgan Stanley Mortgage Loan Trust, Series 2005-3AR, Class 2A1,
2.999% VRN 7/25/35 (f)		224,460		192,709
New Residential Mortgage Loan Trust, Series 2022-NQM4, Class A1,
5.000% STEP 6/25/62 (c)		471,243		465,398
PRKCM Trust
Series 2021-AFC2, Class A1, 2.071% VRN 11/25/56 (c) (f)		130,504		110,255
Series 2022-AFC1, Class A1, 4.100% VRN 4/25/57 (c) (f)		500,463		481,843
Series 2023-AFC1, Class A1, 6.598% STEP 2/25/58 (c)		470,000		478,534
RBSSP Resecuritization Trust, Series 2009-5, Class 2A3,
6.500% VRN 10/26/37 (c) (f)		642,268		283,225
RFMSI Trust, Series 2007-S4, Class A5, 1 mo. USD LIBOR + .600%
6.000% FRN 4/25/37		154,305		123,044
Structured Adjustable Rate Mortgage Loan Trust, Series 2008-1, Class A2,
3.760% VRN 10/25/37 (f)		515,991		399,366
Verus Securitization Trust
Series 2021-4, Class M1, 2.195% VRN 7/25/66 (c) (f)		1,000,000		570,813
Series 2021-R1, Class M1, 2.338% 10/25/63 (c)		1,500,000		1,179,887
Series 2022 - 6, Class A1, 4.910% STEP 6/25/67 (c)		276,948		273,209
Washington Mutual Mortgage Pass-Through Certificates Trust, Series 2006-4, Class 3A5,
6.850% STEP 5/25/36		659,926		551,282
				8,809,080
Whole Loan Collateral Planned Amortization Classes — 0.4%
Countrywide Alternative Loan Trust, Series 2006-19CB, Class A15
6.000% 8/25/36		1,309,198		788,138
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $38,048,399)				29,081,889

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SOVEREIGN DEBT OBLIGATIONS — 7.2%
Brazil Notas do Tesouro Nacional Serie F
10.000% 1/01/27 BRL (g)	$	2,920,000	$	555,095
Brazil Notas do Tesouro Nacional, Series F
10.000% 1/01/33 BRL (g)		3,249,000		561,795
Brazilian Government International Bond
3.750% 9/12/31		950,000		821,718
5.625% 2/21/47		300,000		252,077
Colombia Government International Bond
3.250% 4/22/32		430,000		319,190
4.125% 2/22/42		440,000		283,577
Indonesia Government International Bond
3.500% 1/11/28		320,000		306,560
6.500% 2/15/31 IDR (g)		59,120,000,000		3,915,180
Israel Government International Bond
2.750% 7/03/30		310,000		280,302
Mexican Bonos
7.750% 11/23/34 MXN (g)		8,220,000		420,570
7.750% 11/13/42 MXN (g)		144,850,000		7,007,862
Mexico Government International Bond
2.659% 5/24/31 (d)		200,000		166,847
3.750% 1/11/28		205,000		196,323
4.280% 8/14/41		450,000		367,402
Nigeria Government International Bond
7.143% 2/23/30 (d)		210,000		159,600
Panama Government International Bond
2.252% 9/29/32 (d)		200,000		153,010
4.300% 4/29/53		200,000		146,382
Peruvian Government International Bond
6.550% 3/14/37		460,000		498,882
Provincia de Buenos Aires/Government Bond,
5.250% STEP 9/01/37 (c)		540,000		189,305
Republic of Kenya Government International Bond
6.300% 1/23/34		370,000		259,925
				16,861,602
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $16,485,704)				16,861,602
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (h) — 33.7%
Collateralized Mortgage Obligations — 4.9%
Federal Home Loan Mortgage Corp. REMICS
Series 5085, Class NI, 2.000% 3/25/51		1,405,645		169,722
Series 5071, Class IH, 2.500% 2/25/51		259,298		34,581
Series 4481, Class B, 3.000% 12/15/42		1,049,723		1,012,288
Series 4483, Class CA, 3.000% 6/15/44		1,717,539		1,636,353
Series 4391, Class MZ, 3.000% 9/15/44		129,005		114,645
Federal National Mortgage Association REMICS
Series 2018-21, Class PO, 0.010% 4/25/48		664,014		499,711
Series 2021-48, Class NS, 30 day SOFR + 3.650% 0.129% FRN 8/25/51		1,045,461		48,274
Series 2020-56, Class AQ, 2.000% 8/25/50		300,000		248,755
Series 2014-6, Class Z, 2.500% 2/25/44		125,725		108,556
Series 2018-18, Class ZG, 3.000% 6/25/50		2,555,649		1,936,245
Series 2020-96, Class IN, 3.000% 1/25/51		403,218		65,239
Series 2015-65, Class CZ, 3.500% 9/25/45		130,347		111,057

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Series 2018-44, Class PZ, 3.500% 6/25/48	$	3,078,467	$	2,876,562
Government National Mortgage Association
Series 2021-103, Class SA, 30 day SOFR + 3.250% 0.330% FRN 4/20/51		1,257,451		36,735
Series 2022-210, Class IO, 0.694% VRN 7/16/64 (f)		1,495,878		103,811
Series 2022-216, Class IO, 0.751% VRN 7/16/65 (f)		1,497,314		101,416
Series 2020-103, Class AD, 1.450% 1/16/63		295,109		235,595
Series 2022-3, Class B, 1.850% 2/16/61		500,000		287,116
Series 2020-175, Class GI, 2.000% 11/20/50		156,021		17,448
Series 2022-113, Class Z, 2.000% 9/16/61		1,218,120		734,718
Series 2022-115, Class MI, 2.500% 5/20/51		511,388		55,735
Series 2021-96, Class VI, 2.500% 6/20/51		450,859		62,329
Series 2021-176, Class IN, 2.500% 10/20/51		544,693		74,853
Series 2022-189, Class PT, 2.500% 10/20/51		98,226		84,280
Series 2021-58, Class BI, 3.000% 3/20/51		673,753		100,505
Series 2021-98, Class IG, 3.000% 6/20/51		992,022		154,259
Series 2021-137, Class IQ, 3.000% 8/20/51		1,372,357		207,834
Series 2022-220, Class E, 3.000% VRN 10/16/64 (f)		100,000		76,085
Series 2021-117, Class ID, 3.500% 6/20/51		748,326		110,219
				11,304,926
Pass-Through Securities — 27.2%
Federal Home Loan Mortgage Corp.
Pool #RA4537 1.500% 2/01/51		87,763		69,011
Pool #RB5138 2.000% 12/01/41		181,267		154,449
Pool #RB5145 2.000% 2/01/42		555,418		473,244
Pool #SD8146 2.000% 5/01/51		342,216		283,351
Pool #RA5731 2.000% 8/01/51		177,613		147,062
Pool #SD0715 2.000% 9/01/51		1,875,832		1,568,408
Pool #QD2129 2.000% 11/01/51		928,849		767,915
Pool #QD3960 2.000% 1/01/52		371,201		308,046
Pool #QK1449 2.500% 4/01/42		184,836		163,181
Pool #G08520 2.500% 1/01/43		501,401		448,346
Pool #SD7521 2.500% 7/01/50 (i)		209,091		182,961
Pool #SD7525 2.500% 10/01/50		659,192		576,607
Pool #RA3913 2.500% 11/01/50		240,859		210,533
Pool #RA4142 2.500% 12/01/50		301,821		263,537
Pool #SD7534 2.500% 2/01/51		155,553		136,405
Pool #SD8129 2.500% 2/01/51		67,405		58,350
Pool #QC7086 2.500% 9/01/51		617,930		533,273
Pool #SD0777 2.500% 11/01/51		90,120		77,941
Pool #SD1749 2.500% 4/01/52		97,854		84,784
Pool #SD7554 2.500% 4/01/52 (i)		1,127,680		978,825
Pool #QK1512 3.000% 5/01/42		185,026		169,285
Pool #QC3242 3.000% 6/01/51		489,813		443,398
Pool #SD8174 3.000% 10/01/51		2,235,876		2,008,499
Pool #SD0781 3.000% 11/01/51 (i)		86,181		77,415
Pool #QD6216 3.000% 2/01/52		94,271		84,874
Pool #G08632 3.500% 3/01/45		645,979		611,726
Pool #SD8214 3.500% 5/01/52		285,496		265,184
Pool #SD1218 4.000% 7/01/49		882,924		856,514
Pool #SD1143 4.500% 9/01/50		1,263,620		1,253,006
Pool #SD1807 4.500% 7/01/52 (i)		98,606		97,308
Pool #QF3213 4.500% 11/01/52 (i)		97,474		95,667
Pool #SD2394 4.500% 11/01/52 (i)		99,859		97,858
Pool #SD1305 5.000% 7/01/52		660,014		661,796
Pool #SD2138 5.500% 1/01/53		99,586		101,023
Pool #SD2284 6.000% 12/01/52		97,892		100,638
Pool #QF6690 6.500% 1/01/53		99,774		103,207

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Federal National Mortgage Association
Pool #MA4280 1.500% 3/01/51	$	311,880	$	244,850
Pool #MA4606 2.000% 5/01/42		282,497		240,702
Pool #CA7023 2.000% 9/01/50		76,706		63,631
Pool #CA7224 2.000% 10/01/50		152,197		126,255
Pool #CA9220 2.000% 2/01/51 (i)		170,383		141,075
Pool #MA4325 2.000% 5/01/51		259,159		214,580
Pool #FM9489 2.000% 11/01/51		91,216		75,412
Pool #BU2591 2.000% 12/01/51 (i)		93,729		77,431
Pool #FS2040 2.000% 2/01/52		95,417		78,855
Pool #FS4270 2.000% 3/01/52		100,000		83,143
Pool #BS4941 2.460% 4/01/32		978,200		832,703
Pool #BV7697 2.500% 4/01/42		379,198		334,772
Pool #FM4052 2.500% 9/01/50		2,481,452		2,170,570
Pool #MA4256 2.500% 2/01/51		1,673,166		1,445,771
Pool #FS1924 2.500% 3/01/51		91,395		78,974
Pool #MA4306 2.500% 4/01/51		157,226		135,784
Pool #CB0458 2.500% 5/01/51		495,995		428,043
Pool #FS1111 2.500% 5/01/51		90,889		78,537
Pool #FS0028 2.500% 9/01/51		90,891		78,893
Pool #FM8786 2.500% 10/01/51		88,765		77,048
Pool #FS0549 2.500% 2/01/52		280,512		242,959
Pool #FS3368 2.500% 3/01/52		97,964		84,788
Pool #FS1626 2.500% 4/01/52		190,336		164,617
Pool #BF0546 2.500% 7/01/61		630,427		533,518
Pool #BF0560 2.500% 9/01/61		92,775		77,731
Pool #FS1542 3.000% 4/01/42		187,648		171,684
Pool #CB3542 3.000% 5/01/42		92,915		85,010
Pool #MA4643 3.000% 5/01/42		94,509		86,469
Pool #MA4632 3.000% 6/01/42		380,589		348,211
Pool #MA2248 3.000% 4/01/45		288,727		262,270
Pool #AS7661 3.000% 8/01/46		299,413		270,759
Pool #FM9934 3.000% 12/01/48		897,166		820,280
Pool #FM9564 3.000% 2/01/50		1,041,836		952,551
Pool #FS2463 3.000% 2/01/52		575,497		518,130
Pool #FS1289 3.000% 3/01/52		458,406		417,653
Pool #FS0957 3.000% 3/01/52 (i)		187,324		168,183
Pool #CB3833 3.000% 6/01/52		95,743		86,139
Pool #CB3386 3.500% 4/01/42		93,883		89,044
Pool #FM7100 3.500% 6/01/50		123,343		116,350
Pool #FS1240 3.500% 12/01/51		89,602		83,687
Pool #FS1237 3.500% 12/01/51		265,705		250,206
Pool #FS1241 3.500% 1/01/52		96,230		89,895
Pool #FS1462 3.500% 1/01/52		182,879		172,153
Pool #FS1092 3.500% 4/01/52		559,151		521,413
Pool #FS1454 3.500% 4/01/52		191,249		178,344
Pool #FS1555 3.500% 4/01/52		189,523		176,927
Pool #BV8546 3.500% 5/01/52		187,559		175,915
Pool #FS1556 3.500% 5/01/52		756,612		710,111
Pool #FS1866 3.500% 5/01/52		97,149		90,541
Pool #CB3899 3.500% 6/01/52 (i)		478,675		444,469
Pool #BS6565 3.740% 9/01/32		100,000		95,851
Pool #BS6215 3.840% 7/01/32		100,000		96,454
Pool #BS6149 3.840% 8/01/32		100,000		96,388
Pool #BS6949 3.980% 10/01/32		100,000		95,951
Pool #AX2501 4.000% 10/01/44		616,614		602,602
Pool #CB3614 4.000% 5/01/52		93,304		89,777
Pool #FS2023 4.000% 5/01/52		194,237		186,895

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #BX2186 4.500% 11/01/52 (i)	$	99,203	$	97,240
Pool #FS3977 4.500% 11/01/52 (i)		99,863		97,893
Pool #FS3672 5.500% 2/01/53		99,577		101,014
Pool #FS4166 5.500% 4/01/53 (i)		100,000		101,257
Pool #CB5497 6.500% 1/01/53		294,292		306,903
Pool #BX7702 6.500% 2/01/53		99,109		102,594
Government National Mortgage Association
Pool #MA7193 2.500% 2/20/51		401,576		355,176
Government National Mortgage Association II
Pool #MA7135 2.000% 1/20/51		75,039		63,951
Pool #MA7192 2.000% 2/20/51		685,914		583,912
Pool #MA7471 2.000% 7/20/51		169,852		144,580
Pool #MA7648 2.000% 10/20/51		89,621		76,258
Pool #BS8546 2.500% 12/20/50		74,157		64,557
Pool #MA7136 2.500% 1/20/51		64,999		57,529
Pool #MA7312 2.500% 4/20/51		150,366		132,898
Pool #MA7589 2.500% 9/20/51 (i)		435,418		383,747
Pool #785662 2.500% 10/20/51		2,333,906		2,038,345
Pool #785764 2.500% 11/20/51		675,523		591,032
Pool #MA8264 2.500% 9/20/52		96,550		84,987
Pool #MA7368 3.000% 5/20/51		209,338		191,238
Pool #MA7590 3.000% 9/20/51		1,482,645		1,353,409
Pool #MA7650 3.000% 10/20/51		427,296		390,050
Pool #MA7706 3.000% 11/20/51		176,230		160,814
Pool #MA7828 3.000% 1/20/52		91,012		83,008
Pool #MA8486 3.000% 12/20/52		494,294		449,857
Pool #MA6711 3.500% 6/20/50		302,344		286,505
Pool #MA6997 3.500% 11/20/50		365,413		346,156
Pool #MA7883 3.500% 2/20/52		656,821		616,819
Pool #MA7989 3.500% 4/20/52		479,962		450,281
Pool #786216 3.500% 6/20/52		190,639		177,629
Pool #MA8487 3.500% 12/20/52 (i)		197,830		185,318
Pool #MA5194 5.000% 5/20/48		20,485		20,851
Pool #MA5597 5.000% 11/20/48		41,790		42,393
Pool #MA5653 5.000% 12/20/48		50,147		50,823
Pool #MA5712 5.000% 1/20/49		39,541		40,074
Pool #MA5878 5.000% 4/20/49		20,304		20,588
Pool #MA8348 5.000% 10/20/52		98,827		98,954
Pool #786474 5.000% 1/20/53		99,338		100,987
Pool #786544 5.000% 2/20/53		99,862		100,740
Pool #MA8429 5.500% 11/20/52 (i)		297,603		300,993
Government National Mortgage Association II TBA
2.000% 4/20/53 (i)		800,000		679,062
2.500% 4/20/53 (i)		300,000		264,023
3.000% 4/20/53 (i)		800,000		727,500
3.500% 4/20/53 (i)		500,000		468,633
4.000% 4/20/53 (i)		1,900,000		1,828,156
4.500% 4/20/53 (i)		1,900,000		1,870,906
5.000% 4/20/53 (i)		1,200,000		1,200,937
5.500% 4/20/53 (i)		1,200,000		1,213,594
6.000% 4/20/53 (i)		100,000		101,883
Uniform Mortgage Backed Securities TBA
2.000% 4/13/53 (i)		3,800,000		3,138,859
2.500% 4/13/53 (i)		2,600,000		2,240,672
3.000% 4/13/53 (i)		1,100,000		986,047
3.500% 4/13/53 (i)		1,200,000		1,114,125
4.000% 4/13/53 (i)		2,600,000		2,485,031
4.500% 4/13/53 (i)		800,000		783,375

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
5.000% 4/13/53 (i)	$	1,200,000	$	1,196,250
5.500% 4/13/53 (i)		600,000		606,000
6.000% 4/13/53 (i)		300,000		306,187
6.500% 4/13/53 (i)		200,000		206,406
				63,443,587
Whole Loans — 1.6%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes, Series 2022-DNA2, Class M1B, 30 day SOFR + 2.400%
6.960% FRN 2/25/42 (c)		1,864,000		1,810,865
Federal National Mortgage Association Connecticut Avenue Securities Trust, Series 2022-R04, Class 1M2, 30 day SOFR + 3.100%
7.660% FRN 3/25/42 (c)		2,000,000		1,980,000
				3,790,865
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $82,706,820)				78,539,378
U.S. TREASURY OBLIGATIONS — 1.3%
U.S. Treasury Bonds & Notes — 1.3%
U.S. Treasury Bond
2.000% 8/15/51		410,000		286,957
U.S. Treasury Inflation Index
1.125% 1/15/33		2,711,043		2,702,465
U.S. Treasury Note
4.000% 2/29/28 (d)		20,000		20,342
				3,009,764
TOTAL U.S. TREASURY OBLIGATIONS (Cost $3,002,365)				3,009,764
TOTAL BONDS & NOTES (Cost $253,829,619)				234,347,119
	Number of Shares
MUTUAL FUNDS — 0.9%
Diversified Financial Services — 0.9%
State Street Navigator Securities Lending Government Money Market Portfolio (j)		2,107,468		2,107,468
TOTAL MUTUAL FUNDS (Cost $2,107,468)				2,107,468
TOTAL PURCHASED OPTIONS(#) — 0.1% (Cost $408,038)				225,235
TOTAL LONG-TERM INVESTMENTS (Cost $256,345,125)				236,679,822

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 10.6%
Repurchase Agreement — 6.1%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (k)	$	14,174,100	$	14,174,100
U.S. Treasury Bill — 4.5%
U.S. Treasury Bill
4.674% 5/23/23 (l)		5,570,000		5,534,397
4.722% 4/11/23 (l)		840,000		839,150
4.788% 7/18/23 (l)		4,150,000		4,092,889
				10,466,436
TOTAL SHORT-TERM INVESTMENTS (Cost $24,640,666)				24,640,536
TOTAL INVESTMENTS — 112.2% (Cost $280,985,791) (m)				261,320,358
Other Assets/(Liabilities) — (12.2)%				(28,381,205)
NET ASSETS — 100.0%			$	232,939,153

Abbreviation Legend

FRN Floating Rate Note

IO Interest Only

REMICS Real Estate Mortgage Investment Conduits

STEP Step Up Bond

TBA To Be Announced

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) All or a portion of the security represents unsettled bank loan commitments at March 31, 2023 where the rate will be determined at time of settlement.

(b) Unfunded or partially unfunded bank loan commitments.

(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 March 31, 2023, the aggregate market value of these securities amounted to $40,742,071 or 17.49% of net assets.

(d) Denotes all or a portion of security on loan. The total value of securities on loan as of March 31, 2023, was $2,726,523 or 1.17% of net assets. The Fund received $679,389 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

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

(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 March 31, 2023.

(g) The principal amount of the security is in foreign currency. The market value is in U.S. dollars.

(h) 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.

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

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

(k) Maturity value of $14,175,801. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $14,457,601.

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

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

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

(#) Exchange-Traded Options Purchased
Description	Expiration Date	Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid (Received)		Unrealized Appreciation/ (Depreciation)
Call
U.S. Treasury Note 5 Year Future	4/21/23		109.75		91	USD	9,965,211	$	56,164	$	50,634	$	5,530
U.S. Treasury Note 5 Year Future	4/21/23		111.25		61	USD	6,679,977		14,773		34,722		(19,949)
3 Month SOFR Future	6/16/23		95.50		21	USD	4,994,063		7,219		6,869		350
								$	78,156	$	92,225	$	(14,069)
Put
U.S. Treasury Note 10 Year Future	4/21/23		113.00		60	USD	6,895,313	$	15,000	$	49,104	$	(34,104)
U.S. Treasury Note 5 Year Future	4/21/23		108.25		91	USD	9,965,211		18,484		35,884		(17,400)
SOFR 1 Year Mid Curve Future	6/16/23		95.50		305	USD	73,531,688		47,656		107,391		(59,735)
SOFR 1 Year Mid Curve Future	12/15/23		95.88		40	USD	9,687,500		17,250		35,996		(18,746)
SOFR 1 Year Mid Curve Future	12/15/23		96.00		95	USD	23,007,813		48,689		87,438		(38,749)
								$	147,079	$	315,813	$	(168,734)
								$	225,235	$	408,038	$	(182,803)

Exchange-Traded Options Written
Description	Expiration Date	Exercise Price		No. of Contracts		Notional Amount		Value		Premiums Paid (Received)		Unrealized Appreciation/ (Depreciation)
Call
U.S. Treasury Note 10 Year Future	5/26/23		117.00		31	USD	3,562,578	$	(23,250)	$	(28,290)	$	5,040
U.S. Treasury Note 5 Year Future	5/26/23		110.00		61	USD	6,679,977		(54,328)		(50,066)		(4,262)
3 Month SOFR Future	6/16/23		96.00		21	USD	4,994,063		(4,463)		(2,581)		(1,882)
3 Month SOFR Future	6/14/24		97.50		92	USD	22,180,050		(81,075)		(82,782)		1,707
								$	(163,116)	$	(163,719)	$	603
Put
U.S. Treasury Note 10 Year Future	5/26/23		110.00		120	USD	13,790,625	$	(18,750)	$	(52,542)	$	33,792
U.S. Treasury Note 5 Year Future	5/26/23		108.00		61	USD	6,679,977		(25,734)		(39,175)		13,441
SOFR 1 Year Mid Curve Future	12/15/23		95.25		80	USD	19,375,000		(14,500)		(31,832)		17,332
SOFR 1 Year Mid Curve Future	12/15/23		95.38		190	USD	46,015,625		(40,375)		(79,301)		38,926
3 Month SOFR Future	6/14/24		94.50		305	USD	73,531,688		(83,875)		(106,210)		22,335
								$	(183,234)	$	(309,060)	$	125,826
								$	(346,350)	$	(472,779)	$	126,429

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

Forward contracts
Counterparty	Settlement Date	Currency Purchased		Currency Sold		Unrealized Appreciation/ (Depreciation)
BNP Paribas SA	4/18/23	EUR	1,375,060	USD	1,477,558	$	14,852
BNP Paribas SA	4/18/23	USD	1,532,208	EUR	1,428,232		(17,912)
Goldman Sachs International	4/18/23	ZAR	6,598,022	USD	385,207		(15,092)
Goldman Sachs International	4/18/23	JPY	838,091,285	USD	6,286,643		38,159
Goldman Sachs International	4/18/23	MXN	9,366,652	USD	499,412		18,951
Goldman Sachs International	4/18/23	USD	1,267,545	JPY	168,144,057		(1,384)
JP Morgan Chase Bank N.A.	4/18/23	CAD	7,776,132	USD	5,822,419		(67,500)
JP Morgan Chase Bank N.A.	4/18/23	USD	1,385,915	IDR	21,656,660,000		(57,815)
JP Morgan Chase Bank N.A.	4/18/23	USD	1,331,758	CNH	9,115,681		3,996
JP Morgan Chase Bank N.A.	4/18/23	USD	1,433,199	CAD	1,926,153		7,701
Morgan Stanley & Co. LLC	4/18/23	NOK	12,348,502	EUR	1,162,584		(81,592)
Morgan Stanley & Co. LLC	4/18/23	MXN	1,968,377	USD	104,659		4,274
Morgan Stanley & Co. LLC	4/18/23	CAD	449,490	USD	337,342		(4,686)
Morgan Stanley & Co. LLC	4/18/23	JPY	86,410,658	USD	658,051		(5,938)
Morgan Stanley & Co. LLC	4/18/23	AUD	9,899,503	USD	6,904,007		(283,363)
Morgan Stanley & Co. LLC	4/18/23	EUR	2,228,900	USD	2,399,420		19,699
Morgan Stanley & Co. LLC	4/18/23	USD	296,335	GBP	242,609		(3,034)
Morgan Stanley & Co. LLC	4/18/23	USD	583,914	AUD	848,338		16,558
						$	(414,126)

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Long
Euro-OAT	6/08/23		15	$	2,045,820	$	72,696
Australia Treasury Bond 10 Year	6/15/23		36		2,862,070		95,094
U.S. Treasury Long Bond	6/21/23		62		8,111,092		20,596
U.S. Treasury Ultra Bond	6/21/23		202		27,753,845		753,405
UK Long Gilt	6/28/23		14		1,734,859		50,036
U.S. Treasury Note 5 Year	6/30/23		633		68,092,756		1,225,690
3 Month SOFR	9/19/23		1		241,415		(3,602)
3 Month SOFR	3/17/26		23		5,542,170		39,068
						$	2,252,983
Short
Euro-BUXL 30 Year Bond	6/08/23		2	$	(288,648)	$	(16,877)
Japanese 10 Year Bond	6/13/23		4		(4,380,921)		(81,365)
U.S. Treasury Note 10 Year	6/21/23		250		(28,532,357)		(198,112)
U.S. Treasury Ultra 10 Year	6/21/23		72		(8,426,892)		(295,233)
U.S. Treasury Note 2 Year	6/30/23		140		(28,590,231)		(313,207)
3 Month SOFR	3/19/24		91		(21,789,537)		17,787
3 Month SOFR	3/18/25		92		(22,121,619)		(159,631)
3 Month SOFR	6/17/25		58		(14,080,915)		20,990
						$	(1,025,648)

MML Dynamic Bond Fund —  Portfolio of Investments (Continued)

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation/ (Depreciation)

CDX.NA.HY Series 40†

5.000%

Quarterly

6/20/28

USD

2,282,200

$

(34,009)

$

6,894

$

(40,903)

Centrally Cleared Credit Default Swaps - Sell Protection††

Reference Obligation/ Index

Rate Received by Fund

Payment Frequency

Termination Date

Credit Rating

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation/ (Depreciation)

CDX.NA.IG Series 40†

1.000%

Quarterly

6/20/28

BBB

USD

35,361,000

$

398,907

$

282,844

$

116,063

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)
Fixed 1.220%	Annually		12 Month SOFR		Annually		8/15/28	USD	22,000,000	$	2,284,173	$	1,925,763	$	358,410
Fixed 2.850%	Annually		12 Month SOFR		Annually		2/15/29	USD	948,000		23,489		(12,109)		35,598
Fixed 3.250%	Annually		12 Month SOFR		Annually		9/30/29	USD	2,385,000		4,363		1,051		3,312
12-Month SOFR	Annually		Fixed 3.250%		Annually		12/31/29	USD	6,454,000		19,253		(29,247)		48,500
12-Month SOFR	Annually		Fixed 3.400%		Annually		12/31/29	USD	3,309,000		38,447		8,077		30,370
Fixed 2.000%	Annually		12 Month SOFR		Annually		3/18/32	USD	1,600,000		150,884		100,525		50,359
Fixed 1.650%	Annually		12 Month SOFR		Annually		8/15/47	USD	11,450,000		2,770,018		1,932,942		837,076
Fixed 3.050%	Annually		12 Month SOFR		Annually		2/15/48	USD	1,112,000		3,718		34,279		(30,561)
										$	5,294,345	$	3,961,281	$	1,333,064

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

†† For each credit derivative with sold protection, the credit ratings of the entities referenced, as rated by any rating organization, are included in the equivalent S&P Global Ratings or Western Asset Management Company's rating category, as applicable. The reference entity rating represents the likelihood of a potential payment by the Fund if the referenced entity experiences a credit event as of period end. Notional amounts represent the maximum potential amount of future payments (undiscounted) the Fund could be required to make under the credit derivatives with sold protection.

