NPORT-P false 0000798244 XXXXXXXX S000042701 C000132015 C000132020 C000132021 C000132016 C000132013 C000132019 C000132018 C000132017 C000132014 MFS SERIES TRUST I 811-04777 0000798244 549300QRB5FQ35HH3533 111 HUNTINGTON AVENUE BOSTON 02199 617-954-5000 MFS Low Volatility Equity Fund S000042701 549300X3ZVIZOWLC2P38 2025-08-31 2025-05-31 N 354768375.82 169213.27 354599162.55 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 0.00000000 N Honeywell International Inc ISRPG12PN4EIEOEMW547 438516106 8802.00000000 NS USD 1995149.34000000 0.562649196814 Long EC CORP US N 1 N N N Equitable Holdings Inc 549300FIBAKMNHPZ4009 29452E101 27573.00000000 NS USD 1457784.51000000 0.411107713711 Long EC CORP US N 1 N N N Assurant Inc H3F39CAXWQRVWURFXL38 04621X108 15118.00000000 NS USD 3068651.64000000 0.865386036992 Long EC CORP US N 1 N N N Intuit Inc VI90HBPH7XSFMB9E4M29 461202103 7056.00000000 NS USD 5316484.32000000 1.499294099221 Long EC CORP US N 1 N N N Accenture PLC 5493000EWHDSR3MZWH98 000000000 23129.00000000 NS USD 7327729.78000000 2.066482539694 Long EC CORP IE N 1 N N N AMETEK Inc 549300WZDEF9KKE40E98 031100100 12381.00000000 NS USD 2212979.94000000 0.624079291131 Long EC CORP US N 1 N N N Teledyne Technologies Inc 549300VSMO9KYQWDND94 879360105 17382.00000000 NS USD 8671184.52000000 2.445348279348 Long EC CORP US N 1 N N N Dominion Energy Inc ILUL7B6Z54MRYCF6H308 25746U109 29302.00000000 NS USD 1660544.34000000 0.468287721848 Long EC CORP US N 1 N N N Mondelez International Inc 549300DV9GIB88LZ5P30 609207105 64082.00000000 NS USD 4324894.18000000 1.219657189514 Long EC CORP US N 1 N N N Johnson & Johnson 549300G0CFPGEF6X2043 478160104 70033.00000000 NS USD 10869821.93000000 3.065382854215 Long EC CORP US N 1 N N N McDonald's Corp UE2136O97NLB5BYP9H04 580135101 14255.00000000 NS USD 4473931.75000000 1.261687060349 Long EC CORP US N 1 N N N Essential Properties Realty Trust Inc 2549009LXQLVYCGLZO50 29670E107 48333.00000000 NS USD 1570822.50000000 0.442985394749 Long EC CORP US N 1 N N N Amphenol Corp 549300D3L3G0R4U4VT04 032095101 88707.00000000 NS USD 7977420.51000000 2.249700888358 Long EC CORP US N 1 N N N Northern Trust Corp 549300GLF98S992BC502 665859104 17380.00000000 NS USD 1855141.20000000 0.523165702552 Long EC CORP US N 1 N N N Hilton Worldwide Holdings Inc 549300HVGPK36ICB0B89 43300A203 9688.00000000 NS USD 2406886.72000000 0.678762663366 Long EC CORP US N 1 N N N WP Carey Inc 54930042CRNE713E3Q67 92936U109 28810.00000000 NS USD 1808115.60000000 0.509904080708 Long EC CORP US N 1 N N N General Mills Inc 2TGYMUGI08PO8X8L6150 370334104 140628.00000000 NS USD 7630475.28000000 2.151859362872 Long EC CORP US N 1 N N N Reinsurance Group of America Inc LORM1GNEU1DKEW527V90 759351604 8469.00000000 NS USD 1721663.01000000 0.485523710101 Long EC CORP US N 1 N N N AbbVie Inc