8. Earnings Per Share of Common Stock

The following is a reconciliation of the earnings and share data used in the basic and diluted earnings per share computations for the three and six months ended June 30, 2017 and 2016:


	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
	($ in millions, except share amounts)
Net earnings available to Alleghany stockholders	$	101.8	$	77.1	$	251.0	$	231.6
Effect of dilutive securities		-		-		-		-

Income available to common stockholders for diluted earnings per share	$	101.8	$	77.1	$	251.0	$	231.6


Weighted average common shares outstanding applicable to basic earnings per share		15,419,034		15,438,859		15,416,366		15,445,525
Effect of dilutive securities		-		-		5,703		-

Adjusted weighted average common shares outstanding applicable to diluted earnings per share		15,419,034		15,438,859		15,422,069		15,445,525

75,035 and 70,738 contingently issuable shares were potentially available during the first six months of 2017 and 2016, respectively, but were not included in the diluted earnings per share computations because the impact was anti-dilutive to the earnings per share calculation.