NPORT-P false 0000911637 XXXXXXXX S000002500 C000006789 C000006790 C000006791 C000006792 C000068492 C000068493 C000068494 C000068495 C000068496 MFS SERIES TRUST XI 811-07992 0000911637 549300O3TPADV1WWUX67 111 HUNTINGTON AVENUE BOSTON 02199 617-954-5000 MFS Blended Research Core Equity Fund S000002500 SQK3NYUBFBKJ3GF1IO09 2026-09-30 2026-06-30 N 1413363711.98 603029.13 1412760682.85 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 122857.46000000 N AGCO Corp LYOM0B2GCF1JWXK5ZG04 001084102 75800.00000000 NS USD 9073260.00000000 0.642236162864 Long EC CORP US N 1 N N N Advanced Micro Devices Inc R2I72C950HOYXII45366 007903107 7988.00000000 NS USD 4640309.08000000 0.328456838892 Long EC CORP US N 1 N N N Airbnb Inc 549300HMUDNO0RY56D37 009066101 29936.00000000 NS USD 4283841.60000000 0.303224859808 Long EC CORP US N 1 N N N Albemarle Corp HDBLS2Q6GV1LSKQPBS54 012653101 7570.00000000 NS USD 1022177.10000000 0.072353167270 Long EC CORP US N 1 N N N Albertsons Cos Inc 549300YKWOC0AOR16R51 013091103 168077.00000000 NS USD 2274081.81000000 0.160967235116 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K107 84847.00000000 NS USD 29978990.51000000 2.122014780983 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K305 102225.00000000 NS USD 36532148.25000000 2.585869545597 Long EC CORP US N 1 N N N Altria Group Inc XSGZFLO9YTNO9VCQV219 02209S103 121079.00000000 NS USD 8711634.05000000 0.616639049752 Long EC CORP US N 1 N N N Amazon.com Inc ZXTILKJKG63JELOEG630 023135106 235928.00000000 NS USD 56231079.52000000 3.980226814251 Long EC CORP US N 1 N N N American Express Co R4PP93JZOLY261QX3811 025816109 5932.00000000 NS USD 2006499.00000000 0.142026814899 Long EC CORP US N 1 N N N Ameriprise Financial Inc 6ZLKQF7QB6JAEKQS5388 03076C106 33473.00000000 NS USD 15356073.48000000 1.086955042450 Long EC CORP US N 1 N N N Amphenol Corp 549300D3L3G0R4U4VT04 032095101 60982.00000000 NS USD 10752346.24000000 0.761087590455 Long EC CORP US N 1 N N N Apple Inc HWUPKR0MPOU8FGXBT394 037833100 383037.00000000 NS USD 110835586.32000000 7.845319286236 Long EC CORP US N 1 N N N Applied Materials Inc 41BNNE1AFPNAZELZ6K07 038222105 8340.00000000 NS USD 6029820.00000000 0.426811141702 Long EC CORP US N 1 N N N Aramark 549300MR6PG2DWZUIL39 03852U106 362671.00000000 NS USD 20635979.90000000 1.460684753653 Long EC CORP US N 1 N N N Arista Networks Inc 635400H1WKBLOQERUU95 040413205 115291.00000000 NS USD 19585635.08000000 1.386337779480 Long EC CORP US N 1 N N N Autodesk Inc FRKKVKAIQEF3FCSTPG55 052769106 10532.00000000 NS USD 2047631.44000000 0.144938308721 Long EC CORP US N 1 N N N Bank of America Corp 9DJT3UXIJIZJI4WXO774 060505104 38365.00000000 NS USD 2186037.70000000 0.154735173942 Long EC CORP US N 1 N N N Berkshire Hathaway Inc 5493000C01ZX7D35SD85 084670702 11673.00000000 NS USD 5841052.47000000 0.413449534723 Long EC CORP US N 1 N N N Booking Holdings Inc FXM8FAOHMYDIPD38UZ17 09857L108 37854.00000000 NS USD 6747096.96000000 0.477582441379 Long EC CORP US N 1 N N