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 2021-08-31 2021-05-31 N 566320757.16 418026.42 565902730.74 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 52262.92000000 N Honeywell International Inc ISRPG12PN4EIEOEMW547 438516106 11215.00000000 NS USD 2589655.65000000 0.457614976802 Long EC CORP US N 1 N N N Charles River Laboratories International Inc 549300BSQ0R4UZ5KX287 159864107 8079.00000000 NS USD 2730621.21000000 0.482524833628 Long EC CORP US N 1 N N N EPAM Systems Inc 549300XCR4R530HJP604 29414B104 10892.00000000 NS USD 5202019.20000000 0.919242639666 Long EC CORP US N 1 N N N Accenture PLC N/A 000000000 10701.00000000 NS USD 3019394.16000000 0.533553558939 Long EC CORP IE N 1 N N N AMETEK Inc 549300WZDEF9KKE40E98 031100100 22143.00000000 NS USD 2991519.30000000 0.528627825507 Long EC CORP US N 1 N N N American Electric Power Co Inc 1B4S6S7G0TW5EE83BO58 025537101 28783.00000000 NS USD 2475338.00000000 0.437414040530 Long EC CORP US N 1 N N N Expeditors International of Washington Inc 984500B055A804AB6E40 302130109 23556.00000000 NS USD 2960753.64000000 0.523191262238 Long EC CORP US N 1 N N N Mondelez International Inc 549300DV9GIB88LZ5P30 609207105 57387.00000000 NS USD 3645796.11000000 0.644244304181 Long EC CORP US N 1 N N N Johnson & Johnson 549300G0CFPGEF6X2043 478160104 105768.00000000 NS USD 17901234.00000000 3.163305816989 Long EC CORP US N 1 N N N McDonald's Corp UE2136O97NLB5BYP9H04 580135101 10983.00000000 NS USD 2568813.87000000 0.453932050591 Long EC CORP US N 1 N N N NextEra Energy Inc N/A 65339F101 120425.00000000 NS USD 8817518.50000000 1.558133230505 Long EC CORP US N 1 N N N General Mills Inc 2TGYMUGI08PO8X8L6150 370334104 100557.00000000 NS USD 6321013.02000000 1.116978709704 Long EC CORP US N 1 N N N AbbVie Inc FR5LCKFTG8054YNNRU85 00287Y109 21667.00000000 NS USD 2452704.40000000 0.433414483933 Long EC CORP US N 1 N N N Thermo Fisher Scientific Inc HCHV7422L5HDJZCRFL38 883556102 6085.00000000 NS USD 2856907.50000000 0.504840734071 Long EC CORP US N 1 N N N Costco Wholesale Corp 29DX7H14B9S6O3FD6V18 22160K105 21595.00000000 NS USD 8168740.65000000 1.443488466528 Long EC CORP US N 1 N N N Everest Re Group Ltd 549300N24XF2VV0B3570 000000000 31359.00000000 NS USD 8152085.64000000 1.440545379475 Long EC CORP BM N 1 N N N Walgreens Boots Alliance Inc 549300RPTUOIXG4LIH86 931427108 45144.00000000 NS USD 2377283.04000000 0.420086864908 Long EC CORP US N 1 N N N Chubb Ltd E0JAN6VLUDI1HITHT809 000000000 32502.00000000 NS USD 5525014.98000000 0.976318840655 Long EC CORP CH N 1 N N N PNC Financial Services Group Inc/The CFGNEKW0P8842LEUIA51 693475105 24094.00000000 NS USD 4690619.92000000 0.828873879768 Long EC CORP US N 1 N N N Xcel Energy Inc LGJNMI9GH8XIDG5RCM61 98389B100 94895.00000000 NS USD 6726157.60000000 1.188571327656 Long EC CORP US N 1 N N N Comcast Corp 51M0QTTNCGUN7KFCFZ59 20030N101 90164.00000000 NS USD 5170003.76000000 0.913585229256 Long EC CORP US N 1 N N N Amdocs Ltd 549300HQV672RJ7RQV66 000000000 158402.00000000 NS USD 