Form NPORT-P MFS SERIES TRUST I For: Nov 30

January 24, 2022 9:20 AM EST

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      MFS SERIES TRUST I
      811-04777
      0000798244
      549300QRB5FQ35HH3533
      111 HUNTINGTON AVENUE
      BOSTON
      
      02199
      617-954-5000
      MFS Low Volatility Equity Fund
      S000042701
      549300X3ZVIZOWLC2P38
      2022-08-31
      2021-11-30
      N
    
    
      603812350.25
      272570.59
      603539779.66
      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
      51000.56000000
      N
      
        
          
          
          
          
          
          
          
          
          
        
        
        
        
      
      
      
      
      
      
    
    
      
        Honeywell International Inc
        ISRPG12PN4EIEOEMW547
        Honeywell International Inc
        438516106
        
          
        
        11050.00000000
        NS
        USD
        2234752.00000000
        0.370274184952
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Charles River Laboratories International Inc
        549300BSQ0R4UZ5KX287
        Charles River Laboratories International Inc
        159864107
        
          
        
        7961.00000000
        NS
        USD
        2912691.07000000
        0.482601340982
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        EPAM Systems Inc
        549300XCR4R530HJP604
        EPAM Systems Inc
        29414B104
        
          
        
        10730.00000000
        NS
        USD
        6529741.50000000
        1.081907393689
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Accenture PLC
        N/A
        Accenture PLC
        000000000
        
          
        
        19170.00000000
        NS
        USD
        6851358.00000000
        1.135195761886
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        AMETEK Inc
        549300WZDEF9KKE40E98
        AMETEK Inc
        031100100
        
          
        
        21817.00000000
        NS
        USD
        2978020.50000000
        0.493425719457
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        American Electric Power Co Inc
        1B4S6S7G0TW5EE83BO58
        American Electric Power Co Inc
        025537101
        
          
        
        28361.00000000
        NS
        USD
        2298659.05000000
        0.380862890478
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Expeditors International of Washington Inc
        984500B055A804AB6E40
        Expeditors International of Washington Inc
        302130109
        
          
        
        23212.00000000
        NS
        USD
        2823043.44000000
        0.467747700340
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Mondelez International Inc
        549300DV9GIB88LZ5P30
        Mondelez International Inc
        609207105
        
          
        
        56544.00000000
        NS
        USD
        3332703.36000000
        0.552192825115
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Johnson & Johnson
        549300G0CFPGEF6X2043
        Johnson & Johnson
        478160104
        
          
        
        104216.00000000
        NS
        USD
        16250400.88000000
        2.692515295206
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        McDonald's Corp
        UE2136O97NLB5BYP9H04
        McDonald's Corp
        580135101
        
          
        
        10823.00000000
        NS
        USD
        2647305.80000000
        0.438629878131
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        UnitedHealth Group Inc
        549300GHBMY8T5GXDE41
        UnitedHealth Group Inc
        91324P102
        
          
        
        5703.00000000
        NS
        USD
        2533386.66000000
        0.419754711350
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        NextEra Energy Inc
        N/A
        NextEra Energy Inc
        65339F101
        
          
        
        99383.00000000
        NS
        USD
        8624456.74000000
        1.428979005304
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        General Mills Inc
        2TGYMUGI08PO8X8L6150
        General Mills Inc
        370334104
        
          
        
        99081.00000000
        NS
        USD
        6120233.37000000
        1.014056335018
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        AbbVie Inc
        FR5LCKFTG8054YNNRU85
        AbbVie Inc
        00287Y109
        
          
        
        21350.00000000
        NS
        USD
        2461228.00000000
        0.407798803483
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Thermo Fisher Scientific Inc
        HCHV7422L5HDJZCRFL38
        Thermo Fisher Scientific Inc
        883556102
        
          
        
        5994.00000000
        NS
        USD
        3793183.02000000
        0.628489313850
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Costco Wholesale Corp
        29DX7H14B9S6O3FD6V18
        Costco Wholesale Corp
        22160K105
        
          
        
        9859.00000000
        NS
        USD
        5317747.42000000
        0.881093110879
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Everest Re Group Ltd
        549300N24XF2VV0B3570
        Everest Re Group Ltd
        000000000
        
          
        
        30899.00000000
        NS
        USD
        7921885.62000000
        1.312570585564
        Long
        EC
        CORP
        BM
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Chubb Ltd
        E0JAN6VLUDI1HITHT809
        Chubb Ltd
        000000000
        
