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      NORTHWESTERN MUTUAL SERIES FUND INC
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      0000742212
      549300T1UBX7MDSNZA55
      720 E WISCONSIN AVE
      MILWAUKEE
      
      53202
      414-271-1444
      Research International Core Portfolio
      S000018230
      549300ZQ5NCCGE71IX14
      2022-12-31
      2022-03-31
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        Hong Kong Exchanges & Clearing Ltd
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        ZOZO Inc
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        NetEase Inc
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        Weir Group PLC/The
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        LEG Immobilien SE
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        SMC Corp
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        Flutter Entertainment PLC
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        ASML Holding NV
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        Macquarie Group Ltd
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        Mitsubishi UFJ Financial Group Inc
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        Continental AG
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        Amadeus IT Group SA
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        Constellation Software Inc/Canada
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        CLP Holdings Ltd
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        BNP Paribas SA
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        Ritchie Bros Auctioneers Inc
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        Novo Nordisk A/S
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        Samsung Electronics Co Ltd
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        000000000
        
          
        
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        Iberdrola SA
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        Fujitsu Ltd
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        Akzo Nobel NV
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        GEA Group AG
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        000000000
        
          
        
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        Hitachi Ltd
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        Grand City Properties SA
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        000000000
        
          
        
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        Reckitt Benckiser Group PLC
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        000000000
        
          
        
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        Cie Financiere Richemont SA
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            Call
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                Cie Financiere Richemont SA
                Cie Financiere Richemont SA
                
                  
                
              
            
            67.00000000
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            2023-11-22
            XXXX
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          N
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        Santen Pharmaceutical Co Ltd
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        000000000
        
          
        
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        Kubota Corp
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        000000000
        
          
        
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        Visa Inc
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        92826C839
        
          
        
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        Roche Holding AG
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        Daikin Industries Ltd
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        000000000
        
          
        
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        State Street Global Advisors
        549300BZ5TGIFZUZDZ37
        
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        NXP Semiconductors NV
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        Koninklijke Philips NV
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        Kao Corp
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        APA Group
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        HDFC Bank Ltd
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        Advanced Info Service PCL
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        Cie Financiere Richemont SA
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        ESR Cayman Ltd
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        adidas AG
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        MTU Aero Engines AG
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        Ocado Group PLC
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        Symrise AG
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        Beazley PLC
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        Techtronic Industries Co Ltd
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        Cellnex Telecom SA
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        Nestle SA
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        Wolters Kluwer NV
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        Persol Holdings Co Ltd
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        000000000
        
          
        
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        Secom Co Ltd
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        000000000
        
          
        
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        1579555.49000000
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        London Stock Exchange Group PLC
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        000000000
        
          
        
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        Nitto Denko Corp
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        000000000
        
          
        
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        7431900.87000000
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        Nomura Research Institute Ltd
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        000000000
        
          
        
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        8539339.71000000
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        N
        
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        Cadence Design Systems Inc
        GCT7RXJOGLXPV0NXZY22
        
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        China Resources Gas Group Ltd
        529900A0E1J5JSOKEK83
        
        000000000
        
          
        
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        3434308.04000000
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        Sika AG
        549300R3N69ECGYPU434
        
        000000000
        
          
        
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        10097520.00000000
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        SEEK Ltd
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        000000000
        
          
        
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        carsales.com Ltd
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        Hellenic Telecommunications Organization SA
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        000000000
        
          
        
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        3796214.03000000
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        Kansai Paint Co Ltd
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        000000000
        
          
        
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        Galp Energia SGPS SA
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        Yum China Holdings Inc
        529900DO9BYZ7VA3K502
        
        98850P109
        
          
        
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        JD.com Inc
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        EC
        CORP
        KY
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Legrand SA
        969500XXRPGD7HCAFA90
        
        000000000
        
          
        
        102137.00000000
        NS
        
        9709855.36000000
        1.092811385168
        Long
        EC
        CORP
        FR
        N
        
        2
        
          N
          N
          N
        
      
      