12371196.20000000 2.186099399771 Long EC CORP GG N 1 N N N Sun Communities Inc 549300H5GEOJYN41ZG57 866674104 20021.00000000 NS USD 3351915.82000000 0.592313066879 Long EC CORP US N 1 N N N Exelon Corp 3SOUA6IRML7435B56G12 30161N101 75413.00000000 NS USD 3402634.56000000 0.601275515237 Long EC CORP US N 1 N N N FleetCor Technologies Inc 549300DG6RR0NQSFLN74 339041105 7530.00000000 NS USD 2066533.20000000 0.365174629445 Long EC CORP US N 1 N N N Medtronic PLC 549300GX3ZBSQWUXY261 000000000 66381.00000000 NS USD 8403170.79000000 1.484914338372 Long EC CORP IE N 1 N N N PepsiCo Inc FJSUNZKFNQ5YPJ5OT455 713448108 80871.00000000 NS USD 11964055.74000000 2.114154092233 Long EC CORP US N 1 N N N Texas Instruments Inc WDJNR2L6D8RWOEB8T652 882508104 43746.00000000 NS USD 8303865.72000000 1.467366257296 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K305 7979.00000000 NS USD 18805306.15000000 3.323063333765 Long EC CORP US N 1 N N N Visa Inc 549300JZ4OKEHW3DPJ59 92826C839 17833.00000000 NS USD 4053440.90000000 0.716278731275 Long EC CORP US N 1 N N N Zoetis Inc 549300HD9Q1LOC9KLJ48 98978V103 29023.00000000 NS USD 5127783.64000000 0.906124561953 Long EC CORP US N 1 N N N J M Smucker Co/The 5493000WDH6A0LHDJD55 832696405 20321.00000000 NS USD 2708586.09000000 0.478631033721 Long EC CORP US N 1 N N N Fiserv Inc GI7UBEJLXYLGR2C7GV83 337738108 17881.00000000 NS USD 2059891.20000000 0.364000929507 Long EC CORP US N 1 N N N Procter & Gamble Co/The 2572IBTT8CCZW6AU4141 742718109 67264.00000000 NS USD 9070550.40000000 1.602846197285 Long EC CORP US N 1 N N N Old Dominion Freight Line Inc 5299009TWK32WE417T96 679580100 22287.00000000 NS USD 5916084.15000000 1.045424209609 Long EC CORP US N 1 N N N Microsoft Corp INR2EJN1ERAN0W5ZP974 594918104 78869.00000000 NS USD 19692011.92000000 3.479752058140 Long EC CORP US N 1 N N N Ingredion Inc PKSTQ48QDN0XSVS7YK88 457187102 72986.00000000 NS USD 6928560.98000000 1.224337788746 Long EC CORP US N 1 N N N Newmont Corp 549300VSP3RIX7FGDZ51 651639106 60626.00000000 NS USD 4454798.48000000 0.787202152952 Long EC CORP US N 1 N N N Johnson Controls International plc 549300XQ6S1GYKGBL205 000000000 77321.00000000 NS USD 5144939.34000000 0.909156125341 Long EC CORP IE N 1 N N N Adobe Inc FU4LY2G4933NH2E1CP29 00724F101 35198.00000000 NS USD 17760206.84000000 3.138385074900 Long EC CORP US N 1 N N N Waste Management Inc 549300YX8JIID70NFS41 94106L109 37436.00000000 NS USD 5266496.48000000 0.930636343301 Long EC CORP US N 1 N N N Alphabet Inc 5493006MHB84DD0ZWV18 02079K107 3734.00000000 NS USD 9004765.04000000 1.591221344386 Long EC CORP US N 1 N N N Sempra Energy PBBKGKLRK5S5C0Y4T545 816851109 19149.00000000 NS USD 2594498.01000000 0.458470664491 Long EC CORP US N 1 N N N Target Corp 8WDDFXB5T1Z6J0XC1L66 87612E106 46935.00000000 NS USD 10650490.20000000 1.882035484450 Long EC CORP US N 1 N N N Walmart Inc Y87794H0US1R65VBXU25 931142103 55586.00000000 NS USD 7894879.58000000 1.395094801835 Long EC CORP US N 1 N N N Public Storage 549300LMZF40TKJ6DM64 74460D109 