          
        
        32025.00000000
        NS
        USD
        5747526.75000000
        0.952302887680
        Long
        EC
        CORP
        CH
        
        N
        
        1
        
          N
          N
          N
        
      
      
        PNC Financial Services Group Inc/The
        CFGNEKW0P8842LEUIA51
        PNC Financial Services Group Inc/The
        693475105
        
          
        
        23741.00000000
        NS
        USD
        4676977.00000000
        0.774924397300
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Xcel Energy Inc
        LGJNMI9GH8XIDG5RCM61
        Xcel Energy Inc
        98389B100
        
          
        
        93501.00000000
        NS
        USD
        5958818.73000000
        0.987311678669
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Comcast Corp
        51M0QTTNCGUN7KFCFZ59
        Comcast Corp
        20030N101
        
          
        
        88842.00000000
        NS
        USD
        4440323.16000000
        0.735713420994
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Amdocs Ltd
        549300HQV672RJ7RQV66
        Amdocs Ltd
        000000000
        
          
        
        156075.00000000
        NS
        USD
        10897156.50000000
        1.805540722790
        Long
        EC
        CORP
        GG
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Sun Communities Inc
        549300H5GEOJYN41ZG57
        Sun Communities Inc
        866674104
        
          
        
        19727.00000000
        NS
        USD
        3720117.66000000
        0.616383175620
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Exelon Corp
        3SOUA6IRML7435B56G12
        Exelon Corp
        30161N101
        
          
        
        135874.00000000
        NS
        USD
        7164636.02000000
        1.187102534324
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        FleetCor Technologies Inc
        549300DG6RR0NQSFLN74
        FleetCor Technologies Inc
        339041105
        
          
        
        10431.00000000
        NS
        USD
        2160573.03000000
        0.357983533615
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Medtronic PLC
        549300GX3ZBSQWUXY261
        Medtronic PLC
        000000000
        
          
        
        65406.00000000
        NS
        USD
        6978820.20000000
        1.156314866922
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        PepsiCo Inc
        FJSUNZKFNQ5YPJ5OT455
        PepsiCo Inc
        713448108
        
          
        
        79684.00000000
        NS
        USD
        12731909.52000000
        2.109539412161
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Texas Instruments Inc
        WDJNR2L6D8RWOEB8T652
        Texas Instruments Inc
        882508104
        
          
        
        43103.00000000
        NS
        USD
        8291724.11000000
        1.373848814848
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Alphabet Inc
        5493006MHB84DD0ZWV18
        Alphabet Inc
        02079K305
        
          
        
        7860.00000000
        NS
        USD
        22306287.00000000
        3.695909988330
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Visa Inc
        549300JZ4OKEHW3DPJ59
        Visa Inc
        92826C839
        
          
        
        29724.00000000
        NS
        USD
        5759619.48000000
        0.954306521973
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Zoetis Inc
        549300HD9Q1LOC9KLJ48
        Zoetis Inc
        98978V103
        
          
        
        28596.00000000
        NS
        USD
        6349455.84000000
        1.052036013860
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        J M Smucker Co/The
        5493000WDH6A0LHDJD55
        J M Smucker Co/The
        832696405
        
          
        
        20023.00000000
        NS
        USD
        2532308.81000000
        0.419576123288
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Fiserv Inc
        GI7UBEJLXYLGR2C7GV83
        Fiserv Inc
        337738108
        
          
        
        43547.00000000
        NS
        USD
        4203156.44000000
        0.696417466031
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Procter & Gamble Co/The
        2572IBTT8CCZW6AU4141
        Procter & Gamble Co/The
        742718109
        
          
        
        66277.00000000
        NS
        USD
        9582328.66000000
        1.587688000515
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Old Dominion Freight Line Inc
        5299009TWK32WE417T96
        Old Dominion Freight Line Inc
        679580100
        
          
        
        26362.00000000
        NS
        USD
        9362991.54000000
        1.551346217025
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Microsoft Corp
        INR2EJN1ERAN0W5ZP974
        Microsoft Corp
        594918104
        
          
        
        69238.00000000
        NS
        USD
        22889390.42000000
        3.792523905034
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Ingredion Inc
        PKSTQ48QDN0XSVS7YK88
        Ingredion Inc
        457187102
        
          
        
