MML Series Investment Fund and MML Series Investment Fund II Portfolio Holdings As of 6/30/2021 Fund Name Asset Class Security Name Base Market Value Shares/Par Value Percent of Fund Interest Rate Maturity Date MML Aggressive Allocation Fund EQUITY MML GLOBAL FD 19797970.79 1267475.723 11.54079 0 MML Aggressive Allocation Fund EQUITY MML FOCUSED EQUITY FUND 16027898.53 2016087.866 9.34311 0 MML Aggressive Allocation Fund EQUITY MML MID CAP GROWTH FD 12519472.6 632616.099 7.29795 0 MML Aggressive Allocation Fund EQUITY MML BLUE CHIP GROWTH FD 11389485.44 493906.567 6.639249 0 MML Aggressive Allocation Fund EQUITY MML INCOME AND GROWTH FD 11088381.27 927122.18 6.463727 0 MML Aggressive Allocation Fund EQUITY MML EQUITY INCOME FD 10378462.5 852790.674 6.049896 0 MML Aggressive Allocation Fund EQUITY MML FUNDAMENTAL VALUE FUND 10262960.65 729421.51 5.982566 0 MML Aggressive Allocation Fund EQUITY MML INTERNATIONAL EQUITY FUND 8761542.43 773304.716 5.107348 0 MML Aggressive Allocation Fund EQUITY MML MID CAP VALUE FD 8723106.33 710929.611 5.084942 0 MML Aggressive Allocation Fund EQUITY MML FUNDAMENTAL GROWTH FUND 8475444.38 679666.751 4.940573 0 MML Aggressive Allocation Fund EQUITY MML FOREIGN FD 7841520.67 705807.441 4.571041 0 MML Aggressive Allocation Fund EQUITY MML STRG EMERGING MARKETS FUND 7675189.26 496776.004 4.474082 0 MML Aggressive Allocation Fund EQUITY MML TOTAL RETURN BOND FUND 5286620.8 474136.395 3.081719 0 MML Aggressive Allocation Fund EQUITY MML SMALL COMPANY VALUE FUND 4157279.35 233949.316 2.423394 0 MML Aggressive Allocation Fund EQUITY MML LARGE CAP GROWTH FD 3929630.48 247302.107 2.290691 0 MML Aggressive Allocation Fund EQUITY MML INFLATION PROTECTED BD FD 3894067.1 333681.842 2.26996 0 MML Aggressive Allocation Fund EQUITY MML MANAGED BOND FUND 3461807.03 253356.393 2.017984 0 MML Aggressive Allocation Fund EQUITY MML SMALL/MID CAP VALUE 2904542.84 209411.885 1.693139 0 MML Aggressive Allocation Fund EQUITY MML SHORT DURATION BOND FUND 2629618.92 261914.235 1.532878 0 MML Aggressive Allocation Fund EQUITY MML SMALL CAP GROWTH EQUITY FD 2430245.4 133819.23 1.416658 0 MML Aggressive Allocation Fund EQUITY INVESCO VI GLOBAL FUND 2154170.29 36994.166 1.255726 0 MML Aggressive Allocation Fund EQUITY INVESCO VI DISCOVERY MID CAP G 2103957.16 18005.624 1.226455 0 MML Aggressive Allocation Fund EQUITY MML HIGH YIELD FUND 1650920.55 154435.973 0.962368 0 MML Aggressive Allocation Fund EQUITY MML DYNAMIC BOND FUND 1467406.37 140690.927 0.855392 0 MML Aggressive Allocation Fund EQUITY INVESCO VI GLOBAL STRATEGIC IN 1283166.51 273014.151 0.747994 0 MML Aggressive Allocation Fund EQUITY MML SER INVT FD 796534.06 23862.614 0.464322 0 MML Aggressive Allocation Fund EQUITY INVESCO VI MAIN STREET FUND 270087.29 7772.296 0.157441 0 MML Aggressive Allocation Fund EQUITY INVESCO OPPENHEIMER VI INTERNA 186302.41 59904.312 0.108601 0 MML American Funds Core Allocation EQUITY AMER FDS INS BOND FD 319485346.6 28248041.26 33.372695 0 MML American Funds Core Allocation EQUITY AMER FDS INS GRWTH INC FD 265592698.3 4253566.596 27.743195 0 MML American Funds Core Allocation EQUITY AMER FDS INS BLUE CHIP INC GRT 264195607.5 16050765.95 27.597258 0 