        Capricorn Energy PLC
        213800ZJEUQ8ZOC9AL24
        
        000000000
        
          
        
        1307174.00000000
        NS
        
        3771793.49000000
        0.424502602310
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        Julius Baer Group Ltd
        5299007MF0604ZGJER92
        
        000000000
        
          
        
        120241.00000000
        NS
        
        6974786.98000000
        0.784988688118
        Long
        EC
        CORP
        CH
        N
        
        2
        
          N
          N
          N
        
      
      
        Prosus NV
        635400Z5LQ5F9OLVT688
        
        000000000
        
          
        
        47054.00000000
        NS
        
        2490914.01000000
        0.280343948357
        Long
        EC
        CORP
        NL
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Zurich Insurance Group AG
        529900QVNRBND50TXP03
        
        000000000
        
          
        
        20609.00000000
        NS
        
        10160826.56000000
        1.143566668689
        Long
        EC
        CORP
        CH
        N
        
        2
        
          N
          N
          N
        
      
      
        Danone SA
        969500KMUQ2B6CBAF162
        
        000000000
        
          
        
        93449.00000000
        NS
        
        5147906.83000000
        0.579379505155
        Long
        EC
        CORP
        FR
        N
        
        2
        
          N
          N
          N
        
      
      
        Burberry Group PLC
        213800PE1KEFCNFR1R50
        
        000000000
        
          
        
        109847.00000000
        NS
        
        2398743.48000000
        0.269970466897
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        E.ON SE
        Q9MAIUP40P25UFBFG033
        
        000000000
        
          
        
        398648.00000000
        NS
        
        4636151.59000000
        0.521783183484
        Long
        EC
        CORP
        DE
        N
        
        2
        
          N
          N
          N
        
      
      
        UBS Group AG
        549300SZJ9VS8SGXAN81
        
        000000000
        
          
        
        667066.00000000
        NS
        
        13032470.72000000
        1.466760507922
        Long
        EC
        CORP
        CH
        N
        
        2
        
          N
          N
          N
        
      
      
        Eni SpA
        BUCRF72VH5RBN7X3VL35
        
        000000000
        
          
        
        616171.00000000
        NS
        
        9033735.34000000
        1.016716363337
        Long
        EC
        CORP
        IT
        N
        
        2
        
          N
          N
          N
        
      
      
        Sugi Holdings Co Ltd
        529900N86BFWB1FADG87
        
        000000000
        
          
        
        45300.00000000
        NS
        
        2241738.69000000
        0.252300108722
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Orsted AS
        W9NG6WMZIYEU8VEDOG48
        
        000000000
        
          
        
        30294.00000000
        NS
        
        3814672.17000000
        0.429328452742
        Long
        EC
        CORP
        DK
        N
        
        2
        
          N
          N
          N
        
      
      
        Aon PLC
        635400FALWQYX5E6QC64
        
        000000000
        
          
        
        55421.00000000
        NS
        USD
        18046740.23000000
        2.031099584631
        Long
        EC
        CORP
        IE
        
        N
        
        1
        
          N
          N
          N
        
      
      
        Bridgestone Corp
        549300DHPOF90OYYD780
        
        000000000
        
          
        
        119800.00000000
        NS
        
        4636433.53000000
        0.521814914878
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        SoftBank Group Corp
        5493003BZYYYCDIO0R13
        
        000000000
        
          
        
        115000.00000000
        NS
        
        5172369.13000000
        0.582132654297
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Euronext NV
        724500QJ4QSZ3H9QU415
        
        000000000
        
          
        
        119420.00000000
        NS
        
        10843824.14000000
        1.220435736640
        Long
        EC
        CORP
        NL
        N
        
        2
        
          N
          N
          N
        
      
      
        Bayer AG
        549300J4U55H3WP1XT59
        
        000000000
        
          
        
        95171.00000000
        NS
        
        6511333.65000000
        0.732828583076
        Long
        EC
        CORP
        DE
        N
        
        2
        
          N
          N
          N
        
      
      
