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   FX Curvature Sb
    
    
    
    
        
            | Description | 
            The net curvature risk requirement in a bucket | 
        
        
        
            
              | Variations | 
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              | Hierarchy(ies) required in the view | 
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            | Reference | 
            [MAR21.5] | 
        
        
    
          
          
          
        
        
            | Notation | 
            $S_b$ | 
        
        
        
        
            | Formula | 
            $$S_b = \sum_k CVR_k^{+}\text{when scenario is upward, } \\ S_b = \sum_k CVR_k^{-}\text{when scenario is downward} $$ | 
        
        
    
 
See also