FR5LCKFTG8054YNNRU85 00287Y109 9597.00000000 NS USD 1786097.67000000 0.503694835925 Long EC CORP US N 1 N N N Ventas Inc ORQTRC074CWLT3DKHT41 92276F100 27276.00000000 NS USD 1753301.28000000 0.494445973135 Long EC CORP US N 1 N N N Everest Group Ltd 549300N24XF2VV0B3570 000000000 14904.00000000 NS USD 5174519.76000000 1.459258877767 Long EC CORP BM N 1 N N N Cognizant Technology Solutions Corp 5493006IEVQEFQO40L83 192446102 109559.00000000 NS USD 8873183.41000000 2.502313695890 Long EC CORP US N 1 N N N EOG Resources Inc XWTZDRYZPBUHIQBKDB46 26875P101 24377.00000000 NS USD 2646610.89000000 0.746366931880 Long EC CORP US N 1 N N N Aramark 549300MR6PG2DWZUIL39 03852U106 38603.00000000 NS USD 1563421.50000000 0.440898249380 Long EC CORP US N 1 N N N Chubb Ltd E0JAN6VLUDI1HITHT809 000000000 18174.00000000 NS USD 5401312.80000000 1.523216456902 Long EC CORP CH N 1 N N N Omnicom Group Inc HKUPACFHSSASQK8HLS17 681919106 51703.00000000 NS USD 3797068.32000000 1.070805777626 Long EC CORP US N 1 N N N General Dynamics Corp 9C1X8XOOTYY2FNYTVH06 369550108 6383.00000000 NS USD 1777601.67000000 0.501298891180 Long EC CORP US N 1 N N N Xcel Energy Inc LGJNMI9GH8XIDG5RCM61 98389B100 53059.00000000 NS USD 3719435.90000000 1.048912770479 Long EC CORP US N 1 N N N Comcast Corp 51M0QTTNCGUN7KFCFZ59 20030N101 75512.00000000 NS USD 2610449.84000000 0.736169206161 Long EC CORP US N 1 N N N Exelon Corp 3SOUA6IRML7435B56G12 30161N101 90520.00000000 NS USD 3966586.40000000 1.118611327639 Long EC CORP US N 1 N N N Lear Corp 549300UPNBTXA1SYTQ33 521865204 17930.00000000 NS USD 1621230.60000000 0.457200910555 Long EC CORP US N 1 N N N Medtronic PLC 549300GX3ZBSQWUXY261 000000000 45367.00000000 NS USD 3764553.66000000 1.061636365108 Long EC CORP IE N 1 N N N Corteva Inc 549300WZN9I2QKLS0O94 22052L104 24040.00000000 NS USD 1702032.00000000 0.479987597195 Long EC CORP US N 1 N N N PepsiCo Inc FJSUNZKFNQ5YPJ5OT455 713448108 34104.00000000 NS USD 4482970.80000000 1.264236149843 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K305 41523.00000000 NS USD 7131160.02000000 2.011048184298 Long EC CORP US N 1 N N N Visa Inc 549300JZ4OKEHW3DPJ59 92826C839 23164.00000000 NS USD 8459261.16000000 2.385584077290 Long EC CORP US N 1 N N N Eastman Chemical Co FDPVHDGJ1IQZFK9KH630 277432100 23212.00000000 NS USD 1819124.44000000 0.513008667848 Long EC CORP US N 1 N N N Boston Scientific Corp Y6ZDD9FP4P8JSSJMW954 101137107 15332.00000000 NS USD 1613846.32000000 0.455118480369 Long EC CORP US N 1 N N N NXP Semiconductors NV 724500M9BY5293JDF951 000000000 12101.00000000 NS USD 2312864.13000000 0.652247487943 Long EC CORP NL N 1 N N N Leidos Holdings Inc 549300IUTGTP6EJP8124 525327102 10923.00000000 NS USD 1622283.96000000 0.457497967094 Long EC CORP US N 1 N N N Biogen Inc W8J5WZB5IY3K0NDQT671 09062X103 11445.00000000 NS USD 