Currency Legend

AUD Australian Dollar

BRL Brazilian Real

CAD Canadian Dollar

CNH Offshore Chinese Yuan

EUR Euro

GBP British Pound

IDR Indonesian Rupiah

JPY Japanese Yen

MXN Mexican Peso

NOK Norwegian Krone

RON New Romanian Leu

USD U.S. Dollar

ZAR South African Rand

MML Equity Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 98.1%
COMMON STOCK — 98.1%
Basic Materials — 2.8%
Chemicals — 1.6%
Albemarle Corp.		3,400	$	751,536
CF Industries Holdings, Inc.		11,000		797,390
Dow, Inc.		39,200		2,148,944
Eastman Chemical Co.		9,800		826,532
FMC Corp.		6,600		806,058
Huntsman Corp.		6,098		166,841
LyondellBasell Industries NV Class A		18,708		1,756,494
The Mosaic Co.		9,700		445,036
Nutrien Ltd.		37,375		2,760,144
Olin Corp.		7,902		438,561
The Sherwin-Williams Co.		6,916		1,554,510
				12,452,046
Iron & Steel — 0.8%
Nucor Corp.		21,100		3,259,317
Reliance Steel & Aluminum Co.		4,400		1,129,656
Steel Dynamics, Inc.		14,800		1,673,288
United States Steel Corp.		13,400		349,740
				6,412,001
Mining — 0.4%
Freeport-McMoRan, Inc.		79,553		3,254,513
				22,118,560
Communications — 6.1%
Advertising — 0.3%
The Interpublic Group of Cos., Inc.		22,400		834,176
Omnicom Group, Inc.		15,000		1,415,100
				2,249,276
Internet — 1.1%
Alphabet, Inc. Class C (a)		64,222		6,679,088
Booking Holdings, Inc. (a)		697		1,848,730
				8,527,818
Media — 1.6%
Comcast Corp. Class A		250,800		9,507,828
Fox Corp. Class A		23,700		806,985
Nexstar Media Group, Inc. Class A		2,300		397,118

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
The Walt Disney Co. (a)		17,600	$	1,762,288
				12,474,219
Telecommunications — 3.1%
AT&T, Inc.		409,300		7,879,025
Cisco Systems, Inc.		236,300		12,352,582
Corning, Inc.		48,600		1,714,608
Frontier Communications Parent, Inc. (a)		14,000		318,780
T-Mobile US, Inc. (a)		5,300		767,652
Verizon Communications, Inc.		44,300		1,722,827
				24,755,474
				48,006,787
Consumer, Cyclical — 7.0%
Apparel — 0.2%
Capri Holdings Ltd. (a)		7,800		366,600
Levi Strauss & Co. Class A		5,600		102,088
Ralph Lauren Corp.		2,450		285,841
Skechers U.S.A., Inc. Class A (a)		7,600		361,152
Tapestry, Inc.		13,400		577,674
				1,693,355
Auto Manufacturers — 1.5%
Cummins, Inc.		8,600		2,054,368
Ford Motor Co.		273,400		3,444,840
General Motors Co.		111,400		4,086,152
PACCAR, Inc.		29,913		2,189,632
				11,774,992
Auto Parts & Equipment — 0.1%
BorgWarner, Inc.		13,400		658,074
Lear Corp.		3,300		460,317
				1,118,391
Distribution & Wholesale — 0.2%
LKQ Corp.		21,300		1,208,988
Home Builders — 0.9%
D.R. Horton, Inc.		25,700		2,510,633
Lennar Corp. Class A		19,300		2,028,623
NVR, Inc. (a)		200		1,114,438
PulteGroup, Inc.		18,900		1,101,492
Toll Brothers, Inc.		3,200		192,096
				6,947,282
Home Furnishing — 0.1%
Whirlpool Corp.		4,300		567,686
Leisure Time — 0.1%
Brunswick Corp.		5,400		442,800
Harley-Davidson, Inc.		8,300		315,151

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Polaris, Inc.		3,200	$	354,016
				1,111,967
Lodging — 0.0%
Boyd Gaming Corp.		5,998		384,592
Retail — 3.9%
AutoNation, Inc. (a)		6,200		833,032
Bath & Body Works, Inc.		12,700		464,566
Best Buy Co., Inc.		23,200		1,815,864
Dollar General Corp.		10,519		2,213,829
The Home Depot, Inc.		8,000		2,360,960
Lowe's Cos., Inc.		51,400		10,278,458
Macy's, Inc.		14,000		244,860
McDonald's Corp.		12,400		3,467,164
Penske Automotive Group, Inc.		4,400		623,964
Ross Stores, Inc.		7,823		830,255
The TJX Cos., Inc.		17,395		1,363,072
Ulta Beauty, Inc. (a)		3,400		1,855,278
Walgreens Boots Alliance, Inc.		47,300		1,635,634
Walmart, Inc.		12,847		1,894,290
Williams-Sonoma, Inc.		3,800		462,308
				30,343,534
				55,150,787
Consumer, Non-cyclical — 27.3%
Agriculture — 2.9%
Altria Group, Inc.		101,200		4,515,544
Archer-Daniels-Midland Co.		39,100		3,114,706
Darling Ingredients, Inc. (a)		9,200		537,280
Philip Morris International, Inc.		152,084		14,790,169
				22,957,699
Beverages — 0.7%
The Coca-Cola Co.		18,700		1,159,961
Constellation Brands, Inc. Class A		4,000		903,560
Keurig Dr Pepper, Inc.		20,769		732,731
Molson Coors Beverage Co. Class B		11,546		596,697
PepsiCo, Inc.		12,400		2,260,520
				5,653,469
Biotechnology — 2.9%
Amgen, Inc.		40,600		9,815,050
Bio-Rad Laboratories, Inc. Class A (a)		1,500		718,530
Biogen, Inc. (a)		5,900		1,640,377
Gilead Sciences, Inc.		72,200		5,990,434
Moderna, Inc. (a)		22,200		3,409,476
Regeneron Pharmaceuticals, Inc. (a)		890		731,286
				22,305,153
Commercial Services — 0.8%
Avis Budget Group, Inc. (a)		1,200		233,760
FleetCor Technologies, Inc. (a)		4,100		864,485
Global Payments, Inc.		7,600		799,824

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Robert Half International, Inc.		3,100	$	249,767
Service Corp. International		24,600		1,691,988
U-Haul Holding Co. (b)		1,700		101,405
U-Haul Holding Co.		14,400		746,640
United Rentals, Inc.		3,900		1,543,464
				6,231,333
Cosmetics & Personal Care — 0.5%
The Procter & Gamble Co.		27,848		4,140,719
Food — 2.0%
Conagra Brands, Inc.		27,455		1,031,210
General Mills, Inc.		6,200		529,852
Ingredion, Inc.		3,700		376,401
Kellogg Co.		17,600		1,178,496
The Kraft Heinz Co.		141,937		5,488,704
The Kroger Co.		40,800		2,014,296
Mondelez International, Inc. Class A		71,830		5,007,987
				15,626,946
Health Care – Products — 1.2%
Danaher Corp.		9,565		2,410,763
GE HealthCare Technologies, Inc. (a)		31,591		2,591,410
Hologic, Inc. (a)		13,100		1,057,170
Thermo Fisher Scientific, Inc.		5,409		3,117,585
				9,176,928
Health Care – Services — 4.4%
DaVita, Inc. (a)		2,700		218,997
Elevance Health, Inc.		37,238		17,122,405
HCA Healthcare, Inc.		35,660		9,402,829
Humana, Inc.		4,350		2,111,751
Laboratory Corp. of America Holdings		6,900		1,582,998
Molina Healthcare, Inc. (a)		1,700		454,733
Quest Diagnostics, Inc.		9,500		1,344,060
UnitedHealth Group, Inc.		3,213		1,518,431
Universal Health Services, Inc. Class B		5,400		686,340
				34,442,544
Household Products & Wares — 0.1%
Kimberly-Clark Corp.		7,900		1,060,338
Pharmaceuticals — 11.8%
AbbVie, Inc.		114,537		18,253,762
AmerisourceBergen Corp.		43,500		6,964,785
AstraZeneca PLC Sponsored ADR		40,219		2,791,601
Becton Dickinson & Co.		15,343		3,798,006
Bristol-Myers Squibb Co.		122,300		8,476,613
Cardinal Health, Inc.		15,108		1,140,654
The Cigna Corp.		18,900		4,829,517
CVS Health Corp.		73,085		5,430,946
Henry Schein, Inc. (a)		7,600		619,704
Johnson & Johnson		43,692		6,772,260
McKesson Corp.		11,300		4,023,365
Merck & Co., Inc.		154,800		16,469,172

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Pfizer, Inc.		322,900	$	13,174,320
				92,744,705
				214,339,834
Energy — 9.7%
Oil & Gas — 8.9%
APA Corp.		18,800		677,928
Chesapeake Energy Corp. (b)		3,000		228,120
Chevron Corp.		84,642		13,810,189
ConocoPhillips		71,700		7,113,357
Devon Energy Corp.		37,700		1,907,997
EOG Resources, Inc.		41,100		4,711,293
Exxon Mobil Corp.		286,509		31,418,577
Marathon Oil Corp.		40,315		965,947
Marathon Petroleum Corp.		7,700		1,038,191
Occidental Petroleum Corp.		52,300		3,265,089
PDC Energy, Inc.		5,300		340,154
Range Resources Corp.		23,900		632,633
Southwestern Energy Co. (a)		56,200		281,000
Valero Energy Corp.		22,500		3,141,000
				69,531,475
Oil & Gas Services — 0.0%
Nov, Inc.		6,500		120,315
Pipelines — 0.8%
Kinder Morgan, Inc.		276,200		4,836,262
ONEOK, Inc.		23,100		1,467,774
				6,304,036
				75,955,826
Financial — 22.1%
Banks — 11.2%
Bank of America Corp.		675,125		19,308,575
The Bank of New York Mellon Corp.		48,700		2,212,928
BOK Financial Corp.		3,800		320,758
Citigroup, Inc.		56,200		2,635,218
Commerce Bancshares, Inc.		7,076		412,885
East West Bancorp, Inc.		10,043		557,387
Fifth Third Bancorp		39,500		1,052,280
The Goldman Sachs Group, Inc.		19,700		6,444,067
Huntington Bancshares, Inc.		83,100		930,720
JP Morgan Chase & Co.		222,711		29,021,470
Morgan Stanley		97,300		8,542,940
Northern Trust Corp.		11,400		1,004,682
The PNC Financial Services Group, Inc.		45,000		5,719,500
Prosperity Bancshares, Inc.		5,300		326,056
Regions Financial Corp.		53,700		996,672
State Street Corp.		20,100		1,521,369
US Bancorp		77,400		2,790,270
Wells Fargo & Co.		112,329		4,198,858
				87,996,635

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Diversified Financial Services — 2.1%
American Express Co.		60,197	$	9,929,495
Ameriprise Financial, Inc.		6,300		1,930,950
Capital One Financial Corp.		6,300		605,808
The Charles Schwab Corp.		900		47,142
Discover Financial Services		16,100		1,591,324
SEI Investments Co.		7,900		454,645
Synchrony Financial		25,200		732,816
T. Rowe Price Group, Inc.		12,500		1,411,250
				16,703,430
Insurance — 7.8%
Aflac, Inc.		38,400		2,477,568
The Allstate Corp.		32,487		3,599,885
American Financial Group, Inc.		4,700		571,050
American International Group, Inc.		21,300		1,072,668
Arch Capital Group Ltd. (a)		22,000		1,493,140
Berkshire Hathaway, Inc. Class B (a)		26,000		8,028,020
Chubb Ltd.		41,287		8,017,110
Cincinnati Financial Corp.		8,800		986,304
Corebridge Financial, Inc.		35,819		573,820
Equitable Holdings, Inc.		24,200		614,438
Everest Re Group Ltd.		2,600		930,852
Fidelity National Financial, Inc.		15,700		548,401
First American Financial Corp.		6,000		333,960
Globe Life, Inc.		5,100		561,102
The Hartford Financial Services Group, Inc.		45,976		3,204,067
Loews Corp.		14,700		852,894
Markel Corp. (a)		890		1,136,895
MetLife, Inc.		112,619		6,525,145
Old Republic International Corp.		17,600		439,472
Principal Financial Group, Inc.		15,000		1,114,800
The Progressive Corp.		31,400		4,492,084
Prudential Financial, Inc.		21,600		1,787,184
Reinsurance Group of America, Inc.		3,697		490,814
RenaissanceRe Holdings Ltd.		2,600		520,884
The Travelers Cos., Inc.		52,218		8,950,687
Unum Group		11,500		454,940
Voya Financial, Inc. (b)		7,300		521,658
W.R. Berkley Corp.		15,300		952,578
				61,252,420
Real Estate — 0.2%
CBRE Group, Inc. Class A (a)		18,146		1,321,210
Jones Lang LaSalle, Inc. (a)		3,500		509,215
				1,830,425
Real Estate Investment Trusts (REITS) — 0.8%
Equity LifeStyle Properties, Inc.		9,817		659,015
Life Storage, Inc.		6,500		852,085
Prologis, Inc.		20,950		2,613,932
Public Storage		1,500		453,210

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Weyerhaeuser Co.		42,877	$	1,291,884
				5,870,126
				173,653,036
Industrial — 9.6%
Aerospace & Defense — 0.6%
L3 Harris Technologies, Inc.		19,474		3,821,578
Northrop Grumman Corp.		2,400		1,108,128
				4,929,706
Building Materials — 0.8%
Builders FirstSource, Inc. (a)		8,400		745,752
Carrier Global Corp.		71,407		3,266,870
Fortune Brands Innovations, Inc.		7,400		434,602
Masco Corp.		18,500		919,820
Owens Corning		7,600		728,080
				6,095,124
Electrical Components & Equipment — 0.3%
AMETEK, Inc.		14,445		2,099,292
Electronics — 0.9%
Arrow Electronics, Inc. (a)		5,300		661,811
Honeywell International, Inc.		12,448		2,379,062
Hubbell, Inc.		4,726		1,149,883
Jabil, Inc.		10,600		934,496
Sensata Technologies Holding PLC		8,700		435,174
TD SYNNEX Corp.		5,500		532,345
TE Connectivity Ltd.		9,400		1,232,810
				7,325,581
Engineering & Construction — 0.0%
TopBuild Corp. (a)		900		187,326
Environmental Controls — 0.1%
Pentair PLC		9,400		519,538
Hand & Machine Tools — 0.1%
Regal Rexnord Corp.		1,100		154,803
Snap-on, Inc.		3,700		913,493
				1,068,296
Machinery – Construction & Mining — 0.5%
Caterpillar, Inc.		14,900		3,409,716
Oshkosh Corp.		3,300		274,494
				3,684,210
Machinery – Diversified — 0.7%
AGCO Corp.		4,250		574,600
Deere & Co.		8,500		3,509,480
Dover Corp.		10,800		1,640,952
				5,725,032

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Miscellaneous - Manufacturing — 1.9%
Carlisle Cos., Inc.		2,900	$	655,603
Eaton Corp. PLC		24,771		4,244,263
General Electric Co.		48,787		4,664,037
Parker-Hannifin Corp.		7,500		2,520,825
Siemens AG Registered		9,680		1,566,890
Textron, Inc.		16,000		1,130,080
				14,781,698
Packaging & Containers — 0.5%
Amcor PLC		110,200		1,254,076
Berry Global Group, Inc.		7,100		418,190
Crown Holdings, Inc.		9,500		785,745
Graphic Packaging Holding Co.		17,600		448,624
Packaging Corp. of America		6,600		916,278
Sonoco Products Co.		5,400		329,400
				4,152,313
Shipbuilding — 0.1%
Huntington Ingalls Industries, Inc.		2,400		496,848
Transportation — 3.1%
C.H. Robinson Worldwide, Inc.		6,800		675,716
CSX Corp.		195,657		5,857,970
Expeditors International of Washington, Inc.		9,100		1,002,092
FedEx Corp.		14,500		3,313,105
Knight-Swift Transportation Holdings, Inc.		9,100		514,878
Landstar System, Inc.		2,100		376,446
Norfolk Southern Corp.		7,784		1,650,208
Union Pacific Corp.		14,800		2,978,648
United Parcel Service, Inc. Class B		42,000		8,147,580
				24,516,643
				75,581,607
Technology — 9.0%
Computers — 1.8%
Accenture PLC Class A		3,700		1,057,497
CACI International, Inc. Class A (a)		1,200		355,536
Cognizant Technology Solutions Corp. Class A		8,300		505,719
Dell Technologies, Inc. Class C		13,400		538,814
DXC Technology Co. (a)		13,200		337,392
Hewlett Packard Enterprise Co.		90,900		1,448,037
HP, Inc.		90,700		2,662,045
International Business Machines Corp.		46,500		6,095,685
Leidos Holdings, Inc.		7,849		722,579
NetApp, Inc.		11,200		715,120
				14,438,424
Semiconductors — 5.5%
Applied Materials, Inc.		63,100		7,750,573
Broadcom, Inc.		6,800		4,362,472
KLA Corp.		10,676		4,261,539
Lam Research Corp.		13,600		7,209,632
Micron Technology, Inc.		98,300		5,931,422

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
NXP Semiconductor NV		6,800	$	1,268,030
QUALCOMM, Inc.		64,500		8,228,910
Skyworks Solutions, Inc.		9,200		1,085,416
Texas Instruments, Inc.		15,890		2,955,699
				43,053,693
Software — 1.7%
Activision Blizzard, Inc.		15,600		1,335,204
Concentrix Corp.		2,900		352,495
Fidelity National Information Services, Inc.		20,700		1,124,631
Fiserv, Inc. (a)		73,167		8,270,066
Microsoft Corp.		6,555		1,889,806
				12,972,202
				70,464,319
Utilities — 4.5%
Electric — 4.4%
Alliant Energy Corp.		13,800		736,920
Ameren Corp.		11,594		1,001,606
American Electric Power Co., Inc.		16,136		1,468,215
CenterPoint Energy, Inc.		18,200		536,172
DTE Energy Co.		6,800		744,872
Duke Energy Corp.		42,900		4,138,563
Edison International		19,600		1,383,564
Entergy Corp.		5,000		538,700
Evergy, Inc.		28,500		1,741,920
Eversource Energy		17,800		1,393,028
Exelon Corp.		68,600		2,873,654
FirstEnergy Corp.		16,964		679,578
NextEra Energy, Inc.		5,600		431,648
OGE Energy Corp.		11,561		435,387
Pinnacle West Capital Corp.		6,598		522,825
PPL Corp.		42,400		1,178,296
Public Service Enterprise Group, Inc.		37,100		2,316,895
Sempra Energy		29,682		4,486,731
The Southern Co.		105,824		7,363,234
Vistra Corp.		25,100		602,400
				34,574,208
Gas — 0.1%
National Fuel Gas Co.		4,100		236,734
UGI Corp.		12,100		420,596
				657,330
				35,231,538
TOTAL COMMON STOCK (Cost $657,360,126)				770,502,294
TOTAL EQUITIES (Cost $657,360,126)				770,502,294

MML Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
MUTUAL FUNDS — 1.3%
Diversified Financial Services — 1.3%
iShares Russell 1000 Value ETF		66,800	$	10,170,968
				10,170,968
TOTAL MUTUAL FUNDS (Cost $9,843,675)				10,170,968
TOTAL LONG-TERM INVESTMENTS (Cost $667,203,801)				780,673,262
SHORT-TERM INVESTMENTS — 0.6%
Mutual Fund — 0.0%
T. Rowe Price Government Reserve Investment Fund		2,798		2,498
		Principal Amount
Repurchase Agreement — 0.6%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (c)	$	4,752,386		4,752,386
TOTAL SHORT-TERM INVESTMENTS (Cost $4,754,884)				4,754,884
TOTAL INVESTMENTS — 100.0% (Cost $671,958,685) (d)				785,428,146
Other Assets/(Liabilities) — 0.0%				247,585
NET ASSETS — 100.0%			$	785,675,731

Abbreviation Legend

ADR	American Depositary Receipt
ETF	Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Non-income producing security.

(b) Denotes all or a portion of security on loan. The total value of securities on loan as of March 31, 2023, was $777,451 or 0.10% of net assets. The Fund received $794,229 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 $4,752,957. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 10/31/24 - 03/31/25 and an aggregate market value, including accrued interest, of $4,847,598.

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

MML Equity Rotation Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.9%
COMMON STOCK — 99.9%
Basic Materials — 2.1%
Chemicals — 1.5%
Air Products & Chemicals, Inc.		321	$	92,194
CF Industries Holdings, Inc.		507		36,753
Dow, Inc.		396		21,709
DuPont de Nemours, Inc.		561		40,263
FMC Corp.		118		14,411
Linde PLC		1,285		456,740
LyondellBasell Industries NV Class A		329		30,890
The Sherwin-Williams Co.		79		17,757
				710,717
Iron & Steel — 0.5%
Nucor Corp.		835		128,983
Reliance Steel & Aluminum Co.		307		78,819
Steel Dynamics, Inc.		457		51,668
				259,470
Mining — 0.1%
Newmont Corp.		355		17,402
Royal Gold, Inc.		134		17,381
Southern Copper Corp.		202		15,403
				50,186
				1,020,373
Communications — 3.8%
Advertising — 0.1%
The Interpublic Group of Cos., Inc.		501		18,657
Omnicom Group, Inc.		279		26,321
				44,978
Internet — 1.7%
Alphabet, Inc. Class A (a)		3,599		373,324
Alphabet, Inc. Class C (a)		3,128		325,312
Amazon.com, Inc. (a)		320		33,053
Booking Holdings, Inc. (a)		19		50,396
Palo Alto Networks, Inc. (a)		110		21,971
VeriSign, Inc. (a)		78		16,484
				820,540
Media — 0.2%
Comcast Corp. Class A		1,186		44,961

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
FactSet Research Systems, Inc.		125	$	51,886
				96,847
Telecommunications — 1.8%
Arista Networks, Inc. (a)		285		47,840
AT&T, Inc.		9,682		186,378
Cisco Systems, Inc.		7,483		391,174
Corning, Inc.		716		25,260
Juniper Networks, Inc.		411		14,147
Motorola Solutions, Inc.		329		94,137
T-Mobile US, Inc. (a)		758		109,789
Verizon Communications, Inc.		995		38,696
				907,421
				1,869,786
Consumer, Cyclical — 11.8%
Airlines — 0.0%
Southwest Airlines Co.		362		11,779
Apparel — 0.1%
NIKE, Inc. Class B		303		37,160
Auto Manufacturers — 0.5%
Cummins, Inc.		660		157,661
PACCAR, Inc.		1,315		96,258
				253,919
Auto Parts & Equipment — 0.0%
Gentex Corp.		518		14,519
Distribution & Wholesale — 0.6%
Copart, Inc. (a)		863		64,906
Fastenal Co.		1,025		55,289
LKQ Corp.		223		12,657
W.W. Grainger, Inc.		176		121,231
Watsco, Inc. (b)		87		27,680
				281,763
Retail — 10.6%
AutoZone, Inc. (a)		110		270,396
BJ's Wholesale Club Holdings, Inc. (a)		220		16,735
Casey's General Stores, Inc.		269		58,228
Chipotle Mexican Grill, Inc. (a)		25		42,707
Costco Wholesale Corp.		1,821		904,800
Dollar General Corp.		1,077		226,665
Dollar Tree, Inc. (a)		221		31,725
Genuine Parts Co.		654		109,421
The Home Depot, Inc.		1,611		475,438
Lowe's Cos., Inc.		753		150,577
Lululemon Athletica, Inc. (a)		88		32,049
McDonald's Corp.		1,873		523,710
O'Reilly Automotive, Inc. (a)		508		431,282
Ross Stores, Inc.		592		62,829
Starbucks Corp.		2,159		224,817
Target Corp.		289		47,867

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
The TJX Cos., Inc.		5,218	$	408,882
Tractor Supply Co.		378		88,845
Ulta Beauty, Inc. (a)		50		27,284
Walmart, Inc.		6,106		900,330
Yum! Brands, Inc.		859		113,457
				5,148,044
				5,747,184
Consumer, Non-cyclical — 33.3%
Agriculture — 2.3%
Altria Group, Inc.		3,934		175,535
Archer-Daniels-Midland Co.		4,716		375,677
Bunge Ltd.		133		12,704
Darling Ingredients, Inc. (a)		167		9,753
Philip Morris International, Inc.		5,794		563,466
				1,137,135
Beverages — 3.3%
Brown-Forman Corp. Class B		413		26,543
The Coca-Cola Co.		10,034		622,409
Constellation Brands, Inc. Class A		161		36,368
Keurig Dr Pepper, Inc.		877		30,941
Monster Beverage Corp. (a)		3,462		186,983
PepsiCo, Inc.		3,706		675,604
				1,578,848
Biotechnology — 4.4%
Amgen, Inc.		2,137		516,620
Biogen, Inc. (a)		44		12,233
Corteva, Inc.		3,387		204,270
Gilead Sciences, Inc.		3,781		313,710
Incyte Corp. (a)		523		37,797
Regeneron Pharmaceuticals, Inc. (a)		518		425,625
Royalty Pharma PLC Class A		379		13,656
United Therapeutics Corp. (a)		147		32,922
Vertex Pharmaceuticals, Inc. (a)		1,919		604,619
				2,161,452
Commercial Services — 2.4%
Automatic Data Processing, Inc.		2,821		628,039
Booz Allen Hamilton Holding Corp.		213		19,743
Cintas Corp.		231		106,879
CoStar Group, Inc. (a)		200		13,770
FTI Consulting, Inc. (a)		179		35,326
Gartner, Inc. (a)		165		53,752
Grand Canyon Education, Inc. (a)		192		21,869
H&R Block, Inc.		925		32,606
Moody's Corp.		164		50,188
Rollins, Inc.		1,943		72,921
S&P Global, Inc.		351		121,014
Service Corp. International		167		11,486
Verisk Analytics, Inc.		84		16,116
				1,183,709

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Cosmetics & Personal Care — 2.2%
Colgate-Palmolive Co.		2,532	$	190,280
The Estee Lauder Cos., Inc. Class A		86		21,196
The Procter & Gamble Co.		5,605		833,407
				1,044,883
Food — 1.3%
Campbell Soup Co.		320		17,594
Conagra Brands, Inc.		318		11,944
General Mills, Inc.		1,497		127,934
The Hershey Co.		411		104,562
Hormel Foods Corp.		555		22,133
The J.M. Smucker Co.		139		21,874
Kellogg Co.		411		27,520
The Kraft Heinz Co.		589		22,777
The Kroger Co.		1,433		70,747
Lamb Weston Holdings, Inc.		163		17,037
Mondelez International, Inc. Class A		1,857		129,470
Sysco Corp.		851		65,723
				639,315
Health Care – Products — 1.3%
Abbott Laboratories		1,727		174,876
Boston Scientific Corp. (a)		1,050		52,531
Danaher Corp.		338		85,189
Globus Medical, Inc. Class A (a)		153		8,666
Hologic, Inc. (a)		430		34,701
IDEXX Laboratories, Inc. (a)		36		18,003
Intuitive Surgical, Inc. (a)		190		48,539
Medtronic PLC		664		53,532
ResMed, Inc.		139		30,440
Stryker Corp.		201		57,379
Thermo Fisher Scientific, Inc.		64		36,888
Waters Corp. (a)		120		37,156
				637,900
Health Care – Services — 2.7%
Chemed Corp.		66		35,492
Elevance Health, Inc.		266		122,310
HCA Healthcare, Inc.		74		19,512
Laboratory Corp. of America Holdings		48		11,012
Molina Healthcare, Inc. (a)		113		30,226
Quest Diagnostics, Inc.		198		28,013
UnitedHealth Group, Inc.		2,293		1,083,649
				1,330,214
Household Products & Wares — 0.2%
Church & Dwight Co., Inc.		150		13,261
Kimberly-Clark Corp.		548		73,553
				86,814
Pharmaceuticals — 13.2%
AbbVie, Inc.		4,343		692,144
AmerisourceBergen Corp.		1,285		205,741

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Becton Dickinson & Co.		75	$	18,565
Bristol-Myers Squibb Co.		7,578		525,231
Cardinal Health, Inc.		2,004		151,302
The Cigna Corp.		367		93,780
CVS Health Corp.		1,735		128,928
Eli Lilly & Co.		3,161		1,085,551
Henry Schein, Inc. (a)		535		43,624
Johnson & Johnson		11,841		1,835,355
McKesson Corp.		1,288		458,592
Merck & Co., Inc.		6,581		700,153
Neurocrine Biosciences, Inc. (a)		142		14,373
Pfizer, Inc.		10,631		433,745
Zoetis, Inc.		78		12,982
				6,400,066
				16,200,336
Energy — 10.4%
Energy – Alternate Sources — 0.1%
First Solar, Inc. (a)		127		27,622
Oil & Gas — 10.1%
Chesapeake Energy Corp.		185		14,067
Chevron Corp.		11,108		1,812,381
ConocoPhillips		2,055		203,877
EOG Resources, Inc.		806		92,392
Exxon Mobil Corp.		22,453		2,462,196
Hess Corp.		133		17,601
Marathon Petroleum Corp.		567		76,449
Phillips 66		1,247		126,421
Pioneer Natural Resources Co.		179		36,559
Texas Pacific Land Corp.		5		8,505
Valero Energy Corp.		635		88,646
				4,939,094
Pipelines — 0.2%
Cheniere Energy, Inc.		182		28,683
Kinder Morgan, Inc.		1,492		26,125
The Williams Cos., Inc.		861		25,710
				80,518
				5,047,234
Financial — 13.2%
Banks — 0.1%
Bank of America Corp.		376		10,754
The Goldman Sachs Group, Inc.		49		16,028
JP Morgan Chase & Co.		250		32,578
Wells Fargo & Co.		346		12,933
				72,293
Diversified Financial Services — 5.2%
American Express Co.		285		47,011
Apollo Global Management, Inc.		297		18,758
BlackRock, Inc.		30		20,074

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Cboe Global Markets, Inc.		208	$	27,922
LPL Financial Holdings, Inc.		68		13,763
Mastercard, Inc. Class A		2,243		815,129
Nasdaq, Inc.		554		30,287
SEI Investments Co.		497		28,602
T. Rowe Price Group, Inc.		102		11,516
Visa, Inc. Class A		6,630		1,494,800
				2,507,862
Insurance — 7.3%
Aflac, Inc.		262		16,904
The Allstate Corp.		490		54,297
Aon PLC Class A		164		51,708
Arch Capital Group Ltd. (a)		623		42,283
Arthur J Gallagher & Co.		212		40,558
Berkshire Hathaway, Inc. Class B (a)		7,850		2,423,844
Brown & Brown, Inc.		221		12,690
Chubb Ltd.		488		94,760
Cincinnati Financial Corp.		360		40,349
Erie Indemnity Co. Class A		225		52,123
Everest Re Group Ltd.		44		15,753
Markel Corp. (a)		18		22,993
Marsh & McLennan Cos., Inc.		1,886		314,113
Old Republic International Corp.		516		12,885
The Progressive Corp.		1,321		188,982
The Travelers Cos., Inc.		173		29,654
W.R. Berkley Corp.		242		15,067
Willis Towers Watson PLC		473		109,916
				3,538,879
Private Equity — 0.1%
Blackstone, Inc.		514		45,150
Real Estate Investment Trusts (REITS) — 0.5%
American Tower Corp.		125		25,543
Extra Space Storage, Inc.		97		15,804
Prologis, Inc.		199		24,829
Public Storage		402		121,460
VICI Properties, Inc.		1,120		36,534
Weyerhaeuser Co.		1,015		30,582
				254,752
				6,418,936
Industrial — 7.8%
Aerospace & Defense — 2.8%
Curtiss-Wright Corp.		74		13,043
General Dynamics Corp.		564		128,710
HEICO Corp.		87		14,881
HEICO Corp. Class A		112		15,221
L3 Harris Technologies, Inc.		397		77,907
Lockheed Martin Corp.		1,661		785,205
Northrop Grumman Corp.		442		204,080
Raytheon Technologies Corp.		1,429		139,942
				1,378,989

