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 Technology Fund
      S000000768
      RFHV6YCC4ZBRJX8V4134
      2022-08-31
      2021-11-30
      N
    
    
      2256467081.19
      6125407.48
      2250341673.71
      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
      57374.12000000
      N
      
        
          
          
          
          
          
          
          
          
          
        
        
          
            
            
            
            
              
              
              
            
          
        
        
        
        
      
      
      
      
      
      
    
    
      
        EPAM Systems Inc
        549300XCR4R530HJP604
        EPAM Systems Inc
        29414B104
        
          
        
        36454.00000000
        NS
        USD
        22184081.70000000
        0.985809486584
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        salesforce.com Inc
        RCGZFPDMRW58VJ54VR07
        salesforce.com Inc
        79466L302
        
          
        
        193337.00000000
        NS
        USD
        55093311.52000000
        2.448219848729
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Intuit Inc
        VI90HBPH7XSFMB9E4M29
        Intuit Inc
        461202103
        
          
        
        36724.00000000
        NS
        USD
        23955065.20000000
        1.064507913614
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Couchbase Inc
        5493004VX52ODFMQLF07
        Couchbase Inc
        22207T101
        
          
        
        49998.00000000
        NS
        USD
        1652433.90000000
        0.073430355901
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        DoubleVerify Holdings Inc
        N/A
        DoubleVerify Holdings Inc
        25862V105
        
          
        
        284329.00000000
        NS
        USD
        8780079.52000000
        0.390166507716
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Pinduoduo Inc
        5493000573DS7005T657
        Pinduoduo Inc
        722304102
        
          
        
        100527.00000000
        NS
        USD
        6685045.50000000
        0.297068022074
        Long
        EC
        CORP
        KY
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Tradeweb Markets Inc
        N/A
        Tradeweb Markets Inc
        892672106
        
          
        
        188219.00000000
        NS
        USD
        18069024.00000000
        0.802945802012
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Constellation Software Inc/Canada
        549300B6PYHMCTDWQV29
        Constellation Software Inc/Canada
        21037X100
        
          
        
        12611.00000000
        NS
        
        21458690.82000000
        0.953574786917
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        Uber Technologies Inc
        549300B2FTG34FILDR98
        Uber Technologies Inc
        90353T100
        
          
        
        320968.00000000
        NS
        USD
        12196784.00000000
        0.541996983946
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Micron Technology Inc
        B3DXGBC8GAIYWI2Z0172
        Micron Technology Inc
        595112103
        
          
        
        320551.00000000
        NS
        USD
        26926284.00000000
        1.196542032464
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        HubSpot Inc
        529900BLNVEW0MVKJB37
        HubSpot Inc
        443573100
        
          
        
        34378.00000000
        NS
        USD
        27739951.98000000
        1.232699563096
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Sea Ltd
        529900OM6JLLW44YKI15
        Sea Ltd
        81141R100
        
          
        
        42639.00000000
        NS
        USD
        12283016.73000000
        0.545828967818
        Long
        EC
        CORP
        KY
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Black Knight Inc
        549300TUSNXS3BFFML48
        Black Knight Inc
        09215C105
        
          
        
        178431.00000000
        NS
        USD
        12752463.57000000
        0.566690103951
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        FleetCor Technologies Inc
        549300DG6RR0NQSFLN74
        FleetCor Technologies Inc
        339041105
        
          
        
        64745.00000000
        NS
        USD
        13410631.85000000
        0.595937586130
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Advanced Micro Devices Inc
        R2I72C950HOYXII45366
        Advanced Micro Devices Inc
        007903107
        
          
        
        372579.00000000
        NS
        USD
        59005336.23000000
        2.622061214940
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        CME Group Inc
        LCZ7XYGSLJUHFXXNXD88
        CME Group Inc
        12572Q105
        
          
        
        26367.00000000
        NS
        USD
        5814450.84000000
        0.258380800921
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Remitly Global Inc
        N/A
        Remitly Global Inc
        75960P104
        
          
        
        116186.00000000
        NS
        USD
        2795435.16000000
        0.124222698830
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        PayPal Holdings Inc
        5493005X2GO78EFZ3E94
        PayPal Holdings Inc
        70450Y103
        