        71915.00000000
        NS
        USD
        6697443.95000000
        1.109693872005
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Newmont Corp
        549300VSP3RIX7FGDZ51
        Newmont Corp
        651639106
        
          
        
        59736.00000000
        NS
        USD
        3280701.12000000
        0.543576617575
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Johnson Controls International plc
        549300XQ6S1GYKGBL205
        Johnson Controls International plc
        000000000
        
          
        
        76186.00000000
        NS
        USD
        5695665.36000000
        0.943710017458
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Adobe Inc
        FU4LY2G4933NH2E1CP29
        Adobe Inc
        00724F101
        
          
        
        30926.00000000
        NS
        USD
        20715781.10000000
        3.432380399461
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Waste Management Inc
        549300YX8JIID70NFS41
        Waste Management Inc
        94106L109
        
          
        
        36888.00000000
        NS
        USD
        5926794.96000000
        0.982005687071
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Alphabet Inc
        5493006MHB84DD0ZWV18
        Alphabet Inc
        02079K107
        
          
        
        3678.00000000
        NS
        USD
        10478769.12000000
        1.736218468632
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Sempra Energy
        PBBKGKLRK5S5C0Y4T545
        Sempra Energy
        816851109
        
          
        
        18867.00000000
        NS
        USD
        2261587.29000000
        0.374720501650
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Target Corp
        8WDDFXB5T1Z6J0XC1L66
        Target Corp
        87612E106
        
          
        
        61307.00000000
        NS
        USD
        14949098.88000000
        2.476903658019
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Walmart Inc
        Y87794H0US1R65VBXU25
        Walmart Inc
        931142103
        
          
        
        69346.00000000
        NS
        USD
        9752127.98000000
        1.615821907462
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Public Storage
        549300LMZF40TKJ6DM64
        Public Storage
        74460D109
        
          
        
        17598.00000000
        NS
        USD
        5761233.24000000
        0.954573904514
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        CoStar Group Inc
        N/A
        CoStar Group Inc
        22160N109
        
          
        
        40284.00000000
        NS
        USD
        3132483.84000000
        0.519018620738
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Ecolab Inc
        82DYEISM090VG8LTLS26
        Ecolab Inc
        278865100
        
          
        
        14101.00000000
        NS
        USD
        3122948.47000000
        0.517438713279
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Mastercard Inc
        AR5L2ODV9HN37376R084
        Mastercard Inc
        57636Q104
        
          
        
        29979.00000000
        NS
        USD
        9440986.68000000
        1.564269166370
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Republic Services Inc
        NKNQHM6BLECKVOQP7O46
        Republic Services Inc
        760759100
        
          
        
        20279.00000000
        NS
        USD
        2682100.54000000
        0.444394989425
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        US Bancorp
        N1GZ7BBF3NP8GI976H15
        US Bancorp
        902973304
        
          
        
        52646.00000000
        NS
        USD
        2913429.64000000
        0.482723714026
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Evergy Inc
        549300PGTHDQY6PSUI61
        Evergy Inc
        30034W106
        
          
        
        51188.00000000
        NS
        USD
        3240200.40000000
        0.536866087240
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS Institutional Money Market Portfolio
        5L2W638H85N8T1136O07
        MFS Institutional Money Market Portfolio
        55291X109
        
          
        
        1462137.39400000
        NS
        USD
        1462137.39000000
        0.242260318089
        Long
        STIV
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Cable One Inc
        549300648QS85T0XSH18
        Cable One Inc
        12685J105
        
          
        
        3967.00000000
        NS
        USD
        7029762.02000000
        1.164755374361
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        ServiceNow Inc
        549300HJTQM36M0E1G39
        ServiceNow Inc
        81762P102
        
          
        
        4840.00000000
        NS
        USD
        3134868.00000000
        0.519413650209
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        AvalonBay Communities Inc
        K9G90K85RBWD2LAGQX17
        AvalonBay Communities Inc
        053484101
        
          
        
        14073.00000000
        NS
        USD
        3361617.51000000
        0.556983586383
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Fidelity National Information Services Inc
        6WQI0GK1PRFVBA061U48
        Fidelity National Information Services Inc
        31620M106
        
          
        
        30278.00000000
        NS
        USD
        3164051.00000000
        0.524248957008
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MetLife Inc
        C4BXATY60WC6XEOZDX54
        MetLife Inc
        59156R108
        
          
        
