NPORT-P
    false
    
      
      
        
          0000798244
          XXXXXXXX
        
      
      
      
      
        S000000769
        C000002270
        C000002265
        C000002268
        C000002259
        C000002262
        C000002264
        C000033014
        C000002261
        C000002266
        C000002263
        C000002260
        C000002271
      
      
      
    
  
  
    
      MFS SERIES TRUST I
      811-04777
      0000798244
      549300QRB5FQ35HH3533
      111 HUNTINGTON AVENUE
      BOSTON
      
      02199
      617-954-5000
      MFS Value Fund
      S000000769
      HV6C0RMURVKFUQ3UTB42
      2022-08-31
      2021-11-30
      N
    
    
      64383745254.95
      69045881.24
      64314699373.71
      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
      5111311.60000000
      N
      
        
          
          
          
          
          
          
          
          
          
          
          
          
        
        
        
        
      
      
      
      
      
      
    
    
      
        Honeywell International Inc
        ISRPG12PN4EIEOEMW547
        Honeywell International Inc
        438516106
        
          
        
        7265036.00000000
        NS
        USD
        1469280880.64000000
        2.284517995027
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        BlackRock Inc
        549300LRIF3NWCU26A80
        BlackRock Inc
        09247X101
        
          
        
        1098700.00000000
        NS
        USD
        993895007.00000000
        1.545362128220
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Accenture PLC
        N/A
        Accenture PLC
        000000000
        
          
        
        4668404.00000000
        NS
        USD
        1668487589.60000000
        2.594255443697
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        American Electric Power Co Inc
        1B4S6S7G0TW5EE83BO58
        American Electric Power Co Inc
        025537101
        
          
        
        5182839.00000000
        NS
        USD
        420069100.95000000
        0.653146333638
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Progressive Corp/The
        529900TACNVLY9DCR586
        Progressive Corp/The
        743315103
        
          
        
        11226089.00000000
        NS
        USD
        1043352711.66000000
        1.622261663072
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Dominion Energy Inc
        ILUL7B6Z54MRYCF6H308
        Dominion Energy Inc
        25746U109
        
          
        
        11788794.00000000
        NS
        USD
        839362132.80000000
        1.305085992741
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Union Pacific Corp
        549300LMMRSZZCZ8CL11
        Union Pacific Corp
        907818108
        
          
        
        5024992.00000000
        NS
        USD
        1184089114.88000000
        1.841086293507
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Johnson & Johnson
        549300G0CFPGEF6X2043
        Johnson & Johnson
        478160104
        
          
        
        13342936.00000000
        NS
        USD
        2080564010.48000000
        3.234974322729
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Philip Morris International Inc
        HL3H1H2BGXWVG3BSWR90
        Philip Morris International Inc
        718172109
        
          
        
        2500762.00000000
        NS
        USD
        214915486.28000000
        0.334162311839
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Thermo Fisher Scientific Inc
        HCHV7422L5HDJZCRFL38
        Thermo Fisher Scientific Inc
        883556102
        
          
        
        2239406.00000000
        NS
        USD
        1417163298.98000000
        2.203482738441
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Masco Corp
        5GCSNMQXHEYA1JO8QN11
        Masco Corp
        574599106
        
          
        
        8036738.00000000
        NS
        USD
        529621034.20000000
        0.823483650483
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        EOG Resources Inc
        XWTZDRYZPBUHIQBKDB46
        EOG Resources Inc
        26875P101
        
          
        
        4533428.00000000
        NS
        USD
        394408236.00000000
        0.613247422192
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Citigroup Inc
        6SHGI4ZSSLCXXQSBB395
        Citigroup Inc
        172967424
        
          
        
        17976275.00000000
        NS
        USD
        1145088717.50000000
        1.780446349980
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Chubb Ltd
        E0JAN6VLUDI1HITHT809
        Chubb Ltd
        000000000
        
          
        
        7556110.00000000
        NS
        USD
        1356095061.70000000
        2.108530514649
        Long
        EC
        CORP
        CH
        
        N
        
        1
        
          N
          N
          N
        
      
      
        PNC Financial Services Group Inc/The
        CFGNEKW0P8842LEUIA51
        PNC Financial Services Group Inc/The
        693475105
        
          
        