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Building Materials — 0.2%
Carrier Global Corp.		331	$	15,143
Johnson Controls International PLC		411		24,751
Lennox International, Inc.		58		14,574
Trane Technologies PLC		158		29,069
				83,537
Electrical Components & Equipment — 0.1%
AMETEK, Inc.		258		37,495
Electronics — 0.9%
Agilent Technologies, Inc.		522		72,214
Allegion PLC		119		12,701
Amphenol Corp. Class A		421		34,404
Honeywell International, Inc.		886		169,332
Hubbell, Inc.		110		26,764
Keysight Technologies, Inc. (a)		254		41,016
Mettler-Toledo International, Inc. (a)		42		64,269
				420,700
Environmental Controls — 0.6%
Republic Services, Inc.		422		57,063
Tetra Tech, Inc.		141		20,714
Waste Management, Inc.		1,253		204,452
				282,229
Hand & Machine Tools — 0.2%
Lincoln Electric Holdings, Inc.		169		28,578
Snap-on, Inc.		258		63,697
				92,275
Machinery – Construction & Mining — 0.3%
BWX Technologies, Inc.		193		12,167
Caterpillar, Inc.		698		159,730
				171,897
Machinery – Diversified — 0.7%
AGCO Corp.		85		11,492
Deere & Co.		229		94,550
Graco, Inc.		515		37,600
IDEX Corp.		143		33,037
Nordson Corp.		104		23,115
Otis Worldwide Corp.		559		47,180
The Toro Co.		728		80,924
Westinghouse Air Brake Technologies Corp.		110		11,117
Xylem, Inc.		102		10,679
				349,694
Miscellaneous - Manufacturing — 0.6%
3M Co.		334		35,107
Donaldson Co., Inc.		325		21,236
Eaton Corp. PLC		339		58,084
Illinois Tool Works, Inc.		610		148,504

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Parker-Hannifin Corp.		95	$	31,930
				294,861
Packaging & Containers — 0.1%
Amcor PLC		1,392		15,841
Ardagh Group SA (a) (b) (c) (d)		463		4,915
Packaging Corp. of America		175		24,295
				45,051
Transportation — 1.3%
C.H. Robinson Worldwide, Inc.		164		16,297
CSX Corp.		1,503		45,000
Expeditors International of Washington, Inc.		410		45,149
J.B. Hunt Transport Services, Inc.		251		44,041
Landstar System, Inc.		174		31,191
Norfolk Southern Corp.		191		40,492
Old Dominion Freight Line, Inc.		170		57,943
Union Pacific Corp.		594		119,548
United Parcel Service, Inc. Class B		1,203		233,370
				633,031
				3,789,759
Technology — 15.8%
Computers — 6.5%
Accenture PLC Class A		659		188,349
Amdocs Ltd.		801		76,920
Apple, Inc.		16,883		2,784,007
Cognizant Technology Solutions Corp. Class A		288		17,548
Fortinet, Inc. (a)		233		15,485
Hewlett Packard Enterprise Co.		662		10,545
International Business Machines Corp.		521		68,298
Leidos Holdings, Inc.		134		12,336
				3,173,488
Semiconductors — 2.1%
Analog Devices, Inc.		886		174,737
Applied Materials, Inc.		246		30,216
Broadcom, Inc.		140		89,816
Intel Corp.		451		14,734
KLA Corp.		213		85,023
QUALCOMM, Inc.		189		24,113
Texas Instruments, Inc.		3,280		610,113
				1,028,752
Software — 7.2%
Activision Blizzard, Inc.		2,795		239,224
Adobe, Inc. (a)		88		33,913
Broadridge Financial Solutions, Inc.		97		14,217
Cadence Design Systems, Inc. (a)		524		110,087
Electronic Arts, Inc.		768		92,506
Fair Isaac Corp. (a)		78		54,810
Fiserv, Inc. (a)		309		34,926
Jack Henry & Associates, Inc.		511		77,018

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Microsoft Corp.		8,320	$	2,398,656
MSCI, Inc.		123		68,842
Oracle Corp.		502		46,646
Paychex, Inc.		1,351		154,811
Roper Technologies, Inc.		37		16,305
Synopsys, Inc. (a)		314		121,282
VMware, Inc. Class A (a)		362		45,196
				3,508,439
				7,710,679
Utilities — 1.7%
Electric — 1.6%
The AES Corp.		471		11,342
Ameren Corp.		270		23,325
American Electric Power Co., Inc.		670		60,963
CMS Energy Corp.		339		20,808
Consolidated Edison, Inc.		534		51,088
Dominion Energy, Inc.		270		15,096
DTE Energy Co.		398		43,597
Duke Energy Corp.		729		70,327
Entergy Corp.		216		23,272
Eversource Energy		218		17,061
Exelon Corp.		1,010		42,309
FirstEnergy Corp.		382		15,303
NextEra Energy, Inc.		1,411		108,760
NRG Energy, Inc.		380		13,030
Pinnacle West Capital Corp.		144		11,411
PPL Corp.		845		23,482
Public Service Enterprise Group, Inc.		303		18,922
Sempra Energy		449		67,871
The Southern Co.		1,288		89,619
WEC Energy Group, Inc.		385		36,494
Xcel Energy, Inc.		660		44,510
				808,590
Gas — 0.1%
Atmos Energy Corp.		203		22,809
National Fuel Gas Co.		223		12,876
				35,685
				844,275
TOTAL COMMON STOCK (Cost $48,036,400)				48,648,562
TOTAL EQUITIES (Cost $48,036,400)				48,648,562

MML Equity Rotation Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
MUTUAL FUNDS — 0.1%
Diversified Financial Services — 0.1%
State Street Navigator Securities Lending Government Money Market Portfolio (e)		27,928	$	27,928
TOTAL MUTUAL FUNDS (Cost $27,928)				27,928
TOTAL LONG-TERM INVESTMENTS (Cost $48,064,328)				48,676,490
TOTAL INVESTMENTS — 100.0% (Cost $48,064,328) (f)				48,676,490
Other Assets/(Liabilities) — (0.0)%				(17,887)
NET ASSETS — 100.0%			$	48,658,603

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 March 31, 2023, was $38,697 or 0.08% of net assets. The Fund received $11,641 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) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At March 31, 2023, these securities amounted to a value of $4,915 or 0.01% of net assets.

(d) Investment is valued using significant unobservable inputs.

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

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

MML High Yield Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 93.9%
BANK LOANS — 2.3%
Cosmetics & Personal Care — 0.3%
Journey Personal Care Corp., 2021 Term Loan B, 3 mo. USD LIBOR + 4.250%
9.409% VRN 3/01/28	$	199,492	$	152,404
Food — 0.3%
Florida Food Products LLC, Term Loan, 1 mo. USD LIBOR + 5.000%
9.840% VRN 10/18/28		165,608		153,188
Lodging — 0.3%
Four Seasons Hotels Ltd., 2022 Term Loan B,
0.000% VRN11/30/29 (a)		179,876		179,677
Packaging & Containers — 0.2%
Clydesdale Acquisition Holdings, Inc., Term Loan B, 1 mo. SOFR CME + 4.175%
9.082% VRN 4/13/29		95,246		92,889
Software — 1.2%
Finastra USA, Inc., USD 2nd Lien Term Loan, 3 mo. USD LIBOR + 7.250%
12.075% VRN 6/13/25		475,000		379,568
Ivanti Software, Inc., 2021 Term Loan B, 3 mo. USD LIBOR + 4.250%
9.212% VRN 12/01/27		168,725		137,813
Quest Software US Holdings, Inc., 2022 2nd Lien Term Loan, 3 mo. USD SOFRTE + 7.500%
12.326% VRN 2/01/30		246,796		148,077
				665,458
TOTAL BANK LOANS (Cost $1,453,651)				1,243,616
CORPORATE DEBT — 91.6%
Advertising — 0.7%
CMG Media Corp.
8.875% 12/15/27 (b)		278,000		210,168
Stagwell Global LLC
5.625% 8/15/29 (b)		220,000		192,926
				403,094
Aerospace & Defense — 0.5%
Spirit AeroSystems, Inc.
9.375% 11/30/29 (b)		83,000		90,574
TransDigm, Inc.
6.750% 8/15/28 (b)		34,000		34,382

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Triumph Group, Inc.
9.000% 3/15/28 (b)	$	164,000	$	164,000
				288,956
Agriculture — 0.2%
Darling Ingredients, Inc.
6.000% 6/15/30 (b)		130,000		129,558
Airlines — 2.8%
American Airlines, Inc.
11.750% 7/15/25 (b)		71,000		77,687
American Airlines, Inc. /AAdvantage Loyalty IP Ltd.
5.500% 4/20/26 (b)		535,000		526,538
5.750% 4/20/29 (b)		229,000		219,704
Hawaiian Brand Intellectual Property Ltd. / HawaiianMiles Loyalty Ltd.
5.750% 1/20/26 (b)		135,022		128,184
Mileage Plus Holdings LLC / Mileage Plus Intellectual Property Assets Ltd.
6.500% 6/20/27 (b)		225,248		224,522
Spirit Loyalty Cayman Ltd./Spirit IP Cayman Ltd.
8.000% 9/20/25 (b)		134,000		134,863
United Airlines, Inc.
4.375% 4/15/26 (b)		122,000		116,850
4.625% 4/15/29 (b)		121,000		109,661
				1,538,009
Apparel — 0.1%
Hanesbrands, Inc.
9.000% 2/15/31 (b) (c)		32,000		32,760
Auto Manufacturers — 1.5%
Ford Motor Co.
3.250% 2/12/32		434,000		341,203
7.450% 7/16/31		153,000		161,751
Ford Motor Credit Co. LLC
4.000% 11/13/30		402,000		341,353
				844,307
Auto Parts & Equipment — 0.5%
Adient Global Holdings Ltd.
4.875% 8/15/26 (b)		277,000		266,959
Biotechnology — 0.3%
Emergent BioSolutions, Inc.
3.875% 8/15/28 (b)		347,000		169,350
Building Materials — 1.5%
Jeld-Wen, Inc.
4.875% 12/15/27 (b)		68,000		57,839
New Enterprise Stone & Lime Co., Inc.
5.250% 7/15/28 (b)		222,000		196,225
9.750% 7/15/28 (b)		602,000		574,910
				828,974
Chemicals — 4.5%
Avient Corp.
7.125% 8/01/30 (b)		187,000		192,834

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Celanese US Holdings LLC
6.379% 7/15/32 (c)	$	287,000	$	290,742
Consolidated Energy Finance SA
5.625% 10/15/28 (b)		595,000		511,819
LSF11 A5 HoldCo LLC
6.625% 10/15/29 (b)		294,000		247,216
Methanex Corp.
5.125% 10/15/27		144,000		135,667
Olympus Water US Holding Corp.
4.250% 10/01/28 (b)		326,000		269,723
Olympus Water US Holding Corp.
6.250% 10/01/29 (b) (c)		459,000		343,883
Polar US Borrower LLC / Schenectady International Group, Inc.
6.750% 5/15/26 (b)		314,000		161,474
Tronox, Inc.
4.625% 3/15/29 (b)		163,000		136,235
Vibrantz Technologies, Inc.
9.000% 2/15/30 (b) (c)		209,000		160,428
				2,450,021
Coal — 0.6%
Coronado Finance Pty Ltd.
10.750% 5/15/26 (b)		290,000		302,779
Commercial Services — 3.4%
Alta Equipment Group, Inc.
5.625% 4/15/26 (b)		378,000		353,454
APi Group DE, Inc.
4.750% 10/15/29 (b)		372,000		327,247
Carriage Services, Inc.
4.250% 5/15/29 (b)		92,000		75,775
The Hertz Corp.
5.000% 12/01/29 (b)		176,000		145,767
Prime Security Services Borrower LLC / Prime Finance, Inc.
6.250% 1/15/28 (b)		418,000		390,830
PROG Holdings, Inc.
6.000% 11/15/29 (b)		304,000		258,402
Sabre GLBL, Inc.
7.375% 9/01/25 (b)		172,000		153,681
9.250% 4/15/25 (b)		171,000		159,557
				1,864,713
Computers — 0.7%
Presidio Holdings, Inc.
8.250% 2/01/28 (b)		289,000		274,602
Seagate HDD Cayman
9.625% 12/01/32 (b)		100,620		112,724
				387,326
Cosmetics & Personal Care — 0.8%
Coty, Inc. /HFC Prestige Products, Inc. /HFC Prestige International US LLC
4.750% 1/15/29 (b)		446,000		416,447
Distribution & Wholesale — 0.9%
American Builders & Contractors Supply Co., Inc.
3.875% 11/15/29 (b)		185,000		157,964

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Resideo Funding, Inc.
4.000% 9/01/29 (b)	$	372,000	$	309,285
				467,249
Diversified Financial Services — 6.0%
Coinbase Global, Inc.
3.375% 10/01/28 (b)		168,000		102,529
3.625% 10/01/31 (b)		136,000		76,160
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (b)		1,498,293		1,351,970
Jefferson Capital Holdings LLC
6.000% 8/15/26 (b)		380,000		321,765
Midcap Financial Issuer Trust
5.625% 1/15/30 (b)		339,000		267,813
6.500% 5/01/28 (b)		270,000		229,684
OneMain Finance Corp.
4.000% 9/15/30		169,000		126,750
5.375% 11/15/29		177,000		148,904
PRA Group, Inc.
5.000% 10/01/29 (b) (c)		583,000		487,641
7.375% 9/01/25 (b)		168,000		167,118
				3,280,334
Electric — 1.9%
PG&E Corp.
5.000% 7/01/28		567,000		532,441
Pike Corp.
5.500% 9/01/28 (b)		593,000		518,875
				1,051,316
Electronics — 0.7%
Atkore, Inc.
4.250% 6/01/31 (b)		461,000		403,538
Engineering & Construction — 1.4%
Arcosa, Inc.
4.375% 4/15/29 (b)		230,000		204,553
Dycom Industries, Inc.
4.500% 4/15/29 (b)		99,000		89,347
Global Infrastructure Solutions, Inc.
5.625% 6/01/29 (b)		126,000		103,950
7.500% 4/15/32 (b)		140,000		120,471
MasTec, Inc.
4.500% 8/15/28 (b) (c)		130,000		120,018
Railworks Holdings LP / Railworks Rally, Inc.
8.250% 11/15/28 (b)		117,000		108,810
				747,149
Entertainment — 0.7%
Live Nation Entertainment, Inc.
4.750% 10/15/27 (b)		260,000		240,500
Midwest Gaming Borrower LLC/Midwest Gaming Finance Corp.
4.875% 5/01/29 (b)		136,000		118,229
				358,729

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Environmental Controls — 0.3%
Harsco Corp.
5.750% 7/31/27 (b)	$	188,000	$	147,588
Food — 1.0%
Albertsons Cos. Inc. / Safeway, Inc. / New Albertsons LP / Albertsons LLC
6.500% 2/15/28 (b)		219,000		219,548
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
3.625% 1/15/32 (b)		420,000		348,167
				567,715
Hand & Machine Tools — 0.4%
Regal Rexnord Corp.
6.400% 4/15/33 (b)		230,000		229,984
Health Care – Products — 0.5%
Garden Spinco Corp.
8.625% 7/20/30 (b)		248,000		264,960
Health Care – Services — 8.1%
Centene Corp.
4.625% 12/15/29		629,000		596,336
Charles River Laboratories International, Inc.
3.750% 3/15/29 (b)		7,000		6,217
4.250% 5/01/28 (b)		329,000		307,906
CHS/Community Health Systems, Inc.
4.750% 2/15/31 (b)		108,000		79,733
5.250% 5/15/30 (b)		422,000		328,780
6.000% 1/15/29 (b)		184,000		155,642
6.125% 4/01/30 (b)		213,000		130,158
HCA, Inc.
3.500% 9/01/30		776,000		690,759
5.625% 9/01/28		673,000		680,332
Molina Healthcare, Inc.
4.375% 6/15/28 (b)		187,000		173,964
Radiology Partners, Inc.
9.250% 2/01/28 (b)		655,000		361,888
Tenet Healthcare Corp.
4.375% 1/15/30		165,000		148,088
4.875% 1/01/26		179,000		175,484
6.125% 10/01/28		493,000		471,135
6.125% 6/15/30 (b)		96,000		94,704
				4,401,126
Home Builders — 1.9%
Ashton Woods USA LLC / Ashton Woods Finance Co.
4.625% 8/01/29 (b)		198,000		160,380
M/I Homes, Inc.
4.950% 2/01/28		368,000		340,374
Mattamy Group Corp.
4.625% 3/01/30 (b)		617,000		536,530
				1,037,284
Insurance — 1.4%
Alliant Holdings Intermediate LLC / Alliant Holdings Co-Issuer
6.750% 4/15/28 (b)		362,000		357,927

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Highlands Holdings Bond Issuer Ltd. / Highlands Holdings Bond Co-Issuer, Inc.
7.625% 10/15/25 (b)	$	430,269	$	397,295
				755,222
Internet — 0.9%
Cars.com, Inc.
6.375% 11/01/28 (b)		254,000		240,030
Getty Images, Inc.
9.750% 3/01/27 (b)		74,000		73,907
Millennium Escrow Corp.
6.625% 8/01/26 (b)		168,000		109,200
Uber Technologies, Inc.
4.500% 8/15/29 (b)		78,000		71,078
				494,215
Investment Companies — 0.3%
Icahn Enterprises LP/ Icahn Enterprises Finance Corp.
4.750% 9/15/24		178,000		173,578
Leisure Time — 1.9%
Carnival Corp.
5.750% 3/01/27 (b)		205,000		168,612
6.000% 5/01/29 (b)		168,000		133,748
NCL Corp. Ltd.
5.875% 3/15/26 (b)		118,000		100,300
5.875% 2/15/27 (b)		49,000		46,047
8.375% 2/01/28 (b)		100,000		100,343
NCL Finance Ltd.
6.125% 3/15/28 (b) (c)		94,000		76,163
Royal Caribbean Cruises Ltd.
5.500% 8/31/26 (b)		266,000		248,856
5.500% 4/01/28 (b)		77,000		67,665
Viking Cruises Ltd.
7.000% 2/15/29 (b)		126,000		108,089
				1,049,823
Lodging — 1.0%
Hilton Grand Vacations Borrower Escrow LLC / Hilton Grand Vacations Borrower Esc
4.875% 7/01/31 (b)		199,000		169,948
Sugarhouse HSP Gaming Prop Mezz LP / Sugarhouse HSP Gaming Finance Corp.
5.875% 5/15/25 (b)		155,000		148,025
Travel & Leisure Co.
6.625% 7/31/26 (b)		213,000		213,827
				531,800
Media — 6.2%
Altice Financing SA
5.000% 1/15/28 (b)		152,000		125,263
CCO Holdings LLC/CCO Holdings Capital Corp.
4.250% 1/15/34 (b)		486,000		380,110
4.500% 5/01/32		95,000		77,693
5.000% 2/01/28 (b)		130,000		119,925
5.375% 6/01/29 (b)		162,000		148,756

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CSC Holdings LLC
4.625% 12/01/30 (b)	$	311,000	$	153,354
7.500% 4/01/28 (b)		75,000		47,813
Cumulus Media New Holdings, Inc.
6.750% 7/01/26 (b) (c)		157,000		119,320
DIRECTV Financing LLC / DIRECTV Financing Co-Obligor, Inc.
5.875% 8/15/27 (b)		321,000		289,044
DISH DBS Corp.
5.250% 12/01/26 (b)		53,000		42,003
5.750% 12/01/28 (b)		68,000		50,745
7.375% 7/01/28		32,000		18,251
DISH Network Corp.
3.375% 8/15/26		680,000		350,200
Gray Escrow II, Inc.
5.375% 11/15/31 (b)		246,000		163,344
iHeartCommunications, Inc.
8.375% 5/01/27 (c)		172,710		125,920
LCPR Senior Secured Financing DAC
5.125% 7/15/29 (b)		223,000		187,848
6.750% 10/15/27 (b)		283,000		263,711
Sirius XM Radio, Inc.
3.875% 9/01/31 (b)		333,000		259,412
Univision Communications, Inc.
7.375% 6/30/30 (b)		71,000		67,126
Virgin Media Secured Finance PLC
4.500% 8/15/30 (b)		280,000		240,747
Virgin Media Vendor Financing Notes IV DAC
5.000% 7/15/28 (b)		200,000		177,750
				3,408,335
Mining — 2.1%
Arconic Corp.
6.125% 2/15/28 (b)		178,000		175,306
Compass Minerals International, Inc.
4.875% 7/15/24 (b)		294,000		279,203
First Quantum Minerals Ltd.
6.875% 10/15/27 (b)		400,000		388,204
Novelis Corp.
3.250% 11/15/26 (b)		48,000		43,865
3.875% 8/15/31 (b)		341,000		282,604
				1,169,182
Miscellaneous - Manufacturing — 0.3%
Amsted Industries, Inc.
5.625% 7/01/27 (b)		175,000		170,188
Oil & Gas — 9.2%
Apache Corp.
4.750% 4/15/43		65,000		48,588
5.100% 9/01/40		130,000		110,175
5.350% 7/01/49		197,000		152,014
Chesapeake Energy Corp.
5.875% 2/01/29 (b)		205,000		195,137
Comstock Resources, Inc.
5.875% 1/15/30 (b)		114,000		97,943
6.750% 3/01/29 (b)		126,000		114,818

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
CVR Energy, Inc.
5.750% 2/15/28 (b)	$	350,000	$	321,174
Hilcorp Energy I LP / Hilcorp Finance Co.
6.250% 11/01/28 (b)		365,000		346,377
Murphy Oil Corp.
6.375% 7/15/28		182,000		179,199
Nabors Industries Ltd.
7.250% 1/15/26 (b)		339,000		320,308
7.500% 1/15/28 (b)		169,000		155,764
Nabors Industries, Inc.
5.750% 2/01/25		55,000		53,281
7.375% 5/15/27 (b)		227,000		221,892
Neptune Energy Bondco PLC
6.625% 5/15/25 (b)		594,000		575,741
Occidental Petroleum Corp.
6.125% 1/01/31		387,000		401,675
6.200% 3/15/40		397,000		399,144
6.450% 9/15/36		215,000		225,520
6.950% 7/01/24		42,000		42,529
Parkland Corp.
4.625% 5/01/30 (b)		105,000		93,345
5.875% 7/15/27 (b)		269,000		260,954
Range Resources Corp. Co.
8.250% 1/15/29		123,000		127,893
Southwestern Energy Co.
4.750% 2/01/32		109,000		96,246
Sunoco LP/Sunoco Finance Corp.
6.000% 4/15/27		172,000		169,813
Transocean Poseidon Ltd.
6.875% 2/01/27 (b)		23,563		23,091
Transocean, Inc.
7.250% 11/01/25 (b)		172,000		162,540
7.500% 1/15/26 (b)		140,000		127,114
				5,022,275
Oil & Gas Services — 0.7%
Weatherford International Ltd.
6.500% 9/15/28 (b)		19,000		19,033
8.625% 4/30/30 (b)		368,000		376,486
				395,519
Packaging & Containers — 2.6%
Ardagh Metal Packaging Finance USA LLC / Ardagh Metal Packaging Finance PLC, SERIES 144A, 144A,
4.000% 9/01/29 (b)		54,000		42,255
Clydesdale Acquisition Holdings, Inc.
6.625% 4/15/29 (b)		79,000		76,037
8.750% 4/15/30 (b)		177,000		160,847
Graham Packaging Co., Inc.
7.125% 8/15/28 (b)		143,000		123,665
Mauser Packaging Solutions Holding Co.
7.875% 8/15/26 (b)		312,000		312,000
9.250% 4/15/27 (b)		446,000		412,099
Trident TPI Holdings, Inc.
9.250% 8/01/24 (b)		291,000		288,061
				1,414,964

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pharmaceuticals — 2.4%
1375209 BC Ltd.
9.000% 1/30/28 (b)	$	136,000	$	134,980
AdaptHealth LLC
5.125% 3/01/30 (b)		365,000		309,639
Bausch Health Cos., Inc.
4.875% 6/01/28 (b)		215,000		126,850
11.000% 9/30/28 (b)		242,000		176,584
14.000% 10/15/30 (b)		47,000		26,459
Jazz Securities DAC
4.375% 1/15/29 (b)		187,000		171,572
Organon & Co. / Organon Foreign Debt Co-Issuer BV
4.125% 4/30/28 (b)		180,000		164,540
Perrigo Finance Unlimited Co.
4.400% STEP 6/15/30		194,000		174,152
				1,284,776
Pipelines — 6.4%
Antero Midstream Partners LP / Antero Midstream Finance Corp.
5.375% 6/15/29 (b)		273,000		256,931
CQP Holdco LP / BIP-V Chinook Holdco LLC
5.500% 6/15/31 (b)		379,000		340,664
EnLink Midstream LLC
5.375% 6/01/29		173,000		166,513
EnLink Midstream Partners LP
4.850% 7/15/26		56,000		53,900
5.450% 6/01/47		97,000		77,307
5.600% 4/01/44		257,000		208,170
EQM Midstream Partners LP
4.500% 1/15/29 (b)		157,000		133,450
6.000% 7/01/25 (b)		67,000		66,236
6.500% 7/01/27 (b)		151,000		146,361
Genesis Energy LP / Genesis Energy Finance Corp.
8.875% 4/15/30		105,000		106,743
Harvest Midstream I LP
7.500% 9/01/28 (b)		514,000		512,623
ITT Holdings LLC
6.500% 8/01/29 (b)		565,000		477,041
NGL Energy Operating LLC / NGL Energy Finance Corp.
7.500% 2/01/26 (b)		350,000		337,766
Tallgrass Energy Partners LP / Tallgrass Energy Finance Corp
7.500% 10/01/25 (b)		171,000		170,927
Venture Global Calcasieu Pass LLC
3.875% 8/15/29 (b)		133,000		119,966
4.125% 8/15/31 (b)		152,000		133,544
Western Midstream Operating LP
5.450% 4/01/44		202,000		176,148
				3,484,290
Real Estate — 0.4%
Realogy Group LLC / Realogy Co-Issuer Corp.
5.750% 1/15/29 (b)		311,000		232,771
Real Estate Investment Trusts (REITS) — 2.6%
Host Hotels & Resorts LP
2.900% 12/15/31		199,000		155,135

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Ladder Capital Finance Holdings LLLP / Ladder Capital Finance Corp.
4.750% 6/15/29 (b)	$	425,000	$	309,187
MPT Operating Partnership LP / MPT Finance Corp.
5.000% 10/15/27 (c)		189,000		155,453
RLJ Lodging Trust LP
3.750% 7/01/26 (b)		107,000		97,600
4.000% 9/15/29 (b)		126,000		104,802
Service Properties Trust
3.950% 1/15/28		73,000		56,967
4.375% 2/15/30		115,000		85,812
4.950% 2/15/27		58,000		49,098
7.500% 9/15/25		267,000		263,462
Uniti Group LP / Uniti Fiber Holdings, Inc. / CSL Capital LLC
4.750% 4/15/28 (b)		180,000		139,127
				1,416,643
Retail — 3.4%
Asbury Automotive Group, Inc.
4.625% 11/15/29 (b)		148,000		132,460
Bath & Body Works, Inc.
6.750% 7/01/36		97,000		85,845
6.875% 11/01/35		222,000		200,123
BCPE Ulysses Intermediate, Inc.
7.750% 4/01/27 (b)		404,000		317,140
Macy's Retail Holdings LLC
5.875% 4/01/29 (b)		40,000		36,999
5.875% 3/15/30 (b)		71,000		63,012
6.125% 3/15/32 (b)		78,000		68,663
Nordstrom, Inc.
5.000% 1/15/44 (c)		331,000		208,156
Sonic Automotive, Inc.
4.625% 11/15/29 (b) (c)		149,000		124,868
4.875% 11/15/31 (b) (c)		63,000		50,776
Staples, Inc.
7.500% 4/15/26 (b)		160,000		139,918
10.750% 4/15/27 (b)		216,000		156,600
Suburban Propane Partners LP / Suburban Energy Finance Corp.
5.000% 6/01/31 (b)		192,000		167,760
Superior Plus LP / Superior General Partner, Inc.
4.500% 3/15/29 (b)		145,000		129,466
				1,881,786
Software — 1.2%
AthenaHealth Group, Inc.
6.500% 2/15/30 (b)		340,000		275,193
Consensus Cloud Solutions, Inc.
6.000% 10/15/26 (b) (c)		165,000		143,346
Open Text Holdings, Inc.
4.125% 2/15/30 (b)		32,000		27,435
4.125% 12/01/31 (b)		10,000		8,255
Veritas US, Inc./Veritas Bermuda Ltd.
7.500% 9/01/25 (b)		304,000		229,059
				683,288

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Telecommunications — 5.6%
Altice France Holding SA
10.500% 5/15/27 (b)	$	74,000	$	56,610
Altice France SA
5.125% 7/15/29 (b)		368,000		276,920
Connect Finco SARL / Connect US Finco LLC
6.750% 10/01/26 (b)		122,000		114,680
Frontier Communications Holdings LLC
6.000% 1/15/30 (b) (c)		964,000		733,165
GoTo Group, Inc.
5.500% 9/01/27 (b)		103,000		52,873
Intelsat Jackson Holdings S.A.
6.500% 3/15/30 (b)		158,000		144,843
Sprint Capital Corp.
6.875% 11/15/28		476,000		512,414
8.750% 3/15/32		671,000		817,949
T-Mobile USA, Inc.
3.375% 4/15/29		357,000		325,940
				3,035,394
Transportation — 1.1%
Carriage Purchaser, Inc.
7.875% 10/15/29 (b)		191,000		141,345
Seaspan Corp.
5.500% 8/01/29 (b)		571,000		445,279
				586,624
TOTAL CORPORATE DEBT (Cost $56,036,649)				50,070,898
TOTAL BONDS & NOTES (Cost $57,490,300)				51,314,514
	Number of Shares
MUTUAL FUNDS — 5.2%
Diversified Financial Services — 5.2%
State Street Navigator Securities Lending Government Money Market Portfolio (d)		2,865,458		2,865,458
TOTAL MUTUAL FUNDS (Cost $2,865,458)				2,865,458
TOTAL LONG-TERM INVESTMENTS (Cost $60,355,758)				54,179,972
	Principal Amount
SHORT-TERM INVESTMENTS — 4.9%
Commercial Paper — 3.7%
The J M Smucker Co.
5.325% 4/03/23	$	2,000,000		1,999,153
				1,999,153

MML High Yield Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Repurchase Agreement — 1.2%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (e)	$	648,611	$	648,611
TOTAL SHORT-TERM INVESTMENTS (Cost $2,648,028)				2,647,764
TOTAL INVESTMENTS — 104.0% (Cost $63,003,786) (f)				56,827,736
Other Assets/(Liabilities) — (4.0)%				(2,166,035)
NET ASSETS — 100.0%			$	54,661,701

Abbreviation Legend

STEP Step Up Bond

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) All or a portion of the security represents unsettled bank loan commitments at March 31, 2023 where the rate will be determined at time of settlement.