MML American Funds Core Allocation EQUITY AMER FD INS INTERNATIONAL FD 108051923.6 4367498.934 11.286852 0 MML American Funds Growth Fund EQUITY AMERICAN FDS INS SER 283019475.2 2392590.035 100 0 MML American Funds International Fund EQUITY AMER FD INS INTERNATIONAL FD 62769879.61 2537181.876 100 0 MML Balanced Allocation Fund EQUITY MML MANAGED BOND FUND 80574444.49 5896934.882 16.61119 0 MML Balanced Allocation Fund EQUITY MML DYNAMIC BOND FUND 48247055.48 4625796.307 9.94659 0 MML Balanced Allocation Fund EQUITY MML TOTAL RETURN BOND FUND 48038140.52 4308353.41 9.903521 0 MML Balanced Allocation Fund EQUITY MML GLOBAL FD 25664354.06 1643044.434 5.290951 0 MML Balanced Allocation Fund EQUITY MML FOCUSED EQUITY FUND 24036596.84 3023471.3 4.955374 0 MML Balanced Allocation Fund EQUITY MML FUNDAMENTAL GROWTH FUND 23901828.04 1916746.435 4.92759 0 MML Balanced Allocation Fund EQUITY MML SHORT DURATION BOND FUND 22361734.93 2227264.435 4.610085 0 MML Balanced Allocation Fund EQUITY MML BLUE CHIP GROWTH FD 21068425.34 913635.097 4.343457 0 MML Balanced Allocation Fund EQUITY MML INFLATION PROTECTED BD FD 19859373.15 1701745.771 4.094199 0 MML Balanced Allocation Fund EQUITY MML EQUITY INCOME FD 19459204.6 1598948.611 4.011701 0 MML Balanced Allocation Fund EQUITY MML MID CAP GROWTH FD 19084127.63 964331.866 3.934375 0 MML Balanced Allocation Fund EQUITY MML INCOME AND GROWTH FD 18242211.45 1525268.516 3.760806 0 MML Balanced Allocation Fund EQUITY MML FUNDAMENTAL VALUE FUND 18045275.54 1282535.575 3.720206 0 MML Balanced Allocation Fund EQUITY MML MID CAP VALUE FD 15705103.07 1279959.5 3.237757 0 MML Balanced Allocation Fund EQUITY MML INTERNATIONAL EQUITY FUND 15144141.05 1336640.869 3.122109 0 MML Balanced Allocation Fund EQUITY MML FOREIGN FD 13834457.97 1245225.74 2.852105 0 MML Balanced Allocation Fund EQUITY MML HIGH YIELD FUND 10587468.66 990408.668 2.182708 0 MML Balanced Allocation Fund EQUITY INVESCO VI GLOBAL STRATEGIC IN 10555954.35 2245947.735 2.176211 0 MML Balanced Allocation Fund EQUITY MML LARGE CAP GROWTH FD 10284390.46 647224.069 2.120225 0 MML Balanced Allocation Fund EQUITY MML SMALL COMPANY VALUE FUND 5200523.26 292657.471 1.072137 0 MML Balanced Allocation Fund EQUITY MML SMALL/MID CAP VALUE 5041453.55 363478.987 1.039344 0 MML Balanced Allocation Fund EQUITY MML STRG EMERGING MARKETS FUND 4515148.57 292242.626 0.930841 0 MML Balanced Allocation Fund EQUITY MML SMALL CAP GROWTH EQUITY FD 1798401.84 99027.345 0.370758 0 MML Balanced Allocation Fund EQUITY MML SER INVT FD 1495357.71 44798.014 0.308282 0 MML Balanced Allocation Fund EQUITY INVESCO VI GLOBAL FUND 695086.33 11936.911 0.143299 0 MML Balanced Allocation Fund EQUITY INVESCO OPPENHEIMER VI INTERNA 565786.65 181924.968 0.116642 0 MML Balanced Allocation Fund EQUITY INVESCO VI MAIN STREET FUND 545337.45 15693.164 0.112427 0 MML Balanced Allocation Fund EQUITY INVESCO VI DISCOVERY MID CAP G 509860.95 4363.38 0.105113 0 Fund Name Asset Class Security Name Base Market Value Shares/Par Value Percent of Fund Interest Rate Maturity Date MML Blend Fund EQUITY ISHARES CORE S+P TOTAL US STOC 248291528.4 2514090 30.212485 0 MML Blend Fund EQUITY ISHARES CORE S+P 500 ETF 226519259 