        4266928.00000000
        NS
        USD
        840584816.00000000
        1.306987087221
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Xcel Energy Inc
        LGJNMI9GH8XIDG5RCM61
        Xcel Energy Inc
        98389B100
        
          
        
        4544843.00000000
        NS
        USD
        289642844.39000000
        0.450352481175
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Comcast Corp
        51M0QTTNCGUN7KFCFZ59
        Comcast Corp
        20030N101
        
          
        
        34887602.00000000
        NS
        USD
        1743682347.96000000
        2.711172352416
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        PPG Industries Inc
        549300BKPEP01R3V6C59
        PPG Industries Inc
        693506107
        
          
        
        6793344.00000000
        NS
        USD
        1047329844.48000000
        1.628445525950
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Marriott International Inc/MD
        225YDZ14ZO8E1TXUSU86
        Marriott International Inc/MD
        571903202
        
          
        
        2666509.00000000
        NS
        USD
        393470068.04000000
        0.611788707514
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Moody's Corp
        549300GCEDD8YCF5WU84
        Moody's Corp
        615369105
        
          
        
        854501.00000000
        NS
        USD
        333802270.64000000
        0.519013963977
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Medtronic PLC
        549300GX3ZBSQWUXY261
        Medtronic PLC
        000000000
        
          
        
        12559225.00000000
        NS
        USD
        1340069307.50000000
        2.083612798550
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Truist Financial Corp
        549300DRQQI75D2JP341
        Truist Financial Corp
        89832Q109
        
          
        
        8736766.00000000
        NS
        USD
        518177591.46000000
        0.805690761996
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Reckitt Benckiser Group PLC
        5493003JFSMOJG48V108
        Reckitt Benckiser Group PLC
        000000000
        
          
        
        3928162.00000000
        NS
        
        318472196.80000000
        0.495177929619
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        PepsiCo Inc
        FJSUNZKFNQ5YPJ5OT455
        PepsiCo Inc
        713448108
        
          
        
        4321777.00000000
        NS
        USD
        690533529.06000000
        1.073679167879
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Texas Instruments Inc
        WDJNR2L6D8RWOEB8T652
        Texas Instruments Inc
        882508104
        
          
        
        8523009.00000000
        NS
        USD
        1639571241.33000000
        2.549294729347
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Southern Co/The
        549300FC3G3YU2FBZD92
        Southern Co/The
        842587107
        
          
        
        16156464.00000000
        NS
        USD
        987159950.40000000
        1.534890095130
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Roche Holding AG
        549300U41AUUVOAAOB37
        Roche Holding AG
        000000000
        
          
        
        564650.00000000
        NS
        
        221204043.90000000
        0.343940103979
        Long
        EC
        CORP
        CH
        N
        
        1
        
          N
          N
          N
        
      
      
        Boston Scientific Corp
        Y6ZDD9FP4P8JSSJMW954
        Boston Scientific Corp
        101137107
        
          
        
        14370458.00000000
        NS
        USD
        547083336.06000000
        0.850634989182
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Archer-Daniels-Midland Co
        549300LO13MQ9HYSTR83
        Archer-Daniels-Midland Co
        039483102
        
          
        
        3681787.00000000
        NS
        USD
        229043969.27000000
        0.356130047252
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        J M Smucker Co/The
        5493000WDH6A0LHDJD55
        J M Smucker Co/The
        832696405
        
          
        
        629355.00000000
        NS
        USD
        79594526.85000000
        0.123757908573
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        NXP Semiconductors NV
        724500M9BY5293JDF951
        NXP Semiconductors NV
        000000000
        
          
        
        2670486.00000000
        NS
        USD
        596479752.96000000
        0.927439230484
        Long
        EC
        CORP
        NL
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Fiserv Inc
        GI7UBEJLXYLGR2C7GV83
        Fiserv Inc
        337738108
        
          
        
        3529563.00000000
        NS
        USD
        340673420.76000000
        0.529697602690
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Lockheed Martin Corp
        DPRBOZP0K5RM2YE8UU08
        Lockheed Martin Corp
        539830109
        
          
        
        1476886.00000000
        NS
        USD
        492275641.52000000
        0.765416998468
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Lowe's Cos Inc
        WAFCR4OKGSC504WU3E95
        Lowe's Cos Inc
        548661107
        
          
        