17860.00000000 NS USD 5045092.80000000 0.891512361745 Long EC CORP US N 1 N N N CoStar Group Inc N/A 22160N109 7844.00000000 NS USD 6698776.00000000 1.183732757613 Long EC CORP US N 1 N N N Ecolab Inc 82DYEISM090VG8LTLS26 278865100 14309.00000000 NS USD 3077579.72000000 0.543835460199 Long EC CORP US N 1 N N N Mastercard Inc AR5L2ODV9HN37376R084 57636Q104 30426.00000000 NS USD 10971007.08000000 1.938673641962 Long EC CORP US N 1 N N N Republic Services Inc NKNQHM6BLECKVOQP7O46 760759100 20580.00000000 NS USD 2246924.40000000 0.397051344329 Long EC CORP US N 1 N N N US Bancorp N1GZ7BBF3NP8GI976H15 902973304 62717.00000000 NS USD 3811939.26000000 0.673603263058 Long EC CORP US N 1 N N N Evergy Inc 549300PGTHDQY6PSUI61 30034W106 51950.00000000 NS USD 3220380.50000000 0.569069616573 Long EC CORP US N 1 N N N MFS Institutional Money Market Portfolio 5L2W638H85N8T1136O07 55291X109 2752935.53400000 NS USD 2752935.53000000 0.486467970635 Long STIV RF US N 1 N N N Cable One Inc 549300648QS85T0XSH18 12685J105 4026.00000000 NS USD 7309444.56000000 1.291643274179 Long EC CORP US N 1 N N N ServiceNow Inc 549300HJTQM36M0E1G39 81762P102 4912.00000000 NS USD 2327698.56000000 0.411324850289 Long EC CORP US N 1 N N N AvalonBay Communities Inc K9G90K85RBWD2LAGQX17 053484101 16947.00000000 NS USD 3507012.18000000 0.619719960604 Long EC CORP US N 1 N N N Fidelity National Information Services Inc 6WQI0GK1PRFVBA061U48 31620M106 16663.00000000 NS USD 2482453.74000000 0.438671454501 Long EC CORP US N 1 N N N MetLife Inc C4BXATY60WC6XEOZDX54 59156R108 118653.00000000 NS USD 7755160.08000000 1.370405134793 Long EC CORP US N 1 N N N Illinois Tool Works Inc 76NA4I14SZCFAYMNSV04 452308109 11410.00000000 NS USD 2644381.60000000 0.467285534484 Long EC CORP US N 1 N N N Duke Energy Corp I1BZKREC126H0VB1BL91 26441C204 49747.00000000 NS USD 4985644.34000000 0.881007294925 Long EC CORP US N 1 N N N Facebook Inc BQ4BKCS1HXDV9HN80Z93 30303M102 11171.00000000 NS USD 3672242.83000000 0.648917672688 Long EC CORP US N 1 N N N Pfizer Inc 765LHXWGK1KXCLTFYQ30 717081103 199362.00000000 NS USD 7721290.26000000 1.364420039094 Long EC CORP US N 1 N N N Waste Connections Inc 549300HDLRTPBQU69P29 94106B101 94241.00000000 NS USD 11444627.04000000 2.022366463055 Long EC CORP CA N 1 N N N Verizon Communications Inc 2S72QS2UO2OESLG6Y829 92343V104 62226.00000000 NS USD 3515146.74000000 0.621157409048 Long EC CORP US N 1 N N N Oracle Corp 1Z4GXXU7ZHVWFCD8TV52 68389X105 41768.00000000 NS USD 3288812.32000000 0.581162122278 Long EC CORP US N 1 N N N Aon PLC 635400FALWQYX5E6QC64 000000000 23111.00000000 NS USD 5855634.07000000 1.034742147708 Long EC CORP IE N 1 N N N Allstate Corp/The OBT0W1ED8G0NWVOLOJ77 020002101 43120.00000000 NS USD 5890623.20000000 1.040925035349 Long EC CORP US N 1 N N N TE Connectivity Ltd 894500ZRIX9K13RHXR17 000000000 59093.00000000 NS USD 8017738.24000000 1.416805009849 Long EC CORP CH N 1 N N N Roper Technologies Inc 54930003T4SXCIWVXY35 776696106 5783.00000000 NS USD 2602407.83000000 0.459868399397 Long EC