Earnings Per Share of Common Stock

6 Months Ended

Jun. 30, 2022

Earnings Per Share [Abstract]

Earnings Per Share of Common Stock

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 six months ended June 30, 2022 and 2021:

	Three Months Ended June 30,					Six Months Ended June 30,
	2022			2021		2022			2021
	($ in millions, except share amounts)
Net (losses) earnings available to Alleghany stockholders	$	(171.6	)	$	403.7	$	(45.9	)	$	633.7
Effect of dilutive securities		—			—		—			—
Income available to common stockholders for diluted earnings per share	$	(171.6	)	$	403.7	$	(45.9	)	$	633.7
Weighted average common shares outstanding applicable to basic earnings per share		13,455,198			13,919,489		13,488,993			13,954,449
Effect of dilutive securities		—			—		—			—
Adjusted weighted average common shares outstanding applicable to diluted earnings per share		13,455,198			13,919,489		13,488,993			13,954,449
Contingently issuable shares(1)							54,612			59,972

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.