(b) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At March 31, 2023, the aggregate market value of these securities amounted to $38,258,573 or 69.99% of net assets.

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of March 31, 2023, was $2,931,746 or 5.36% of net assets. The Fund received $131,454 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

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

(e) Maturity value of $648,689. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $661,666.

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

MML Inflation-Protected and Income Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 86.3%
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 50.7%
Automobile Asset-Backed Securities — 3.9%
Carvana Auto Receivables Trust, Series 2020-N3, Class B
0.660% 6/12/28	$	1,239,481	$	1,132,438
Drive Auto Receivables Trust, Series 2021-1, Class C
1.020% 6/15/27		923,211		906,193
Hertz Vehicle Financing LLC, Series 2021-1A, Class D
3.980% 12/26/25 (a)		3,400,000		3,126,589
Onemain Direct Auto Receivable Trust, Series 2022-1A, Class C
5.310% 6/14/29 (a)		800,000		766,955
Westlake Automobile Receivables Trust, Series 2020-3A, Class D
1.650% 2/17/26 (a)		2,306,000		2,175,083
				8,107,258
Commercial Mortgage-Backed Securities — 5.7%
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD LIBOR + 1.500%
6.184% FRN 7/15/35 (a)		1,000,000		951,079
BX Commercial Mortgage Trust, Series 2019-XL, Class F, 1 mo. USD Term SOFR + 2.114%
6.942% FRN 10/15/36 (a)		1,487,500		1,437,369
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class D, 1 mo. USD LIBOR + 1.750%
6.434% FRN 12/15/37 (a)		308,865		301,144
COMM Mortgage Trust, Series 2015-LC19, Class D
2.867% 2/10/48 (a)		1,700,000		1,397,670
Credit Suisse Mortgage Capital Certificates
Series 2019-ICE4, Class D, 1 mo. USD LIBOR + 1.600% 6.284% FRN 5/15/36 (a)		3,990,073		3,900,363
Series 2019-ICE4, Class E, 1 mo. USD LIBOR + 2.150% 6.834% FRN 5/15/36 (a)		2,493,796		2,401,238
KNDL Mortgage Trust

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

	Principal Amount		Value
Series 2019-KNSQ, Class D, FRN, 144A, 1 mo. USD LIBOR + 1.350% 6.034% FRN 5/15/36 (a)	$	1,000,000	$	975,642
Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800% 6.484% FRN 5/15/36 (a)		476,000		463,663
				11,828,168
Home Equity Asset-Backed Securities — 0.9%
Centex Home Equity Loan Trust, Series 2006-A, Class M1, 1 mo. USD LIBOR + .450%
5.295% FRN 6/25/36		82,817		82,425
Citigroup Mortgage Loan Trust, Series 2006-HE2, Class M1, 1 mo. USD LIBOR + .435%
5.280% FRN 8/25/36		229,404		227,581
Home Equity Asset Trust, Series 2005-9, Class M1, 1 mo. USD LIBOR + .615%
5.460% FRN 4/25/36		1,315,935		1,279,096
Residential Asset Securities Trust, Series 2005-EMX1, Class M1, 1 mo. USD LIBOR + .645%
5.490% FRN 3/25/35		341,576		340,226
				1,929,328
Other Asset-Backed Securities — 20.9%
321 Henderson Receivables LLC
Series 2006-1A, Class A1, 1 mo. USD LIBOR + .200% 4.884% FRN 3/15/41 (a)		10,603		10,587
Series 2006-3A, Class A1, 1 mo. USD LIBOR + .200% 4.884% FRN 9/15/41 (a)		51,422		50,529
ACHV ABS Trust, Series 2023-1PL, Class A
6.420% 3/18/30 (a)		335,133		334,767
Affirm Asset Securitization Trust
Series 2021-Z1, Class A, 1.070% 8/15/25 (a)		1,146,905		1,119,837
Series 2021-Z2, Class A, 1.170% 11/16/26 (a)		648,770		623,090
Series 2022-X1, Class A, 1.750% 2/15/27 (a)		1,828,916		1,780,614
Series 2018-A, Class A, 1.900% 1/15/25 (a)		428,767		426,403
Series 2022-Z1, Class A, 4.550% 6/15/27 (a)		585,618		576,784
BHG Securitization Trust
Series 2021-B, Class A, 0.900% 10/17/34 (a)		839,181		802,563
Series 2023-A, Class A, 5.550% 4/17/36 (a)		1,500,000		1,487,654
Cascade Funding Mortgage Trust, Series 2021-EBO1, Class A,
0.985% VRN 11/25/50 (a) (b)		1,104,358		1,040,417

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

	Principal Amount		Value
Crossroads Asset Trust, Series 2021-A, Class A2
0.820% 3/20/24 (a)	$	6,125	$	6,109
Elara HGV Timeshare Issuer LLC
Series 2016-A, Class A, 2.730% 4/25/28 (a)		301,107		298,446
Series 2016-A, Class B, 3.220% 4/25/28 (a)		57,399		56,891
Series 2017-A, Class C, 3.310% 3/25/30 (a)		171,724		161,849
FCI Funding LLC
Series 2021-1A, Class A, 1.130% 4/15/33 (a)		1,042,272		1,013,745
Series 2021-1A, Class B, 1.530% 4/15/33 (a)		694,930		673,041
Series 2019-1A, Class A, 3.630% 2/18/31 (a)		5,846		5,838
First Franklin Mortgage Loan Trust
Series 2006-FF15, Class A5, 1 mo. USD LIBOR + .160% 5.005% FRN 11/25/36		338,149		329,062
Series 2005-FF9, Class A4, 1 mo. USD LIBOR + .720% 5.565% FRN 10/25/35		61,147		61,018
FNA VI LLC, Series 21-1A, Class A
1.350% 1/10/32 (a)		2,576,790		2,344,645
Gracie Point International Funding
Series 2021-1A, Class A, 1 mo. USD LIBOR + .750% 5.412% FRN 11/01/23 (a)		5,378,619		5,373,590
Series 2022-1A, Class C, 30 day SOFR + 3.500% 8.017% FRN 4/01/24 (a)		1,700,000		1,699,993
Series 2022-3A, Class B, 30 day SOFR + 4.000% 8.517% FRN 11/01/24 (a)		1,000,000		1,000,568
Series 2022-1A, Class E, 30 day SOFR + 5.750% 10.267% FRN 4/01/24 (a)		800,000		799,995
Hilton Grand Vacations Trust
Series 2017-AA, Class B, 2.960% 12/26/28 (a)		105,174		103,602
Series 2022-2A, Class C, 5.570% 1/25/37 (a)		626,773		609,302
JP Morgan Mortgage Acquisition Trust, Series 2007-CH3, Class A5, 1 mo. USD LIBOR + .260%
5.105% FRN 3/25/37		162,768		155,372
KREF Ltd., Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200%
6.909% FRN 2/15/39 (a)		700,000		643,506
LCM Ltd., Series 19A, Class AR, 3 mo. USD LIBOR + 1.240%
6.032% FRN 7/15/27 (a)		179,273		179,215
Lendmark Funding Trust, Series 2019-2A, Class A
2.780% 4/20/28 (a)		3,693,920		3,609,179
New Residential Advance Receivables Trust Advance Receivables Backed
Series 2020-T1, Class AT1, ABS, 144A, 1.426% 8/15/53 (a)		2,250,000		2,215,406
Series 2020-T1, Class BT1, 1.823% 8/15/53 (a)		1,100,000		1,075,965
NP SPE II LP, Series 2019-1A, Class A1
2.574% 9/20/49 (a)		170,240		159,426

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

	Principal Amount		Value
Oportun Funding LLC, Series 2022-1, Class A
3.250% 6/15/29 (a)	$	1,048,788	$	1,032,684
Orange Lake Timeshare Trust, Series 2016-A, Class A
2.610% 3/08/29 (a)		52,328		50,261
Pagaya AI Debt Selection Trust
Series 2021-3, Class A, 1.150% 5/15/29 (a)		995,409		978,618
Series 2022-1, Class A, 2.030% 10/15/29 (a)		6,118,683		5,913,938
Sierra Timeshare Receivables Funding LLC
Series 2019-3A, Class C, 3.000% 8/20/36 (a)		670,521		634,769
Series 2019-2A, Class C, 3.120% 5/20/36 (a)		1,171,781		1,101,204
Series 2019-1A, Class C, 3.770% 1/20/36 (a)		154,403		147,605
Series 2019-3A, Class D, 4.180% 8/20/36 (a)		171,691		163,461
Series 2019-1A, Class D, 4.750% 1/20/36 (a)		139,698		132,755
Structured Asset Investment Loan Trust, Series 2005-2, Class M2, 1 mo. USD LIBOR + .735%
5.580% FRN 3/25/35		322,823		319,853
Structured Asset Securities Corp. Mortgage Loan Trust
Series 2006-BC6, Class A4, 1 mo. USD LIBOR + .170% 5.015% FRN 1/25/37		157,975		153,721
Series 2006-WF1, Class M4, 1 mo. USD LIBOR + .645% 5.490% FRN 2/25/36		203,327		202,659
Series 2006-GEL1, Class M2, 1 mo. USD LIBOR + 1.200% 6.045% FRN 11/25/35 (a)		438,481		425,674
Upstart Securitization Trust, Series 2021-4, Class A
0.840% 9/20/31 (a)		1,648,200		1,621,578
				43,707,788
Student Loans Asset-Backed Securities — 7.2%
Chase Education Loan Trust, Series 2007-A, Class A4, 3 mo. USD LIBOR + .100%
5.201% FRN 3/28/68		1,754,286		1,694,670
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
5.320% FRN 1/15/37		246,337		207,337
Commonbond Student Loan Trust
Series 2021-AGS, Class B, 1.400% 3/25/52 (a)		134,380		104,989
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		13,372		12,309
DRB Prime Student Loan Trust, Series 2017-A, Class A1, 1 mo. USD LIBOR + .850%
5.695% FRN 5/27/42 (a)		341,212		341,232
Edsouth Indenture No 10 LLC, No.10 LLC, Series 2015-2, Class B, 1 mo. USD LIBOR + 1.500%
6.345% FRN 12/25/58 (a)		1,000,000		999,849

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

	Principal Amount		Value
Edsouth Indenture No. 9 LLC, No.9 LLC, Series 2015-1, Class A, 1 mo. USD LIBOR + .800%
5.645% FRN 10/25/56 (a)	$	207,116	$	203,863
ELFI Graduate Loan Program LLC, Series 2018-A, Class A1, 1 mo. USD LIBOR + .750%
5.595% FRN 8/25/42 (a)		169,543		165,589
Goal Capital Funding Trust, Series 2010-1, Class A, 3 mo. USD LIBOR + .700%
5.658% FRN 8/25/48 (a)		97,470		94,787
JP Morgan Student Loan Trust, Series 2007-A, Class B, 3 mo. USD LIBOR + .350%
5.152% FRN 6/28/39 (a)		302,389		271,978
Laurel Road Prime Student Loan Trust, Series 2019-A, Class A1FX
2.340% 10/25/48 (a)		108,084		106,101
Navient Private Education Loan Trust, Series 2015-AA, Class A2B, 1 mo. USD LIBOR + 1.200%
5.884% FRN 12/15/28 (a)		35,983		35,966
Navient Private Education Refi Loan Trust
Series 2021-A, Class A, 0.840% 5/15/69 (a)		1,931,858		1,687,052
Series 2020-HA, Class A, 1.310% 1/15/69 (a)		349,679		320,965
Navient Student Loan Trust, Series 2017-1A, Class A3, 1 mo. USD LIBOR + 1.150%
5.995% FRN 7/26/66 (a)		330,370		325,927
Nelnet Private Education Loan Trust, Series 2016-A, Class A1A, 1 mo. USD LIBOR + 1.750%
6.595% FRN 12/26/40 (a)		2,004		2,004
Nelnet Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .200% 5.018% FRN 1/25/38		436,227		384,261
Series 2005-2, Class B, 3 mo. USD LIBOR + .170% 5.117% FRN 3/23/37		854,830		779,162
Series 2004-3, Class B, 3 mo. USD LIBOR + .350% 5.168% FRN 10/25/40		870,503		811,823
Series 2006-3, Class B, 3 mo. USD LIBOR + .250% 5.384% FRN 6/25/41		188,373		170,234
Series 2014-2A, Class B, 1 mo. USD LIBOR + 1.500% 6.345% FRN 6/25/41 (a)		375,000		371,036
SLC Student Loan Trust
Series 2006-2, Class B, 3 mo. USD LIBOR + .230% 5.096% FRN 12/15/39		735,928		661,389
Series 2005-2, Class B, 3 mo. USD LIBOR + .280% 5.146% FRN 3/15/40		1,113,277		1,027,242
SLM Student Loan Trust
Series 2005-5, Class A4, 3 mo. USD LIBOR + .140% 4.958% FRN 10/25/28		36,751		36,694
Series 2006-4, Class B, 3 mo. USD LIBOR + .200% 5.018% FRN 1/25/70		226,209		212,659
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.028% FRN 10/25/40		310,956		290,319
Series 2006-2, Class B, 3 mo. USD LIBOR + .220% 5.038% FRN 1/25/41		304,550		282,041
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 5.128% FRN 1/25/55		274,391		250,460

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

	Principal Amount		Value
Series 2004-8, Class B, 3 mo. USD LIBOR + .460% 5.278% FRN 1/25/40	$	281,990	$	255,188
Series 2004-3, Class B, 3 mo. USD LIBOR + .470% 5.288% FRN 10/25/64		182,973		173,475
Series 2003-11, Class B, 3 mo. USD LIBOR + .650% 5.516% FRN 12/15/38		262,681		249,906
SMB Private Education Loan Trust
Series 2018-B, Class A2B, 1 mo. USD LIBOR + .720% 5.404% FRN 1/15/37 (a)		650,339		634,934
Series 2019-A, Class A2B, 1 mo. USD LIBOR + .870% 5.554% FRN 7/15/36 (a)		827,663		816,537
Series 2014-A, Class A3, 1 mo. USD LIBOR + 1.500% 6.184% FRN 4/15/32 (a)		506,022		505,275
SoFi Alternative Trust, Series 2019-C, Class PT,
5.392% VRN 1/25/45 (a) (b)		576,418		540,448
SoFi Professional Loan Program LLC, Series 2017-A, Class A1, 1 mo. USD LIBOR + .700%
5.545% FRN 3/26/40 (a)		26,093		26,052
				15,053,753
Whole Loan Collateral Collateralized Mortgage Obligations — 12.1%
Angel Oak Mortgage Trust
Series 2020-6, Class A1, 1.261% VRN 5/25/65 (a) (b)		981,281		858,379
Series 2022-2, Class A1, 3.353% VRN 1/25/67 (a) (b)		2,003,183		1,838,364
CIM Trust, Series 2019-INV3, Class A11, 1 mo. USD LIBOR + 1.000%
5.500% FRN 8/25/49 (a)		833,706		775,695
COLT Mortgage Loan Trust, Series 2022-1, Class A1,
2.284% VRN 12/27/66 (a) (b)		6,576,048		5,736,797
Lakeview Trust
Series 2022-1, Class M3, 4.585% 4/25/52 (a)		700,000		660,599
Series 2022-3, Class M3, 5.437% 5/29/52 (a)		1,300,000		1,230,036
NewRez Warehouse Securitization Trust, Series 2021-1, Class A, 1 mo. USD LIBOR + .750%
5.595% FRN 5/25/55 (a)		4,044,733		3,989,516
Oceanview Trust
Series 2021-1, Class A, 1.219% 12/29/51 (a)		1,518,485		1,458,530
Series 2021-1, Class M3, 3.090% 12/29/51 (a)		2,000,000		1,876,102
Onslow Bay Financial LLC
Series 2021-NQM2, Class A2, 1.357% VRN 5/25/61 (a) (b)		1,333,034		1,020,342
Series 2020-EXP1, Class 2A2, 1 mo. USD LIBOR + .950% 5.795% FRN 2/25/60 (a)		363,377		337,577
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
7.695% FRN 2/25/25 (a)		440,000		439,606

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

	Principal Amount		Value
PSMC Trust, Series 2020-2, Class A2,
3.000% VRN 5/25/50 (a) (b)	$	722,253	$	646,319
Starwood Mortgage Residential Trust, Series 2019-INV1, Class A3,
2.916% VRN 9/27/49 (a) (b)		919,707		873,647
Starwood Residential Mortgage Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (b)		3,074,101		2,608,494
Verus Securitization Trust
Series 2021-3, Class A3, 1.437% VRN 6/25/66 (a) (b)		772,330		638,964
Series 2019-INV2, Class A3, 3.219% VRN 7/25/59 (a) (b)		304,176		292,305
				25,281,272
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $110,678,638)				105,907,567
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (c) — 10.6%
Pass-Through Securities — 0.1%
Federal Home Loan Mortgage Corp. Pool #1Q0239, 1 year CMT + 2.175% 4.377% 3/01/37		85,655		87,167
Whole Loans — 10.5%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes
Series 2021-DNA6, Class M1, 30 day SOFR + .800% 5.360% FRN 10/25/41 (a)		5,876,124		5,829,578
Series 2021-HQA3, Class M1, 30 day SOFR + .850% 5.410% FRN 9/25/41 (a)		6,477,282		6,249,233
Series 2021-DNA7, Class M1, 30 day SOFR + .850% 5.410% FRN 11/25/41 (a)		2,350,239		2,314,321
Series 2020-DNA1, Class M2, 1 mo. USD LIBOR + 1.700% 6.545% FRN 1/25/50 (a)		1,005,791		1,006,732
Series 2022-DNA3, Class M1A, 30 day SOFR + 2.000% 6.560% FRN 4/25/42 (a)		1,920,975		1,920,965
Series 2018-DNA3, Class M2A, 1 mo. USD LIBOR + 2.100% 6.945% FRN 9/25/48 (a)		629,836		633,012
Series 2020-DNA5, Class M2, 30 day SOFR + 2.800% 7.360% FRN 10/25/50 (a)		184,012		186,197
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes, REMICS, Series 2022-DNA5, Class M1A, 30 day SOFR + 2.950%
7.510% FRN 6/25/42 (a)		593,036		603,274
Federal National Mortgage Association Connecticut Avenue Securities Trust
Series 2019-R03, Class 1M2, 1 mo. USD LIBOR + 2.150% 6.995% FRN 9/25/31 (a)		471,480		471,926

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

	Principal Amount		Value
Series 2019-R02, Class 1M2, 1 mo. USD LIBOR + 2.300% 7.145% FRN 8/25/31 (a)	$	197,539	$	197,848
Series 2022-R07, Class 1M1, 30 day SOFR + 2.950% 7.518% FRN 6/25/42 (a)		2,542,056		2,584,159
				21,997,245
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $22,397,463)				22,084,412
U.S. TREASURY OBLIGATIONS — 25.0%
U.S. Treasury Bonds & Notes — 25.0%
U.S. Treasury Inflation Index
0.125% 2/15/52		1,020,709		707,917
U.S. Treasury Inflation Index
0.125% 10/15/25		1,901,972		1,843,674
0.125% 4/15/26		1,368,588		1,313,002
0.125% 7/15/26		1,684,503		1,622,091
0.125% 10/15/26		1,915,463		1,838,769
0.125% 4/15/27		2,118,620		2,017,282
0.125% 1/15/30		1,569,375		1,462,047
0.125% 7/15/30		2,216,445		2,061,575
0.125% 1/15/31		2,269,196		2,096,391
0.125% 7/15/31		2,120,267		1,951,847
0.125% 1/15/32		2,373,734		2,166,913
0.125% 2/15/51		746,727		516,926
0.250% 7/15/29		1,403,136		1,329,019
0.250% 2/15/50		698,016		505,816
0.375% 7/15/25 (d)		2,137,785		2,091,000
0.375% 1/15/27		1,795,361		1,730,525
0.375% 7/15/27		1,772,747		1,711,791
0.500% 1/15/28		1,818,825		1,755,877
0.625% 1/15/26		1,730,623		1,692,225
0.625% 7/15/32		2,470,584		2,358,539
0.625% 2/15/43		520,364		438,950
0.750% 7/15/28		1,459,399		1,430,568
0.750% 2/15/42		1,058,920		923,815
0.750% 2/15/45		1,212,984		1,032,150
0.875% 1/15/29		1,184,520		1,163,224
0.875% 2/15/47		867,321		749,877
1.000% 2/15/46		631,145		564,018
1.000% 2/15/48		606,445		538,996
1.000% 2/15/49		534,870		474,556

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

	Principal Amount		Value
1.125% 1/15/33	$	1,406,126	$	1,401,677
1.375% 2/15/44		1,219,173		1,180,538
1.500% 2/15/53		452,786		459,259
1.625% 10/15/27		2,120,307		2,160,684
1.750% 1/15/28		785,224		803,485
2.000% 1/15/26		904,164		917,091
2.125% 2/15/40		415,140		458,070
2.125% 2/15/41		614,601		677,874
2.375% 1/15/27		815,716		845,596
2.500% 1/15/29		835,848		894,578
3.375% 4/15/32		421,258		497,754
3.625% 4/15/28		832,149		928,204
3.875% 4/15/29		909,690		1,048,107
				52,362,297
TOTAL U.S. TREASURY OBLIGATIONS (Cost $55,420,885)				52,362,297
TOTAL BONDS & NOTES (Cost $188,496,986)				180,354,276
TOTAL LONG-TERM INVESTMENTS (Cost $188,496,986)				180,354,276
SHORT-TERM INVESTMENTS — 12.2%
Commercial Paper — 10.5%
Amcor Finance USA, Inc.
5.933% 4/24/23 (a)		1,000,000		996,365
Amcor Flexibles North America, Inc.
5.009% 4/06/23 (a)		1,000,000		999,148
BAT International Finance PLC
6.041% 5/22/23 (a)		3,000,000		2,976,557
Dollar General Corp.
5.827% 5/08/23 (a)		2,000,000		1,988,727
Fidelity National Information Services, Inc.
5.817% 4/11/23 (a)		3,000,000		2,995,296
Ingredion, Inc.
5.156% 4/06/23 (a)		2,000,000		1,998,303
Nutrien Ltd.
5.000% 4/04/23 (a)		3,000,000		2,998,297
Oracle Corp.
5.017% 4/14/23 (a)		3,000,000		2,994,511

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

	Principal Amount		Value
Suncor Energy, Inc.
5.186% 4/27/23 (a)	$	1,000,000	$	996,042
Tampa Electric Co.
5.704% 4/26/23 (a)		3,000,000		2,988,512
				21,931,758
Repurchase Agreement — 1.7%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (e)		3,520,700		3,520,700
TOTAL SHORT-TERM INVESTMENTS (Cost $25,451,471)				25,452,458
TOTAL INVESTMENTS — 98.5% (Cost $213,948,457) (f)				205,806,734
Other Assets/(Liabilities) — 1.5%				3,058,682
NET ASSETS — 100.0%			$	208,865,416

Abbreviation Legend

FRN Floating Rate Note

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At March 31, 2023, the aggregate market value of these securities amounted to $137,160,066 or 65.67% of net assets.

(b) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at March 31, 2023.

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

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

(e) Maturity value of $3,521,123. Collateralized by U.S. Government Agency obligations with a rate of 4.815%, maturity date of 10/31/24, and an aggregate market value, including accrued interest, of $3,591,201.

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

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

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Short
U.S. Treasury Long Bond	6/21/23		2	$	(248,494)	$	(13,819)
U.S. Treasury Ultra 10 Year	6/21/23		9		(1,053,111)		(37,155)
U.S. Treasury Note 2 Year	6/30/23		240		(49,000,488)		(548,262)
U.S. Treasury Note 5 Year	6/30/23		12		(1,282,447)		(31,647)
						$	(630,883)

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)
Fixed 2.460%	Maturity		U.S, Consumer Price Index		Maturity		3/23/25	USD	10,000,000	$	32,758	$	—	$	32,758
12-Month USD SOFR	Annually		Fixed 4.661%		Annually		5/08/25	USD	14,400,000		177,997		—		177,997
12-Month USD SOFR	Annually		Fixed 4.864%		Annually		6/13/25	USD	28,600,000		516,729		—		516,729
Fixed 3.905%	Annually		12-Month USD SOFR		Annually		5/08/33	USD	3,300,000		(198,424)		—		(198,424)
Fixed 3.646%	Annually		12-Month USD SOFR		Annually		6/13/33	USD	6,500,000		(259,491)		—		(259,491)
										$	269,569	$	—	$	269,569

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

OTC Total Return Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference	Frequency	Counterparty	Termination Date	No. of Contracts/ Notional		Value		Upfront Premium Received (Paid)/ Received		Unrealized Appreciation/ (Depreciation)
Fed Funds +12.5 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	7/31/23		30,058,617	$	444,331	$	—	$	444,331
Fed Funds +15.8 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	BNP Paribas SA	8/31/23		39,385,026		1,137,881		—		1,137,881
Fed Funds +9.0 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	7/31/23		37,922,097		560,570		—		560,570
Fed Funds +9.0 BP	Maturity	Bloomberg US Treasury Inflation Notes TR Index	Maturity	Goldman Sachs International	8/31/23		35,834,554		1,035,303		—		1,035,303
								$	3,178,085	$	—	$	3,178,085

Currency Legend

USD U.S. Dollar

MML iShares 60/40 Allocation Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
MUTUAL FUNDS — 99.9%
Diversified Financial Services — 99.9%
iShares 1-5 Year Investment Grade Corporate Bond ETF		28,989	$	1,465,104
iShares 20+ Year Treasury Bond ETF		5,598		595,459
iShares Broad USD High Yield Corporate Bond ETF		8,306		295,278
iShares Core Dividend Growth ETF		17,717		885,673
iShares Core International Aggregate Bond ETF		2,989		146,312
iShares Core MSCI Emerging Markets ETF		11,947		582,894
iShares Core MSCI International Developed Markets ETF		63,058		3,813,117
iShares Core S&P 500 ETF		6,480		2,663,798
iShares Core S&P Mid-Cap ETF		2,374		593,880
iShares Core S&P Total US Stock Market ETF		101,432		9,184,668
iShares Core U.S. Aggregate Bond ETF		92,716		9,238,222
TOTAL MUTUAL FUNDS (Cost $31,653,861)				29,464,405
TOTAL LONG-TERM INVESTMENTS (Cost $31,653,861)				29,464,405
TOTAL INVESTMENTS — 99.9% (Cost $31,653,861) (a)				29,464,405
Other Assets/(Liabilities) — 0.1%				26,661
NET ASSETS — 100.0%			$	29,491,066

Abbreviation Legend

ETF Exchange-Traded Fund

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

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

MML iShares 80/20 Allocation Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
MUTUAL FUNDS — 100.6%
Diversified Financial Services — 100.6%
iShares 1-5 Year Investment Grade Corporate Bond ETF (a)		43,706	$	2,208,901
iShares 20+ Year Treasury Bond ETF		4,199		446,648
iShares Broad USD High Yield Corporate Bond ETF		12,532		445,512
iShares Core Dividend Growth ETF		26,711		1,335,283
iShares Core International Aggregate Bond ETF		9,013		441,186
iShares Core MSCI Emerging Markets ETF		45,029		2,196,965
iShares Core MSCI International Developed Markets ETF (a)		109,696		6,633,317
iShares Core S&P 500 ETF		8,684		3,569,819
iShares Core S&P Mid-Cap ETF		7,159		1,790,895
iShares Core S&P Total US Stock Market ETF		221,987		20,100,923
iShares Core U.S. Aggregate Bond ETF		53,251		5,305,930
State Street Navigator Securities Lending Government Money Market Portfolio (b)		297,575		297,575
TOTAL MUTUAL FUNDS (Cost $47,044,269)				44,772,954
TOTAL LONG-TERM INVESTMENTS (Cost $47,044,269)				44,772,954
	Principal Amount
SHORT-TERM INVESTMENTS — 1.8%
Repurchase Agreement — 1.8%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (c)	$	801,558		801,558
TOTAL SHORT-TERM INVESTMENTS (Cost $801,558)				801,558
TOTAL INVESTMENTS — 102.4% (Cost $47,845,827) (d)				45,574,512
Other Assets/(Liabilities) — (2.4)%				(1,073,686)
NET ASSETS — 100.0%			$	44,500,826

Abbreviation Legend

ETF Exchange-Traded Fund

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 March 31, 2023, was $291,338 or 0.65% of net assets. This amount is not reflected on the Portfolio of Investments. (Note 2).

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

(c) Maturity value of $801,654. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $817,675.