N Bristol-Myers Squibb Co HLYYNH7UQUORYSJQCN42 110122108 217660.00000000 NS USD 12541569.20000000 0.887734869199 Long EC CORP US N 1 N N N Broadcom Inc 549300WV6GIDOZJTV909 11135F101 95486.00000000 NS USD 36069836.50000000 2.553145549551 Long EC CORP US N 1 N N N Brunswick Corp/DE YM4O38W15AX4YLLQKU27 117043109 51205.00000000 NS USD 4313509.20000000 0.305324833311 Long EC CORP US N 1 N N N Cigna Group/The 549300VIWYMSIGT1U456 125523100 59349.00000000 NS USD 16361332.32000000 1.158110677810 Long EC CORP US N 1 N N N Caterpillar Inc WRJR7GS4GTRECRRTVX92 149123101 5360.00000000 NS USD 5707864.00000000 0.404022002402 Long EC CORP US N 1 N N N Citigroup Inc 6SHGI4ZSSLCXXQSBB395 172967424 191192.00000000 NS USD 26759232.32000000 1.894109359415 Long EC CORP US N 1 N N N Colgate-Palmolive Co YMEGZFW4SBUSS5BQXF88 194162103 194053.00000000 NS USD 17790779.04000000 1.259291772199 Long EC CORP US N 1 N N N ConocoPhillips WPTL2Z3FIYTHSP5V2253 20825C104 99251.00000000 NS USD 10318133.96000000 0.730352570343 Long EC CORP US N 1 N N N Cousins Properties Inc 5493007XPYD5EJABN062 222795502 104844.00000000 NS USD 3143223.12000000 0.222488009339 Long EC CORP US N 1 N N N Curtiss-Wright Corp TEL51ETZWP7D0ZM4X325 231561101 6684.00000000 NS USD 5064867.84000000 0.358508550066 Long EC CORP US N 1 N N N Dollar General Corp OPX52SQVOZI8IVSWYU66 256677105 62095.00000000 NS USD 7147755.45000000 0.505942410258 Long EC CORP US N 1 N N N Dropbox Inc 549300JCDF7UAR6TJR51 26210C104 180822.00000000 NS USD 4967180.34000000 0.351593896991 Long EC CORP US N 1 N N N Eastman Chemical Co FDPVHDGJ1IQZFK9KH630 277432100 38806.00000000 NS USD 2599225.88000000 0.183982036841 Long EC CORP US N 1 N N N Edison International 549300I7ROF15MAEVP56 281020107 273092.00000000 NS USD 20331699.40000000 1.439146746282 Long EC CORP US N 1 N N N Equitable Holdings Inc 549300FIBAKMNHPZ4009 29452E101 183162.00000000 NS USD 8037148.56000000 0.568896675676 Long EC CORP US N 1 N N N Essential Properties Realty Trust Inc 2549009LXQLVYCGLZO50 29670E107 109835.00000000 NS USD 3278574.75000000 0.232068657473 Long EC CORP US N 1 N N N Exxon Mobil Corp J3WHBG0MTS7O8ZVMDC91 30231G102 8299.00000000 NS USD 1134639.28000000 0.080313622383 Long EC CORP US N 1 N N N Meta Platforms Inc BQ4BKCS1HXDV9HN80Z93 30303M102 52061.00000000 NS USD 29325440.69000000 2.075754304744 Long EC CORP US N 1 N N N Ford Motor Co 20S05OYHG0MQM4VUIC57 345370860 107476.00000000 NS USD 1493916.40000000 0.105744477329 Long EC CORP US N 1 N N N GE Vernova Inc 254900DP080RU6OK2553 36828A101 19809.00000000 NS USD 23272801.74000000 1.647327960249 Long EC CORP US N 1 N N N General Dynamics Corp 9C1X8XOOTYY2FNYTVH06 369550108 51166.00000000 NS USD 18125043.84000000 1.282952170174 Long EC CORP US N 1 N N N General Electric Co 3C7474T6CDKPR9K6YT90 369604301 20594.00000000 NS USD 7696595.62000000 0.544791181792 Long EC CORP US N 1 N N N Gilead Sciences Inc 549300WTZWR07K8MNV44 375558103 106958.00000000 NS USD 13513073.72000000 0.956501259133 Long EC CORP