526887 27.563202 0 MML Blend Fund EQUITY ISHARES CORE U.S. AGGREGATE BO 129666326.3 1124307 15.777993 0 MML Blend Fund EQUITY ISHARES CORE TOTAL USD BOND MA 129655106.4 2423913 15.776627 0 MML Blend Fund EQUITY ISHARES 5 10 YEAR INVESTMENT G 31040889.56 512903 3.777102 0 MML Blend Fund EQUITY ISHARES IBOXX HIGH YIELD CORPO 31022214.6 352365 3.774829 0 MML Blend Fund EQUITY ISHARES CORE S+P MID CAP ETF 17599665.16 65492 2.141554 0 MML Blend Fund EQUITY ISHARES CORE S+P SMALL CAP ETF 7918881.18 70091 0.963581 0 MML Blend Fund CASH EQUIVALENT FIXED INC CLEARING CORP.REPO 103773.55 103773.55 0.012627 0 7/1/2021 MML Blue Chip Growth Fund EQUITY AMAZON.COM INC 61843756.32 17977 10.898125 0 MML Blue Chip Growth Fund EQUITY FACEBOOK INC CLASS A 41683474.8 119880 7.345474 0 MML Blue Chip Growth Fund EQUITY ALPHABET INC CL C 38978288.64 15552 6.868766 0 MML Blue Chip Growth Fund EQUITY MICROSOFT CORP 32766709.5 120955 5.774159 0 MML Blue Chip Growth Fund EQUITY APPLE INC 25124353.28 183443 4.427421 0 MML Blue Chip Growth Fund EQUITY VISA INC CLASS A SHARES 18070077.24 77282 3.184314 0 MML Blue Chip Growth Fund EQUITY INTUIT INC 15492803.19 31607 2.730146 0 MML Blue Chip Growth Fund EQUITY PAYPAL HOLDINGS INC 15042699.84 51608 2.650829 0 MML Blue Chip Growth Fund EQUITY SERVICENOW INC 11997226.05 21831 2.114155 0 MML Blue Chip Growth Fund EQUITY MASTERCARD INC A 11894267.11 32579 2.096011 0 MML Blue Chip Growth Fund EQUITY SNAP INC A 11205146.02 164443 1.974574 0 MML Blue Chip Growth Fund EQUITY SEA LTD ADR 11117181 40485 1.959073 0 MML Blue Chip Growth Fund EQUITY TENCENT HOLDINGS LTD 10560766.81 140400 1.861021 0 MML Blue Chip Growth Fund EQUITY UNITEDHEALTH GROUP INC 10544386.08 26332 1.858135 0 MML Blue Chip Growth Fund EQUITY SALESFORCE.COM INC 10290606.56 42128 1.813414 0 MML Blue Chip Growth Fund EQUITY NETFLIX INC 9868547.43 18683 1.739038 0 MML Blue Chip Growth Fund EQUITY GLOBAL PAYMENTS INC 9791650.94 52211 1.725488 0 MML Blue Chip Growth Fund EQUITY NVIDIA CORP 8713089 10890 1.535423 0 MML Blue Chip Growth Fund EQUITY ALPHABET INC CL A 8656145.55 3545 1.525389 0 MML Blue Chip Growth Fund EQUITY INTUITIVE SURGICAL INC 8498393.24 9241 1.497589 0 MML Blue Chip Growth Fund EQUITY STRYKER CORP 6708566.17 25829 1.182186 0 MML Blue Chip Growth Fund EQUITY DANAHER CORP 6166376.08 22978 1.086641 0 MML Blue Chip Growth Fund EQUITY GOLDMAN SACHS GROUP INC 6133963.86 16162 1.080929 0 MML Blue Chip Growth Fund EQUITY MATCH GROUP INC 5978343.75 37075 1.053505 0 MML Blue Chip Growth Fund EQUITY CIGNA CORP 5730930.18 24174 1.009906 0 MML Blue Chip Growth Fund EQUITY PINTEREST INC CLASS A 5018456.75 63565 0.884354 0 MML Blue Chip Growth Fund EQUITY ZOOM VIDEO COMMUNICATIONS A 4981076.1 12870 0.877767 0 MML Blue Chip Growth Fund EQUITY SYNOPSYS INC 4839287.13 17547 0.852781 0 MML Blue Chip Growth Fund EQUITY S+P GLOBAL INC 4716480.95 11491 0.83114 0 MML Blue Chip Growth Fund EQUITY ASML HOLDING NV NY REG SHS 4569215.76 6614 0.805189 0 MML Blue Chip Growth Fund EQUITY ROSS STORES INC 4549808 36692 0.801769 0 MML Blue Chip Growth Fund EQUITY FISERV INC 4444272.42 41578 0.783171 0 MML Blue Chip Growth Fund EQUITY ADVANCED MICRO DEVICES 4372629.36 46552 0.770546