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

MML Managed Bond Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 98.6%
CORPORATE DEBT — 37.9%
Aerospace & Defense — 0.2%
The Boeing Co.
5.930% 5/01/60	$	605,000	$	602,170
Raytheon Technologies Corp.
5.375% 2/27/53		833,000		873,628
				1,475,798
Agriculture — 0.8%
BAT Capital Corp.
2.259% 3/25/28		725,000		618,841
3.462% 9/06/29		1,075,000		949,319
4.758% 9/06/49		540,000		412,825
Imperial Brands Finance PLC
3.875% 7/26/29 (a)		1,739,000		1,560,819
6.125% 7/27/27 (a)		750,000		768,338
Reynolds American, Inc.
5.850% 8/15/45		985,000		886,768
Viterra Finance BV
3.200% 4/21/31 (a)		1,315,000		1,037,417
				6,234,327
Airlines — 0.2%
Spirit Airlines Pass-Through Trust, Series 2015-1, Class A,
4.100% 10/01/29		1,195,520		1,111,450
United Airlines Pass-Through Trust, Series 2018-1, Class B,
4.600% 9/01/27		330,574		312,156
				1,423,606
Auto Manufacturers — 0.4%
General Motors Co.
5.150% 4/01/38		800,000		719,869
General Motors Financial Co., Inc.
3.100% 1/12/32		1,750,000		1,424,811
Nissan Motor Co. Ltd.
4.345% 9/17/27 (a)		611,000		574,019
				2,718,699
Auto Parts & Equipment — 0.1%
Lear Corp.
3.550% 1/15/52		1,325,000		866,707
Banks — 8.2%
AIB Group PLC SOFR + 3.456%
7.583% VRN 10/14/26 (a)		406,000		416,152

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Bank Hapoalim BM 5 year CMT + 2.155%
3.255% VRN 1/21/32 (a)	$	2,600,000	$	2,162,680
Bank of America Corp.
SOFR + 1.220% 2.299% VRN 7/21/32		1,355,000		1,091,553
5 year CMT + 1.200% 2.482% VRN 9/21/36		2,635,000		1,986,445
5 year CMT + 2.000% 3.846% VRN 3/08/37		2,145,000		1,827,495
3 mo. USD LIBOR + 1.814% 4.244% VRN 4/24/38		1,150,000		1,027,756
6.110% 1/29/37		1,550,000		1,629,457
7.750% 5/14/38		400,000		478,453
The Bank of Nova Scotia 3 mo. USD LIBOR + 2.648%
7.454% VRN (b)		3,575,000		3,187,470
Barclays PLC
4.337% 1/10/28		920,000		875,300
5.200% 5/12/26		1,320,000		1,262,472
5 year CMT + 5.431% 8.000% VRN (b)		1,382,000		1,179,882
BPCE SA SOFR + 1.730%
3.116% VRN 10/19/32 (a)		1,860,000		1,392,545
Citigroup, Inc.
6.625% 6/15/32		1,525,000		1,633,531
3 mo. USD LIBOR + 4.068% 8.870% VRN 12/31/99 (b)		890,000		884,437
Credit Suisse AG
7.950% 1/09/25		1,900,000		1,931,369
Credit Suisse Group AG
SOFR + .980% 1.305% VRN 2/02/27 (a)		2,500,000		2,104,350
SOFR + 3.340% 6.373% VRN 7/15/26 (a)		892,000		862,024
6.500% 8/08/23 (a)		1,630,000		1,552,575
Deutsche Bank AG SOFR + 1.318%
2.552% VRN 1/07/28		1,290,000		1,094,128
Discover Bank 5 year USD Swap + 1.730%
4.682% VRN 8/09/28		3,105,000		2,841,659
First Republic Bank
4.375% 8/01/46		1,700,000		918,000
The Goldman Sachs Group, Inc.
SOFR + 1.410% 3.102% VRN 2/24/33		1,500,000		1,283,791
6.750% 10/01/37		1,795,000		1,939,056
HSBC Holdings PLC
SOFR + 1.290% 1.589% VRN 5/24/27		699,000		615,542
SOFR + 1.285% 2.206% VRN 8/17/29		1,203,000		1,007,824
SOFR + 1.970% 6.161% VRN 3/09/29		1,840,000		1,889,285
SOFR + 3.350% 7.390% VRN 11/03/28		2,225,000		2,366,232
JP Morgan Chase & Co.
SOFR + 2.515% 2.956% VRN 5/13/31		1,000,000		863,904
5.600% 7/15/41		1,125,000		1,167,970
Lloyds Banking Group PLC 1 year CMT + 3.750%
7.953% VRN 11/15/33		1,030,000		1,138,586
Macquarie Bank Ltd. 5 year CMT + 1.700%
3.052% VRN 3/03/36 (a)		2,665,000		2,030,404
Macquarie Group Ltd. SOFR + 1.069%
1.340% VRN 1/12/27 (a)		950,000		846,979
Mitsubishi UFJ Financial Group, Inc. 1 year CMT + 1.380%
5.422% VRN 2/22/29		554,000		558,705
Mizrahi Tefahot Bank Ltd. 5 year CMT + 2.250%
3.077% VRN 4/07/31 (a)		2,780,000		2,356,050
Morgan Stanley
SOFR + 1.360% 2.484% VRN 9/16/36		1,270,000		964,154
SOFR + 2.620% 5.297% VRN 4/20/37		2,320,000		2,184,787
National Australia Bank Ltd. 5 year CMT + 1.700%
3.347% VRN 1/12/37 (a)		2,960,000		2,389,146

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Natwest Group PLC 1 year CMT + 1.350%
5.847% VRN 3/02/27	$	622,000	$	623,128
SVB Financial Group 5 year CMT + 3.074%
4.250% VRN (b)		298,000		19,370
Synovus Bank GA
5.625% 2/15/28		1,563,000		1,401,587
Toronto-Dominion Bank 5 year CMT + 4.075%
8.125% VRN 10/31/82		1,706,000		1,731,590
UBS Group AG 1 year CMT + 1.750%
4.751% VRN 5/12/28 (a)		1,575,000		1,502,473
				61,220,296
Beverages — 0.6%
Anheuser-Busch Cos. LLC/Anheuser-Busch InBev Worldwide, Inc.
4.900% 2/01/46		2,050,000		2,000,000
Bacardi Ltd.
5.150% 5/15/38 (a)		450,000		435,374
Molson Coors Beverage Co.
4.200% 7/15/46		1,859,000		1,524,327
5.000% 5/01/42		360,000		339,417
				4,299,118
Biotechnology — 0.1%
Amgen, Inc.
5.600% 3/02/43		982,000		1,008,658
Chemicals — 0.8%
Celanese US Holdings LLC
6.050% 3/15/25		925,000		928,922
6.165% 7/15/27		975,000		983,995
LYB International Finance III LLC
4.200% 5/01/50		1,475,000		1,150,991
Syngenta Finance NV
4.441% 4/24/23 (a)		1,183,000		1,181,582
Yara International ASA
3.800% 6/06/26 (a)		1,850,000		1,738,682
				5,984,172
Computers — 0.2%
Dell International LLC / EMC Corp.
8.100% 7/15/36		325,000		377,389
Leidos, Inc.
2.300% 2/15/31		1,260,000		1,021,732
5.750% 3/15/33		421,000		429,986
				1,829,107
Diversified Financial Services — 3.1%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
3.300% 1/30/32		4,115,000		3,412,422
Antares Holdings LP
2.750% 1/15/27 (a)		1,275,000		1,037,734
3.950% 7/15/26 (a)		2,555,000		2,214,756
6.000% 8/15/23 (a)		1,330,000		1,323,934
8.500% 5/18/25 (a)		720,000		728,413
Ares Finance Co. III LLC 5 year CMT + 3.237%
4.125% VRN 6/30/51 (a)		1,585,000		1,235,662

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Ares Finance Co. LLC
4.000% 10/08/24 (a)	$	2,080,000	$	1,999,616
Avolon Holdings Funding Ltd.
2.528% 11/18/27 (a)		2,755,000		2,330,574
3.250% 2/15/27 (a)		1,610,000		1,430,367
4.250% 4/15/26 (a)		2,976,000		2,796,067
5.500% 1/15/26 (a)		190,000		185,885
Blue Owl Finance LLC
3.125% 6/10/31 (a)		3,120,000		2,325,502
4.125% 10/07/51 (a)		1,675,000		1,029,578
Global Aircraft Leasing Co. Ltd.
6.500% 9/15/24 (a)		1,502,197		1,355,493
				23,406,003
Electric — 1.3%
AEP Transmission Co. LLC
5.400% 3/15/53		617,000		639,262
American Electric Power Co., Inc.
5.625% 3/01/33		820,000		849,658
CMS Energy Corp.
4.875% 3/01/44		780,000		715,921
Duke Energy Corp.
3.750% 9/01/46		1,500,000		1,160,925
Idaho Power Co.
5.500% 3/15/53		394,000		407,581
Indiana Michigan Power Co.
5.625% 4/01/53		303,000		314,580
Metropolitan Edison Co.
5.200% 4/01/28 (a)		514,000		518,789
NextEra Energy Capital Holdings, Inc. 5 year CMT + 2.547%
3.800% VRN 3/15/82		1,250,000		1,027,875
Pacific Gas and Electric Co.
2.500% 2/01/31		775,000		627,456
PG&E Wildfire Recovery Funding LLC
4.674% 12/01/53		1,200,000		1,126,709
Puget Energy, Inc.
2.379% 6/15/28		840,000		739,272
Vistra Operations Co. LLC
5.125% 5/13/25 (a)		1,550,000		1,510,515
				9,638,543
Electronics — 0.3%
Trimble, Inc.
6.100% 3/15/33		1,863,000		1,879,407
Entertainment — 0.3%
Warnermedia Holdings, Inc.
4.279% 3/15/32 (a)		2,060,000		1,836,136
Food — 0.9%
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
3.625% 1/15/32 (a)		5,300,000		4,393,541
Smithfield Foods, Inc.
2.625% 9/13/31 (a)		1,730,000		1,306,407
3.000% 10/15/30 (a)		943,000		751,941
				6,451,889

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Gas — 0.4%
CenterPoint Energy Resources Corp.
6.625% 11/01/37	$	1,250,000	$	1,332,573
NiSource, Inc.
4.800% 2/15/44		1,035,000		953,566
5.800% 2/01/42		950,000		932,629
				3,218,768
Hand & Machine Tools — 0.1%
Regal Rexnord Corp.
6.050% 4/15/28 (a)		935,000		934,918
Health Care – Services — 0.1%
City of Hope
4.378% 8/15/48		1,050,000		906,158
Insurance — 6.0%
Allianz SE 5 year CMT + 2.973%
3.500% VRN (a) (b)		4,200,000		3,365,916
Allstate Corp. 3 mo. USD LIBOR + 2.938%
5.750% VRN 8/15/53		2,885,000		2,809,350
American International Group, Inc. 3 mo. USD LIBOR + 2.868%
5.750% VRN 4/01/48		843,000		773,284
AmTrust Financial Services, Inc.
6.125% 8/15/23		3,370,000		3,314,548
Ascot Group Ltd.
4.250% 12/15/30 (a)		1,990,000		1,572,804
Athene Global Funding
2.673% 6/07/31 (a)		2,505,000		1,992,827
AXIS Specialty Finance LLC 5 year CMT + 3.186%
4.900% VRN 1/15/40		1,315,000		1,061,007
Brighthouse Financial, Inc.
4.700% 6/22/47		1,125,000		820,421
Brown & Brown, Inc.
4.200% 3/17/32		1,221,000		1,097,930
Corebridge Financial, Inc. 5 year CMT + 3.846%
6.875% VRN 12/15/52 (a)		3,281,000		2,916,843
Enstar Finance LLC 5 year CMT + 5.468%
5.750% VRN 9/01/40		2,200,000		1,880,582
Enstar Group Ltd.
3.100% 9/01/31		1,016,000		784,156
4.950% 6/01/29		1,274,000		1,195,208
Fairfax Financial Holdings Ltd.
5.625% 8/16/32 (a)		680,000		668,088
Global Atlantic Fin Co.
3.125% 6/15/31 (a)		4,487,000		3,531,811
5 year CMT + 3.796% 4.700% VRN 10/15/51 (a)		3,060,000		2,452,463
Hanwha Life Insurance Co. Ltd. 5 year CMT + 1.850%
3.379% VRN 2/04/32 (a)		2,485,000		2,202,400
Hill City Funding Trust
4.046% 8/15/41 (a)		5,150,000		3,603,103
Jackson Financial, Inc.
3.125% 11/23/31		1,024,000		843,291
Liberty Mutual Group, Inc. 5 year CMT + 3.315%
4.125% VRN 12/15/51 (a)		1,220,000		978,342
MetLife Capital Trust IV
7.875% 12/15/67 (a)		725,000		757,482

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Prudential Financial, Inc. 3 mo. USD LIBOR + 3.920%
5.625% VRN 6/15/43	$	1,025,000	$	1,006,522
Sammons Financial Group, Inc.
3.350% 4/16/31 (a)		3,805,000		2,996,146
4.450% 5/12/27 (a)		270,000		255,110
4.750% 4/08/32 (a)		805,000		691,725
USF&G Capital I
8.500% 12/15/45 (a)		885,000		1,007,691
				44,579,050
Internet — 0.2%
Expedia Group, Inc.
4.625% 8/01/27		1,330,000		1,302,433
Investment Companies — 1.1%
Ares Capital Corp.
2.150% 7/15/26		1,850,000		1,576,971
BlackRock TCP Capital Corp.
3.900% 8/23/24		1,316,000		1,267,652
Blackstone Private Credit Fund
1.750% 9/15/24		335,000		309,396
2.625% 12/15/26		3,425,000		2,874,711
Golub Capital BDC, Inc.
2.500% 8/24/26		880,000		753,673
OWL Rock Core Income Corp.
4.700% 2/08/27		1,945,000		1,755,761
				8,538,164
Lodging — 0.3%
Las Vegas Sands Corp.
3.200% 8/08/24		2,070,000		2,005,825
Media — 1.0%
CCO Holdings LLC/CCO Holdings Capital Corp.
5.125% 5/01/27 (a)		2,000,000		1,890,000
Charter Communications Operating LLC/Charter Communications Operating Capital
3.900% 6/01/52		765,000		503,960
6.484% 10/23/45		1,485,000		1,405,020
Comcast Corp.
2.887% 11/01/51		350,000		237,930
2.937% 11/01/56		1,184,000		784,048
3.969% 11/01/47		630,000		529,613
Discovery Communications LLC
4.000% 9/15/55		1,210,000		799,613
4.650% 5/15/50		490,000		373,592
Time Warner Cable, Inc.
6.750% 6/15/39		985,000		969,016
				7,492,792
Mining — 0.1%
Teck Resources Ltd.
6.000% 8/15/40		808,000		815,498
Oil & Gas — 2.2%
BP Capital Markets PLC
5 year CMT + 4.036% 4.375% VRN (b)		2,400,000		2,285,770
5 year CMT + 4.398% 4.875% VRN (b)		1,475,000		1,340,406

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
EQT Corp.
3.900% 10/01/27	$	2,160,000	$	2,030,227
7.000% STEP 2/01/30		1,795,000		1,878,791
Occidental Petroleum Corp.
6.600% 3/15/46		1,258,000		1,322,642
Ovintiv, Inc.
6.500% 8/15/34		1,050,000		1,060,837
6.500% 2/01/38		545,000		542,860
Patterson-UTI Energy, Inc.
3.950% 2/01/28 (c)		2,435,000		2,160,075
5.150% 11/15/29 (c)		1,225,000		1,111,255
Petroleos Mexicanos
5.350% 2/12/28		665,000		563,544
6.375% 1/23/45 (c)		595,000		375,676
6.500% 3/13/27		585,000		530,866
6.625% 6/15/35		140,000		102,117
Santos Finance Ltd.
3.649% 4/29/31 (a)		1,490,000		1,246,477
				16,551,543
Oil & Gas Services — 0.3%
NOV, Inc.
3.600% 12/01/29		1,573,000		1,420,919
3.950% 12/01/42		1,506,000		1,111,121
				2,532,040
Pharmaceuticals — 1.0%
AbbVie, Inc.
4.700% 5/14/45		860,000		804,640
The Cigna Corp.
4.800% 7/15/46		880,000		808,110
CVS Health Corp.
5.050% 3/25/48		455,000		424,400
6.125% 9/15/39		560,000		590,164
CVS Pass-Through Trust
5.926% 1/10/34 (a)		909,505		907,707
7.507% 1/10/32 (a)		753,710		811,575
Utah Acquisition Sub, Inc.
3.950% 6/15/26		1,000,000		951,115
5.250% 6/15/46		2,325,000		1,845,764
				7,143,475
Pipelines — 1.7%
Energy Transfer LP
6.125% 12/15/45		1,000,000		965,563
3 mo. USD LIBOR + 4.028% 8.892% VRN (b) (c)		2,370,000		2,107,942
EnLink Midstream Partners LP
4.850% 7/15/26		951,000		915,338
Enterprise Products Operating LLC 3 mo. USD LIBOR + 3.033%
5.250% VRN 8/16/77		2,475,000		2,092,920
Plains All American Pipeline LP 3 mo. USD LIBOR + 4.110%
8.974% VRN (b)		2,345,000		2,075,746
Plains All American Pipeline LP/PAA Finance Corp.
4.700% 6/15/44		1,195,000		937,358
6.650% 1/15/37		375,000		382,433

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Targa Resources Partners LP/Targa Resources Partners Finance Corp.
4.875% 2/01/31	$	930,000	$	871,426
6.875% 1/15/29		2,020,000		2,056,793
				12,405,519
Private Equity — 0.9%
Apollo Management Holdings LP 5 year CMT + 3.266%
4.950% VRN 1/14/50 (a)		1,505,000		1,235,927
Hercules Capital, Inc.
2.625% 9/16/26		3,284,000		2,776,026
3.375% 1/20/27		1,745,000		1,496,320
KKR Group Finance Co. VIII LLC
3.500% 8/25/50 (a)		710,000		477,088
KKR Group Finance Co. X LLC
3.250% 12/15/51 (a)		1,035,000		649,377
				6,634,738
Real Estate Investment Trusts (REITS) — 2.6%
Broadstone Net Lease LLC
2.600% 9/15/31		1,835,000		1,329,600
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		2,625,000		2,075,429
Host Hotels & Resorts LP
2.900% 12/15/31		580,000		452,152
3.500% 9/15/30		2,120,000		1,788,888
Invitation Homes Operating Partnership LP
4.150% 4/15/32		505,000		452,498
Kimco Realty OP LLC
4.125% 12/01/46		710,000		537,774
4.450% 9/01/47		800,000		632,002
Omega Healthcare Investors, Inc.
3.375% 2/01/31		1,625,000		1,282,615
Piedmont Operating Partnership LP
2.750% 4/01/32		1,035,000		710,220
Rexford Industrial Realty LP
2.125% 12/01/30		1,137,000		911,573
Service Properties Trust
4.950% 10/01/29		1,155,000		885,100
Spirit Realty LP
2.700% 2/15/32		550,000		430,069
3.200% 1/15/27		2,280,000		2,079,475
3.400% 1/15/30		515,000		440,401
4.000% 7/15/29		1,290,000		1,154,346
STORE Capital Corp.
4.500% 3/15/28		2,075,000		1,838,857
WEA Finance LLC
2.875% 1/15/27 (a)		2,420,000		2,084,735
				19,085,734
Retail — 0.1%
Advance Auto Parts, Inc.
5.950% 3/09/28		999,000		1,029,421
Software — 0.4%
Electronic Arts, Inc.
2.950% 2/15/51		1,100,000		752,577

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount			Value
Microsoft Corp.
2.921% 3/17/52	$	2,064,000		$	1,563,069
Oracle Corp.
5.550% 2/06/53		190,000			180,287
6.900% 11/09/52		712,000			794,595
			��		3,290,528
Telecommunications — 1.8%
AT&T, Inc.
3.550% 9/15/55		5,153,000			3,684,467
British Telecommunications PLC
9.625% STEP 12/15/30		2,155,000			2,685,366
Crown Castle Towers LLC
4.241% 7/15/48 (a)		2,750,000			2,598,308
Deutsche Telekom International Finance BV
8.750% STEP 6/15/30		635,000			775,686
Sprint Capital Corp.
8.750% 3/15/32		3,250,000			3,961,750
					13,705,577
Toys, Games & Hobbies — 0.1%
Hasbro, Inc.
3.900% 11/19/29		1,075,000			977,516
TOTAL CORPORATE DEBT (Cost $322,604,588)					283,422,163
MUNICIPAL OBLIGATIONS — 0.3%
Louisiana Local Government Environmental Facilities & Community Development Authority, Revenue Bond
4.475% 8/01/39		2,200,000			2,102,289
TOTAL MUNICIPAL OBLIGATIONS (Cost $2,200,000)					2,102,289
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 27.8%
Automobile Asset-Backed Securities — 0.5%
Santander Revolving Auto Loan Trust, Series 2019-A, Class D
3.450% 1/26/32 (a)		1,087,000			991,485
Westlake Automobile Receivables Trust, Series 2021-1A, Class E
2.330% 8/17/26 (a)		3,226,000			2,979,181
					3,970,666
Commercial Mortgage-Backed Securities — 8.2%
BANK, Series 2020-BN30, Class MCDF,
2.918% VRN 12/15/53 (d)		2,100,000			1,159,310
BBCMS Mortgage Trust
Series 2018-CHRS, Class B, 4.267% VRN 8/05/38 (a) (d)		2,250,000			1,781,163
Series 2018-CHRS, Class C, 4.267% VRN 8/05/38 (a) (d)		1,610,000			1,210,926
Series 2018-CHRS, Class D, 4.267% VRN 8/05/38 (a) (d)		1,370,000			980,723
Benchmark Mortgage Trust
Series 2021-B23, Class 360A, 2.760% VRN 2/15/54 (a) (d)		2,200,000			1,535,574
Series 2021-B23, Class 360B, 2.760% VRN 2/15/54 (a) (d)		3,587,000			2,232,775
Series 2021-B25, Class 300C, 2.994% VRN 4/15/54 (a) (d)		2,500,000			1,630,919
BGME Trust
Series 2021-VR, Class C, 2.995% VRN 1/10/43 (a) (d)		12,518,000			9,835,322
Series 2021-VR, Class D, 2.995% VRN 1/10/43 (a) (d)		2,800,000			2,078,082

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
BMO Mortgage Trust, Series 2023-C4, Class A5,
5.117% VRN 2/15/56 (d)	$	1,400,000	$	1,384,467
BX Commercial Mortgage Trust
Series 2021-SOAR, Class E, 1 mo. USD LIBOR + 1.800% 6.485% FRN 6/15/38 (a)		1,869,860		1,743,637
Series 2021-VOLT, Class E, 1 mo. USD LIBOR + 2.000% 6.684% FRN 9/15/36 (a)		4,999,000		4,648,257
Series 2019-XL, Class E, 1 mo. USD Term SOFR + 1.914% 6.742% FRN 10/15/36 (a)		1,469,650		1,427,460
BX Trust, Series 2023-LIFE, Class C
5.884% 2/15/28 (a)		1,100,000		1,042,254
COLEM Mortgage Trust, Series 2022-HLNE,
2.461% VRN 4/12/42 (a) (d)		1,600,000		1,204,651
Commercial Mortgage Pass-Through Certificates
Series 2012-CR4, Class B, 3.703% 10/15/45 (a)		1,060,000		650,927
Series 2014-UBS2, Class AM, 4.199% 3/10/47		1,375,000		1,338,827
Series 2015-CR23, Class C, 4.295% VRN 5/10/48 (d)		1,000,000		924,900
Series 2014-LC17, Class C, 4.543% VRN 10/10/47 (d)		2,908,000		2,689,340
Credit Suisse Mortgage Capital Certificates, Series 2019-ICE4, Class E, 1 mo. USD LIBOR + 2.150%
6.834% FRN 5/15/36 (a)		568,585		547,482
DROP Mortgage Trust
Series 2021-FILE, Class C, 1 mo. USD LIBOR + 2.250% 6.930% FRN 10/15/43 (a)		2,629,000		2,248,199
Series 2021-FILE, Class D, 1 mo. USD LIBOR + 2.750% 7.430% FRN 10/15/43 (a)		908,000		778,034
Extended Stay America Trust, Series 2021-ESH, Class D, 1 mo. USD LIBOR + 2.250%
6.935% FRN 7/15/38 (a)		1,952,384		1,859,633
JP Morgan Chase Commercial Mortgage Securities Trust, Series 2022-OPO, Class C,
3.450% VRN 1/05/39 (a) (d)		2,500,000		1,964,316
KIND Trust, Series 2021-KIND, Class C, 1 mo. USD Term SOFR + 1.864%
6.692% FRN 8/15/38 (a)		2,581,344		2,433,958
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
6.484% FRN 5/15/36 (a)		1,505,000		1,465,993
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
6.692% FRN 3/15/38 (a)		1,902,047		1,773,669
MFT Trust
Series 2020-ABC, Class A, 3.358% 2/10/42 (a)		919,000		664,814
Series 2020-ABC, Class B, 3.477% VRN 2/10/42 (a) (d)		2,253,000		1,558,525
MHC Commercial Mortgage Trust, Series 2021-MHC, Class D, 1 mo. USD LIBOR + 1.601%
6.285% FRN 4/15/38 (a)		1,600,000		1,516,000
MKT Mortgage Trust
Series 2020-525M, Class D, 2.941% VRN 2/12/40 (a) (d)		475,000		295,238
Series 2020-525M, Class E, 2.941% VRN 2/12/40 (a) (d)		976,000		550,176
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
6.784% FRN 7/15/39 (a)		3,761,000		3,313,824
Wells Fargo Commercial Mortgage Trust, Series 2018-C45, Class B
4.556% 6/16/51		400,000		347,412
				60,816,787

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Other Asset-Backed Securities — 13.5%
522 Funding CLO Ltd., Series 2018-3A, Class CR, 3 mo. USD LIBOR + 2.050%
6.858% FRN 10/20/31 (a)	$	950,000	$	892,071
AASET Trust
Series 2020-1A, Class A, 3.351% 1/16/40 (a)		794,257		667,386
Series 2021-2A, Class B, 3.538% 1/15/47 (a)		919,564		692,000
Adams Outdoor Advertising LP, Series 2018-1, Class A
4.810% 11/15/48 (a)		1,702,422		1,624,156
Anchorage Capital CLO Ltd., Series 2021-19A, Class A, 3 mo. USD LIBOR + 1.210%
6.002% FRN 10/15/34 (a)		2,000,000		1,949,146
Apidos CLO XLIV Ltd., Series 2023-44A, Class B, 3 mo. TSFR + 2.550%
1.000% FRN 4/26/35 (a) (e) (f)		1,750,000		1,750,000
Atrium XV, Series 15A, Class B, 3 mo. USD LIBOR + 1.750%
6.565% FRN 1/23/31 (a)		1,190,000		1,166,170
Bain Capital Credit CLO Ltd., Series 2022-1A, Class A1, 3 mo. TSFR + 1.320%
5.952% FRN 4/18/35 (a)		750,000		731,898
Ballyrock CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 3.150%
8.065% FRN 11/20/30 (a)		400,000		378,991
BRE Grand Islander Timeshare Issuer LLC, Series 2017-1A, Class A
2.940% 5/25/29 (a)		215,227		209,403
Business Jet Securities LLC
Series 2020-1A, Class A, 2.981% 11/15/35 (a)		236,957		224,612
Series 2021-1A, Class C, 5.067% 4/15/36 (a)		649,889		599,847
Canyon Capital CLO Ltd., Series 2019-2A, Class CR, 3 mo. USD LIBOR + 2.150%
6.942% FRN 10/15/34 (a)		700,000		654,116
Capital Automotive REIT
Series 2020-1A, Class A3, 3.250% 2/15/50 (a)		454,899		389,281
Series 2020-1A, Class A6, 3.810% 2/15/50 (a)		394,435		340,933
Castlelake Aircraft Securitization Trust, Series 2019-1A, Class A
3.967% 4/15/39 (a)		388,625		345,364
CBAM Ltd., Series 2018-6A, Class B1R, 3 mo. TSFR + 2.362%
7.019% FRN 1/15/31 (a)		900,000		880,227
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
5.788% FRN 4/20/31 (a)		750,000		741,990
Diameter Capital CLO Ltd., Series 2021-2A, Class A1, 3 mo. USD LIBOR + 1.220%
6.012% FRN 10/15/36 (a)		2,000,000		1,939,888
Eaton Vance CLO Ltd.
Series 2020-2A, Class BR, 3 mo. USD LIBOR + 1.700% 6.492% FRN 1/15/35 (a)		1,400,000		1,361,227
Series 2018-1A, Class B, 3 mo. USD LIBOR + 1.750% 6.542% FRN 10/15/30 (a)		1,700,000		1,653,950
Series 2020-1A, Class CR, 3 mo. USD LIBOR + 2.050% 6.842% FRN 10/15/34 (a)		350,000		332,864
Elmwood CLO II Ltd., Series 2019-2A, Class AR, 3 mo. USD LIBOR + 1.150%
5.958% FRN 4/20/34 (a)		2,800,000		2,736,866
Elmwood CLO III Ltd., Series 2019-3A, Class BR, 3 mo. USD LIBOR + 1.650%
6.458% FRN 10/20/34 (a)		350,000		340,192
FCI Funding LLC, Series 2019-1A, Class A
3.630% 2/18/31 (a)		9,422		9,411

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Flexential Issuer
Series 2021-1A, Class B, 3.720% 11/27/51 (a)	$	4,000,000	$	3,456,182
Series 2021-1A, Class C, 6.930% 11/27/51 (a)		4,000,000		3,403,596
Goldentree Loan Management US CLO Ltd., Series 2019-5A, Class CR, 3 mo. USD LIBOR + 2.050%
6.858% FRN 10/20/32 (a)		1,000,000		948,616
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		1,649,073		1,368,487
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		909,915		840,649
Series 2017-1A, Class A, 3.740% 10/15/52 (a)		437,518		404,826
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		738,519		676,259
Gulf Stream Meridian 6 Ltd., Series 2021-6A, Class A2, 3 mo. USD LIBOR + 1.750%
6.542% FRN 1/15/37 (a)		500,000		480,793
Harbor Park CLO Ltd., Series 2018-1A, Class B1, 3 mo. USD LIBOR + 1.700%
6.508% FRN 1/20/31 (a)		1,290,000		1,255,394
Hero Funding Trust
Series 2016-3A, Class A1, 3.080% 9/20/42 (a)		388,517		358,859
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		437,526		401,806
Series 2017-2A, Class A1, 3.280% 9/20/48 (a)		125,512		115,782
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		498,725		468,529
Series 2017-2A, Class A2, 4.070% 9/20/48 (a)		100,902		95,376
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		769,555		737,908
Horizon Aircraft Finance I Ltd., Series 2018-1, Class A
4.458% 12/15/38 (a)		834,304		725,317
Horizon Aircraft Finance II Ltd, Series 2019-1, Class A
3.721% 7/15/39 (a)		1,068,552		920,718
Horizon Aircraft Finance III Ltd., Series 2019-2, Class A
3.425% 11/15/39 (a)		2,637,358		2,136,239
KKR CLO Ltd.
Series 28A, Class A, 3 mo. USD LIBOR + 1.140% 6.006% FRN 3/15/31 (a)		900,000		889,544
Series 36A, Class C, 3 mo. USD LIBOR + 2.150% 6.942% FRN 10/15/34 (a)		500,000		466,128
KREF Ltd.
Series 2021-FL2, Class B, 1 mo. USD LIBOR + 1.650% 6.359% FRN 2/15/39 (a)		2,900,000		2,727,087
Series 2021-FL2, Class C, 1 mo. USD LIBOR + 2.000% 6.709% FRN 2/15/39 (a)		5,000,000		4,616,739
Series 2021-FL2, Class D, 1 mo. USD LIBOR + 2.200% 6.909% FRN 2/15/39 (a)		4,100,000		3,769,109
Labrador Aviation Finance Ltd., Series 2016-1A, Class A1
4.300% 1/15/42 (a)		1,774,991		1,446,047
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		1,498,527		1,257,878
Madison Park Funding Ltd.
Series 2018-28A, Class B, 3 mo. USD LIBOR + 1.600% 6.392% FRN 7/15/30 (a)		1,665,000		1,624,915
Series 2018-32A, Class CR, 3 mo. USD LIBOR + 2.000% 6.815% FRN 1/22/31 (a)		1,000,000		945,592
Series 2018-29A, Class C, 3 mo. USD LIBOR + 2.200% 6.995% FRN 10/18/30 (a)		620,000		597,911
Mariner Finance Issuance Trust
Series 2021-AA, Class B, 2.330% 3/20/36 (a)		1,336,000		1,105,983
Series 2021-AA, Class C, 2.960% 3/20/36 (a)		637,000		526,473
Mosaic Solar Loans LLC
Series 2018-1A, Class A, 4.010% 6/22/43 (a)		165,898		151,641	��
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		154,146		148,020