          
        
        245315.00000000
        NS
        USD
        45356290.35000000
        2.015529058537
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Alphabet Inc
        5493006MHB84DD0ZWV18
        Alphabet Inc
        02079K305
        
          
        
        65254.00000000
        NS
        USD
        185187589.30000000
        8.229309862741
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Visa Inc
        549300JZ4OKEHW3DPJ59
        Visa Inc
        92826C839
        
          
        
        191296.00000000
        NS
        USD
        37067425.92000000
        1.647191017837
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Farfetch Ltd
        549300QFQ74Z0F96NS78
        Farfetch Ltd
        000000000
        
          
        
        665093.00000000
        NS
        USD
        22885850.13000000
        1.016994458991
        Long
        EC
        CORP
        KY
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Avalara Inc
        549300Q16CMW239SS315
        Avalara Inc
        05338G106
        
          
        
        45720.00000000
        NS
        USD
        6386169.60000000
        0.283786665580
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        TaskUS Inc
        549300VFPOK2Y6GLWE32
        TaskUS Inc
        87652V109
        
          
        
        186516.00000000
        NS
        USD
        8309287.80000000
        0.369245608214
        Long
        EC
        CORP
        US
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Square Inc
        549300OHIIUWSTIZME52
        Square Inc
        852234103
        
          
        
        51389.00000000
        NS
        USD
        10705870.37000000
        0.475744216759
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Generac Holdings Inc
        529900S2H2AHJHSFFI84
        Generac Holdings Inc
        368736104
        
          
        
        19693.00000000
        NS
        USD
        8295479.32000000
        0.368631991173
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        CDW Corp/DE
        9845001B052ABF0B6755
        CDW Corp/DE
        12514G108
        
          
        
        62564.00000000
        NS
        USD
        11847119.04000000
        0.526458678626
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Microsoft Corp
        INR2EJN1ERAN0W5ZP974
        Microsoft Corp
        594918104
        
          
        
        819418.00000000
        NS
        USD
        270891396.62000000
        12.03778962922
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        NVIDIA Corp
        549300S4KLFTLO7GSQ80
        NVIDIA Corp
        67066G104
        
          
        
        274572.00000000
        NS
        USD
        89719146.72000000
        3.986912199518
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Adobe Inc
        FU4LY2G4933NH2E1CP29
        Adobe Inc
        00724F101
        
          
        
        148989.00000000
        NS
        USD
        99800281.65000000
        4.434894612490
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Take-Two Interactive Software Inc
        BOMSTHHJK882EWYX3334
        Take-Two Interactive Software Inc
        874054109
        
          
        
        83283.00000000
        NS
        USD
        13814984.04000000
        0.613906065971
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Xometry Inc
        N/A
        Xometry Inc
        98423F109
        
          
        
        102457.00000000
        NS
        USD
        5093137.47000000
        0.226327296405
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        TransUnion
        549300ZS772LUNUMRB03
        TransUnion
        89400J107
        
          
        
        162430.00000000
        NS
        USD
        18060591.70000000
        0.802571090025
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Paya Holdings Inc
        N/A
        Paya Holdings Inc
        70434P103
        
          
        
        1401167.00000000
        NS
        USD
        9023515.48000000
        0.400984240989
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        RingCentral Inc
        549300C8EH0H1614VE84
        RingCentral Inc
        76680R206
        
          
        
        94963.00000000
        NS
        USD
        20510108.74000000
        0.911421984475
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        ThredUp Inc
        N/A
        ThredUp Inc
        88556E102
        
          
        
        195763.00000000
        NS
        USD
        3664683.36000000
        0.162850086403
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Guardant Health Inc
        254900M8C3E5VC8BR186
        Guardant Health Inc
        40131M109
        
          
        
        68505.00000000
        NS
        USD
        7201245.60000000
        0.320006765378
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Eventbrite Inc
        549300N6XBV2B1FAUF55
        Eventbrite Inc
        29975E109
        
          
        
        553520.00000000
        NS
        USD
        8358152.00000000
        0.371417020697
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Marvell Technology Inc
        N/A
        Marvell Technology Inc
        573874104
        
