NPORT-P false 0000783740 XXXXXXXX S000045806 C000142779 C000142777 C000142776 C000142780 C000142778 C000142775 C000142782 C000195688 C000142781 MFS SERIES TRUST X 811-04492 0000783740 5493001MUVNRNUPJY164 111 HUNTINGTON AVENUE BOSTON 02199 617-954-5000 MFS Managed Wealth Fund S000045806 5493001FM265HSCY4362 2026-05-31 2026-05-31 N 36736388.45 1155527.28 35580861.17 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 1014402.33000000 N Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 000000000 -38.00000000 NC USD -416862.66000000 -1.17159238504 N/A DE US N 1 Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 Short CME E-mini Russell 1000 Value Index Futures RVYM6 Index 2026-06-18 -4030087.34000000 USD -416862.66000000 N N N Exchange traded N/A 000000000 90.00000000 NC 40940.63000000 0.115063628742 N/A DE US N 2 BofA Securities, Inc. 549300HN4UKV1E2R3U73 Put Purchased STOXX EUROPE 600 PRICE INDEX SXXP Index 50.00000000 545.00000000 EUR 2026-12-18 XXXX -31567.30000000 N N N Exchange traded N/A 000000000 4.00000000 NC USD 556.00000000 0.001562637838 N/A DE US N 1 Options Clearing Corp. 549300CII6SLYGKNHA04 Put Purchased S&P 500 Index SPX INDEX 100.00000000 6200.00000000 USD 2026-06-18 XXXX -35696.00000000 N N N United States Treasury 254900HROIFWPRGM1V77 91282CME8 200000.00000000 PA USD 200500.00000000 0.563505191855 Long DBT UST US N 2 2026-12-31 Fixed 4.25000000 N N N N N N Exchange traded N/A 000000000 5.00000000 NC USD 7740.00000000 0.021753267755 N/A DE US N 1 Options Clearing Corp. 549300CII6SLYGKNHA04 Put Purchased S&P 500 Index SPX Index 100.00000000 5400.00000000 USD 2026-09-18 XXXX -54475.00000000 N N N Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 000000000 -10.00000000 NC USD -351010.70000000 -0.98651547055 N/A DE US N 1 Chicago Mercantile Exchange SNZ2OJLFK8MNNCLQOF39 Short CME E-mini Russell 1000 Growth Index Futures RGYM6 Index 2026-06-18 -2226439.30000000 USD -351010.70000000 N N N United States Treasury 254900HROIFWPRGM1V77 91282CKY6 100000.00000000 PA USD 100067.54000000 0.281239792150 Long DBT UST US N 2 2026-06-30 Fixed 4.63000000 N N N N N N MFS Growth Fund K4ZYIH3WSXKUSPKIPM59 552985673 52348.41000000 NS USD 10986360.18000000 30.87716209989 Long EC RF US N 1 N N N Exchange traded N/A 000000000 4.00000000 NC USD 16976.00000000 0.047711043077 N/A DE US N 1 Options Clearing Corp. 549300CII6SLYGKNHA04 Put Purchased S&P 500 Index SPX INDEX 100.00000000 5500.00000000 USD 2026-12-18 XXXX -29092.44000000 N N N United States Treasury 254900HROIFWPRGM1V77 91282CLP4 350000.00000000 PA USD 349682.81000000 0.982783436098 Long DBT UST US N 2 2026-09-30 Fixed 3.50000000 N N N N N N MFS Institutional Trust-MFS International Equity Fund DMEBH0UWWHA1KO5Z5N87 552966806 261057.42000000 NS USD 10993127.91000000 30.89618280309 Long EC RF US N 1 N N N MFS Institutional Money Market Portfolio 5L2W638H85N8T1136O07 55291X109 2226067.00000000 NS USD 2226289.61000000 6.256986303291 Long EC RF US N 1 N N N ICE Futures U.S., Inc. 5493004R83R1LVX2IL36 000000000 -29.00000000 NC USD -258748.95000000 -0.72721384893 N/A DE US N 1 ICE Futures U.S., Inc. 5493004R83R1LVX2IL36 Short ICE U.S. mini MSCI EAFE Index Futures MFSM6 Index 2026-06-19 -4252636.05000000 USD -258748.95000000 N N N Exchange traded N/A 000000000 -90.00000000 NC -19315.58000000 -0.05428643198 N/A DE US N 2 BofA Securities, Inc. 549300HN4UKV1E2R3U73 Put Written STOXX EUROPE 600 PRICE INDEX SXXP Index 50.00000000 490.00000000 EUR 2026-12-18 XXXX 16938.39000000 N N N MFS Value Fund HV6C0RMURVKFUQ3UTB42 55273H353 207023.35000000 NS USD 10736230.88000000 30.17417377478 Long EC RF US N 1 N N N 2026-06-12 MFS SERIES TRUST X James Byrne James Byrne Assistant Treasurer