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Neuberger Berman CLO Ltd., Series 2015-20A, Class BRR, 3 mo. USD LIBOR + 1.650%
6.442% FRN 7/15/34 (a)	$	1,800,000	$	1,744,043
Neuberger Berman Loan Advisers CLO Ltd., Series 2015-45A, Class B, 3 mo. USD LIBOR + 1.650%
6.442% FRN 10/14/35 (a)		1,350,000		1,308,477
NP SPE LLC, Series 2017-1A, Class A2
4.219% 10/21/47 (a)		2,260,000		2,093,925
Oak Street Investment Grade Net Lease Fund, Series 2020-1A, Class A5
3.390% 11/20/50 (a)		1,200,000		985,512
OCP CLO Ltd., Series 2018-15A, Class A1, 3 mo. USD LIBOR + 1.100%
5.908% FRN 7/20/31 (a)		250,000		247,061
Oxford Finance Funding Trust, Series 2020-1A, Class A2
3.101% 2/15/28 (a)		593,780		589,877
Parallel Ltd., Series 2021-2A, Class A2, 3 mo. USD LIBOR + 1.850%
6.658% FRN 10/20/34 (a)		450,000		428,160
Pioneer Aircraft Finance Ltd., Series 2019-1, Class A
3.967% 6/15/44 (a)		1,244,204		1,077,033
Planet Fitness Master Issuer LLC, Series 2019-1A, Class A2
3.858% 12/05/49 (a)		2,246,535		1,897,525
Rad CLO 12 Ltd., Series 2021-12A, Class A, 3 mo. USD LIBOR + 1.170%
5.972% FRN 10/30/34 (a)		1,000,000		972,073
Rockford Tower CLO Ltd., Series 2019-1A, Class B1R, 3 mo. USD LIBOR + 1.550%
6.358% FRN 4/20/34 (a)		1,500,000		1,423,700
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD LIBOR + 1.140%
5.932% FRN 10/15/35 (a)		1,000,000		973,041
RR 3 Ltd., Series 2018-3A, Class A1R2, 3 mo. USD LIBOR + 1.090%
5.882% FRN 1/15/30 (a)		2,450,000		2,427,230
RR 7 Ltd., Series 2019-7A, Class A2B, 3 mo. TSFR + 1.850%
6.508% FRN 1/15/37 (a)		750,000		721,924
Sierra Timeshare Receivables Funding LLC
Series 2021-1A, Class D, 3.170% 11/20/37 (a)		548,257		506,024
Series 2018-3A, Class D, 5.200% 9/20/35 (a)		236,166		231,335
Steele Creek CLO Ltd., Series 2018-2A, Class C, 3 mo. USD LIBOR + 2.300%
7.215% FRN 8/18/31 (a)		1,170,000		1,082,922
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD LIBOR + 1.200%
6.045% FRN 11/25/35 (a)		1,239,843		1,203,629
Structured Receivables Finance LLC, Series 2010-B, Class A
3.730% 8/15/36 (a)		59,811		57,551
Sunnova Helios II Issuer LLC, Series 2018-1A, Class A
4.870% 7/20/48 (a)		396,841		361,400
SuttonPark Structured Settlements LLC, Series 2017-1A, Class A
4.190% 1/15/71 (a)		1,702,807		1,546,948
Symphony CLO Ltd., Series 2023-30A, Class B, 3 mo. TSFR + 2.650%
1.000% FRN 4/20/35 (a) (f)		1,875,000		1,875,000
Thrust Engine Leasing, Series 2021-1A, Class A
4.163% 7/15/40 (a)		2,496,897		2,011,145
Thrust Engine Leasing DAC
Series 2021-1A, Class B, 6.121% 7/15/40 (a)		1,192,890		862,934
Series 2021-1A, Class C, 7.386% 7/15/40 (a)		910,792		663,719
TICP CLO XIV Ltd., Series 2019-14A, Class A2R, 3 mo. USD LIBOR + 1.650%
6.458% FRN 10/20/32 (a)		1,000,000		976,314
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD LIBOR + 1.280%
6.088% FRN 4/20/33 (a)		2,500,000		2,465,802

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Vivint Solar Financing V LLC, Series 2018-1A, Class B
7.370% 4/30/48 (a)	$	1,971,930	$	1,827,909
Voya CLO Ltd., Series 2021-3A, Class B, 3 mo. USD LIBOR + 1.160%
6.408% FRN 1/20/35 (a)		500,000		479,404
WAVE LLC, Series 2019-1A, Class A
3.597% 9/15/44 (a)		3,207,697		2,706,911
WAVE Trust
Series 2017-1A, Class A, 3.844% 11/15/42 (a)		282,887		224,576
Series 2017-1A, Class C, 6.656% 11/15/42 (a)		2,176,119		298,318
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		980,352		808,188
Wind River CLO Ltd.
Series 2018-2A, Class B, 3 mo. USD LIBOR + 1.750% 6.542% FRN 7/15/30 (a)		1,150,000		1,101,454
Series 2016-2A, Class BR, 3 mo. USD LIBOR + 1.800% 6.614% FRN 11/01/31 (a)		900,000		865,663
				100,727,119
Student Loans Asset-Backed Securities — 3.0%
College Avenue Student Loans LLC
Series 2019-A, Class B, 3.810% 12/28/48 (a)		1,325,751		1,217,166
Series 2019-A, Class C, 4.460% 12/28/48 (a)		884,059		821,331
Edsouth Indenture No. 8 LLC, Series 2014-4, Class B, 1 mo. USD LIBOR + 1.500%
6.345% FRN 6/25/48 (a)		1,200,000		1,192,974
Edsouth Indenture No. 9 LLC, Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500%
6.345% FRN 10/25/56 (a)		1,100,000		1,096,286
Educational Funding of the South, Inc., Series 2011-1, Class B, 3 mo. USD LIBOR + 3.700%
8.518% FRN 4/25/46		625,000		632,820
EDvestinU Private Education Loan Issue No 1 LLC, Series 2019-A, Class A
3.580% 11/25/38 (a)		587,755		554,848
Higher Education Funding I
Series 2004-1, Class B2, 0.000%FRN 1/01/44 (a) (d)		450,000		393,375
Series 2004-1, Class B1, 4.161% FRN 1/01/44 (a) (d)		450,000		404,805
Laurel Road Prime Student Loan Trust, Series 2017-B, Class BFX
3.020% 8/25/42 (a)		547,785		484,808
Navient Student Loan Trust
Series 2021-2A, Class B, 1 mo. USD LIBOR + 1.350% 6.195% FRN 2/25/70 (a)		2,330,000		2,293,624
Series 2015-3, Class B, 1 mo. USD LIBOR + 1.500% 6.345% FRN 10/25/58		940,000		815,160
Series 2016-2, Class A3, 1 mo. USD LIBOR + 1.500% 6.345% FRN 6/25/65 (a)		2,028,230		2,041,240
Nelnet Student Loan Trust
Series 2005-4, Class A4A, 1.145% FRN 3/22/32 (d)		110,000		108,931
Series 2019-5, Class B, 3.450% 10/25/67 (a)		2,150,000		1,751,229
Series 2006-3, Class B, 3 mo. USD LIBOR + .250% 5.384% FRN 6/25/41		350,180		316,461
Series 2019-1A, Class B, 1 mo. USD LIBOR + 1.400% 6.245% FRN 4/25/67 (a)		3,250,000		3,134,531
SLM Student Loan Trust
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.028% FRN 10/25/40		1,605,311		1,498,769
Series 2005-6, Class B, 3 mo. USD LIBOR + .290% 5.108% FRN 1/25/44		1,287,428		1,178,336
SoFi Alternative Trust, Series 2019-C, Class PT,
5.392% VRN 1/25/45 (a) (d)		1,806,110		1,693,404

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SoFi Professional Loan Program LLC, Series 2017-C, Class C,
4.210% VRN 7/25/40 (a) (d)	$	990,000	$	887,283
				22,517,381
Whole Loan Collateral Collateralized Mortgage Obligations — 2.4%
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
3.954% VRN 8/25/34 (d)		6,114		5,817
CSMC, Series 2021-NQM3, Class M1,
2.317% VRN 4/25/66 (a) (d)		1,330,000		849,188
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (d)		3,759,572		2,942,306
GS Mortgage-Backed Securities Trust, Series 2021-GR2, Class A2,
2.500% VRN 2/25/52 (a) (d)		2,074,206		1,685,536
New Residential Mortgage Loan Trust, Series 2021-INV1, Class A4,
2.500% VRN 6/25/51 (a) (d)		2,428,851		1,902,378
NewRez Warehouse Securitization Trust, Series 2021-1, Class D, 1 mo. USD LIBOR + 1.400%
6.245% FRN 5/25/55 (a)		2,258,533		2,208,929
NMLT Trust, Series 2021-INV1, Class M1,
2.711% VRN 5/25/56 (a) (d)		5,400,000		3,602,191
Starwood Mortgage Residential Trust, Series 2021-3, Class M1,
2.491% VRN 6/25/56 (a) (d)		2,448,000		1,556,783
Verus Securitization Trust
Series 2021-3, Class M1, 2.397% VRN 6/25/66 (a) (d)		3,640,000		2,368,627
Series 2021-R3, Class M1, 2.411% VRN 4/25/64 (a) (d)		1,147,000		889,648
Wells Fargo Mortgage Backed Securities Trust, Series 2019-1, Class A1,
3.938% VRN 11/25/48 (a) (d)		44,044		41,875
				18,053,278
Whole Loan Collateral Support Collateralized Mortgage Obligations — 0.2%
GS Mortgage-Backed Securities Trust, Series 2021-GR2, Class A4,
2.500% VRN 2/25/52 (a) (d)		1,377,619		1,080,731
JP Morgan Mortgage Trust, Series 2017-1, Class A11,
3.448% VRN 1/25/47 (a) (d)		523,299		467,036
				1,547,767
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $239,447,009)				207,632,998
SOVEREIGN DEBT OBLIGATION — 0.4%
Mexico Government International Bond
4.750% 3/08/44		3,727,000		3,156,515
TOTAL SOVEREIGN DEBT OBLIGATIONS (Cost $3,741,890)				3,156,515
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (g) — 30.4%
Collateralized Mortgage Obligations — 0.0%
Federal Home Loan Mortgage Corp. Series 2178, Class PB 7.000% 8/15/29		14,858		15,314
Pass-Through Securities — 30.4%
Federal Home Loan Mortgage Corp.
Pool #RA4245 2.000% 12/01/50		2,135,469		1,778,154
Pool #RA4255 2.000% 1/01/51		4,446,036		3,709,054

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #RA5576 2.500% 7/01/51	$	7,905,978	$	6,859,911
Pool #SD0905 3.000% 3/01/52		3,476,744		3,136,689
Pool #J13972 3.500% 1/01/26		6,868		6,741
Pool #C91344 3.500% 11/01/30		39,073		38,064
Pool #C91424 3.500% 1/01/32		23,401		22,797
Pool #RA2483 3.500% 6/01/50		3,864,709		3,616,316
Pool #SD1523 4.000% 8/01/52		5,249,480		5,050,625
Pool #SD1603 4.000% 9/01/52		3,302,277		3,160,775
Pool #C91239 4.500% 3/01/29		1,946		1,942
Pool #C91251 4.500% 6/01/29		12,778		12,756
Pool #C90939 5.500% 12/01/25		5,021		5,071
Pool #D97258 5.500% 4/01/27		2,716		2,743
Pool #C91026 5.500% 4/01/27		10,749		10,856
Pool #C91074 5.500% 8/01/27		1,149		1,160
Pool #D97417 5.500% 10/01/27		6,501		6,580
Pool #C91128 5.500% 12/01/27		772		781
Pool #C91148 5.500% 1/01/28		24,193		24,437
Pool #C91176 5.500% 5/01/28		9,989		10,179
Pool #C91217 5.500% 11/01/28		3,517		3,584
Federal National Mortgage Association
Pool #CB0414 2.500% 5/01/51 (f)		6,486,490		5,599,862
Pool #FM8596 2.500% 9/01/51		2,099,782		1,821,952
Pool #FM9104 2.500% 10/01/51		6,059,755		5,254,180
Pool #FM9227 2.500% 10/01/51		4,495,420		3,879,543
Pool #MA4548 2.500% 2/01/52 (f)		6,721,540		5,796,482
Pool #FS3035 2.500% 4/01/52		9,263,450		8,037,771
Pool #MA3029 3.000% 6/01/32		1,130,477		1,081,578
Pool #MA3090 3.000% 8/01/32		459,537		439,660
Pool #AO8180 3.000% 9/01/42		10,018		9,320
Pool #AB7397 3.000% 12/01/42		64,545		60,046
Pool #AB7401 3.000% 12/01/42		52,094		48,476
Pool #AP8668 3.000% 12/01/42		79,525		73,959
Pool #AR1975 3.000% 12/01/42		14,763		13,737
Pool #AR0306 3.000% 1/01/43		4,189		3,899
Pool #AR5391 3.000% 1/01/43		15,891		14,770
Pool #AL3215 3.000% 2/01/43		50,677		47,126
Pool #AR4109 3.000% 2/01/43		54,502		50,668
Pool #AR4432 3.000% 3/01/43		23,542		21,889
Pool #AT0169 3.000% 3/01/43		111,644		103,778
Pool #AB8809 3.000% 3/01/43		26,480		24,635
Pool #MA1368 3.000% 3/01/43		100,091		93,080
Pool #AR2174 3.000% 4/01/43		95,460		88,025
Pool #FS1075 3.000% 3/01/52		3,536,877		3,192,047
Pool #CB3304 3.000% 4/01/52		5,336,369		4,816,096
Pool #CB3305 3.000% 4/01/52		6,333,015		5,709,635
Pool #775539 12 mo. USD LIBOR + 1.641% 3.391% FRN 5/01/34		11,400		11,603
Pool #AS1304 3.500% 12/01/28		421,519		413,128
Pool #MA1356 3.500% 2/01/43		3,672,751		3,474,493
Pool #CA6096 3.500% 6/01/50		4,186,618		3,904,452
Pool #FM4017 3.500% 8/01/50		289,529		270,920
Pool #CB3842 3.500% 6/01/52		10,333,356		9,643,376
Pool #AA3980 4.500% 4/01/28		20,067		19,892
Pool #CA1909 4.500% 6/01/48		1,922,108		1,910,769
Pool #CB3866 4.500% 6/01/52		6,082,910		6,000,929
Pool #CB4129 4.500% 7/01/52		5,285,934		5,193,220
Pool #AD6437 5.000% 6/01/40		182,947		187,837
Pool #AD6996 5.000% 7/01/40		1,179,164		1,211,377
Pool #AL8173 5.000% 2/01/44		400,902		410,880

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
Pool #AD0836 5.500% 11/01/28	$	20,840	$	21,047
Government National Mortgage Association
Pool #352022 7.000% 11/15/23		176		176
Pool #374440 7.000% 11/15/23		14		14
Pool #491089 7.000% 12/15/28		2,923		2,946
Pool #480539 7.000% 4/15/29		61		63
Pool #488634 7.000% 5/15/29		1,396		1,443
Pool #500928 7.000% 5/15/29		2,358		2,450
Pool #510083 7.000% 7/15/29		207		213
Pool #493723 7.000% 8/15/29		1,757		1,830
Pool #581417 7.000% 7/15/32		3,245		3,354
Government National Mortgage Association II
Pool #008746 1 year CMT + 1.500% 2.750% FRN 11/20/25		845		826
Pool #080136 1 year CMT + 1.500% 2.750% FRN 11/20/27		299		291
Pool #MA6038 3.000% 7/20/49		2,124,511		1,953,434
Pool #MA6283 3.000% 11/20/49		3,811,264		3,500,788
Pool #MA6409 3.000% 1/20/50		3,918,883		3,598,416
Pool #MA4321 3.500% 3/20/47		2,345,557		2,232,391
Government National Mortgage Association II TBA
2.500% 4/20/53 (f)		13,050,000		11,485,019
3.000% 4/20/53 (f)		13,125,000		11,935,547
3.500% 4/20/53 (f)		5,770,000		5,408,023
4.500% 4/20/53 (f)		2,000,000		1,969,375
Uniform Mortgage Backed Securities TBA
2.000% 4/13/53 (f)		8,925,000		7,372,189
2.500% 4/13/53 (f)		12,350,000		10,643,192
3.000% 4/13/53 (f)		15,525,000		13,916,706
3.500% 4/13/53 (f)		2,000,000		1,856,875
4.000% 4/13/53 (f)		18,350,000		17,538,585
4.500% 4/17/38 (f)		7,500,000		7,475,977
4.500% 4/13/53 (f)		1,975,000		1,933,957
5.000% 4/17/38 (f)		7,400,000		7,449,719
5.000% 4/13/53 (f)		10,300,000		10,267,812
				226,966,963
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $233,067,159)				226,982,277
U.S. TREASURY OBLIGATIONS — 1.8%
U.S. Treasury Bonds & Notes — 1.8%
U.S. Treasury Bond
2.250% 8/15/49 (h)		18,500,000		13,846,134
TOTAL U.S. TREASURY OBLIGATIONS (Cost $15,055,188)				13,846,134
TOTAL BONDS & NOTES (Cost $816,115,834)				737,142,376
	Number of Shares
MUTUAL FUNDS — 0.5%
Diversified Financial Services — 0.5%
State Street Navigator Securities Lending Government Money Market Portfolio (i)		3,699,238		3,699,238
TOTAL MUTUAL FUNDS (Cost $3,699,238)				3,699,238
TOTAL LONG-TERM INVESTMENTS (Cost $819,815,072)				740,841,614

MML Managed Bond Fund —  Portfolio of Investments (Continued)

	Principal Amount		Value
SHORT-TERM INVESTMENTS — 16.6%
Commercial Paper — 16.1%
Amcor Flexibles North America, Inc.
5.009% 4/06/23 (a)	$	1,000,000	$	999,148
5.191% 4/10/23 (a)		3,000,000		2,995,676
5.397% 4/28/23 (a)		5,000,000		4,978,984
American Honda Finance Corp.
5.162% 4/13/23		2,000,000		1,996,247
5.940% 6/12/23		10,000,000		9,888,249
Avangrid, Inc.
5.273% 5/01/23 (a)		11,000,000		10,949,750
BAT International Finance PLC
6.041% 5/22/23 (a)		10,000,000		9,921,856
Dentsply Sirona, Inc.
5.240% 4/03/23 (a)		8,000,000		7,996,540
Dollar General Corp.
5.549% 4/12/23 (a)		2,000,000		1,996,561
Fidelity National Information Services, Inc.
5.906% 4/17/23 (a)		9,000,000		8,977,989
Ingredion, Inc.
5.156% 4/06/23 (a)		6,000,000		5,994,910
Nutrien Ltd.
5.000% 4/04/23 (a)		9,000,000		8,994,890
Oracle Corp.
5.017% 4/14/23 (a)		10,000,000		9,981,703
Rogers Communications, Inc.
5.863% 5/03/23 (a)		9,000,000		8,956,151
Suncor Energy, Inc.
5.186% 4/27/23 (a)		10,000,000		9,960,423
Tampa Electric Co.
5.808% 4/24/23 (a)		6,000,000		5,978,908
WPP CP LLC
5.703% 4/13/23 (a)		10,000,000		9,981,341
				120,549,326
Repurchase Agreement — 0.5%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (j)		3,406,019		3,406,019
TOTAL SHORT-TERM INVESTMENTS (Cost $123,954,325)				123,955,345
TOTAL INVESTMENTS — 115.7% (Cost $943,769,397) (k)				864,796,959
Other Assets/(Liabilities) — (15.7)%				(117,183,511)
NET ASSETS — 100.0%			$	747,613,448

MML Managed Bond Fund —  Portfolio of Investments (Continued)

Abbreviation Legend

CLO Collateralized Loan Obligation

FRN Floating Rate Note

STEP Step Up Bond

TBA To Be Announced

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At March 31, 2023, the aggregate market value of these securities amounted to $403,024,089 or 53.91% 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 March 31, 2023, was $3,621,867 or 0.48% of net assets. (Note 2).

(d) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at March 31, 2023.

(e) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At March 31, 2023, these securities amounted to a value of $1,750,000 or 0.23% of net assets.

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

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

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

(j) Maturity value of $3,406,428. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $3,474,197.

(k) 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	6/21/23		106	$	13,524,695	$	377,868
U.S. Treasury Ultra Bond	6/21/23		268		36,810,494		1,011,006
U.S. Treasury Note 2 Year	6/30/23		420		85,946,792		763,521
U.S. Treasury Note 5 Year	6/30/23		243		26,163,225		447,174
						$	2,599,569
Short
U.S. Treasury Ultra 10 Year	6/21/23		189	$	(22,270,469)	$	(625,109)

MML Managed Bond Fund —  Portfolio of Investments (Continued)

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation\ (Depreciation)

CDX.NA.IG Series 40†

1.000%

Quarterly

6/20/28

USD

110,000,000

$

(1,240,910)

$

(574,784)

$

(666,126)

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation\ (Depreciation)
12-Month USD SOFR	Annually		Fixed 3.965%		Annually		6/23/25	USD	50,000,000	$	79,843	$	—	$	79,843
12-Month USD SOFR	Annually		Fixed 3.815%		Annually		6/30/25	USD	49,000,000		(42,097)		—		(42,097)
Fixed 3.293%	Annually		12-Month USD SOFR		Annually		6/23/33	USD	11,000,000		(117,401)		—		(117,401)
Fixed 3.223%	Annually		12-Month USD SOFR		Annually		6/30/33	USD	11,210,000		(57,526)		—		(57,526)
										$	(137,181)	$	—	$	(137,181)

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

Currency Legend

USD U.S. Dollar

MML Short-Duration Bond Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Principal Amount		Value
BONDS & NOTES — 91.9%
CORPORATE DEBT — 48.3%
Aerospace & Defense — 0.2%
The Boeing Co.
2.196% 2/04/26	$	350,000	$	324,831
Agriculture — 1.5%
BAT Capital Corp.
4.700% 4/02/27		1,185,000		1,161,850
Imperial Brands Finance PLC
3.125% 7/26/24 (a)		400,000		387,300
Wens Foodstuffs Group Co. Ltd.
2.349% 10/29/25 (a)		450,000		387,673
				1,936,823
Auto Manufacturers — 2.1%
Daimler Truck Finance North America LLC
5.150% 1/16/26 (a)		330,000		331,114
Ford Motor Credit Co. LLC
2.300% 2/10/25		645,000		597,770
Hyundai Capital America
1.500% 6/15/26 (a)		750,000		666,035
Nissan Motor Acceptance Co. LLC
1.850% 9/16/26 (a)		1,235,000		1,069,413
				2,664,332
Banks — 10.1%
ABN AMRO Bank NV
4.750% 7/28/25 (a)		625,000		603,219
Banco Santander SA
1.849% 3/25/26		600,000		537,760
Bank Mandiri Persero Tbk PT
5.500% 4/04/26 (a) (b)		384,000		382,725
Bank of America Corp.
SOFR + .960% 1.734% VRN 7/22/27		265,000		236,449
3.950% 4/21/25		178,000		172,247
Barclays PLC
5.200% 5/12/26		1,055,000		1,009,021
BPCE SA
4.625% 7/11/24 (a)		200,000		195,044
5.700% 10/22/23 (a)		805,000		798,785
Citigroup, Inc.
4.450% 9/29/27		465,000		450,712
Credit Suisse Group AG
SOFR + .980% 1.305% VRN 2/02/27 (a)		450,000		378,783
6.500% 8/08/23 (a)		930,000		885,825
Danske Bank A/S
1 year CMT + .730% 1.549% VRN 9/10/27 (a) (c)		485,000		426,101

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

		Principal Amount		Value
1 year CMT + 2.100% 6.466% VRN 1/09/26 (a)		$	275,000	$	275,129
Deutsche Bank AG
SOFR + 2.159% 2.222% VRN 9/18/24			435,000		422,941
SOFR + 1.219% 2.311% VRN 11/16/27			430,000		364,056
HSBC Holdings PLC
SOFR + 1.430% 2.999% VRN 3/10/26			430,000		405,025
SOFR + 3.350% 7.390% VRN 11/03/28			310,000		329,677
JP Morgan Chase & Co. SOFR + .765%
1.470% VRN 9/22/27			445,000		392,050
Lloyds Banking Group PLC 1 year CMT + 1.700%
5.871% VRN 3/06/29			325,000		327,389
Macquarie Group Ltd. SOFR + 1.069%
1.340% VRN 1/12/27 (a)	��		845,000		753,365
Mitsubishi UFJ Financial Group, Inc. 1 year CMT + 1.550%
5.063% VRN 9/12/25			345,000		342,500
Morgan Stanley
SOFR + 1.610% 4.210% VRN 4/20/28			245,000		237,580
4.350% 9/08/26			1,150,000		1,119,997
Natwest Group PLC 1 year CMT + .900%
1.642% VRN 6/14/27			345,000		303,924
Santander UK Group Holdings PLC SOFR + 1.220%
2.469% VRN 1/11/28			370,000		325,156
Societe Generale SA
1 year CMT + 1.100% 1.488% VRN 12/14/26 (a)			525,000		457,480
1 year CMT + 1.300% 2.797% VRN 1/19/28 (a)			200,000		176,418
Synovus Bank GA
5.625% 2/15/28			273,000		244,807
UBS Group AG 1 year CMT + 1.080%
1.364% VRN 1/30/27 (a)			400,000		350,979
					12,905,144
Beverages — 0.6%
Bacardi Ltd.
4.450% 5/15/25 (a)			378,000		371,929
JDE Peet's NV
1.375% 1/15/27 (a)			407,000		353,090
					725,019
Biotechnology — 0.2%
Amgen, Inc.
5.150% 3/02/28			325,000		331,564
Chemicals — 2.6%
Celanese US Holdings LLC
1.400% 8/05/26			250,000		214,545
6.165% 7/15/27			200,000		201,845
International Flavors & Fragrances, Inc.
1.832% 10/15/27 (a)			400,000		338,838
MEGlobal Canada ULC
5.000% 5/18/25 (a)			450,000		445,167
Orbia Advance Corp. SAB de CV
1.875% 5/11/26 (a)			957,000		853,267
Syngenta Finance NV
4.441% 4/24/23 (a)			183,000		182,781
4.892% 4/24/25 (a)			335,000		327,334
Yara International ASA
3.800% 6/06/26 (a)			325,000		305,444

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

	Principal Amount		Value
4.750% 6/01/28 (a)	$	450,000	$	429,556
				3,298,777
Commercial Services — 0.7%
Triton Container International Ltd.
2.050% 4/15/26 (a)		950,000		842,446
Distribution & Wholesale — 0.8%
Ferguson Finance PLC
4.250% 4/20/27 (a)		355,000		340,974
Li & Fung Ltd.
5.000% STEP 8/18/25 (a)		675,000		628,087
				969,061
Diversified Financial Services — 3.9%
AerCap Ireland Capital DAC / AerCap Global Aviation Trust
2.450% 10/29/26		555,000		498,678
6.500% 7/15/25		300,000		302,010
Aircastle Ltd.
4.125% 5/01/24		740,000		724,241
ANB Sukuk Ltd. 5 year CMT + 2.974%
3.326% VRN 10/28/30 (a)		650,000		608,432
Antares Holdings LP
2.750% 1/15/27 (a)		310,000		252,312
3.950% 7/15/26 (a)		605,000		524,433
6.000% 8/15/23 (a)		323,000		321,527
Avolon Holdings Funding Ltd.
2.875% 2/15/25 (a)		800,000		749,510
4.250% 4/15/26 (a)		250,000		234,885
BGC Partners, Inc.
4.375% 12/15/25		505,000		479,725
LeasePlan Corp. NV
2.875% 10/24/24 (a)		280,000		265,890
				4,961,643
Electric — 1.4%
Alliant Energy Finance LLC
1.400% 3/15/26 (a)		260,000		230,219
Enel Finance International NV
1.375% 7/12/26 (a)		620,000		551,616
4.625% 6/15/27 (a)		377,000		368,786
Pacific Gas and Electric Co.
4.950% 6/08/25		380,000		375,254
Pennsylvania Electric Co.
5.150% 3/30/26 (a)		226,000		226,815
				1,752,690
Electronics — 0.2%
Jabil, Inc.
4.250% 5/15/27		285,000		274,427
Energy – Alternate Sources — 0.5%
Contemporary Ruiding Development Ltd.
1.500% 9/09/26 (a)		682,000		600,740

