Earnings Per Share of Common Stock (Tables)

6 Months Ended

Jun. 30, 2018

Reconciliation of Earnings and Share Data used in Basic and Diluted Earnings per Share Computations

The following table presents 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, 2018 and 2017:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
	($ in millions, except share amounts)
Net earnings available to Alleghany stockholders	$	295.1	$	101.8	$	466.7	$	251.0
Effect of dilutive securities		-		-		-		-
Income available to common stockholders for diluted earnings per share	$	295.1	$	101.8	$	466.7	$	251.0
Weighted average common shares outstanding applicable to basic earnings per share		15,180,075		15,419,034		15,284,679		15,416,366
Effect of dilutive securities		-		-		4,915		5,703
Adjusted weighted average common shares outstanding applicable to diluted earnings per share		15,180,075		15,419,034		15,289,594		15,422,069