Earnings Per Share of Common Stock

9 Months Ended

Sep. 30, 2021

8. Earnings Per Share of Common Stock

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 nine months ended September 30, 2021 and 2020:


	Three Months Ended September 30,					Nine Months Ended September 30,
	2021			2020		2021		2020
	($ in millions, except share amounts)
Net (losses) earnings available to Alleghany stockholders	$	(115.0	)	$	126.5	$	518.7	$	(57.3	)
Effect of dilutive securities		(4.1	)		—		0.2		(6.2	)
Income available to common stockholders for diluted earnings per share	$	(119.1	)	$	126.5	$	518.9	$	(63.5	)

Weighted average common shares outstanding applicable to basic earnings per share		13,837,707			14,275,487		13,915,535		14,309,010
Effect of dilutive securities		16,931			—		23,480		23,310
Adjusted weighted average common shares outstanding applicable to diluted earnings per share		13,854,638			14,275,487		13,939,015		14,332,320

Contingently issuable shares(1)							35,510		32,652

(1)

Contingently issuable shares were potentially available in the periods presented, but were not included in the diluted earnings per share computations because the impact was anti-dilutive to the earnings per share calculation.