NPORT-P
    false
    
      
      
        
          0000783740
          XXXXXXXX
        
      
      
      
      
        S000002515
        C000006931
        C000195683
        C000006930
        C000006933
        C000006936
        C000006935
        C000006929
        C000006924
        C000006925
      
      
      
    
  
  
    
      MFS SERIES TRUST X
      811-04492
      0000783740
      5493001MUVNRNUPJY164
      111 HUNTINGTON AVENUE
      BOSTON
      
      02199
      617-954-5000
      MFS International Diversification Fund
      S000002515
      5FYSVBMHKU2K1O39U714
      2022-05-31
      2021-11-30
      N
    
    
      38922634710.23
      36800138.11
      38885834572.12
      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
      0.00000000
      N
      
        
          
          
          
          
          
          
          
          
          
        
        
        
        
      
      
      
      
      
      
    
    
      
        MFS Research International Fund
        UH91KW1VFNZQF5FY7237
        MFS Research International Fund
        55273H361
        
          
        
        449441577.88900000
        NS
        USD
        10647270980.19000000
        27.38084728628
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS Emerging Markets Equity Fund
        GLINMRWNKCBOHYKQ2131
        MFS Emerging Markets Equity Fund
        552746331
        
          
        
        179797572.61000000
        NS
        USD
        6710045409.81000000
        17.25575774223
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS International New Discovery Fund
        RC53GXLQZ5LVIZBRHR66
        MFS International New Discovery Fund
        552981383
        
          
        
        100262946.20800000
        NS
        USD
        3875162870.94000000
        9.965487210395
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS International Intrinsic Value Fund
        7540QFSKYNTDFH7HAK24
        MFS International Value Fund
        552746349
        
          
        
        108138969.01300000
        NS
        USD
        5954131633.86000000
        15.31182678570
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS Institutional Money Market Portfolio
        5L2W638H85N8T1136O07
        MFS Institutional Money Market Portfolio
        55291X109
        
          
        
        64849372.32800000
        NS
        USD
        64849372.33000000
        0.166768626785
        Long
        STIV
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS International Large Cap Value Fund
        549300YEW2NKJCMQAR75
        MFS International Large Cap Value Fund
        552743445
        
          
        
        443188571.47600000
        NS
        USD
        5801338400.62000000
        14.91889903985
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
      
        MFS International Growth Fund
        PTNAY8DC4VJYOKVJ5B83
        MFS International Growth Fund
        552746356
        
          
        
        129632967.52400000
        NS
        USD
        5821816571.50000000
        14.97156132962
        Long
        EC
        RF
        US
        N
        
        1
        
          N
          N
          N
        
      
    
    
      
    
    
      2021-12-16
      MFS SERIES TRUST X
      Kasey Phillips
      Kasey Phillips
      Assistant Treasurer