          
        
        402072.00000000
        NS
        USD
        28615464.24000000
        1.271605311064
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Freshworks Inc
        254900ULRGCUEIK0K191
        Freshworks Inc
        358054104
        
          
        
        99712.00000000
        NS
        USD
        3511856.64000000
        0.156058819024
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Netflix Inc
        549300Y7VHGU0I7CE873
        Netflix Inc
        64110L106
        
          
        
        16458.00000000
        NS
        USD
        10564390.20000000
        0.469457163924
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Mastercard Inc
        AR5L2ODV9HN37376R084
        Mastercard Inc
        57636Q104
        
          
        
        258094.00000000
        NS
        USD
        81278962.48000000
        3.611849855048
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Descartes Systems Group Inc/The
        875500NEPA7JI5EOMN45
        Descartes Systems Group Inc/The
        249906108
        
          
        
        191730.00000000
        NS
        
        15415545.27000000
        0.685031319914
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        Thoughtworks Holding Inc
        N/A
        Thoughtworks Holding Inc
        88546E105
        
          
        
        657166.00000000
        NS
        USD
        19189247.20000000
        0.852725940428
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Topicus.com Inc
        N/A
        Topicus.com Inc
        89072T102
        
          
        
        105492.00000000
        NS
        
        9428174.60000000
        0.418966360093
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        Clarivate PLC
        549300WDHIIODXFO0R55
        Clarivate PLC
        000000000
        
          
        
        752710.00000000
        NS
        USD
        17568251.40000000
        0.780692621269
        Long
        EC
        CORP
        JE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Match Group Inc
        15OMOPB0A8K0EFUVD031
        Match Group Inc
        57667L107
        
          
        
        92348.00000000
        NS
        USD
        12004316.52000000
        0.533444172511
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Nuvei Corp
        N/A
        Nuvei Corp
        67079A102
        
          
        
        215788.00000000
        NS
        USD
        21268065.28000000
        0.945103827052
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS Institutional Money Market Portfolio
        5L2W638H85N8T1136O07
        MFS Institutional Money Market Portfolio
        55291X109
        
          
        
        18131708.53800000
        NS
        USD
        18131708.54000000
        0.805731358567
        Long
        STIV
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        ServiceNow Inc
        549300HJTQM36M0E1G39
        ServiceNow Inc
        81762P102
        
          
        
        62597.00000000
        NS
        USD
        40544076.90000000
        1.801685378432
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Charles Schwab Corp/The
        549300VSGCJ7E698NM85
        Charles Schwab Corp/The
        808513105
        
          
        
        187287.00000000
        NS
        USD
        14494140.93000000
        0.644086233629
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Qualtrics International Inc
        549300NW34K5PVZGTN68
        Qualtrics International Inc
        747601201
        
          
        
        135143.00000000
        NS
        USD
        4373227.48000000
        0.194336154864
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Meta Platforms Inc
        BQ4BKCS1HXDV9HN80Z93
        Meta Platforms Inc
        30303M102
        
          
        
        115431.00000000
        NS
        USD
        37452742.26000000
        1.664313588356
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Bio-Techne Corp
        54930073RLKQ51TILZ35
        Bio-Techne Corp
        09073M104
        
          
        
        27252.00000000
        NS
        USD
        12863761.56000000
        0.571635930235
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Endava PLC
        213800JJ6CRPCWCQVZ25
        Endava PLC
        29260V105
        
          
        
        206106.00000000
        NS
        USD
        32263833.24000000
        1.433730424891
        Long
        EC
        CORP
        GB
        N
        
        1
        
          N
          N
          N
        
      
      
        Autodesk Inc
        FRKKVKAIQEF3FCSTPG55
        Autodesk Inc
        052769106
        
          
        
        93735.00000000
        NS
        USD
        23826499.65000000
        1.058794756741
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        WEX Inc
        T9M5IGROL1TL1G5OV478
        WEX Inc
        96208T104
        
          
        
        123305.00000000
        NS
        USD
        15588218.10000000
        0.692704502703
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        ACV Auctions Inc
        N/A
        ACV Auctions Inc
        00091G104
        