        Hiscox Ltd
        5493007JXOLJ0QCY2D70
        
        000000000
        
          
        
        321442.00000000
        NS
        
        4144083.35000000
        0.466402567089
        Long
        EC
        CORP
        BM
        
        N
        
        2
        
          N
          N
          N
        
      
      
        NatWest Group PLC
        2138005O9XJIJN4JPN90
        
        000000000
        
          
        
        3911171.00000000
        NS
        
        11005317.26000000
        1.238611241179
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        Woodside Petroleum Ltd
        2549005ZC5RXAOO7FH41
        
        000000000
        
          
        
        241170.00000000
        NS
        
        5754149.39000000
        0.647610055166
        Long
        EC
        CORP
        AU
        N
        
        2
        
          N
          N
          N
        
      
      
        Barclays PLC
        213800LBQA1Y9L22JB70
        
        000000000
        
          
        
        3544584.00000000
        NS
        
        6885741.75000000
        0.774966948604
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        TC Energy Corp
        549300UGKOFV2IWJJG27
        
        87807B107
        
          
        
        105132.00000000
        NS
        
        5929574.31000000
        0.667353536682
        Long
        EC
        CORP
        CA
        N
        
        1
        
          N
          N
          N
        
      
      
        Toyota Industries Corp
        35380000WKGEAHEMW830
        
        000000000
        
          
        
        103400.00000000
        NS
        
        7117020.58000000
        0.800996598810
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Schindler Holding AG
        5299007DRLI319H7Q933
        
        000000000
        
          
        
        31108.00000000
        NS
        
        6632317.81000000
        0.746444941155
        Long
        EC
        CORP
        CH
        N
        
        2
        
          N
          N
          N
        
      
      
        Diageo PLC
        213800ZVIELEA55JMJ32
        
        000000000
        
          
        
        263477.00000000
        NS
        
        13316968.46000000
        1.498779766480
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        Yamaha Corp
        529900S5TENP3IJS7S02
        
        000000000
        
          
        
        78600.00000000
        NS
        
        3427591.72000000
        0.385763857076
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Terumo Corp
        353800JX1R4582QVK932
        
        000000000
        
          
        
        160400.00000000
        NS
        
        4857834.25000000
        0.546732817208
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Glencore PLC
        2138002658CPO9NBH955
        
        000000000
        
          
        
        1765373.00000000
        NS
        
        11472751.52000000
        1.291219386430
        Long
        EC
        CORP
        JE
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Idemitsu Kosan Co Ltd
        549300P0R46FF6DUA630
        
        000000000
        
          
        
        191900.00000000
        NS
        
        5294287.15000000
        0.595854115160
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Koito Manufacturing Co Ltd
        N/A
        
        000000000
        
          
        
        148500.00000000
        NS
        
        6011906.04000000
        0.676619694474
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Taiwan Semiconductor Manufacturing Co Ltd
        549300KB6NK5SBD14S87
        
        000000000
        
          
        
        452189.00000000
        NS
        
        9348751.69000000
        1.052170388246
        Long
        EC
        CORP
        TW
        N
        
        2
        
          N
          N
          N
        
      
      
        KDDI Corp
        5299003FU7V4I45FU310
        
        000000000
        
          
        
        284200.00000000
        NS
        
        9334917.49000000
        1.050613395819
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        ConvaTec Group PLC
        213800LS272L4FIDOH92
        
        000000000
        
          
        
        1616795.00000000
        NS
        
        4553786.32000000
        0.512513250879
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        Kyocera Corp
        N/A
        
        000000000
        
          
        
        91700.00000000
        NS
        
        5154338.67000000
        0.580103386997
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        AIA Group Ltd
        ZP5ILWVSYE4LJGMMVD57
        
        000000000
        
          
        
        1190200.00000000
        NS
        
        12460719.38000000
        1.402411828084
        Long
        EC
        CORP
        HK
        N
        
        2
        
          N
          N
          N
        
      
      
        Tencent Holdings Ltd
        254900N4SLUMW4XUYY11
        
        000000000
        
          
        