US N 1 N N N Hartford Insurance Group Inc/The IU7C3FTM7Y3BQM112U94 416515104 24873.00000000 NS USD 3296169.96000000 0.233314106204 Long EC CORP US N 1 N N N Home Depot Inc/The QEKMOTMBBKA8I816DO57 437076102 13030.00000000 NS USD 4595420.40000000 0.325279465643 Long EC CORP US N 1 N N N Illumina Inc SQ95QG8SR5Q56LSNF682 452327109 9754.00000000 NS USD 1715045.82000000 0.121396768810 Long EC CORP US N 1 N N N Incyte Corp 549300Z4WN6JVZ3T4680 45337C102 12077.00000000 NS USD 1369048.72000000 0.096905918788 Long EC CORP US N 1 N N N Intel Corp KNX4USFCNGPY45LOCE31 458140100 15818.00000000 NS USD 2208667.34000000 0.156336976730 Long EC CORP US N 1 N N N Intuit Inc VI90HBPH7XSFMB9E4M29 461202103 35585.00000000 NS USD 9287685.00000000 0.657413892724 Long EC CORP US N 1 N N N JPMorgan Chase & Co 8I5DZWZKVSZI1NUHU748 46625H100 11312.00000000 NS USD 3702756.96000000 0.262093715159 Long EC CORP US N 1 N N N Johnson & Johnson 549300G0CFPGEF6X2043 478160104 128303.00000000 NS USD 32585112.91000000 2.306484976936 Long EC CORP US N 1 N N N Jones Lang LaSalle Inc 6SYKCME112RT8TQUO411 48020Q107 12910.00000000 NS USD 4001454.50000000 0.283236541657 Long EC CORP US N 1 N N N KLA Corp 549300H0BF5JCG96TJ81 482480100 76135.00000000 NS USD 22970690.85000000 1.625943525244 Long EC CORP US N 1 N N N Lam Research Corp 549300I4GMO6D34U1T02 512807306 79108.00000000 NS USD 34279869.64000000 2.426445615038 Long EC CORP US N 1 N N N Leidos Holdings Inc 549300IUTGTP6EJP8124 525327102 14097.00000000 NS USD 1451568.09000000 0.102746920099 Long EC CORP US N 1 N N N Eli Lilly & Co FRDRIPF3EKNDJ2CQJL29 532457108 1874.00000000 NS USD 2247731.82000000 0.159102093318 Long EC CORP US N 1 N N N MFS Institutional Money Market Portfolio 5L2W638H85N8T1136O07 55291X109 7181010.71000000 NS USD 7181010.71000000 0.508296330523 Long EC RF US N 1 N N N Mastercard Inc AR5L2ODV9HN37376R084 57636Q104 50978.00000000 NS USD 26182300.80000000 1.853272186707 Long EC CORP US N 1 N N N McKesson Corp 549300WZWOM80UCFSF54 58155Q103 24328.00000000 NS USD 18382236.80000000 1.301157161517 Long EC CORP US N 1 N N N Microsoft Corp INR2EJN1ERAN0W5ZP974 594918104 157559.00000000 NS USD 58772658.18000000 4.160128385045 Long EC CORP US N 1 N N N Micron Technology Inc B3DXGBC8GAIYWI2Z0172 595112103 25646.00000000 NS USD 29602921.34000000 2.095395327698 Long EC CORP US N 1 N N N Monster Beverage Corp 52990090AP0E7HCB6F33 61174X109 225843.00000000 NS USD 21708029.16000000 1.536568041814 Long EC CORP US N 1 N N N Morgan Stanley IGJSJL3JD5P30I6NJZ34 617446448 12864.00000000 NS USD 2689090.56000000 0.190342964144 Long EC CORP US N 1 N N N Netflix Inc 549300Y7VHGU0I7CE873 64110L106 140077.00000000 NS USD 10001497.80000000 0.707939987388 Long EC CORP US N 1 N N N Newmont Corp 549300VSP3RIX7FGDZ51 651639106 67199.00000000 NS USD 6276386.60000000 0.444263963188 Long EC CORP US N 1 N N N NextEra Energy Inc 254900RHL9MEUS5NKX63 65339F101 26962.00000000 NS USD 2366454.74000000 0.167505704874 Long EC CORP US N 1 N N N Northern