        76832.00000000
        NS
        USD
        4506965.12000000
        0.746755271465
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Duke Energy Corp
        I1BZKREC126H0VB1BL91
        Duke Energy Corp
        26441C204
        
          
        
        49017.00000000
        NS
        USD
        4755139.17000000
        0.787875021705
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Pfizer Inc
        765LHXWGK1KXCLTFYQ30
        Pfizer Inc
        717081103
        
          
        
        196437.00000000
        NS
        USD
        10554560.01000000
        1.748776197642
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Waste Connections Inc
        549300HDLRTPBQU69P29
        Waste Connections Inc
        94106B101
        
          
        
        74049.00000000
        NS
        USD
        9852959.94000000
        1.632528670363
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        Aon PLC
        635400FALWQYX5E6QC64
        Aon PLC
        000000000
        
          
        
        22770.00000000
        NS
        USD
        6734682.90000000
        1.115863962404
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Allstate Corp/The
        OBT0W1ED8G0NWVOLOJ77
        Allstate Corp/The
        020002101
        
          
        
        36364.00000000
        NS
        USD
        3953494.08000000
        0.655051118954
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Landstar System Inc
        254900CUQXQRL09MEI52
        Landstar System Inc
        515098101
        
          
        
        15929.00000000
        NS
        USD
        2684832.95000000
        0.444847720147
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        TE Connectivity Ltd
        894500ZRIX9K13RHXR17
        TE Connectivity Ltd
        000000000
        
          
        
        58227.00000000
        NS
        USD
        8962882.11000000
        1.485052421076
        Long
        EC
        CORP
        CH
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Roper Technologies Inc
        54930003T4SXCIWVXY35
        Roper Technologies Inc
        776696106
        
          
        
        5697.00000000
        NS
        USD
        2644262.55000000
        0.438125644591
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Starbucks Corp
        OQSJ1DU9TAOC51A47K68
        Starbucks Corp
        855244109
        
          
        
        106194.00000000
        NS
        USD
        11643110.16000000
        1.929137159204
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Emerson Electric Co
        FGLT0EWZSUIRRITFOA30
        Emerson Electric Co
        291011104
        
          
        
        26779.00000000
        NS
        USD
        2352267.36000000
        0.389745206409
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        JB Hunt Transport Services Inc
        549300XCD1MPI1C5GK90
        JB Hunt Transport Services Inc
        445658107
        
          
        
        15815.00000000
        NS
        USD
        3023195.40000000
        0.500910710757
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        AutoZone Inc
        GA3JGKJ41LJKXDN23E90
        AutoZone Inc
        053332102
        
          
        
        1686.00000000
        NS
        USD
        3063580.02000000
        0.507602004581
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Northrop Grumman Corp
        RIMU48P07456QXSO0R61
        Northrop Grumman Corp
        666807102
        
          
        
        7182.00000000
        NS
        USD
        2505081.60000000
        0.415064869694
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Electronic Arts Inc
        549300O7A67PUEYKDL45
        Electronic Arts Inc
        285512109
        
          
        
        16958.00000000
        NS
        USD
        2106522.76000000
        0.349027989702
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        McKesson Corp
        549300WZWOM80UCFSF54
        McKesson Corp
        58155Q103
        
          
        
        15553.00000000
        NS
        USD
        3371268.28000000
        0.558582614372
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        CACI International Inc
        SYRPI2D1O9WRTS2WX210
        CACI International Inc
        127190304
        
          
        
        14219.00000000
        NS
        USD
        3688835.17000000
        0.611200006083
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Verisk Analytics Inc
        549300I1YSWNIRKBWP67
        Verisk Analytics Inc
        92345Y106
        
          
        
        13492.00000000
        NS
        USD
        3033946.04000000
        0.502691975284
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Kroger Co/The
        6CPEOKI6OYJ13Q6O7870
        Kroger Co/The
        501044101
        
          
        
        116312.00000000
        NS
        USD
        4830437.36000000
        0.800351115666
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Apple Inc
        HWUPKR0MPOU8FGXBT394
        Apple Inc
        037833100
        
          
        
        34864.00000000
        NS
        USD
        5763019.20000000
        0.954869818729
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Danaher Corp
        S4BKK9OTCEWQ3YHPFM11
        Danaher Corp
        235851102
        
          
        