CORP US N 1 N N N Starbucks Corp OQSJ1DU9TAOC51A47K68 855244109 96895.00000000 NS USD 11034402.60000000 1.949876189070 Long EC CORP US N 1 N N N Northrop Grumman Corp RIMU48P07456QXSO0R61 666807102 7288.00000000 NS USD 2666460.56000000 0.471187081305 Long EC CORP US N 1 N N N Electronic Arts Inc 549300O7A67PUEYKDL45 285512109 17210.00000000 NS USD 2459825.30000000 0.434672809721 Long EC CORP US N 1 N N N McKesson Corp 549300WZWOM80UCFSF54 58155Q103 22165.00000000 NS USD 4264324.35000000 0.753543695472 Long EC CORP US N 1 N N N CACI International Inc SYRPI2D1O9WRTS2WX210 127190304 14432.00000000 NS USD 3679582.72000000 0.650214695940 Long EC CORP US N 1 N N N Verisk Analytics Inc 549300I1YSWNIRKBWP67 92345Y106 13693.00000000 NS USD 2366561.19000000 0.418192219518 Long EC CORP US N 1 N N N Apple Inc HWUPKR0MPOU8FGXBT394 037833100 37720.00000000 NS USD 4700289.20000000 0.830582526762 Long EC CORP US N 1 N N N Danaher Corp S4BKK9OTCEWQ3YHPFM11 235851102 51075.00000000 NS USD 13082350.50000000 2.311766632207 Long EC CORP US N 1 N N N STAG Industrial Inc 549300QWYX2W6FASVQ07 85254J102 92706.00000000 NS USD 3310531.26000000 0.585000050392 Long EC CORP US N 1 N N N T-Mobile US Inc 549300QHIJYOHPACPG31 872590104 94208.00000000 NS USD 13325721.60000000 2.354772450483 Long EC CORP US N 1 N N N Charter Communications Inc 0J0XRGZE3PBRFEZ7MV65 16119P108 11248.00000000 NS USD 7812073.44000000 1.380462227101 Long EC CORP US N 1 N N N Extra Space Storage Inc N/A 30225T102 18695.00000000 NS USD 2800697.95000000 0.494908011194 Long EC CORP US N 1 N N N Merck & Co Inc 4YV9Y5M8S0BRK1RP0397 58933Y105 99404.00000000 NS USD 7543769.56000000 1.333050566858 Long EC CORP US N 1 N N N Colgate-Palmolive Co YMEGZFW4SBUSS5BQXF88 194162103 30211.00000000 NS USD 2531077.58000000 0.447263715566 Long EC CORP US N 1 N N N STERIS PLC N/A 000000000 52000.00000000 NS USD 9924720.00000000 1.753785493669 Long EC CORP IE N 1 N N N S&P Global Inc Y6X4K52KMJMZE7I7MY94 78409V104 8476.00000000 NS USD 3216387.72000000 0.568364057157 Long EC CORP US N 1 N N N Eli Lilly & Co FRDRIPF3EKNDJ2CQJL29 532457108 89771.00000000 NS USD 17930859.54000000 3.168540911006 Long EC CORP US N 1 N N N Global Payments Inc 549300NOMHGVQBX6S778 37940X102 25319.00000000 NS USD 4904543.49000000 0.866676059962 Long EC CORP US N 1 N N N Amazon.com Inc ZXTILKJKG63JELOEG630 023135106 3182.00000000 NS USD 10255808.74000000 1.812291792016 Long EC CORP US N 1 N N N DTE Energy Co 549300IX8SD6XXD71I78 233331107 19645.00000000 NS USD 2710813.55000000 0.479024645534 Long EC CORP US N 1 N N N Motorola Solutions Inc 6S552MUG6KGJVEBSEC55 620076307 12872.00000000 NS USD 2642750.32000000 0.466997272931 Long EC CORP US N 1 N N N Atlassian Corp PLC 549300AGBII4MWBVJY22 000000000 29144.00000000 NS USD 6798712.32000000 1.201392386127 Long EC CORP GB N 1 N N N Eaton Corp PLC 549300VDIGTMXUNT7H71 000000000 68106.00000000 NS USD 9892396.50000000 1.748073646342 Long EC CORP IE N 1 N N N 2021-06-29 MFS SERIES TRUST I Kasey Phillips Kasey Phillips Assistant Treasurer XXXX