1485446.55000000 0.418908645840 Long EC CORP US N 1 N N N Fiserv Inc GI7UBEJLXYLGR2C7GV83 337738108 16297.00000000 NS USD 2652988.63000000 0.748165509168 Long EC CORP US N 1 N N N Procter & Gamble Co/The 2572IBTT8CCZW6AU4141 742718109 40208.00000000 NS USD 6830937.12000000 1.926382755920 Long EC CORP US N 1 N N N Albertsons Cos Inc 549300YKWOC0AOR16R51 013091103 84445.00000000 NS USD 1877212.35000000 0.529389955830 Long EC CORP US N 1 N N N Tyler Technologies Inc 25490040SMU4Z8LBCW70 902252105 11035.00000000 NS USD 6367084.65000000 1.795572387766 Long EC CORP US N 1 N N N Microsoft Corp INR2EJN1ERAN0W5ZP974 594918104 17958.00000000 NS USD 8267144.88000000 2.331405641386 Long EC CORP US N 1 N N N American Tower Corp 5493006ORUSIL88JOE18 03027X100 11076.00000000 NS USD 2377463.40000000 0.670465035197 Long EC CORP US N 1 N N N Federal Realty Investment Trust 549300FHEI1SLVZ0RB48 313745101 13784.00000000 NS USD 1316096.32000000 0.371150430964 Long EC CORP US N 1 N N N Ryman Hospitality Properties Inc 529900GCCWW9SRMPJR11 78377T107 17134.00000000 NS USD 1663882.74000000 0.469229179232 Long EC CORP US N 1 N N N Waste Management Inc 549300YX8JIID70NFS41 94106L109 10722.00000000 NS USD 2583680.34000000 0.728619977954 Long EC CORP US N 1 N N N Entergy Corp 4XM3TW50JULSLG8BNC79 29364G103 17368.00000000 NS USD 1446407.04000000 0.407899169755 Long EC CORP US N 1 N N N Cigna Group/The 549300VIWYMSIGT1U456 125523100 11989.00000000 NS USD 3796196.96000000 1.070560046645 Long EC CORP US N 1 N N N Lamar Advertising Co 529900Y8WW4MKVPTB543 512816109 11772.00000000 NS USD 1418996.88000000 0.400169269942 Long EC CORP US N 1 N N N O'Reilly Automotive Inc 549300K2RLMQL149Q332 67103H107 2423.00000000 NS USD 3313452.50000000 0.934421975554 Long EC CORP US N 1 N N N Principal Financial Group Inc CUMYEZJOAF02RYZ1JJ85 74251V102 23693.00000000 NS USD 1845447.77000000 0.520432072295 Long EC CORP US N 1 N N N Walmart Inc Y87794H0US1R65VBXU25 931142103 31595.00000000 NS USD 3119058.40000000 0.879601174906 Long EC CORP US N 1 N N N Public Storage 254900GLQZAD4N7N5Q19 74460D109 5951.00000000 NS USD 1835347.91000000 0.517583825297 Long EC CORP US N 1 N N N Corning Inc 549300X2937PB0CJ7I56 219350105 121539.00000000 NS USD 6027119.01000000 1.699699166421 Long EC CORP US N 1 N N N Axis Capital Holdings Ltd 635400VD2NQBYAHMEM55 000000000 15604.00000000 NS USD 1619695.20000000 0.456767914608 Long EC CORP BM N 1 N N N Amentum Holdings Inc 2549009FJIBLW40CU216 023939101 744.80000000 NS USD 15387.65000000 0.004339449052 Long EC CORP US N 1 N N N Ecolab Inc 82DYEISM090VG8LTLS26 278865100 11037.00000000 NS USD 2931647.94000000 0.826749820534 Long EC CORP US N 1 N N N Mastercard Inc AR5L2ODV9HN37376R084 57636Q104 5207.00000000 NS USD 3049219.20000000 0.859905922527 Long EC CORP US N 1 N N N Republic Services Inc