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

	Principal Amount		Value
Entertainment — 0.6%
Warnermedia Holdings, Inc.
3.638% 3/15/25 (a)	$	750,000	$	724,079
Food — 1.6%
JBS USA LUX SA/JBS USA Food Co./JBS USA Finance, Inc.
2.500% 1/15/27 (a)		860,000		763,680
Pilgrim's Pride Corp.
5.875% 9/30/27 (a)		112,000		111,328
Sigma Alimentos SA de CV
4.125% 5/02/26 (a)		450,000		429,354
Smithfield Foods, Inc.
4.250% 2/01/27 (a)		775,000		720,538
				2,024,900
Forest Products & Paper — 0.8%
Fibria Overseas Finance Ltd.
4.000% 1/14/25		1,000,000		969,795
Home Builders — 0.3%
Toll Brothers Finance Corp.
4.875% 3/15/27		375,000		363,437
Housewares — 0.1%
Newell Brands, Inc.
6.375% 9/15/27 (c)		200,000		201,920
Insurance — 3.6%
AmTrust Financial Services, Inc.
6.125% 8/15/23		620,000		609,798
Athene Global Funding
1.730% 10/02/26 (a)		445,000		386,150
2.500% 1/14/25 (a)		420,000		396,075
3.205% 3/08/27 (a) (c)		212,000		194,611
CNO Financial Group, Inc.
5.250% 5/30/25		266,000		263,044
CNO Global Funding
1.750% 10/07/26 (a)		714,000		639,365
Corebridge Financial, Inc.
3.650% 4/05/27 (a)		235,000		219,974
GA Global Funding Trust
2.250% 1/06/27 (a)		685,000		597,180
Jackson Financial, Inc.
5.170% 6/08/27 (c)		181,000		180,404
Sammons Financial Group, Inc.
4.450% 5/12/27 (a)		1,140,000		1,077,129
				4,563,730
Internet — 0.6%
Expedia Group, Inc.
4.625% 8/01/27		309,000		302,595
Netflix, Inc.
5.875% 11/15/28		430,000		452,012
				754,607

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

	Principal Amount		Value
Investment Companies — 2.8%
Ares Capital Corp.
3.875% 1/15/26	$	535,000	$	493,052
BlackRock TCP Capital Corp.
3.900% 8/23/24		163,000		157,012
Blackstone Private Credit Fund
2.625% 12/15/26		890,000		747,005
2.700% 1/15/25		325,000		299,168
Golub Capital BDC, Inc.
2.500% 8/24/26		270,000		231,241
3.375% 4/15/24		330,000		317,172
Icahn Enterprises LP/ Icahn Enterprises Finance Corp.
4.750% 9/15/24		445,000		433,946
OWL Rock Core Income Corp.
4.700% 2/08/27		500,000		451,352
Sixth Street Specialty Lending, Inc.
3.875% 11/01/24 (c)		410,000		390,817
				3,520,765
Iron & Steel — 0.8%
Vale Overseas Ltd.
6.250% 8/10/26		1,030,000		1,055,521
Leisure Time — 0.2%
Harley-Davidson Financial Services, Inc.
3.350% 6/08/25 (a)		330,000		314,947
Lodging — 0.7%
Las Vegas Sands Corp.
3.200% 8/08/24		875,000		847,873
Machinery – Construction & Mining — 0.6%
The Weir Group PLC
2.200% 5/13/26 (a)		880,000		792,128
Mining — 0.9%
Alcoa Nederland Holding BV
6.125% 5/15/28 (a)		395,000		395,482
Indonesia Asahan Aluminium Persero PT
4.750% 5/15/25 (a)		750,000		738,844
				1,134,326
Oil & Gas — 2.4%
EQT Corp.
6.125% STEP 2/01/25		649,000		652,860
Ovintiv Exploration, Inc.
5.375% 1/01/26		275,000		275,318
Parkland Corp.
5.875% 7/15/27 (a)		193,000		187,227
Patterson-UTI Energy, Inc.
3.950% 2/01/28 (c)		685,000		607,660
Petroleos Mexicanos
4.625% 9/21/23		715,000		709,158
Ras Laffan Liquefied Natural Gas Co. Ltd.
5.838% 9/30/27 (a)		566,550		575,366
				3,007,589

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

	Principal Amount		Value
Pharmaceuticals — 1.5%
Bayer US Finance II LLC
4.250% 12/15/25 (a)	$	400,000	$	391,113
Hikma Finance USA LLC
3.250% 7/09/25 (a)		675,000		634,284
Viatris, Inc.
2.300% 6/22/27		1,025,000		897,485
				1,922,882
Pipelines — 1.3%
Energy Transfer LP
4.950% 6/15/28		975,000		966,880
Plains All American Pipeline LP/PAA Finance Corp.
4.500% 12/15/26		90,000		87,865
4.650% 10/15/25		560,000		553,672
				1,608,417
Private Equity — 0.5%
Hercules Capital, Inc.
2.625% 9/16/26		560,000		473,379
3.375% 1/20/27 (c)		270,000		231,522
				704,901
Real Estate — 0.0%
Shimao Group Holdings Ltd.
6.125% 2/21/24 (a)		400,000		55,800
Real Estate Investment Trusts (REITS) — 2.4%
CubeSmart LP
2.250% 12/15/28		390,000		333,996
Global Net Lease, Inc./Global Net Lease Operating Partnership LP
3.750% 12/15/27 (a)		335,000		264,864
GLP Capital LP/GLP Financing II, Inc.
5.375% 4/15/26		348,000		337,553
Omega Healthcare Investors, Inc.
4.750% 1/15/28		779,000		722,482
SBA Tower Trust
1.884% 7/15/50 (a)		287,000		259,094
Service Properties Trust
4.350% 10/01/24		935,000		894,337
Vornado Realty LP
2.150% 6/01/26		310,000		248,178
				3,060,504
Retail — 0.4%
Advance Auto Parts, Inc.
5.900% 3/09/26		144,000		146,993
Nordstrom, Inc.
2.300% 4/08/24 (c)		268,000		255,940
4.000% 3/15/27 (c)		86,000		72,674
				475,607

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

	Principal Amount		Value
Software — 0.2%
Oracle Corp.
4.500% 5/06/28	$	298,000	$	294,377
Telecommunications — 1.2%
T-Mobile USA, Inc.
4.950% 3/15/28		298,000		300,858
Telecom Italia SpA
5.303% 5/30/24 (a) (c)		430,000		421,400
Tower Bersama Infrastructure Tbk PT
4.250% 1/21/25 (a)		895,000		863,046
				1,585,304
TOTAL CORPORATE DEBT (Cost $66,582,476)				61,570,906
NON-U.S. GOVERNMENT AGENCY OBLIGATIONS — 41.4%
Automobile Asset-Backed Securities — 2.5%
Avis Budget Rental Car Funding AESOP LLC
Series 2019-3A, Class C, 3.150% 3/20/26 (a)		1,083,000		1,002,667
Series 2018-1A, Class C, 4.730% 9/20/24 (a)		500,000		497,581
Carmax Auto Owner Trust, Series 2021-4, Class D
1.480% 3/15/28		250,000		224,720
Carvana Auto Receivables Trust
Series 2021-N1, Class D, 1.500% 1/10/28		677,375		636,215
Series 2021-P3, Class D, 2.250% 9/11/28		855,000		642,388
Santander Revolving Auto Loan Trust, Series 2019-A, Class D
3.450% 1/26/32 (a)		215,000		196,108
				3,199,679
Commercial Mortgage-Backed Securities — 6.1%
BAMLL Commercial Mortgage Securities Trust
Series 2019-BPR, Class CMP, 3.895% VRN 11/05/32 (a) (d)		370,000		312,086
Series 2019-BPR, Class DMP, 3.895% VRN 11/05/32 (a) (d)		450,000		374,142
BHMS Mortgage Trust, Series 2018-ATLS, Class B, 1 mo. USD LIBOR + 1.500%
6.184% FRN 7/15/35 (a)		500,000		475,539
BX Commercial Mortgage Trust
Series 2021-SOAR, Class E, 1 mo. USD LIBOR + 1.800% 6.485% FRN 6/15/38 (a)		321,813		300,089
Series 2021-VOLT, Class E, 1 mo. USD LIBOR + 2.000% 6.684% FRN 9/15/36 (a)		792,000		736,431
Series 2019-XL, Class E, 1 mo. USD Term SOFR + 1.914% 6.742% FRN 10/15/36 (a)		268,600		260,889
Series 2019-XL, Class F, 1 mo. USD Term SOFR + 2.114% 6.942% FRN 10/15/36 (a)		753,100		727,720
CAMB Commercial Mortgage Trust, Series 2019-LIFE, Class E, 1 mo. USD LIBOR + 2.150%
6.834% FRN 12/15/37 (a)		545,194		526,114
Commercial Mortgage Trust, Series 2014-CR14, Class A2
3.147% 2/10/47		74,480		75,487
Credit Suisse Mortgage Capital Certificates, Series 2019-ICE4, Class D, 1 mo. USD LIBOR + 1.600%
6.284% FRN 5/15/36 (a)		199,504		195,018

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

	Principal Amount		Value
KIND Trust
Series 2021-KIND, Class B, 1 mo. USD Term SOFR + 1.464% 6.292% FRN 8/15/38 (a)	$	546,053	$	512,750
Series 2021-KIND, Class C, 1 mo. USD Term SOFR + 1.864% 6.692% FRN 8/15/38 (a)		595,695		561,683
KNDL Mortgage Trust, Series 2019-KNSQ, Class E, 1 mo. USD LIBOR + 1.800%
6.484% FRN 5/15/36 (a)		251,000		244,494
Life Mortgage Trust, Series 2021-BMR, Class E, 1 mo. USD Term SOFR + 1.864%
6.692% FRN 3/15/38 (a)		365,665		340,984
MHC Commercial Mortgage Trust, Series 2021-MHC, Class E, 1 mo. USD LIBOR + 2.101%
6.785% FRN 4/15/38 (a)		620,000		581,251
One New York Plaza Trust
Series 2020-1NYP, Class C, 1 mo. USD LIBOR + 2.200% 6.884% FRN 1/15/36 (a)		616,000		543,171
Series 2020-1NYP, Class D, 1 mo. USD LIBOR + 2.750% 7.434% FRN 1/15/36 (a)		414,000		352,795
VASA Trust, Series 2021-VASA, Class D, 1 mo. USD LIBOR + 2.100%
6.784% FRN 7/15/39 (a)		711,000		626,463
				7,747,106
Home Equity Asset-Backed Securities — 0.0%
Credit Suisse Seasoned Loan Trust, Series 2006-1, Class A, 1 mo. USD LIBOR + .480%
5.325% FRN 10/25/34 (a)		10,156		10,231
Other Asset-Backed Securities — 20.0%
321 Henderson Receivables LLC
Series 2010-3A, Class A, 3.820% 12/15/48 (a)		84,515		82,116
Series 2006-1A, Class A1, 1 mo. USD LIBOR + .200% 4.884% FRN 3/15/41 (a)		1,305		1,303
Adams Outdoor Advertising LP, Series 2018-1, Class A
4.810% 11/15/48 (a)		342,195		326,464
AIMCO CLO 10 Ltd., Series 2019-10A, Class AR, 3 mo. USD LIBOR + 1.060%
5.875% FRN 7/22/32 (a)		1,000,000		980,264
Apidos CLO XXVI, Series 2017-26A, Class A2R, 3 mo. USD LIBOR + 1.500%
6.295% FRN 7/18/29 (a)		500,000		488,988
Aqua Finance Trust, Series 2021-A, Class A
1.540% 7/17/46 (a)		971,227		875,900
Ballyrock CLO Ltd., Series 2020-2A, Class A2R, 3 mo. USD LIBOR + 1.550%
6.358% FRN 10/20/31 (a)		800,000		774,110
BHG Securitization Trust
Series 2021-B, Class C, 2.240% 10/17/34 (a)		448,000		376,650
Series 2022-C, Class A, 5.320% 10/17/35 (a)		636,099		635,811
BlueMountain Fuji US CLO I Ltd., Series 2017-1A, Class A1R, 3 mo. USD LIBOR + .980%
5.788% FRN 7/20/29 (a)		538,016		531,282
BRE Grand Islander Timeshare Issuer LLC
Series 2017-1A, Class A, 2.940% 5/25/29 (a)		42,417		41,269
Series 2019-A, Class B, 3.780% 9/26/33 (a)		137,254		130,921
Business Jet Securities LLC
Series 2021-1A, Class A, 2.162% 4/15/36 (a)		439,082		410,542
Series 2020-1A, Class A, 2.981% 11/15/35 (a)		77,467		73,431

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

	Principal Amount		Value
Canyon Capital CLO Ltd., Series 2017-1A, Class CR, 3 mo. USD LIBOR + 2.000%
6.792% FRN 7/15/30 (a)	$	300,000	$	282,926
Capital Automotive REIT
Series 2020-1A, Class B1, 4.170% 2/15/50 (a)		484,000		449,793
Series 2017-1A, Class A2, 4.180% 4/15/47 (a)		580,202		553,724
Cedar Funding IX CLO Ltd., Series 2018-9A, Class A1, 3 mo. USD LIBOR + .980%
5.788% FRN 4/20/31 (a)		250,000		247,330
CF Hippolyta Issuer LLC, Series 2020-1, Class B1
2.280% 7/15/60 (a)		91,153		77,754
CIFC Funding Ltd.
Series 2021-1A, Class A1, 3 mo. USD LIBOR + 1.110% 5.928% FRN 4/25/33 (a)		500,000		492,719
Series 2017-4A, Class A2R, 3 mo. USD LIBOR + 1.550% 6.366% FRN 10/24/30 (a)		500,000		485,737
DataBank Issuer, Series 2021-1A, Class A2
2.060% 2/27/51 (a)		991,000		893,212
Elara HGV Timeshare Issuer LLC
Series 2016-A, Class A, 2.730% 4/25/28 (a)		70,572		69,948
Series 2017-A, Class B, 2.960% 3/25/30 (a)		124,890		120,114
Series 2019-A, Class C, 3.450% 1/25/34 (a)		297,474		278,004
FCI Funding LLC, Series 2019-1A, Class A
3.630% 2/18/31 (a)		3,183		3,179
Firstkey Homes Trust, Series 2021, Class E2
2.489% 8/17/38 (a)		460,000		392,695
FNA VI LLC, Series 21-1A, Class A
1.350% 1/10/32 (a)		1,163,453		1,058,636
Goldman Home Improvement Trust Issuer Trust, Series 2021-GRN2, Class A
1.150% 6/25/51 (a)		519,455		480,032
Goodgreen Trust
Series 2019-2A, Class A, 2.760% 4/15/55 (a)		340,353		282,443
Series 2016-1A, Class A, 3.230% 10/15/52 (a)		166,769		154,074
Series 2019-1A, Class A, 3.860% 10/15/54 (a)		159,252		145,826
Series 2018-1A, Class A, 3.930% VRN 10/15/53 (a) (d)		147,073		133,787
Gracie Point International Funding, Series 2022-3A, Class B, 30 day SOFR + 4.000%
8.517% FRN 11/01/24 (a)		1,000,000		1,000,568
Hero Funding Trust
Series 2017-3A, Class A1, 3.190% 9/20/48 (a)		85,844		78,835
Series 2016-4A, Class A1, 3.570% 9/20/47 (a)		82,788		77,776
Series 2015-1A, Class A, 3.840% 9/21/40 (a)		176,828		169,063
Series 2018-1A, Class A2, 4.670% 9/20/48 (a)		153,321		147,016
HIN Timeshare Trust, Series 2020-A, Class B
2.230% 10/09/39 (a)		438,196		404,927
Horizon Aircraft Finance I Ltd., Series 2018-1, Class A
4.458% 12/15/38 (a)		472,247		410,557
Horizon Aircraft Finance III Ltd.
Series 2019-2, Class A, 3.425% 11/15/39 (a)		355,919		288,291
Series 2019-2, Class B, 4.458% 11/15/39 (a)		683,333		423,661
KKR CLO Ltd., Series 28A, Class A, 3 mo. USD LIBOR + 1.140%
6.006% FRN 3/15/31 (a)		250,000		247,096
KREF Ltd., Series 2021-FL2, Class AS, 1 mo. USD LIBOR + 1.300%
6.009% FRN 2/15/39 (a)		900,000		850,224
Lendingpoint Asset Securitization, Series 2021-A, Class B
1.110% 2/15/29 (a)		84,735		84,513
MACH 1 Cayman Ltd., Series 2019-1, Class A
3.474% 10/15/39 (a)		271,845		228,189

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

	Principal Amount		Value
Madison Park Funding XXXII Ltd., Series 2018-32A, Class BR, 3 mo. USD LIBOR + 1.400%
6.215% FRN 1/22/31 (a)	$	500,000	$	481,871
Mosaic Solar Loans LLC
Series 2018-2GS, Class A, 4.200% 2/22/44 (a)		135,918		126,467
Series 2017-1A, Class A, 4.450% 6/20/42 (a)		30,424		29,214
Neuberger Berman Loan Advisers CLO 25 Ltd., Series 2017-25A, Class BR, 3 mo. USD LIBOR + 1.350%
6.145% FRN 10/18/29 (a)		1,000,000		968,195
Newark BSL CLO 2 Ltd., Series 2017-1A, Class A2R, 3 mo. USD LIBOR + 1.400%
6.218% FRN 7/25/30 (a)		250,000		242,941
NP SPE II LP, Series 2017-1A, Class A1
3.372% 10/21/47 (a)		94,131		88,959
Oak Street Investment Grade Net Lease Fund, Series 2020-1A, Class A3
2.260% 11/20/50 (a)		400,000		338,485
Orange Lake Timeshare Trust, Series 2016-A, Class B
2.910% 3/08/29 (a)		42,010		40,218
Oxford Finance Funding Trust, Series 2020-1A, Class A2
3.101% 2/15/28 (a)		108,628		107,914
Palmer Square CLO Ltd., Series 2020-3A, Class A2R, 3 mo. USD LIBOR + 1.600%
6.464% FRN 11/15/31 (a)		500,000		486,371
Rad CLO 1 Ltd., Series 2018-1A, Class BR, 3 mo. USD LIBOR + 1.400%
6.192% FRN 7/15/31 (a)		350,000		337,729
RAMP Trust, Series 2005-EFC1, Class M5, 1 mo. USD LIBOR + .650%
4.694% FRN 5/25/35		198,595		192,762
RR 19 Ltd., Series 2021-19A, Class A1, 3 mo. USD LIBOR + 1.140%
5.932% FRN 10/15/35 (a)		500,000		486,521
SBA Tower Trust, Series 2014-2A, Class C,
3.869% STEP 10/15/49 (a)		430,000		417,470
Sierra Timeshare Receivables Funding LLC
Series 2020-2A, Class C, 3.510% 7/20/37 (a)		34,224		31,903
Series 2018-1A, Class B, 4.036% 4/20/35		109,822		107,860
Store Master Funding I-VII, Series 2018-1A, Class A3
4.400% 10/20/48 (a)		502,233		477,102
Structured Asset Securities Corp. Mortgage Loan Trust, Series 2006-GEL1, Class M2, 1 mo. USD LIBOR + 1.200%
6.045% FRN 11/25/35 (a)		90,720		88,070
TAL Advantage VII LLC, Series 2020-1A, Class B
3.290% 9/20/45 (a)		663,750		582,445
Thrust Engine Leasing, Series 2021-1A, Class A
4.163% 7/15/40 (a)		554,866		446,921
TICP CLO XI Ltd., Series 2018-11A, Class A, 3 mo. USD LIBOR + 1.180%
5.988% FRN 10/20/31 (a)		400,000		395,222
TICP CLO XV Ltd., Series 2020-15A, Class A, 3 mo. USD LIBOR + 1.280%
6.088% FRN 4/20/33 (a)		1,000,000		986,321
Vantage Data Centers Issuer LLC, Series 2020-1A, Class A2
1.645% 9/15/45 (a)		675,000		607,695
VERDE CLO Ltd., Series 2019-1A, Class AR, 3 mo. USD LIBOR + 1.100%
5.892% FRN 4/15/32 (a)		500,000		490,504
Welk Resorts LLC, Series 2017-AA, Class B
3.410% 6/15/33 (a)		40,015		39,611
Willis Engine Structured Trust IV, Series 2018-A, Class A,
4.750% STEP 9/15/43 (a)		188,809		155,651
				25,496,122

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

	Principal Amount		Value
Student Loans Asset-Backed Securities — 5.4%
Access Group, Inc., Series 2015-1, Class B, 1 mo. USD LIBOR + 1.500%
6.345% FRN 7/25/58 (a)	$	140,000	$	128,236
College Avenue Student Loans LLC
Series 2021-A, Class B, 2.320% 7/25/51 (a)		767,550		675,009
Series 2017-A, Class B, 4.500% 11/26/46 (a)		276,779		246,827
Series 2018-A, Class A1, 1 mo. USD LIBOR + 1.200% 6.045% FRN 12/26/47 (a)		252,556		246,941
Series 2017-A, Class A1, 1 mo. USD LIBOR + 1.650% 6.495% FRN 11/26/46 (a)		183,574		183,110
College Loan Corp. Trust, Series 2005-2, Class B, 3 mo. USD LIBOR + .490%
5.320% FRN 1/15/37		98,535		82,935
Commonbond Student Loan Trust
Series 2018-AGS, Class C, 3.820% 2/25/44 (a)		16,411		14,492
Series 2018-BGS, Class C, 4.120% 9/25/45 (a)		17,651		16,112
Series 2018-CGS, Class C, 4.350% 2/25/46 (a)		8,415		7,746
Series 2017-AGS, Class C, 5.280% 5/25/41 (a)		38,224		36,089
DRB Prime Student Loan Trust, Series 2017-B, Class CFX
3.610% 8/25/42 (a)		172,101		165,089
ELFI Graduate Loan Program LLC, Series 2018-A, Class B
4.000% 8/25/42 (a)		49,231		45,578
Higher Education Funding I, Series 2004-1, Class B1,
4.161% FRN 1/01/44 (a) (d)		950,000		854,589
Laurel Road Prime Student Loan Trust, Series 2019-A, Class BFX
3.000% 10/25/48 (a)		256,646		246,030
Navient Private Education Refi Loan Trust, Series 2020-BA, Class B
2.770% 1/15/69 (a)		2,200,000		1,753,551
Nelnet Private Education Loan Trust, Series 2016-A, Class A1A, 1 mo. USD LIBOR + 1.750%
6.595% FRN 12/26/40 (a)		795		795
Nelnet Student Loan Trust, Series 2015-3A, Class B, 1 mo. USD LIBOR + 1.500%
6.345% FRN 6/25/54 (a)		130,000		119,448
Pennsylvania Higher Education Assistance Agency, Series 2006-2, Class B,
5.320% FRN 10/25/42 (d)		200,000		191,632
SLC Student Loan Trust, Series 2005-1, Class B, 3 mo. USD LIBOR + .200%
5.064% FRN 2/15/45		201,999		178,019
SLM Student Loan Trust
Series 2006-7, Class B, 3 mo. USD LIBOR + .200% 5.018% FRN 1/27/42		592,792		525,245
Series 2006-5, Class B, 3 mo. USD LIBOR + .210% 5.028% FRN 10/25/40		310,956		290,318
Series 2005-6, Class B, 3 mo. USD LIBOR + .290% 5.108% FRN 1/25/44		325,245		297,685
Series 2005-9, Class B, 3 mo. USD LIBOR + .300% 5.118% FRN 1/25/41		266,601		238,837
Series 2005-8, Class B, 3 mo. USD LIBOR + .310% 5.128% FRN 1/25/55		110,387		100,760
SMB Private Education Loan Trust
Series 2018-C, Class A2B, 1 mo. USD LIBOR + .750% 5.434% FRN 11/15/35 (a)		229,804		222,964
Series 2016-C, Class A2B, 1 mo. USD LIBOR + 1.100% 5.784% FRN 9/15/34 (a)		58,361		57,717
SoFi Professional Loan Program LLC, Series 2016-D, Class A1, 1 mo. USD LIBOR + .950%
5.795% FRN 1/25/39 (a)		5,408		5,396
				6,931,150
Whole Loan Collateral Collateralized Mortgage Obligations — 7.4%
Angel Oak Mortgage Trust
Series 2020-5, Class A3, 2.041% VRN 5/25/65 (a) (d)		82,554		75,325

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

	Principal Amount		Value
Series 2021-1, Class M1, 2.215% VRN 1/25/66 (a) (d)	$	314,000	$	204,485
Bank of America Mortgage Securities, Series 2004-G, Class 2A7,
3.954% VRN 8/25/34 (d)		1,165		1,108
BRAVO Residential Funding Trust, Series 2020-NQM1, Class A3,
2.406% VRN 5/25/60 (a) (d)		67,637		63,686
CIM Trust, Series 2019-INV3, Class A11, 1 mo. USD LIBOR + 1.000%
5.500% FRN 8/25/49 (a)		312,640		290,886
Credit Suisse Mortgage Capital Certificates, Series 2021-NQM4, Class M1,
2.472% VRN 5/25/66 (a) (d)		500,000		318,086
Credit Suisse Mortgage Trust, Series 2021-NQM2, Class A3,
1.538% VRN 2/25/66 (a) (d)		494,860		407,401
Deephaven Residential Mortgage Trust, Series 2021-1, Class A3,
1.128% VRN 5/25/65 (a) (d)		143,715		130,916
Flagstar Mortgage Trust, Series 2021-6INV, Class A18,
2.500% VRN 8/25/51 (a) (d)		571,982		447,643
Lakeview Trust, Series 2022-1, Class M3
4.585% 4/25/52 (a)		1,600,000		1,509,942
MFRA Trust, Series 2021-NQM2, Class A3,
1.472% VRN 11/25/64 (a) (d)		390,878		323,674
New Residential Mortgage Loan Trust, Series 2016-4A, Class A1,
3.750% VRN 11/25/56 (a) (d)		117,348		108,248
NewRez Warehouse Securitization Trust, Series 2021-1, Class C, 1 mo. USD LIBOR + 1.050%
5.895% FRN 5/25/55 (a)		803,400		788,280
NLT Trust
Series 2021-INV2, Class A3, 1.520% VRN 8/25/56 (a) (d)		694,188		572,489
Series 2021-INV2, Class M1, 2.569% VRN 8/25/56 (a) (d)		700,000		462,010
Onslow Bay Financial LLC
Series 2021-NQM3, Class A3, 1.362% VRN 7/25/61 (a) (d)		812,473		619,092
Series 2021-NQM1, Class M1, 2.219% VRN 2/25/66 (a) (d)		333,000		204,171
Series 2020-INV1, Class A21, 3.500% VRN 12/25/49 (a) (d)		144,152		126,357
PNMAC GMSR Issuer Trust, Series 2018-GT1, Class A, 1 mo. USD LIBOR + 2.850%
7.695% FRN 2/25/25 (a)		250,000		249,776
Shellpoint Co-Originator Trust, Series 2016-1, Class 2A3,
3.000% VRN 10/25/31 (a) (d)		190,570		175,854
Starwood Mortgage Residential Trust
Series 2021-3, Class A3, 1.518% VRN 6/25/56 (a) (d)		212,350		173,732
Series 2019-INV1, Class A3, 2.916% VRN 9/27/49 (a) (d)		532,984		506,291
Starwood Residential Mortgage Trust, Series 2021-1, Class A3,
1.528% VRN 5/25/65 (a) (d)		591,696		502,077
Verus Securitization Trust
Series 2021-5, Class A3, 1.373% VRN 9/25/66 (a) (d)		203,448		163,283
Series 2019-INV2, Class A3, 3.219% VRN 7/25/59 (a) (d)		276,524		265,732
Series 2019-INV3, Class M1, 3.279% VRN 11/25/59 (a) (d)		265,000		230,305
Series 2020-4, Class M1, 3.291% VRN 5/25/65 (a) (d)		548,000		472,383
				9,393,232
TOTAL NON-U.S. GOVERNMENT AGENCY OBLIGATIONS (Cost $58,108,647)				52,777,520
U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (e) — 1.7%
Pass-Through Securities — 0.0%
Federal National Mortgage Association Pool #775539 12 mo. USD LIBOR + 1.641% 3.391% 5/01/34		2,171		2,210

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

	Principal Amount		Value
Government National Mortgage Association
Pool #352022 7.000% 11/15/23	$	35	$	35
Pool #491089 7.000% 12/15/28		563		568
Pool #500928 7.000% 5/15/29		437		454
Pool #510083 7.000% 7/15/29		39		41
Pool #493723 7.000% 8/15/29		330		344
Pool #581417 7.000% 7/15/32		618		639
Government National Mortgage Association II
Pool #008746 1 year CMT + 1.500% 2.750% FRN 11/20/25		162		158
Pool #080136 1 year CMT + 1.500% 2.750% FRN 11/20/27		55		53
				4,502
Whole Loans — 1.7%
Federal Home Loan Mortgage Corp. Structured Agency Credit Risk Debt Notes
Series 2021-DNA6, Class M2, 30 day SOFR + 1.500% 6.060% FRN 10/25/41 (a)		1,046,000		996,336
Series 2021-DNA2, Class M2, 30 day SOFR + 2.300% 6.860% FRN 8/25/33 (a)		1,121,000		1,104,997
				2,101,333
TOTAL U.S. GOVERNMENT AGENCY OBLIGATIONS AND INSTRUMENTALITIES (Cost $2,171,112)				2,105,835
U.S. TREASURY OBLIGATIONS — 0.5%
U.S. Treasury Bonds & Notes — 0.5%
U.S. Treasury Note
1.750% 12/31/24		700,000		671,228
TOTAL U.S. TREASURY OBLIGATIONS (Cost $711,922)				671,228
TOTAL BONDS & NOTES (Cost $127,574,157)				117,125,489
	Number of Shares
MUTUAL FUNDS — 1.3%
Diversified Financial Services — 1.3%
State Street Navigator Securities Lending Government Money Market Portfolio (f)		1,590,103		1,590,103
TOTAL MUTUAL FUNDS (Cost $1,590,103)				1,590,103
TOTAL LONG-TERM INVESTMENTS (Cost $129,164,260)				118,715,592
	Principal Amount
SHORT-TERM INVESTMENTS — 7.1%
Commercial Paper — 4.7%
Amcor Finance USA, Inc.
5.933% 4/24/23 (a)	$	1,000,000		996,365
BAT International Finance PLC
6.041% 5/22/23 (a)		2,000,000		1,984,371

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

	Principal Amount		Value
Dollar General Corp.
5.549% 4/12/23 (a)	$	1,000,000	$	998,280
Tampa Electric Co.
5.091% 4/05/23 (a)		2,000,000		1,998,583
				5,977,599
Repurchase Agreement — 2.4%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (g)		3,093,335		3,093,335
TOTAL SHORT-TERM INVESTMENTS (Cost $9,070,123)				9,070,934
TOTAL INVESTMENTS — 100.3% (Cost $138,234,383) (h)				127,786,526
Other Assets/(Liabilities) — (0.3)%				(412,982)
NET ASSETS — 100.0%			$	127,373,544

Abbreviation Legend

CLO Collateralized Loan Obligation

FRN Floating Rate Note

STEP Step Up Bond

VRN Variable Rate Note

Notes to Portfolio of Investments

Percentages are stated as a percent of net assets.