        50324.00000000
        NS
        USD
        16186211.36000000
        2.681879787462
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        STAG Industrial Inc
        549300QWYX2W6FASVQ07
        STAG Industrial Inc
        85254J102
        
          
        
        91346.00000000
        NS
        USD
        3980858.68000000
        0.659585136582
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        T-Mobile US Inc
        549300QHIJYOHPACPG31
        T-Mobile US Inc
        872590104
        
          
        
        78634.00000000
        NS
        USD
        8556165.54000000
        1.417663893640
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Charter Communications Inc
        0J0XRGZE3PBRFEZ7MV65
        Charter Communications Inc
        16119P108
        
          
        
        12263.00000000
        NS
        USD
        7925331.64000000
        1.313141553729
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Extra Space Storage Inc
        N/A
        Extra Space Storage Inc
        30225T102
        
          
        
        18421.00000000
        NS
        USD
        3684200.00000000
        0.610432008653
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Merck & Co Inc
        4YV9Y5M8S0BRK1RP0397
        Merck & Co Inc
        58933Y105
        
          
        
        97944.00000000
        NS
        USD
        7336985.04000000
        1.215658898926
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Colgate-Palmolive Co
        YMEGZFW4SBUSS5BQXF88
        Colgate-Palmolive Co
        194162103
        
          
        
        70211.00000000
        NS
        USD
        5267229.22000000
        0.872722792682
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        STERIS PLC
        N/A
        STERIS PLC
        000000000
        
          
        
        51236.00000000
        NS
        USD
        11196603.08000000
        1.855155775532
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        S&P Global Inc
        Y6X4K52KMJMZE7I7MY94
        S&P Global Inc
        78409V104
        
          
        
        8352.00000000
        NS
        USD
        3806256.96000000
        0.630655524006
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Eli Lilly & Co
        FRDRIPF3EKNDJ2CQJL29
        Eli Lilly & Co
        532457108
        
          
        
        74048.00000000
        NS
        USD
        18366865.92000000
        3.043190612944
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Global Payments Inc
        549300NOMHGVQBX6S778
        Global Payments Inc
        37940X102
        
          
        
        24948.00000000
        NS
        USD
        2969809.92000000
        0.492065315342
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Amazon.com Inc
        ZXTILKJKG63JELOEG630
        Amazon.com Inc
        023135106
        
          
        
        3480.00000000
        NS
        USD
        12204603.60000000
        2.022170536443
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        DTE Energy Co
        549300IX8SD6XXD71I78
        DTE Energy Co
        233331107
        
          
        
        34507.00000000
        NS
        USD
        3738488.38000000
        0.619427004812
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Motorola Solutions Inc
        6S552MUG6KGJVEBSEC55
        Motorola Solutions Inc
        620076307
        
          
        
        25215.00000000
        NS
        USD
        6383933.70000000
        1.057748621573
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Atlassian Corp PLC
        549300AGBII4MWBVJY22
        Atlassian Corp PLC
        000000000
        
          
        
        27526.00000000
        NS
        USD
        10358584.32000000
        1.716305149900
        Long
        EC
        CORP
        GB
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Eaton Corp PLC
        549300VDIGTMXUNT7H71
        Eaton Corp PLC
        000000000
        
          
        
        67106.00000000
        NS
        USD
        10875198.36000000
        1.801902496986
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
    
    
      
    
    
      2021-12-23
      MFS SERIES TRUST I
      Kasey Phillips
      Kasey Phillips
      Assistant Treasurer
    