          
        
        229143.00000000
        NS
        USD
        4853248.74000000
        0.215667193862
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Lam Research Corp
        549300I4GMO6D34U1T02
        Lam Research Corp
        512807108
        
          
        
        55513.00000000
        NS
        USD
        37740513.05000000
        1.677101459343
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        KLA Corp
        549300H0BF5JCG96TJ81
        KLA Corp
        482480100
        
          
        
        77788.00000000
        NS
        USD
        31747616.44000000
        1.410790939478
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Verisk Analytics Inc
        549300I1YSWNIRKBWP67
        Verisk Analytics Inc
        92345Y106
        
          
        
        51441.00000000
        NS
        USD
        11567537.67000000
        0.514034726599
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Pinterest Inc
        N/A
        Pinterest Inc
        72352L106
        
          
        
        101343.00000000
        NS
        USD
        4059800.58000000
        0.180408185451
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Apple Inc
        HWUPKR0MPOU8FGXBT394
        Apple Inc
        037833100
        
          
        
        267779.00000000
        NS
        USD
        44263868.70000000
        1.966984356958
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Asana Inc
        N/A
        Asana Inc
        04342Y104
        
          
        
        120760.00000000
        NS
        USD
        12553002.00000000
        0.557826491268
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Chewy Inc
        N/A
        Chewy Inc
        16679L109
        
          
        
        170960.00000000
        NS
        USD
        11669729.60000000
        0.518575900554
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        AppLovin Corp
        549300LLVXMUAOL3SQ07
        AppLovin Corp
        03831W108
        
          
        
        93782.00000000
        NS
        USD
        8544478.02000000
        0.379696919797
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MercadoLibre Inc
        549300DKPDN9M5S8GB14
        MercadoLibre Inc
        58733R102
        
          
        
        9996.00000000
        NS
        USD
        11879346.36000000
        0.527890786487
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Xilinx Inc
        6EY4K7ZMF9UX1CU6KC79
        Xilinx Inc
        983919101
        
          
        
        161969.00000000
        NS
        USD
        37001818.05000000
        1.644275555231
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Charter Communications Inc
        0J0XRGZE3PBRFEZ7MV65
        Charter Communications Inc
        16119P108
        
          
        
        6367.00000000
        NS
        USD
        4114864.76000000
        0.182855110762
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Tencent Holdings Ltd
        254900N4SLUMW4XUYY11
        Tencent Holdings Ltd
        000000000
        
          
        
        432700.00000000
        NS
        
        25491456.78000000
        1.132781616134
        Long
        EC
        CORP
        KY
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Rakus Co Ltd
        N/A
        Rakus Co Ltd
        000000000
        
          
        
        41000.00000000
        NS
        
        1097763.23000000
        0.048782069088
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Booking Holdings Inc
        FXM8FAOHMYDIPD38UZ17
        Booking Holdings Inc
        09857L108
        
          
        
        25935.00000000
        NS
        USD
        54511479.75000000
        2.422364585202
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Paycor HCM Inc
        N/A
        Paycor HCM Inc
        70435P102
        
          
        
        334300.00000000
        NS
        USD
        9841792.00000000
        0.437346564522
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Arthur J Gallagher & Co
        54930049QLLMPART6V29
        Arthur J Gallagher & Co
        363576109
        
          
        
        7241.00000000
        NS
        USD
        1179558.90000000
        0.052416880235
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Global Payments Inc
        549300NOMHGVQBX6S778
        Global Payments Inc
        37940X102
        
          
        
        394436.00000000
        NS
        USD
        46953661.44000000
        2.086512550007
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Wix.com Ltd
        5493008P6N29Q1AG9464
        Wix.com Ltd
        000000000
        
          
        
        57075.00000000
        NS
        USD
        8721060.00000000
        0.387543816207
        Long
        EC
        CORP
        IL
        N
        
        1
        
          N
          N
          N
        
      
      
        Amazon.com Inc
        ZXTILKJKG63JELOEG630
        Amazon.com Inc
        023135106
        
          
        