        4709127.00000000
        NS
        USD
        1151805372.93000000
        1.790889771927
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Trane Technologies PLC
        549300BURLR9SLYY2705
        Trane Technologies PLC
        000000000
        
          
        
        4124986.00000000
        NS
        USD
        769928636.90000000
        1.197127008906
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Chevron Corp
        N/A
        Chevron Corp
        166764100
        
          
        
        2600589.00000000
        NS
        USD
        293528480.43000000
        0.456394079873
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Johnson Controls International plc
        549300XQ6S1GYKGBL205
        Johnson Controls International plc
        000000000
        
          
        
        13021923.00000000
        NS
        USD
        973518963.48000000
        1.513680345177
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Cigna Corp
        549300VIWYMSIGT1U456
        Cigna Corp
        125523100
        
          
        
        5725900.00000000
        NS
        USD
        1098800210.00000000
        1.708474455606
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        DuPont de Nemours Inc
        5493004JF0SDFLM8GD76
        DuPont de Nemours Inc
        26614N102
        
          
        
        8707330.00000000
        NS
        USD
        643994126.80000000
        1.001317168658
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Marsh & McLennan Cos Inc
        549300XMP3KDCKJXIU47
        Marsh & McLennan Cos Inc
        571748102
        
          
        
        8693257.00000000
        NS
        USD
        1425868013.14000000
        2.217017302459
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Public Storage
        549300LMZF40TKJ6DM64
        Public Storage
        74460D109
        
          
        
        833539.00000000
        NS
        USD
        272883997.82000000
        0.424294913102
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Stanley Black & Decker Inc
        549300DJ09SMTO561131
        Stanley Black & Decker Inc
        854502101
        
          
        
        3642743.00000000
        NS
        USD
        636605766.68000000
        0.989829343648
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        PACCAR Inc
        KDTEY8BWE486IKZ3CC07
        PACCAR Inc
        693718108
        
          
        
        2760588.00000000
        NS
        USD
        230288250.96000000
        0.358064724242
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Nestle SA
        KY37LUS27QQX7BB93L28
        Nestle SA
        000000000
        
          
        
        8228697.00000000
        NS
        
        1057661615.38000000
        1.644509926470
        Long
        EC
        CORP
        CH
        N
        
        1
        
          N
          N
          N
        
      
      
        US Bancorp
        N1GZ7BBF3NP8GI976H15
        US Bancorp
        902973304
        
          
        
        13616984.00000000
        NS
        USD
        753563894.56000000
        1.171682215571
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Intel Corp
        KNX4USFCNGPY45LOCE31
        Intel Corp
        458140100
        
          
        
        9069539.00000000
        NS
        USD
        446221318.80000000
        0.693809227354
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Abbott Laboratories
        HQD377W2YR662HK5JX27
        Abbott Laboratories
        002824100
        
          
        
        8514872.00000000
        NS
        USD
        1070915451.44000000
        1.665117713164
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS Institutional Money Market Portfolio
        5L2W638H85N8T1136O07
        MFS Institutional Money Market Portfolio
        55291X109
        
          
        
        765911440.37000000
        NS
        USD
        765911440.37000000
        1.190880852788
        Long
        STIV
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Goldman Sachs Group Inc/The
        784F5XWPLTWKTBV3E584
        Goldman Sachs Group Inc/The
        38141G104
        
          
        
        2087946.00000000
        NS
        USD
        795486546.54000000
        1.236865839825
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Fidelity National Information Services Inc
        6WQI0GK1PRFVBA061U48
        Fidelity National Information Services Inc
        31620M106
        
          
        
        5037259.00000000
        NS
        USD
        526393565.50000000
        0.818465406238
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Sherwin-Williams Co/The
        Z15BMIOX8DDH0X2OBP21
        Sherwin-Williams Co/The
        824348106
        
          
        
        2695941.00000000
        NS
        USD
        893003496.84000000
        1.388490509224
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Analog Devices Inc
        GYVOE5EZ4GDAVTU4CQ61
        Analog Devices Inc
        032654105
        
          
        
        2853783.00000000
        NS
        USD
        514394385.75000000
        0.799808427558
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Illinois Tool Works Inc
        76NA4I14SZCFAYMNSV04
        Illinois Tool Works Inc
        452308109
        
          
        