(a) Security is exempt from registration under Regulation S or Rule 144A of the Securities Act of 1933. These securities are considered restricted and may be resold in transactions exempt from registration. At March 31, 2023, the aggregate market value of these securities amounted to $88,103,005 or 69.17% of net assets.

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

(c) Denotes all or a portion of security on loan. The total value of securities on loan as of March 31, 2023, was $1,557,319 or 1.22% of net assets. (Note 2).

(d) Certain variable rate securities are not based on a published reference rate and spread but are determined by the issuer or agent and are based on current market conditions. These securities do not indicate a reference rate and spread in their description above. The rates shown are the current interest rates at March 31, 2023.

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

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

(g) Maturity value of $3,093,706. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $3,155,211.

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

Futures contracts
	Expiration Date	Number of Contracts		Notional Amount		Value/ Net Unrealized Appreciation/ (Depreciation)
Short
U.S. Treasury Ultra 10 Year	6/21/23		18	$	(2,118,114)	$	(62,417)
U.S. Treasury Note 2 Year	6/30/23		224		(45,735,629)		(509,871)
U.S. Treasury Note 5 Year	6/30/23		211		(22,614,259)		(491,890)
						$	(1,064,178)

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

Centrally Cleared Credit Default Swaps - Buy Protection

Reference Obligation/Index

Rate Paid by Fund

Payment Frequency

Termination Date

Notional Amount

Value

Upfront Premium Paid/ (Received)

Unrealized Appreciation/ (Depreciation)

CDX.NA.IG Series 39†

1.000%

Quarterly

6/20/28

USD

10,000,000

$

(112,810)

$

(52,253)

$

(60,557)

Centrally Cleared Interest Rate Swaps
Paid by the Fund		Received by the Fund
Rate/ Reference	Frequency	Rate/ Reference		Frequency		Termination Date		Notional Amount		Value		Upfront Premium Paid/ (Received)		Unrealized Appreciation/ (Depreciation)
12-Month USD SOFR	Annually		Fixed 3.965%		Annually		6/23/25	USD	4,000,000	$	6,387	$	—	$	6,387
12-Month USD SOFR	Annually		Fixed 3.815%		Annually		6/30/25	USD	4,700,000		(4,038)		—		(4,038)
Fixed 3.293%	Annually		12-Month USD SOFR		Annually		6/23/33	USD	1,000,000		(10,673)		—		(10,673)
Fixed 3.223%	Annually		12-Month USD SOFR		Annually		6/30/33	USD	950,000		(4,875)		—		(4,875)
										$	(13,199)	$	—	$	(13,199)

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

Currency Legend

USD U.S. Dollar

MML Small Cap Equity Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 99.4%
COMMON STOCK — 99.4%
Basic Materials — 1.7%
Iron & Steel — 0.8%
Commercial Metals Co.		18,228	$	891,349
Mining — 0.9%
Kaiser Aluminum Corp.		13,951		1,041,163
				1,932,512
Communications — 1.8%
Internet — 1.8%
Ziff Davis, Inc. (a)		26,388		2,059,583
Consumer, Cyclical — 15.3%
Apparel — 1.5%
Capri Holdings Ltd. (a)		19,309		907,523
Steven Madden Ltd.		22,083		794,988
				1,702,511
Auto Parts & Equipment — 3.7%
Allison Transmission Holdings, Inc.		28,091		1,270,837
Dorman Products, Inc. (a)		16,577		1,429,932
Visteon Corp. (a)		9,891		1,551,205
				4,251,974
Home Builders — 0.7%
KB Home		21,112		848,280
Home Furnishing — 0.6%
Tempur Sealy International, Inc.		18,458		728,907
Leisure Time — 0.6%
Topgolf Callaway Brands Corp. (a)		33,511		724,508
Lodging — 1.0%
Boyd Gaming Corp.		18,360		1,177,243
Retail — 7.2%
AutoNation, Inc. (a)		19,510		2,621,364
BJ's Wholesale Club Holdings, Inc. (a)		27,245		2,072,527
Foot Locker, Inc.		26,575		1,054,762
Murphy USA, Inc.		3,283		847,178

MML Small Cap Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Texas Roadhouse, Inc.		16,519	$	1,785,043
				8,380,874
				17,814,297
Consumer, Non-cyclical — 21.2%
Beverages — 0.8%
Coca-Cola Consolidated, Inc.		1,721		920,873
Biotechnology — 3.7%
ADMA Biologics, Inc. (a)		189,872		628,476
Avid Bioservices, Inc. (a)		35,481		665,624
Guardant Health, Inc. (a)		26,493		620,996
Intra-Cellular Therapies, Inc. (a)		18,144		982,498
IVERIC bio, Inc. (a)		23,474		571,122
TransMedics Group, Inc. (a)		11,062		837,725
				4,306,441
Commercial Services — 3.0%
ABM Industries, Inc.		8,611		386,979
ASGN, Inc. (a)		18,003		1,488,308
Korn Ferry		31,222		1,615,426
				3,490,713
Food — 0.8%
Lancaster Colony Corp.		4,317		875,833
Health Care – Products — 3.2%
AtriCure, Inc. (a)		26,507		1,098,715
BioLife Solutions, Inc. (a)		27,400		595,950
Inspire Medical Systems, Inc. (a)		8,609		2,015,109
				3,709,774
Health Care – Services — 5.1%
Acadia Healthcare Co., Inc. (a)		29,302		2,117,069
Addus HomeCare Corp. (a)		12,354		1,318,913
Encompass Health Corp.		16,677		902,226
Tenet Healthcare Corp. (a)		26,767		1,590,495
				5,928,703
Pharmaceuticals — 4.6%
BellRing Brands, Inc. (a)		45,294		1,539,996
Collegium Pharmaceutical, Inc. (a)		35,167		843,656
Option Care Health, Inc. (a)		36,986		1,175,045
Prometheus Biosciences, Inc. (a)		7,888		846,540
Reata Pharmaceuticals, Inc. Class A (a)		10,930		993,756
				5,398,993
				24,631,330
Energy — 4.6%
Oil & Gas — 3.2%
Chesapeake Energy Corp. (b)		19,428		1,477,305
CNX Resources Corp. (a)		75,442		1,208,581

MML Small Cap Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Helmerich & Payne, Inc.		27,493	$	982,874
				3,668,760
Oil & Gas Services — 0.9%
Nov, Inc.		58,178		1,076,875
Pipelines — 0.5%
Equitrans Midstream Corp.		97,523		563,683
				5,309,318
Financial — 16.9%
Banks — 3.8%
The Bank of NT Butterfield & Son Ltd.		20,075		542,025
Cathay General Bancorp		29,847		1,030,319
Columbia Banking System, Inc.		52,387		1,122,130
Heritage Financial Corp.		34,035		728,349
Webster Financial Corp.		23,639		931,849
				4,354,672
Diversified Financial Services — 3.6%
Federated Hermes, Inc.		32,364		1,299,091
Focus Financial Partners, Inc. Class A (a)		18,908		980,758
Stifel Financial Corp.		33,016		1,950,915
				4,230,764
Insurance — 1.3%
Definity Financial Corp.		58,781		1,534,004
Real Estate Investment Trusts (REITS) — 5.3%
DiamondRock Hospitality Co.		175,724		1,428,636
Four Corners Property Trust, Inc.		73,537		1,975,204
National Storage Affiliates Trust		40,818		1,705,376
Outfront Media, Inc.		64,223		1,042,339
				6,151,555
Savings & Loans — 2.9%
Berkshire Hills Bancorp, Inc.		35,793		896,972
OceanFirst Financial Corp.		42,470		784,846
Pacific Premier Bancorp, Inc.		44,220		1,062,164
WSFS Financial Corp.		16,598		624,251
				3,368,233
				19,639,228
Industrial — 22.2%
Aerospace & Defense — 1.8%
Curtiss-Wright Corp.		12,138		2,139,444
Building Materials — 1.5%
Summit Materials, Inc. Class A (a)		61,378		1,748,659
Electrical Components & Equipment — 1.0%
Belden, Inc.		13,634		1,183,022

MML Small Cap Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Electronics — 3.7%
Atkore, Inc. (a)		15,426	$	2,167,044
Itron, Inc. (a)		17,928		994,108
Vishay Intertechnology, Inc.		49,936		1,129,552
				4,290,704
Engineering & Construction — 1.7%
TopBuild Corp. (a)		9,341		1,944,236
Environmental Controls — 2.6%
Casella Waste Systems, Inc. Class A (a)		16,679		1,378,686
Evoqua Water Technologies Corp. (a)		33,935		1,687,248
				3,065,934
Hand & Machine Tools — 1.2%
Regal Rexnord Corp.		10,039		1,412,789
Machinery – Construction & Mining — 0.9%
BWX Technologies, Inc.		16,524		1,041,673
Machinery – Diversified — 1.8%
Esab Corp.		14,220		839,975
Zurn Elkay Water Solutions Corp.		56,413		1,204,982
				2,044,957
Metal Fabricate & Hardware — 1.4%
Valmont Industries, Inc.		5,149		1,643,973
Miscellaneous - Manufacturing — 1.5%
EnPro Industries, Inc.		16,242		1,687,381
Packaging & Containers — 1.2%
Silgan Holdings, Inc.		26,804		1,438,571
Transportation — 1.9%
CryoPort, Inc. (a) (b)		29,114		698,736
Hub Group, Inc. Class A (a)		18,011		1,511,843
				2,210,579
				25,851,922
Technology — 13.3%
Computers — 3.7%
CACI International, Inc. Class A (a)		5,756		1,705,388
Endava PLC Sponsored ADR (a)		7,600		510,568
KBR, Inc.		37,543		2,066,742
				4,282,698
Semiconductors — 3.8%
Allegro MicroSystems, Inc. (a)		29,678		1,424,247
Ambarella, Inc. (a)		11,683		904,498
MACOM Technology Solutions Holdings, Inc. (a)		16,634		1,178,353
MKS Instruments, Inc.		10,675		946,018
				4,453,116

MML Small Cap Equity Fund —  Portfolio of Investments (Continued)

	Number of Shares		Value
Software — 5.8%
Consensus Cloud Solutions, Inc. (a)		13,483	$	459,636
Envestnet, Inc. (a)		17,932		1,052,070
Gitlab, Inc. Class A (a)		26,548		910,331
HashiCorp, Inc. Class A (a)		19,465		570,130
Paycor HCM, Inc. (a) (b)		62,900		1,668,108
Progress Software Corp.		18,295		1,051,048
Sprout Social, Inc. Class A (a)		16,523		1,005,920
				6,717,243
				15,453,057
Utilities — 2.4%
Gas — 2.4%
National Fuel Gas Co.		27,199		1,570,470
Northwest Natural Holding Co.		26,944		1,281,457
				2,851,927
				2,851,927
TOTAL COMMON STOCK (Cost $81,237,160)				115,543,174
TOTAL EQUITIES (Cost $81,237,160)				115,543,174
TOTAL LONG-TERM INVESTMENTS (Cost $81,237,160)				115,543,174
	Principal Amount
SHORT-TERM INVESTMENTS — 0.9%
Repurchase Agreement — 0.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (c)	$	1,074,067		1,074,067
TOTAL SHORT-TERM INVESTMENTS (Cost $1,074,067)				1,074,067
TOTAL INVESTMENTS — 100.3% (Cost $82,311,227) (d)				116,617,241
Other Assets/(Liabilities) — (0.3)%				(401,949)
NET ASSETS — 100.0%			$	116,215,292

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 March 31, 2023, was $1,529,354 or 1.32% of net assets. The Fund received $1,560,999 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 $1,074,196. Collateralized by U.S. Government Agency obligations with a rate of 3.875%, maturity date of 3/31/25, and an aggregate market value, including accrued interest, of $1,095,642.

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

MML Strategic Emerging Markets Fund —  Portfolio of Investments

March 31, 2023 (Unaudited)

	Number of Shares		Value
EQUITIES — 96.9%
COMMON STOCK — 96.5%
Australia — 0.8%
Glencore PLC		68,510	$	394,077
Brazil — 4.9%
Ambev SA		354,012		1,000,896
B3 SA - Brasil Bolsa Balcao		93,300		190,523
Lojas Renner SA		28,736		93,945
NU Holdings Ltd/Cayman Islands Class A (a)		107,353		511,000
Vale SA Sponsored ADR		29,175		460,381
WEG SA		28,884		231,086
				2,487,831
Chile — 0.6%
Antofagasta PLC		3,160		61,834
Banco Santander Chile		5,712,831		253,340
				315,174
China — 28.0%
BeiGene Ltd. ADR (a)		2,321		500,245
Brii Biosciences Ltd. (a)		1,500		829
H World Group Ltd. (a)		4,200		20,526
H World Group Ltd. ADR (a)		51,119		2,503,809
Meituan Class B (a) (b) (g)		23,731		431,039
MicroTech Medical Hangzhou Co. Ltd. Class H (a) (b)		14,500		13,817
NetEase, Inc. ADR		19,525		1,726,791
New Horizon Health Ltd. (a) (b)		28,000		97,568
Silergy Corp.		12,000		192,666
Tencent Holdings Ltd.		36,309		1,774,179
Wuxi Biologics Cayman, Inc. (a) (b)		73,000		451,524
Yum China Holdings, Inc.		59,971		3,801,562
Zai Lab Ltd. ADR (a)		8,901		296,047
ZTO Express Cayman, Inc.		5,337		152,964
ZTO Express Cayman, Inc. ADR		79,276		2,272,050
				14,235,616
France — 6.5%
L'Oreal SA		241		107,824
Pernod Ricard SA		11,784		2,670,016
TotalEnergies SE		8,566		505,418
				3,283,258
Hong Kong — 1.5%
AIA Group Ltd.		55,800		586,312
Hongkong Land Holdings Ltd.		36,000		158,544
				744,856

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

	Number of Shares		Value
India — 18.8%
Havells India Ltd.		13,273	$	192,563
Housing Development Finance Corp. Ltd.		112,168		3,586,577
Infosys Ltd.		13,862		241,665
Kotak Mahindra Bank Ltd.		120,498		2,543,563
Oberoi Realty Ltd.		35,554		364,902
Tata Consultancy Services Ltd.		60,988		2,387,228
Zee Entertainment Enterprises Ltd.		92,735		240,002
				9,556,500
Indonesia — 0.8%
Bank Central Asia Tbk PT		663,800		387,858
Italy — 2.0%
PRADA SpA		142,700		1,016,328
Japan — 0.5%
Daiichi Sankyo Co. Ltd.		7,700		281,024
Mexico — 10.6%
America Movil SAB de CV ADR		45,321		954,007
Fomento Economico Mexicano SAB de CV		76,602		729,249
Grupo Mexico SAB de CV Series B		541,650		2,562,167
Wal-Mart de Mexico SAB de CV		290,330		1,160,031
				5,405,454
Peru — 0.9%
Credicorp Ltd.		3,375		446,816
Philippines — 1.3%
SM Investments Corp.		41,335		677,020
Republic of Korea — 7.3%
LG Chem Ltd.		3,096		1,709,665
LG H&H Co. Ltd.		316		146,301
Samsung Biologics Co. Ltd. (a) (b)		1,500		911,992
Samsung Electronics Co. Ltd.		19,194		951,798
				3,719,756
Russia — 0.0%
Novatek PJSC (a) (c) (d)		9,727		—
Polyus PJSC GDR (a) (c) (d)		1,566		—
Polyus PJSC GDR (a) (c) (d)		40		—
Sberbank of Russia PJSC (a) (c) (d)		7,525		—
Yandex N.V. Class A (a) (c) (d)		131		—
				—
South Africa — 0.5%
FirstRand Ltd. (e)		80,342		272,812
Switzerland — 3.6%
Cie Financiere Richemont SA Registered Class A		11,332		1,816,530
Taiwan — 7.6%
MediaTek, Inc.		10,000		261,035

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

	Number of Shares		Value
Taiwan Semiconductor Manufacturing Co. Ltd.		204,000	$	3,614,038
				3,875,073
United Kingdom — 0.3%
AstraZeneca PLC Sponsored ADR		2,210		153,396
TOTAL COMMON STOCK (Cost $45,910,410)				49,069,379
PREFERRED STOCK — 0.4%
Brazil — 0.4%
Banco Bradesco SA 4.052%
		75,745		196,818
TOTAL PREFERRED STOCK (Cost $291,018)				196,818
TOTAL EQUITIES (Cost $46,201,428)				49,266,197
WARRANTS — 0.1%
Switzerland — 0.1%
Cie Financiere Richemont SA, Expires 11/22/23, Strike 67.00 (a)		22,580		28,381
TOTAL WARRANTS (Cost $0)				28,381
TOTAL LONG-TERM INVESTMENTS (Cost $46,201,428)				49,294,578
	Principal Amount
SHORT-TERM INVESTMENTS — 2.9%
Repurchase Agreement — 2.9%
Fixed Income Clearing Corp., Repurchase Agreement, dated 3/31/23, 1.440%, due 4/03/23 (f)	$	1,491,407		1,491,407
TOTAL SHORT-TERM INVESTMENTS (Cost $1,491,407)				1,491,407
TOTAL INVESTMENTS — 99.9% (Cost $47,692,835) (h)				50,785,985
Other Assets/(Liabilities) — 0.1%				36,589
NET ASSETS — 100.0%			$	50,822,574

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 March 31, 2023, the aggregate market value of these securities amounted to $1,905,940 or 3.75% of net assets.

(c) This security is fair valued in good faith in accordance with procedures approved by the Board of Trustees. At March 31, 2023, these securities amounted to a value of $0 or 0.00% of net assets.

(d) Investment is valued using significant unobservable inputs.

(e) Denotes all or a portion of security on loan. The total value of securities on loan as of March 31, 2023, was $222,732 or 0.44% of net assets. The Fund received $234,590 of non-cash collateral (U.S. Treasury and/or Agency obligations) related to securities lending activity. This amount is not reflected on the Portfolio of Investments. (Note 2).

(f) Maturity value of $1,491,586. Collateralized by U.S. Government Agency obligations with a rate of 4.815%, maturity date of 10/31/24, and an aggregate market value, including accrued interest, of $1,521,326.

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

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

Notes to Portfolio of Investments (Unaudited)

1. The Funds

MML Series Investment Fund II (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 February 8, 2005, which was amended and restated as of February 28, 2005 and December 15, 2011, as it may be further amended from time to time. The Trust consists of 13 series, including the following 12 series listed below (each individually referred to as a “Fund” or collectively as the “Funds”):

MML Blend Fund (“Blend Fund”)

MML Dynamic Bond Fund (“Dynamic Bond Fund”)

MML Equity Fund (“Equity Fund”)

MML Equity Rotation Fund (“Equity Rotation Fund”)

MML High Yield Fund (“High Yield Fund”)

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

MML iShares^® 60/40 Allocation Fund (“iShares 60/40 Allocation Fund”)

MML iShares^® 80/20 Allocation Fund (“iShares 80/20 Allocation Fund”)

MML Managed Bond Fund (“Managed Bond Fund”)

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

MML Small Cap Equity Fund (“Small Cap Equity Fund”)

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

The Trust makes shares of the Funds available for the investment of assets of various separate investment accounts established by Massachusetts Mutual Life Insurance Company (“MassMutual”) and by life insurance companies which are subsidiaries of MassMutual. Shares of the Trust are not offered to the general public. MassMutual, MML Bay State Life Insurance Company, C.M. Life Insurance Company, and the MML Conservative Allocation Fund, MML Balanced Allocation Fund, MML Moderate Allocation Fund, MML Growth Allocation Fund, and MML Aggressive Allocation Fund, which are “funds of funds” series of MML Series Investment Fund, another open-end management investment company sponsored by MassMutual, are the record owners of all of the outstanding shares of the Funds.

The Blend Fund, iShares 60/40 Allocation Fund, and iShares 80/20 Allocation Fund invest substantially all of their investable assets in shares of ETFs advised by an affiliate of the Funds' subadviser, BlackRock Investment Management, LLC (“Underlying ETFs”).

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.

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.

Notes to Portfolio of Investments (Unaudited) (Continued)

Investments in equity or debt issued by privately held companies or funds (“Private Company” or collectively, the “Private Companies”) and any other investments fair valued using significant unobservable inputs may be fair valued using one or a combination of, but not limited to, the following inputs:

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

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

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

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

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.

The Blend Fund, iShares 60/40 Allocation Fund, iShares 80/20 Allocation Fund, and Small Cap Equity Fund characterized all long-term investments at Level 1, and all short-term investments at Level 2, as of March 31, 2023. For each Fund noted in the preceding sentence, the level classification by major category of investments is the same as the category presentation in the Portfolio of Investments.

Notes to Portfolio of Investments (Unaudited) (Continued)

The following is the aggregate value by input level, as of March 31, 2023, for the remaining Funds' investments:

Dynamic Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Bank Loans	$	—		$	8,279,391		$	—	$	8,279,391
Corporate Debt		—			98,575,095			—		98,575,095
Non-U.S. Government Agency Obligations		—			29,081,889			—		29,081,889
Sovereign Debt Obligations		—			16,861,602			—		16,861,602
U.S. Government Agency Obligations and Instrumentalities		—			78,539,378			—		78,539,378
U.S. Treasury Obligations		—			3,009,764			—		3,009,764
Mutual Funds		2,107,468			—			—		2,107,468
Purchased Options		225,235			—			—		225,235
Short-Term Investments		—			24,640,536			—		24,640,536
Total Investments	$	2,332,703		$	258,987,655		$	—	$	261,320,358
Liability Investments
Unfunded Bank Loan Commitments**	$	—		$	(2,268	)	$	—	$	(2,268	)
Asset Derivatives
Forward Contracts	$	—		$	124,190		$	—	$	124,190
Futures Contracts		2,295,362			—			—		2,295,362
Swap Agreements		—			5,693,252			—		5,693,252
Total	$	2,295,362		$	5,817,442		$	—	$	8,112,804
Liability Derivatives
Forward Contracts	$	—		$	(538,316	)	$	—	$	(538,316	)
Futures Contracts		(1,068,027	)		—			—		(1,068,027	)
Swap Agreements		—			(34,009	)		—		(34,009	)
Written Options		(346,350	)		—			—		(346,350	)
Total	$	(1,414,377	)	$	(572,325	)	$	—	$	(1,986,702	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Equity Fund

Asset Investments	Level 1		Level 2			Level 3		Total
Common Stock	$	768,935,404	$	1,566,890	*	$	—	$	770,502,294
Mutual Funds		10,170,968		—			—		10,170,968
Short-Term Investments		2,498		4,752,386			—		4,754,884
Total Investments	$	779,108,870	$	6,319,276		$	—	$	785,428,146

Notes to Portfolio of Investments (Unaudited) (Continued)

Equity Rotation Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Common Stock	$	48,643,647	$	—	$	4,915	$	48,648,562
Mutual Funds		27,928		—		—		27,928
Total Investments	$	48,671,575	$	—	$	4,915	$	48,676,490

Notes to Portfolio of Investments (Unaudited) (Continued)

High Yield Fund

Asset Investments	Level 1		Level 2		Level 3		Total
Bank Loans	$	—	$	1,243,616	$	—	$	1,243,616
Corporate Debt		—		50,070,898		—		50,070,898
Mutual Funds		2,865,458		—		—		2,865,458
Short-Term Investments		—		2,647,764		—		2,647,764
Total Investments	$	2,865,458	$	53,962,278	$	—	$	56,827,736

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	$	—		$	105,907,567		$	—	$	105,907,567
U.S. Government Agency Obligations and Instrumentalities		—			22,084,412			—		22,084,412
U.S. Treasury Obligations		—			52,362,297			—		52,362,297
Short-Term Investments		—			25,452,458			—		25,452,458
Total Investments	$	—		$	205,806,734		$	—	$	205,806,734
Asset Derivatives
Swap Agreements	$	—		$	3,905,569		$	—	$	3,905,569
Liability Derivatives
Futures Contracts	$	(630,883	)	$	—		$	—	$	(630,883	)
Swap Agreements		—			(457,915	)		—		(457,915	)
Total	$	(630,883	)	$	(457,915	)	$	—	$	(1,088,798	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Managed Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Corporate Debt	$	—		$	283,422,163		$	—	$	283,422,163
Municipal Obligations		—			2,102,289			—		2,102,289
Non-U.S. Government Agency Obligations		—			207,632,998			—		207,632,998
Sovereign Debt Obligations		—			3,156,515			—		3,156,515
U.S. Government Agency Obligations and Instrumentalities		—			226,982,277			—		226,982,277
U.S. Treasury Obligations		—			13,846,134			—		13,846,134
Mutual Funds		3,699,238			—			—		3,699,238
Short-Term Investments		—			123,955,345			—		123,955,345
Total Investments	$	3,699,238		$	861,097,721		$	—	$	864,796,959
Asset Derivatives
Futures Contracts	$	2,599,569		$	—		$	—	$	2,599,569
Swap Agreements		—			79,843			—		79,843
Total	$	2,599,569		$	79,843		$	—	$	2,679,412
Liability Derivatives
Futures Contracts	$	(625,109	)	$	—		$	—	$	(625,109	)
Swap Agreements		—			(1,457,934	)		—		(1,457,934	)
Total	$	(625,109	)	$	(1,457,934	)	$	—	$	(2,083,043	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Short-Duration Bond Fund

Asset Investments	Level 1			Level 2			Level 3		Total
Corporate Debt	$	—		$	61,570,906		$	—	$	61,570,906
Non-U.S. Government Agency Obligations		—			52,777,520			—		52,777,520
U.S. Government Agency Obligations and Instrumentalities		—			2,105,835			—		2,105,835
U.S. Treasury Obligations		—			671,228			—		671,228
Mutual Funds		1,590,103			—			—		1,590,103
Short-Term Investments		—			9,070,934			—		9,070,934
Total Investments	$	1,590,103		$	126,196,423		$	—	$	127,786,526
Asset Derivatives
Swap Agreements	$	—		$	6,387		$	—	$	6,387
Liability Derivatives
Futures Contracts	$	(1,064,178	)	$	—		$	—	$	(1,064,178	)
Swap Agreements		—			(132,396	)		—		(132,396	)
Total	$	(1,064,178	)	$	(132,396	)	$	—	$	(1,196,574	)

Notes to Portfolio of Investments (Unaudited) (Continued)

Strategic Emerging Markets Fund

Asset Investments	Level 1		Level 2		Level 3			Total
Common Stock*
Australia	$	—	$	394,077	$	—		$	394,077
Brazil		2,487,831		—		—			2,487,831
Chile		253,340		61,834		—			315,174
China		11,100,504		3,135,112		—			14,235,616
France		—		3,283,258		—			3,283,258
Hong Kong		—		744,856		—			744,856
India		—		9,556,500		—			9,556,500
Indonesia		—		387,858		—			387,858
Italy		—		1,016,328		—			1,016,328
Japan		—		281,024		—			281,024
Mexico		5,405,454		—		—			5,405,454
Peru		446,816		—		—			446,816
Philippines		—		677,020		—			677,020
Republic of Korea		—		3,719,756		—			3,719,756
Russia		—		—		—	+		—
South Africa		—		272,812		—			272,812
Switzerland		—		1,816,530		—			1,816,530
Taiwan		—		3,875,073		—			3,875,073
United Kingdom		153,396		—		—			153,396
Preferred Stock*
Brazil		196,818		—		—			196,818
Warrants		28,381		—		—			28,381
Short-Term Investments		—		1,491,407		—			1,491,407
Total Investments	$	20,072,540	$	30,713,445	$	—		$	50,785,985

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

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

+ Represents a security at $0 value as of March 31, 2023.

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/Semiannual reports and Prospectus(es) and Statement(s) of Additional Information which can be found on the Securities and Exchange Commission's (“SEC”) 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 March 31, 2023, the Funds' collateral was equal to or greater than 100% of the market value of securities on loan, and all of the Funds’ cash collateral was invested in the State Street Navigator Securities Lending Government Money Market Portfolio.

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

Accounting for Investment Transactions

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

Notes to Portfolio of Investments (Unaudited) (Continued)

Foreign Currency Translation

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

Foreign Securities

The Strategic Emerging Markets Fund invests substantially all of its assets in foreign securities. The other Funds, except for the Blend Fund, iShares 60/40 Allocation Fund, and iShares 80/20 Allocation Fund, may also invest in foreign securities. In addition, certain Underlying ETFs may 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.

Federal Income Tax

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

Dividends and Distributions to Shareholders

Dividends from net investment income and distributions of any net realized capital gains of each Fund are declared and paid annually and at other times as may be required to satisfy tax or regulatory requirements.

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

Notes to Portfolio of Investments (Unaudited) (Continued)

3. Federal Income Tax Information

At March 31, 2023, the aggregate cost of investments and the unrealized appreciation/(depreciation) in the value of all investments owned by the Fund(s), as computed on a federal income tax basis, were as follows:

	Federal Income Tax Cost		Tax Basis Unrealized Appreciation		Tax Basis Unrealized (Depreciation)			Net Unrealized Appreciation/ (Depreciation)
Blend Fund	$	661,459,116	$	42,790,598	$	(42,267,538	)	$	523,060
Dynamic Bond Fund		280,985,791		1,726,739		(21,392,172	)		(19,665,433	)
Equity Fund		671,958,685		132,230,697		(18,761,236	)		113,469,461
Equity Rotation Fund		48,064,328		1,303,282		(691,120	)		612,162
High Yield Fund		63,003,786		463,076		(6,639,126	)		(6,176,050	)
Inflation-Protected and Income Fund		213,948,457		1,201,797		(9,343,520	)		(8,141,723	)
iShares 60/40 Allocation Fund		31,653,861		–		(2,189,456	)		(2,189,456	)
iShares 80/20 Allocation Fund		47,845,827		–		(2,271,315	)		(2,271,315	)
Managed Bond Fund		943,769,397		4,505,053		(83,477,491	)		(78,972,438	)
Short-Duration Bond Fund		138,234,383		842,691		(11,290,548	)		(10,447,857	)
Small Cap Equity Fund		82,311,227		37,579,200		(3,273,186	)		34,306,014
Strategic Emerging Markets Fund		47,692,835		6,138,343		(3,045,193	)		3,093,150

4. New Accounting Pronouncements

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

Notes to Portfolio of Investments (Unaudited) (Continued)

5. Coronavirus (COVID-19) Pandemic

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

6. Russia-Ukraine War

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