        61880.00000000
        NS
        USD
        217017491.60000000
        9.643757396280
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Q2 Holdings Inc
        549300M9RKR9DZXWS696
        Q2 Holdings Inc
        74736L109
        
          
        
        121059.00000000
        NS
        USD
        9721037.70000000
        0.431980521605
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Maravai LifeSciences Holdings Inc
        N/A
        Maravai LifeSciences Holdings Inc
        56600D107
        
          
        
        216905.00000000
        NS
        USD
        9964615.70000000
        0.442804566809
        Long
        EC
        CORP
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Atlassian Corp PLC
        549300AGBII4MWBVJY22
        Atlassian Corp PLC
        000000000
        
          
        
        45067.00000000
        NS
        USD
        16959613.44000000
        0.753646152410
        Long
        EC
        CORP
        GB
        
        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®  Technology Fund
SCT-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 – 99.3%
Broadcasting – 0.5%  
Netflix, Inc. (a)   16,458 $10,564,390
Brokerage & Asset Managers – 1.7%  
Charles Schwab Corp.   187,287 $14,494,141
CME Group, Inc.   26,367 5,814,451
Tradeweb Markets, Inc.   188,219 18,069,024
        $38,377,616
Business Services – 9.9%  
Clarivate PLC (a)   752,710 $17,568,251
Endava PLC, ADR (a)   206,106 32,263,833
FleetCor Technologies, Inc. (a)   64,745 13,410,632
Global Payments, Inc.   394,436 46,953,666
Paya, Inc. (a)   1,401,167 9,023,516
PayPal Holdings, Inc. (a)   245,315 45,356,290
Remitly Global, Inc. (a)   116,186 2,795,435
TaskUs, Inc., “A” (a)   186,516 8,309,288
Thoughtworks Holding, Inc. (a)   657,166 19,189,247
Verisk Analytics, Inc., “A”   51,441 11,567,538
WEX, Inc. (a)   123,305 15,588,218
        $222,025,914
Cable TV – 0.2%  
Charter Communications, Inc., “A” (a)   6,367 $4,114,865
Computer Software – 26.6%  
Adobe Systems, Inc. (a)   148,989 $99,800,282
AppLovin Corp. (a)   93,782 8,544,478
Asana, Inc. (a)   120,760 12,553,002
Atlassian Corp. PLC, “A” (a)   45,067 16,959,613
Autodesk, Inc. (a)   93,735 23,826,500
Avalara, Inc. (a)   45,720 6,386,170
Black Knight, Inc. (a)   178,431 12,752,463
Couchbase, Inc. (a)   49,998 1,652,434
DoubleVerify Holdings, Inc. (a)   284,329 8,780,079
Eventbrite, Inc. (a)   553,520 8,358,152
Freshworks, Inc, “A” (a)   99,712 3,511,857
Intuit, Inc.   36,724 23,955,065
Microsoft Corp. (s)   819,418 270,891,397
Paycor HCM, Inc. (a)   334,300 9,841,792
Qualtrics International, “A” (a)   135,143 4,373,227
RAKUS Co. Ltd.   41,000 1,097,763
RingCentral, Inc. (a)   94,963 20,510,109
salesforce.com, inc. (a)   193,337 55,093,311
Topicus.com, Inc. (a)   105,492 9,428,175
        $598,315,869
Computer Software - Systems – 11.2%  
Apple, Inc. (s)   267,779 $44,263,868
CDW Corp.   62,564 11,847,119
Constellation Software, Inc.   12,611 21,458,691
Descartes Systems Group, Inc. (a)   191,730 15,415,545
EPAM Systems, Inc. (a)   36,454 22,184,082
HubSpot, Inc. (a)   34,378 27,739,952
Nuvei Corp. (a)   215,788 21,268,065
Q2 Holdings, Inc. (a)   121,059 9,721,038
1