        4694200.00000000
        NS
        USD
        1089758530.00000000
        1.694415958734
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Duke Energy Corp
        I1BZKREC126H0VB1BL91
        Duke Energy Corp
        26441C204
        
          
        
        13054233.00000000
        NS
        USD
        1266391143.33000000
        1.969053973138
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Pfizer Inc
        765LHXWGK1KXCLTFYQ30
        Pfizer Inc
        717081103
        
          
        
        24340052.00000000
        NS
        USD
        1307790993.96000000
        2.033424717358
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Raytheon Technologies Corp
        I07WOS4YJ0N7YRFE7309
        Raytheon Technologies Corp
        75513E101
        
          
        
        5895821.00000000
        NS
        USD
        477089835.32000000
        0.741805279299
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        KKR & Co Inc
        549300JOHU21WRN2Z451
        KKR & Co Inc
        48251W104
        
          
        
        3847518.00000000
        NS
        USD
        286447715.10000000
        0.445384520007
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Aon PLC
        635400FALWQYX5E6QC64
        Aon PLC
        000000000
        
          
        
        5938266.00000000
        NS
        USD
        1756360934.82000000
        2.730885710301
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Canadian National Railway Co
        3SU7BEP7TH9YEQOZCS77
        Canadian National Railway Co
        136375102
        
          
        
        3224776.00000000
        NS
        USD
        408159898.32000000
        0.634629256289
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        International Flavors & Fragrances Inc
        BZLRL03D3GPGMOGFO832
        International Flavors & Fragrances Inc
        459506101
        
          
        
        1624774.00000000
        NS
        USD
        230994119.58000000
        0.359162247245
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Morgan Stanley
        IGJSJL3JD5P30I6NJZ34
        Morgan Stanley
        617446448
        
          
        
        11499922.00000000
        NS
        USD
        1090422604.04000000
        1.695448497246
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Pioneer Natural Resources Co
        FY8JBF7CCL2VE4F1B628
        Pioneer Natural Resources Co
        723787107
        
          
        
        1913752.00000000
        NS
        USD
        341260256.64000000
        0.530610047101
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Diageo PLC
        213800ZVIELEA55JMJ32
        Diageo PLC
        000000000
        
          
        
        19540269.00000000
        NS
        
        984816038.86000000
        1.531245653715
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        Otis Worldwide Corp
        549300ZLBKR8VSU25153
        Otis Worldwide Corp
        68902V107
        
          
        
        2521203.00000000
        NS
        USD
        202704721.20000000
        0.315176348756
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Northrop Grumman Corp
        RIMU48P07456QXSO0R61
        Northrop Grumman Corp
        666807102
        
          
        
        3664659.00000000
        NS
        USD
        1278233059.20000000
        1.987466429365
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        McKesson Corp
        549300WZWOM80UCFSF54
        McKesson Corp
        58155Q103
        
          
        
        2897922.00000000
        NS
        USD
        628153572.72000000
        0.976687411799
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Danaher Corp
        S4BKK9OTCEWQ3YHPFM11
        Danaher Corp
        235851102
        
          
        
        3552378.00000000
        NS
        USD
        1142586859.92000000
        1.776556325453
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Nasdaq Inc
        549300L8X1Q78ERXFD06
        Nasdaq Inc
        631103108
        
          
        
        5481315.00000000
        NS
        USD
        1113967647.45000000
        1.732057614041
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Equifax Inc
        5493004MCF8JDC86VS77
        Equifax Inc
        294429105
        
          
        
        2848541.00000000
        NS
        USD
        793745949.65000000
        1.234159464911
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Kimberly-Clark Corp
        MP3J6QPYPGN75NVW2S34
        Kimberly-Clark Corp
        494368103
        
          
        
        3990315.00000000
        NS
        USD
        519977947.65000000
        0.808490053927
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Travelers Cos Inc/The
        549300Y650407RU8B149
        Travelers Cos Inc/The
        89417E109
        
          
        
        5198093.00000000
        NS
        USD
        763859766.35000000
        1.187690798197
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Merck & Co Inc
        4YV9Y5M8S0BRK1RP0397
        Merck & Co Inc
        58933Y105
        
          
        
        12234107.00000000
        NS
        USD
        916456955.37000000
        1.424957224855
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Colgate-Palmolive Co
        YMEGZFW4SBUSS5BQXF88
        Colgate-Palmolive Co
        194162103
        