Trust Corp 549300GLF98S992BC502 665859104 140909.00000000 NS USD 24495620.56000000 1.733883230002 Long EC CORP US N 1 N N N NVIDIA Corp 549300S4KLFTLO7GSQ80 67066G104 619127.00000000 NS USD 123881121.43000000 8.768726574418 Long EC CORP US N 1 N N N O'Reilly Automotive Inc 549300K2RLMQL149Q332 67103H107 178036.00000000 NS USD 16395335.24000000 1.160517519989 Long EC CORP US N 1 N N N Okta Inc 549300N8J06I8MRHU620 679295105 122006.00000000 NS USD 16647718.70000000 1.178382078585 Long EC CORP US N 1 N N N Omnicom Group Inc HKUPACFHSSASQK8HLS17 681919106 18803.00000000 NS USD 1369422.49000000 0.096932375498 Long EC CORP US N 1 N N N PG&E Corp 8YQ2GSDWYZXO2EDN3511 69331C108 1021444.00000000 NS USD 17180688.08000000 1.216107461692 Long EC CORP US N 1 N N N PepsiCo Inc FJSUNZKFNQ5YPJ5OT455 713448108 6100.00000000 NS USD 825940.00000000 0.058462838754 Long EC CORP US N 1 N N N Pfizer Inc 765LHXWGK1KXCLTFYQ30 717081103 788098.00000000 NS USD 18977399.84000000 1.343284823139 Long EC CORP US N 1 N N N Philip Morris International Inc HL3H1H2BGXWVG3BSWR90 718172109 41261.00000000 NS USD 7464527.51000000 0.528364612677 Long EC CORP US N 1 N N N Popular Inc 5493008CARDZMVQ3LO89 733174700 102892.00000000 NS USD 16892808.56000000 1.195730371397 Long EC CORP PR N 1 N N N Portland General Electric Co GJOUP9M7C39GLSK9R870 736508847 36498.00000000 NS USD 1891691.34000000 0.133900338745 Long EC CORP US N 1 N N N QUALCOMM Inc H1J8DDZKZP6H7RWC0H53 747525103 5563.00000000 NS USD 1027986.77000000 0.072764395447 Long EC CORP US N 1 N N N Raymond James Financial Inc RGUZHJ05YTITL6D76949 754730109 7723.00000000 NS USD 1174127.69000000 0.083108746177 Long EC CORP US N 1 N N N RTX Corp I07WOS4YJ0N7YRFE7309 75513E101 20015.00000000 NS USD 3797445.95000000 0.268796123511 Long EC CORP US N 1 N N N Roku Inc 549300KR6ITU0YIR1T71 77543R102 25495.00000000 NS USD 3521879.30000000 0.249290579979 Long EC CORP US N 1 N N N Salesforce Inc RCGZFPDMRW58VJ54VR07 79466L302 80353.00000000 NS USD 12588100.98000000 0.891028546647 Long EC CORP US N 1 N N N Sandisk Corp 5299007I9R9N3RO43S32 80004C200 3924.00000000 NS USD 8922116.52000000 0.631537713946 Long EC CORP US N 1 N N N Charles Schwab Corp/The 549300VSGCJ7E698NM85 808513105 24560.00000000 NS USD 2266151.20000000 0.160405879602 Long EC CORP US N 1 N N N Snowflake Inc 254900CJNSY1K7T53Z16 833445109 5548.00000000 NS USD 1411966.00000000 0.099943749648 Long EC CORP US N 1 N N N Space Exploration Technologies Corp 549300B9WLO96RQCXP87 84615Q103 51541.00000000 NS USD 8806295.26000000 0.623339491741 Long EC CORP US N 1 N N N TJX Cos Inc/The V167QI9I69W364E2DY52 872540109 25608.00000000 NS USD 3879612.00000000 0.274612115632 Long EC CORP US N 1 N N N TKO Group Holdings Inc N/A 87256C101 21298.00000000 NS USD 4287500.38000000 0.303483840684 Long EC CORP US N 1 N N N Tesla Inc 54930043XZGB27CTOV49 88160R101 26036.00000000 NS USD 10950741.60000000 0.775130687945 Long EC CORP US N 1 N N N Uber Technologies Inc 549300B2FTG34FILDR98 90353T100 51809.00000000 