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Earnings per common share
12 Months Ended
Mar. 31, 2020
Earnings per common share
18. Earnings per common share
The following table sets forth the computation of basic and diluted earnings per common share for the fiscal years ended March 31, 2018, 2019 and 2020:
             
 
2018
 
 
2019
 
 
2020
 
 
(in millions of yen)
 
Net income:
  
   
   
 
Net income attributable to MHFG common shareholders
  
577,608
   
84,471
   
150,195
 
             
Effect of dilutive securities
  
—  
   
—  
   
—  
 
             
Net income attributable to common shareholders after assumed conversions
  
577,608
   
84,471
   
150,195
 
             
          
 
2018
 
 
2019
 
 
2020
 
 
(thousands of shares)
 
Shares:
  
   
   
 
Weighted average common shares outstanding
  
25,366,345
   
25,362,376
   
25,373,681
 
             
Effect of dilutive securities:
  
   
   
 
Stock options and the common shares of MHFG under the stock compensation programs
(Note)
  
7,586
   
4,522
   
1,583
 
             
Weighted average common shares after assumed conversions
  
25,373,931
   
25,366,898
   
25,375,264
 
             
          
 
2018
 
 
2019
 
 
2020
 
 
(in yen)
 
Earnings per common share:
  
   
   
 
Basic net income per common share
  
22.77
   
3.33
   
5.92
 
             
Diluted net income per common share
(Note)
  
22.76
   
3.33
   
5.92
 
             
 
 
 
 
 
Note:For the fiscal year ended March 31, 2020, the performance-based plan under the stock compensation programs could potentially dilute earnings per common share but were not included in the computation of diluted earnings per common share due to their antidilutive effects.