          
        
        5689044.00000000
        NS
        USD
        426792080.88000000
        0.663599589263
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        JPMorgan Chase & Co
        8I5DZWZKVSZI1NUHU748
        JPMorgan Chase & Co
        46625H100
        
          
        
        17774539.00000000
        NS
        USD
        2823130029.37000000
        4.389556441779
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        American Express Co
        R4PP93JZOLY261QX3811
        American Express Co
        025816109
        
          
        
        6176466.00000000
        NS
        USD
        940675771.80000000
        1.462613960665
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Eaton Corp PLC
        549300VDIGTMXUNT7H71
        Eaton Corp PLC
        000000000
        
          
        
        6725410.00000000
        NS
        USD
        1089919944.60000000
        1.694666934951
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        ConocoPhillips
        WPTL2Z3FIYTHSP5V2253
        ConocoPhillips
        20825C104
        
          
        
        8632007.00000000
        NS
        USD
        605362650.91000000
        0.941250844371
        Long
        EC
        CORP
        US
        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®  Value Fund
EIF-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 – 98.6%
Aerospace & Defense – 5.8%  
Honeywell International, Inc.   7,265,036 $1,469,280,881
Lockheed Martin Corp.   1,476,886 492,275,642
Northrop Grumman Corp.   3,664,659 1,278,233,059
Raytheon Technologies Corp.   5,895,821 477,089,835
        $3,716,879,417
Alcoholic Beverages – 1.5%  
Diageo PLC   19,540,269 $984,816,039
Brokerage & Asset Managers – 3.7%  
BlackRock, Inc.   1,098,700 $993,895,007
KKR & Co., Inc.   3,847,518 286,447,715
NASDAQ, Inc.   5,481,315 1,113,967,647
        $2,394,310,369
Business Services – 5.2%  
Accenture PLC, “A”   4,668,404 $1,668,487,589
Equifax, Inc.   2,848,541 793,745,950
Fidelity National Information Services, Inc.   5,037,259 526,393,565
Fiserv, Inc. (a)   3,529,563 340,673,421
        $3,329,300,525
Cable TV – 2.7%  
Comcast Corp., “A”   34,887,602 $1,743,682,348
Chemicals – 1.6%  
PPG Industries, Inc.   6,793,344 $1,047,329,844
Construction – 3.5%  
Masco Corp.   8,036,738 $529,621,034
Otis Worldwide Corp.   2,521,203 202,704,721
Sherwin-Williams Co.   2,695,941 893,003,497
Stanley Black & Decker, Inc.   3,642,743 636,605,767
        $2,261,935,019
Consumer Products – 2.3%  
Colgate-Palmolive Co.   5,689,044 $426,792,081
International Flavors & Fragrances, Inc.   1,624,774 230,994,119
Kimberly-Clark Corp.   3,990,315 519,977,948
Reckitt Benckiser Group PLC   3,928,162 318,472,197
        $1,496,236,345
Electrical Equipment – 1.5%  
Johnson Controls International PLC   13,021,923 $973,518,963
Electronics – 5.0%  
Analog Devices, Inc.   2,853,783 $514,394,386
Intel Corp.   9,069,539 446,221,319
NXP Semiconductors N.V.   2,670,486 596,479,753
Texas Instruments, Inc.   8,523,009 1,639,571,241
        $3,196,666,699
1

