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Earnings Per Share of Common Stock
 12 Months Ended
Dec. 31, 2017
Earnings Per Share of Common Stock

11. Earnings Per Share of Common Stock

The following table presents a reconciliation of the earnings and share data used in the basic and diluted (losses) earnings per share computations for 2017, 2016 and 2015:

 

    Year Ended December 31,  
    2017     2016     2015  
    ($ in millions, except share amounts)  

Net earnings available to Alleghany stockholders

    $ 90.1        $ 456.9         $ 560.3    

Adjustment related to redeemable noncontrolling interests

     -             -             (2.6)   
 

 

 

    

 

 

    

 

 

  

Income available to common stockholders for basic earnings per share

    $ 90.1        $ 456.9         $ 557.7    

Effect of dilutive securities

     -             -             0.1    
 

 

 

    

 

 

    

 

 

  

Income available to common stockholders for diluted earnings per share

    $ 90.1        $ 456.9         $ 557.8    
 

 

 

    

 

 

    

 

 

  

Weighted average common shares outstanding applicable to basic earnings per share

     15,410,034         15,436,286         15,871,055    

Effect of dilutive securities

     -             6,363         8,046    
 

 

 

    

 

 

    

 

 

  

Adjusted weighted average common shares outstanding applicable to diluted earnings per share

     15,410,034         15,442,649         15,879,101    
 

 

 

    

 

 

    

 

 

  

78,345, 68,429 and 77,441 contingently issuable shares were potentially available during 2017, 2016 and 2015, respectively, but were not included in the diluted earnings per share computations because the impact was anti-dilutive to the earnings per share calculation.