  
  XXXX



Quarterly Report
November 30, 2021
MFS®  Low Volatility
Equity Fund
LVU-Q1

Portfolio of Investments
11/30/21 (unaudited)
The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.
Issuer     Shares/Par Value ($)
Common Stocks – 99.6%
Aerospace & Defense – 1.4%  
CACI International, Inc., “A” (a)   14,219 $3,688,835
Honeywell International, Inc.   11,050 2,234,752
Northrop Grumman Corp.   7,182 2,505,082
        $8,428,669
Business Services – 6.0%  
Accenture PLC, “A”   19,170 $6,851,358
Amdocs Ltd.   156,075 10,897,157
CoStar Group, Inc. (a)   40,284 3,132,484
Fidelity National Information Services, Inc.   30,278 3,164,051
Fiserv, Inc. (a)   43,547 4,203,156
FleetCor Technologies, Inc. (a)   10,431 2,160,573
Global Payments, Inc.   24,948 2,969,810
Verisk Analytics, Inc., “A”   13,492 3,033,946
        $36,412,535
Cable TV – 3.2%  
Cable One, Inc.   3,967 $7,029,762
Charter Communications, Inc., “A” (a)   12,263 7,925,332
Comcast Corp., “A”   88,842 4,440,323
        $19,395,417
Computer Software – 8.9%  
Adobe Systems, Inc. (a)   30,926 $20,715,781
Atlassian Corp. PLC, “A” (a)   27,526 10,358,584
Microsoft Corp.   69,238 22,889,391
        $53,963,756
Computer Software - Systems – 2.6%  
Apple, Inc.   34,864 $5,763,019
EPAM Systems, Inc. (a)   10,730 6,529,742
ServiceNow, Inc. (a)   4,840 3,134,868
        $15,427,629
Construction – 0.6%  
AvalonBay Communities, Inc., REIT   14,073 $3,361,617
Consumer Products – 2.5%  
Colgate-Palmolive Co.   70,211 $5,267,229
Procter & Gamble Co.   66,277 9,582,329
        $14,849,558
Electrical Equipment – 3.3%  
AMETEK, Inc.   21,817 $2,978,021
Emerson Electric Co.   26,779 2,352,267
Johnson Controls International PLC   76,186 5,695,665
TE Connectivity Ltd.   58,227 8,962,882
        $19,988,835
Electronics – 1.4%  
Texas Instruments, Inc.   43,103 $8,291,724
Food & Beverages – 5.2%  
General Mills, Inc.   99,081 $6,120,233
Ingredion, Inc.   71,915 6,697,444
J.M. Smucker Co.   20,023 2,532,309
1

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Food & Beverages – continued  
Mondelez International, Inc.   56,544 $3,332,703
PepsiCo, Inc.   79,684 12,731,910
        $31,414,599
Food & Drug Stores – 2.4%  
Kroger Co.   116,312 $4,830,437
Wal-Mart Stores, Inc.   69,346 9,752,128
        $14,582,565
General Merchandise – 0.9%  
Costco Wholesale Corp.   9,859 $5,317,747
Health Maintenance Organizations – 0.4%  
UnitedHealth Group, Inc.   5,703 $2,533,387
Insurance – 4.8%  
Allstate Corp.   36,364 $3,953,494
Aon PLC   22,770 6,734,683
Chubb Ltd.   32,025 5,747,527
Everest Re Group Ltd.   30,899 7,921,885
MetLife, Inc.   76,832 4,506,965
        $28,864,554
Internet – 5.4%  
Alphabet, Inc., “A” (a)   7,860 $22,306,287
Alphabet, Inc., “C” (a)   3,678 10,478,769
        $32,785,056
Leisure & Toys – 0.4%  
Electronic Arts, Inc.   16,958 $2,106,523
Machinery & Tools – 2.2%  
Eaton Corp. PLC   67,106 $10,875,198
Roper Technologies, Inc.   5,697 2,644,263
        $13,519,461
Major Banks – 0.8%  
PNC Financial Services Group, Inc.   23,741 $4,676,977
Medical & Health Technology & Services – 1.0%  
Charles River Laboratories International, Inc. (a)   7,961 $2,912,691
McKesson Corp.   15,553 3,371,268
        $6,283,959
Medical Equipment – 6.3%  
Danaher Corp.   50,324 $16,186,212
Medtronic PLC   65,406 6,978,820
STERIS PLC   51,236 11,196,603
Thermo Fisher Scientific, Inc.   5,994 3,793,183
        $38,154,818
Network & Telecom – 1.1%  
Motorola Solutions, Inc.   25,215 $6,383,934
Other Banks & Diversified Financials – 3.6%  
Mastercard, Inc., “A”   29,979 $9,440,987
S&P Global, Inc.   8,352 3,806,257
U.S. Bancorp   52,646 2,913,430
2