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Energy - Independent – 2.1%  
ConocoPhillips   8,632,007 $605,362,651
EOG Resources, Inc.   4,533,428 394,408,236
Pioneer Natural Resources Co.   1,913,752 341,260,257
        $1,341,031,144
Energy - Integrated – 0.5%  
Chevron Corp.   2,600,589 $293,528,480
Food & Beverages – 3.2%  
Archer Daniels Midland Co.   3,681,787 $229,043,969
J.M. Smucker Co.   599,598 75,831,159
Nestle S.A.   8,228,697 1,057,661,616
PepsiCo, Inc.   4,321,777 690,533,529
        $2,053,070,273
Gaming & Lodging – 0.6%  
Marriott International, Inc., “A” (a)   2,666,509 $393,470,068
Health Maintenance Organizations – 1.7%  
Cigna Corp.   5,725,900 $1,098,800,210
Insurance – 9.9%  
Aon PLC   5,938,266 $1,756,360,935
Chubb Ltd.   7,556,110 1,356,095,062
Marsh & McLennan Cos., Inc.   8,693,257 1,425,868,013
Progressive Corp.   11,226,089 1,043,352,712
Travelers Cos., Inc.   5,198,093 763,859,766
        $6,345,536,488
Machinery & Tools – 4.9%  
Eaton Corp. PLC   6,725,410 $1,089,919,944
Illinois Tool Works, Inc.   4,694,200 1,089,758,530
PACCAR, Inc.   2,760,588 230,288,251
Trane Technologies PLC   4,124,986 769,928,637
        $3,179,895,362
Major Banks – 8.6%  
Goldman Sachs Group, Inc.   2,087,946 $795,486,547
JPMorgan Chase & Co.   17,774,539 2,823,130,029
Morgan Stanley   11,499,922 1,090,422,604
PNC Financial Services Group, Inc.   4,266,928 840,584,816
        $5,549,623,996
Medical & Health Technology & Services – 1.0%  
McKesson Corp.   2,897,922 $628,153,573
Medical Equipment – 8.6%  
Abbott Laboratories   8,514,872 $1,070,915,451
Boston Scientific Corp. (a)   14,370,458 547,083,336
Danaher Corp.   3,552,378 1,142,586,860
Medtronic PLC   12,559,225 1,340,069,308
Thermo Fisher Scientific, Inc.   2,239,406 1,417,163,299
        $5,517,818,254
Other Banks & Diversified Financials – 5.7%  
American Express Co.   6,176,466 $940,675,772
Citigroup, Inc.   17,976,275 1,145,088,717
Moody's Corp.   854,501 333,802,271
2

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Other Banks & Diversified Financials – continued  
Truist Financial Corp.   8,736,766 $518,177,591
U.S. Bancorp   13,616,984 753,563,895
        $3,691,308,246
Pharmaceuticals – 7.1%  
Johnson & Johnson   13,342,936 $2,080,564,010
Merck & Co., Inc.   12,379,882 927,376,961
Pfizer, Inc.   24,340,052 1,307,790,994
Roche Holding AG   564,650 221,204,044
        $4,536,936,009
Railroad & Shipping – 2.5%  
Canadian National Railway Co.   3,224,776 $408,159,898
Union Pacific Corp.   5,024,992 1,184,089,115
        $1,592,249,013
Real Estate – 0.4%  
Public Storage, Inc., REIT   833,539 $272,883,998
Specialty Chemicals – 1.0%  
DuPont de Nemours, Inc.   8,707,330 $643,994,127
Specialty Stores – 1.8%  
Lowe's Cos., Inc.   4,709,127 $1,151,805,373
Tobacco – 0.3%  
Philip Morris International, Inc.   2,500,762 $214,915,486
Utilities - Electric Power – 5.9%  
American Electric Power Co., Inc.   5,182,839 $420,069,101
Dominion Energy, Inc.   11,788,794 839,362,133
Duke Energy Corp.   13,054,233 1,266,391,143
Southern Co.   16,156,464 987,159,951
Xcel Energy, Inc.   4,544,843 289,642,844
        $3,802,625,172
Total Common Stocks   $63,452,320,840
Investment Companies (h) – 1.2%
Money Market Funds – 1.2%  
MFS Institutional Money Market Portfolio, 0.05% (v)     765,940,460 $765,940,460
 
Other Assets, Less Liabilities – 0.2%   102,773,012
Net Assets – 100.0% $64,321,034,312
(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 $765,940,460 and $63,452,320,840, 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.
3

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 values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.
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:        
United States $60,462,007,046 $— $— $60,462,007,046
United Kingdom 1,303,288,236 1,303,288,236
Switzerland 1,278,865,660 1,278,865,660
Canada 408,159,898 408,159,898
Mutual Funds 765,940,460 765,940,460
Total $62,914,973,064 $1,303,288,236 $— $64,218,261,300
For further information regarding security characteristics, see the Portfolio of Investments.
4

Supplemental Information (unaudited) – continued
(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 $658,689,844 $638,785,946 $531,535,330 $— $— $765,940,460
Affiliated Issuers Dividend
Income
Capital Gain
Distributions
MFS Institutional Money Market Portfolio $78,093 $—
(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.
5