NKNQHM6BLECKVOQP7O46 760759100 27664.00000000 NS USD 7117670.56000000 2.007244041078 Long EC CORP US N 1 N N N Bank of America Corp 9DJT3UXIJIZJI4WXO774 060505104 34726.00000000 NS USD 1532458.38000000 0.432166384426 Long EC CORP US N 1 N N N Essex Property Trust Inc 549300TR2H2VEFX0NC60 297178105 5072.00000000 NS USD 1439940.80000000 0.406075634709 Long EC CORP US N 1 N N N Home Depot Inc/The QEKMOTMBBKA8I816DO57 437076102 5661.00000000 NS USD 2084889.69000000 0.587956743892 Long EC CORP US N 1 N N N Evergy Inc 549300PGTHDQY6PSUI61 30034W106 67958.00000000 NS USD 4513090.78000000 1.272730242097 Long EC CORP US N 1 N N N Jacobs Solutions Inc N/A 46982L108 12186.00000000 NS USD 1539091.80000000 0.434037065663 Long EC CORP US N 1 N N N Abbott Laboratories HQD377W2YR662HK5JX27 002824100 30907.00000000 NS USD 4128557.06000000 1.164288440590 Long EC CORP US N 1 N N N CSX Corp 549300JVQR4N1MMP3Q88 126408103 50169.00000000 NS USD 1584838.71000000 0.446938085979 Long EC CORP US N 1 N N N MFS Institutional Money Market Portfolio 5L2W638H85N8T1136O07 55291X109 364774.92000000 NS USD 364774.92000000 0.102869650728 Long EC RF US N 1 N N N AvalonBay Communities Inc K9G90K85RBWD2LAGQX17 053484101 7988.00000000 NS USD 1651678.76000000 0.465787552379 Long EC CORP US N 1 N N N Analog Devices Inc GYVOE5EZ4GDAVTU4CQ61 032654105 27987.00000000 NS USD 5988658.26000000 1.688852905611 Long EC CORP US N 1 N N N MetLife Inc C4BXATY60WC6XEOZDX54 59156R108 23864.00000000 NS USD 1875233.12000000 0.528831796024 Long EC CORP US N 1 N N N Duke Energy Corp I1BZKREC126H0VB1BL91 26441C204 36423.00000000 NS USD 4287715.56000000 1.209172500342 Long EC CORP US N 1 N N N Pfizer Inc 765LHXWGK1KXCLTFYQ30 717081103 123901.00000000 NS USD 2910434.49000000 0.820767446000 Long EC CORP US N 1 N N N Waste Connections Inc 549300HDLRTPBQU69P29 94106B101 23353.00000000 NS USD 4602642.77000000 1.297984670043 Long EC CORP CA N 1 N N N Voya Financial Inc 549300T065Z4KJ686G75 929089100 23078.00000000 NS USD 1535148.56000000 0.432925038220 Long EC CORP US N 1 N N N TE Connectivity PLC 6367003TB6K484NFHE54 000000000 60421.00000000 NS USD 9671589.47000000 2.727471040949 Long EC CORP IE N 1 N N N JB Hunt Transport Services Inc 549300XCD1MPI1C5GK90 445658107 12943.00000000 NS USD 1797135.55000000 0.506807612594 Long EC CORP US N 1 N N N ACI Worldwide Inc 5493003BPVMZUJ6F5C02 004498101 27129.00000000 NS USD 1254987.54000000 0.353917231776 Long EC CORP US N 1 N N N AutoZone Inc GA3JGKJ41LJKXDN23E90 053332102 1686.00000000 NS USD 6293905.44000000 1.774935223969 Long EC CORP US N 1 N N N Ameriprise Financial Inc 6ZLKQF7QB6JAEKQS5388 03076C106 3636.00000000 NS USD 1851596.64000000 0.522166106283 Long EC CORP US N 1 N N N Hartford Insurance Group Inc/The IU7C3FTM7Y3BQM112U94 416515104 25636.00000000 NS USD 3328578.24000000 0.938687563744 Long EC