        150000.00000000
        NS
        
        7076308.15000000
        0.796414552490
        Long
        EC
        CORP
        KY
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Ryanair Holdings PLC
        635400BR2ROC1FVEBQ56
        
        783513203
        
          
        
        40458.00000000
        NS
        USD
        3524700.96000000
        0.396693173646
        Long
        EC
        CORP
        IE
        N
        
        1
        
          N
          N
          N
        
      
      
        Kyowa Kirin Co Ltd
        529900TBXKVTQGYA3582
        
        000000000
        
          
        
        352500.00000000
        NS
        
        8178121.66000000
        0.920419937062
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Croda International PLC
        2138004WCNBFJEEOXV26
        
        000000000
        
          
        
        97739.00000000
        NS
        
        10044836.00000000
        1.130512323404
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
      
        NAVER Corp
        988400ULUQYDB2HQYJ61
        
        000000000
        
          
        
        23303.00000000
        NS
        
        6516060.51000000
        0.733360575185
        Long
        EC
        CORP
        KR
        N
        
        2
        
          N
          N
          N
        
      
      
        QIAGEN NV
        54930036WK3GMCN17Z57
        
        000000000
        
          
        
        211721.00000000
        NS
        
        10392491.06000000
        1.169639724749
        Long
        EC
        CORP
        NL
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Schneider Electric SE
        969500A1YF1XUYYXS284
        
        000000000
        
          
        
        142202.00000000
        NS
        
        23741540.35000000
        2.672030080159
        Long
        EC
        CORP
        FR
        
        N
        
        2
        
          N
          N
          N
        
      
      
        Linde PLC
        8945002PAZHZLBGKGF02
        
        000000000
        
          
        
        71419.00000000
        NS
        
        23014126.73000000
        2.590162137106
        Long
        EC
        CORP
        IE
        
        N
        
        2
        
          N
          N
          N
        
      
      
        State Street Global Advisors
        549300BZ5TGIFZUZDZ37
        
        857492706
        
          
        
        197912.90000000
        NS
        USD
        197912.90000000
        0.022274427617
        Long
        STIV
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        Kirin Holdings Co Ltd
        353800GBVL72LLMTYM96
        
        000000000
        
          
        
        304400.00000000
        NS
        
        4552520.64000000
        0.512370802875
        Long
        EC
        CORP
        JP
        N
        
        2
        
          N
          N
          N
        
      
      
        Whitbread PLC
        21380099VMZKRMN3EX36
        
        000000000
        
          
        
        88559.00000000
        NS
        
        3295546.57000000
        0.370902621977
        Long
        EC
        CORP
        GB
        N
        
        2
        
          N
          N
          N
        
      
    
    
      
    
    
      2022-04-26
      NORTHWESTERN MUTUAL SERIES FUND INC
      Phillip Rinzel
      Phillip Rinzel
      Controller and Chief Accounting Officer
    
  
  XXXX

Research International Core Portfolio

SCHEDULE OF INVESTMENTS

March 31, 2022 (unaudited)

Research International Core Portfolio

Research International Core Portfolio

The Fair Value Measurements and Disclosures Topic of the FASB Accounting Standards Codification defines fair value as the price that a Fund would receive to sell an asset or pay to transfer a liability in an orderly transaction between market participants at the measurement date. It establishes and requires disclosure of a fair value hierarchy, separately for each major category of asset and liability, which segregates fair value measurements into levels. A summary of the fair value hierarchy is described below:

Level 1 - fair value is determined by unadjusted quoted prices in active markets for identical securities or derivatives

Level 2 - fair value is determined by other significant observable inputs

Level 3 - fair value is determined by significant unobservable inputs

The categorization of a value determined for a financial instrument within the hierarchy is based upon the pricing transparency of the instrument and does not necessarily correspond to the Portfolio’s perceived risk of that instrument.

The following is a summary of the inputs used in valuing the Portfolio’s Investments at March 31, 2022.

Abbreviations

Abbreviations that may be used in the preceding statements

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