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Other Banks & Diversified Financials – continued  
Visa, Inc., “A”   29,724 $5,759,619
        $21,920,293
Pharmaceuticals – 10.2%  
AbbVie, Inc.   21,350 $2,461,228
Eli Lilly & Co.   74,048 18,366,866
Johnson & Johnson   104,216 16,250,401
Merck & Co., Inc.   97,944 7,336,985
Pfizer, Inc.   196,437 10,554,560
Zoetis, Inc.   28,596 6,349,456
        $61,319,496
Pollution Control – 3.1%  
Republic Services, Inc.   20,279 $2,682,100
Waste Connections, Inc.   74,049 9,852,960
Waste Management, Inc.   36,888 5,926,795
        $18,461,855
Precious Metals & Minerals – 0.5%  
Newmont Corp.   59,736 $3,280,701
Real Estate – 2.8%  
Extra Space Storage, Inc., REIT   18,421 $3,684,200
Public Storage, Inc., REIT   17,598 5,761,233
STAG Industrial, Inc., REIT   91,346 3,980,859
Sun Communities, Inc., REIT   19,727 3,720,118
        $17,146,410
Restaurants – 2.4%  
McDonald's Corp.   10,823 $2,647,306
Starbucks Corp.   106,194 11,643,110
        $14,290,416
Specialty Chemicals – 0.5%  
Ecolab, Inc.   14,101 $3,122,948
Specialty Stores – 5.0%  
Amazon.com, Inc. (a)   3,480 $12,204,603
AutoZone, Inc. (a)   1,686 3,063,580
Target Corp.   61,307 14,949,099
        $30,217,282
Telecommunications - Wireless – 1.4%  
T-Mobile USA, Inc. (a)   78,634 $8,556,166
Trucking – 3.0%  
Expeditors International of Washington, Inc.   23,212 $2,823,043
J.B. Hunt Transport Services, Inc.   15,815 3,023,195
Landstar System, Inc.   15,929 2,684,833
Old Dominion Freight Line, Inc.   26,362 9,362,992
        $17,894,063
Utilities - Electric Power – 6.3%  
American Electric Power Co., Inc.   28,361 $2,298,659
DTE Energy Co.   34,507 3,738,488
Duke Energy Corp.   49,017 4,755,139
Evergy, Inc.   51,188 3,240,201
Exelon Corp.   135,874 7,164,636
NextEra Energy, Inc.   99,383 8,624,457
3

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Utilities - Electric Power – continued  
Sempra Energy   18,867 $2,261,587
Xcel Energy, Inc.   93,501 5,958,819
        $38,041,986
Total Common Stocks   $600,994,936
Investment Companies (h) – 0.2%
Money Market Funds – 0.2%  
MFS Institutional Money Market Portfolio, 0.05% (v)     1,462,234 $1,462,234
 
Other Assets, Less Liabilities – 0.2%   1,176,177
Net Assets – 100.0% $603,633,347
(a) Non-income producing security.      
(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated issuers and in unaffiliated issuers were $1,462,234 and $600,994,936, respectively.      
(v) Affiliated issuer that is available only to investment companies managed by MFS. The rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.      
The following abbreviations are used in this report and are defined:
REIT Real Estate Investment Trust
See attached supplemental information. For more information see notes to financial statements as disclosed in the most recent semiannual or annual report.
4

Supplemental Information
11/30/21 (unaudited)
The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.
(1) Investment Valuations
Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.
The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund’s investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under the fund’s valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. In addition, investments may be valued at fair value if the adviser determines that an investment’s value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of the fund’s net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund’s net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund’s foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund’s net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund’s net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.
Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of November 30, 2021 in valuing the fund's assets and liabilities:
Financial Instruments Level 1 Level 2 Level 3 Total
Equity Securities $600,994,936 $— $— $600,994,936
Mutual Funds 1,462,234 1,462,234
Total $602,457,170 $— $— $602,457,170
For further information regarding security characteristics, see the Portfolio of Investments.
(2) Investments in Affiliated Issuers
An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. For the purposes of this report, the following were affiliated issuers:
Affiliated Issuers Beginning
Value
Purchases Sales
Proceeds
Realized
Gain
(Loss)
Change in
Unrealized
Appreciation or
Depreciation
Ending
Value
MFS Institutional Money Market Portfolio $6,858,031 $22,847,343 $28,243,140 $— $— $1,462,234
5

Supplemental Information (unaudited) – continued
Affiliated Issuers Dividend
Income
Capital Gain
Distributions
MFS Institutional Money Market Portfolio $351 $—
(3) Impacts of COVID-19
The pandemic related to the global spread of novel coronavirus disease (COVID-19), which was first detected in December 2019, has resulted in significant disruptions to global business activity and the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general. Multiple surges in cases globally, the availability and widespread adoption of vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic including impacts to the prices and liquidity of the fund's investments and the fund's performance.
6


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