CORP US N 1 N N N McKesson Corp 549300WZWOM80UCFSF54 58155Q103 14143.00000000 NS USD 10176029.93000000 2.869727569806 Long EC CORP US N 1 N N N CACI International Inc SYRPI2D1O9WRTS2WX210 127190304 4257.00000000 NS USD 1821996.00000000 0.513818472355 Long EC CORP US N 1 N N N Verisk Analytics Inc 549300I1YSWNIRKBWP67 92345Y106 5858.00000000 NS USD 1840232.12000000 0.518961214337 Long EC CORP US N 1 N N N NNN REIT Inc 5493008JKH5SOTI0JS97 637417106 38744.00000000 NS USD 1617949.44000000 0.456275595341 Long EC CORP US N 1 N N N RPM International Inc 549300TJCKW4BRXPJ474 749685103 13704.00000000 NS USD 1560063.36000000 0.439951225147 Long EC CORP US N 1 N N N Cboe Global Markets Inc 529900RLNSGA90UPEH54 12503M108 11552.00000000 NS USD 2646794.24000000 0.746418638150 Long EC CORP US N 1 N N N T-Mobile US Inc 549300QHIJYOHPACPG31 872590104 7510.00000000 NS USD 1818922.00000000 0.512951578035 Long EC CORP US N 1 N N N Kimberly-Clark Corp MP3J6QPYPGN75NVW2S34 494368103 13196.00000000 NS USD 1897056.96000000 0.534986305765 Long EC CORP US N 1 N N N Merck & Co Inc 4YV9Y5M8S0BRK1RP0397 58933Y105 70323.00000000 NS USD 5403619.32000000 1.523866915291 Long EC CORP US N 1 N N N Expand Energy Corp X2MT1W32SPAZ9WSKLE78 165167735 14359.00000000 NS USD 1667510.67000000 0.470252286556 Long EC CORP US N 1 N N N Colgate-Palmolive Co YMEGZFW4SBUSS5BQXF88 194162103 39841.00000000 NS USD 3702822.54000000 1.044227660711 Long EC CORP US N 1 N N N STERIS PLC N/A 000000000 14420.00000000 NS USD 3535928.20000000 0.997162027843 Long EC CORP IE N 1 N N N JPMorgan Chase & Co 8I5DZWZKVSZI1NUHU748 46625H100 10191.00000000 NS USD 2690424.00000000 0.758722604039 Long EC CORP US N 1 N N N Westinghouse Air Brake Technologies Corp 06BTX5UWZD0GQ5N5Y745 929740108 8296.00000000 NS USD 1678446.72000000 0.473336346293 Long EC CORP US N 1 N N N DTE Energy Co 549300IX8SD6XXD71I78 233331107 19585.00000000 NS USD 2676290.25000000 0.754736765522 Long EC CORP US N 1 N N N Motorola Solutions Inc 6S552MUG6KGJVEBSEC55 620076307 21948.00000000 NS USD 9116760.24000000 2.571004447511 Long EC CORP US N 1 N N N Hologic Inc 549300DYP6F5ZJL0LB74 436440101 30898.00000000 NS USD 1920928.66000000 0.541718329560 Long EC CORP US N 1 N N N Hanover Insurance Group Inc/The JJYR6MFKFF6CF8DBZ078 410867105 11628.00000000 NS USD 2046295.44000000 0.577072834939 Long EC CORP US N 1 N N N Reynolds Consumer Products Inc N/A 76171L106 74419.00000000 NS USD 1643171.52000000 0.463388437858 Long EC CORP US N 1 N N N American International Group Inc ODVCVCQG2BP6VHV36M30 026874784 18157.00000000 NS USD 1536808.48000000 0.433393149873 Long EC CORP US N 1 N N N Eaton Corp PLC 549300VDIGTMXUNT7H71 000000000 6393.00000000 NS USD 2047038.60000000 0.577282412422 Long EC CORP IE N 1 N N N 2025-06-27 MFS SERIES TRUST I James Byrne James Byrne Assistant Treasurer XXXX