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Computer Software - Systems – continued  
ServiceNow, Inc. (a)   62,597 $40,544,077
Square, Inc., “A” (a)   51,389 10,705,870
TransUnion   162,430 18,060,592
Wix.com Ltd. (a)   57,075 8,721,060
        $251,929,959
Consumer Services – 3.0%  
Booking Holdings, Inc. (a)   25,935 $54,511,480
Uber Technologies, Inc. (a)   320,968 12,196,784
        $66,708,264
Electronics – 13.8%  
Advanced Micro Devices (a)   372,579 $59,005,336
KLA Corp.   77,788 31,747,617
Lam Research Corp.   55,513 37,740,513
Marvell Technology, Inc.   402,072 28,615,464
Micron Technology, Inc.   320,551 26,926,284
NVIDIA Corp.   274,572 89,719,147
Xilinx, Inc.   161,969 37,001,818
        $310,756,179
Insurance – 0.0%  
Arthur J. Gallagher & Co.   7,241 $1,179,559
Internet – 12.3%  
Alphabet, Inc., “A” (a)   65,254 $185,187,589
Match Group, Inc. (a)   92,348 12,004,317
Mercadolibre, Inc. (a)   9,996 11,879,346
Meta Platforms, Inc., “A” (a)   115,431 37,452,742
Pinterest, Inc. (a)   101,343 4,059,801
Tencent Holdings Ltd.   432,700 25,491,457
        $276,075,252
Leisure & Toys – 0.6%  
Take-Two Interactive Software, Inc. (a)   83,283 $13,814,984
Machinery & Tools – 0.2%  
Xometry, Inc., “A” (a)   102,457 $5,093,137
Medical & Health Technology & Services – 0.3%  
Guardant Health, Inc. (a)   68,505 $7,201,246
Medical Equipment – 1.0%  
Bio-Techne Corp.   27,252 $12,863,761
Maravai Lifesciences Holdings, Inc., “A” (a)   216,905 9,964,616
        $22,828,377
Other Banks & Diversified Financials – 5.2%  
Mastercard, Inc., “A”   258,094 $81,278,962
Visa, Inc., “A”   191,296 37,067,426
        $118,346,388
Specialty Stores – 12.4%  
ACV Auctions, Inc. (a)   229,143 $4,853,249
Amazon.com, Inc. (a)(s)   61,880 217,017,492
Chewy, Inc., “A” (a)   170,960 11,669,730
Farfetch Ltd., “A” (a)   665,093 22,885,850
Pinduoduo, Inc., ADR (a)   100,527 6,685,045
2

Portfolio of Investments (unaudited) – continued
Issuer     Shares/Par Value ($)
Common Stocks – continued
Specialty Stores – continued  
Sea Ltd., ADR (a)   42,639 $12,283,017
ThredUp, Inc. (a)   195,763 3,664,683
        $279,059,066
Utilities - Electric Power – 0.4%  
Generac Holdings, Inc. (a)   19,693 $8,295,479
Total Common Stocks   $2,234,686,544
Investment Companies (h) – 0.8%
Money Market Funds – 0.8%  
MFS Institutional Money Market Portfolio, 0.05% (v)     18,133,050 $18,133,050
 
Other Assets, Less Liabilities – (0.1)%   (2,470,017)
Net Assets – 100.0% $2,250,349,577
(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 $18,133,050 and $2,234,686,544, respectively.      
(s) Security or a portion of the security was pledged to cover collateral requirements for securities sold short and/or certain derivative transactions.      
(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:
ADR American Depositary Receipt
At November 30, 2021, the fund had cash collateral of $57,233 and other liquid securities with an aggregate value of $519,870 to cover any collateral or margin obligations for securities sold short.
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 and equity securities sold short, 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. Equity securities sold short, for which there were no sales reported that day, are generally valued at the last quoted daily ask 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 $2,031,810,504 $— $— $2,031,810,504
United Kingdom 72,717,934 72,717,934
Canada 67,570,476 67,570,476
China 32,176,502 32,176,502
Singapore 12,283,017 12,283,017
Israel 8,721,060 8,721,060
Philippines 8,309,288 8,309,288
Japan 1,097,763 1,097,763
Mutual Funds 18,133,050 18,133,050
Total $2,251,721,831 $1,097,763 $— $2,252,819,594
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 $16,102,802 $109,681,998 $107,651,750 $— $— $18,133,050
Affiliated Issuers Dividend
Income
Capital Gain
Distributions
MFS Institutional Money Market Portfolio $3,772 $—
(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


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