NS USD 3738537.44000000 0.264626379073 Long EC CORP US N 1 N N N Valero Energy Corp 549300XTO5VR8SKV1V74 91913Y100 43028.00000000 NS USD 11206212.32000000 0.793213773290 Long EC CORP US N 1 N N N Ventas Inc ORQTRC074CWLT3DKHT41 92276F100 17252.00000000 NS USD 1531977.60000000 0.108438578352 Long EC CORP US N 1 N N N Verisk Analytics Inc 549300I1YSWNIRKBWP67 92345Y106 22847.00000000 NS USD 4101721.91000000 0.290333809525 Long EC CORP US N 1 N N N Vertex Pharmaceuticals Inc 54930015RAQRRZ5ZGJ91 92532F100 8920.00000000 NS USD 4430831.60000000 0.313629311304 Long EC CORP US N 1 N N N Visa Inc 549300JZ4OKEHW3DPJ59 92826C839 73931.00000000 NS USD 25364986.79000000 1.795419924826 Long EC CORP US N 1 N N N WP Carey Inc 54930042CRNE713E3Q67 92936U109 123136.00000000 NS USD 8804224.00000000 0.623192880922 Long EC CORP US N 1 N N N Westinghouse Air Brake Technologies Corp 06BTX5UWZD0GQ5N5Y745 929740108 69668.00000000 NS USD 18782492.80000000 1.329488640787 Long EC CORP US N 1 N N N Wells Fargo & Co PBLD0EJDB5FWOLXP3B76 949746101 97248.00000000 NS USD 8036574.72000000 0.568856057332 Long EC CORP US N 1 N N N Western Digital Corp 549300QQXOOYEF89IC56 958102105 3365.00000000 NS USD 2149292.80000000 0.152134245105 Long EC CORP US N 1 N N N Zoom Communications Inc 549300T9GCHU0ODOM055 98980L101 66445.00000000 NS USD 5734867.95000000 0.405933433710 Long EC CORP US N 1 N N N CRH PLC 549300MIDJNNTH068E74 000000000 37505.00000000 NS USD 4013035.00000000 0.284056248784 Long EC CORP IE N 1 N N N Eaton Corp PLC 549300VDIGTMXUNT7H71 000000000 21710.00000000 NS USD 9251065.20000000 0.654821818889 Long EC CORP IE N 1 N N N Everest Group Ltd 549300N24XF2VV0B3570 000000000 2937.00000000 NS USD 1049184.51000000 0.074264843489 Long EC CORP BM N 1 N N N Aptiv PLC 254900HTTDFIJZ32GX53 000000000 25800.00000000 NS USD 1583604.00000000 0.112092870308 Long EC CORP JE N 1 N N N Medtronic PLC 549300GX3ZBSQWUXY261 000000000 57545.00000000 NS USD 4501745.35000000 0.318648827409 Long EC CORP IE N 1 N N N nVent Electric PLC 254900LK60A9DK5W5N81 000000000 12845.00000000 NS USD 2178640.45000000 0.154211571460 Long EC CORP IE N 1 N N N Seagate Technology Holdings PLC 635400RUXIFEZSRU8X70 000000000 8295.00000000 NS USD 8004675.00000000 0.566598086793 Long EC CORP IE N 1 N N N TechnipFMC PLC 549300D5I93QWCJTCK36 000000000 212708.00000000 NS USD 14102540.40000000 0.998225713045 Long EC CORP GB N 1 N N N Trane Technologies PLC 549300BURLR9SLYY2705 000000000 3445.00000000 NS USD 1692046.20000000 0.119768777581 Long EC CORP IE N 1 N N N Viking Holdings Ltd 52990032GOPN7BVQMN13 000000000 106628.00000000 NS USD 11160752.76000000 0.789995991216 Long EC CORP BM N 1 N N N Chubb Ltd E0JAN6VLUDI1HITHT809 000000000 8338.00000000 NS USD 2841090.12000000 0.201102009313 Long EC CORP CH N 1 N N N Spotify Technology SA 549300B4X0JHWV0DTD60 000000000 18509.00000000 NS USD 8498037.17000000 0.601519937039 Long EC CORP LU N 1 N N N 2026-07-29 MFS SERIES TRUST XI James Byrne James Byrne Assistant Treasurer XXXX