Earnings Per Share

6 Months Ended

Jun. 30, 2011

Earnings Per Share

Earnings Per Share

L. Earnings Per Share – Basic earnings per share (EPS) amounts are computed by dividing earnings, after the deduction of preferred stock dividends declared and dividends and undistributed earnings allocated to participating securities, by the average number of common shares outstanding. Diluted EPS amounts assume the issuance of common stock for all potentially dilutive share equivalents outstanding not classified as participating securities.

The information used to compute basic and diluted EPS attributable to Alcoa common shareholders was as follows (shares in millions):

	Second quarter ended June  30,				Six months ended June 30,
	2011		2010		2011		2010
Income (loss) from continuing operations attributable to Alcoa common shareholders	$	326	$	137	$	635	$	(57	)
Less: preferred stock dividends declared		—		—		1		1
Income (loss) from continuing operations available to common equity		326		137		634		(58	)
Less: dividends and undistributed earnings allocated to participating securities		1		1		2		—
Income (loss) from continuing operations available to Alcoa common shareholders – basic		325		136		632		(58	)
Add: interest expense related to convertible notes		8		8		15		—
Income (loss) from continuing operations available to Alcoa common shareholders – diluted	$	333	$	144	$	647	$	(58	)
Average shares outstanding – basic		1,064		1,021		1,058		1,014
Effect of dilutive securities:
Stock options		9		6		9		—
Stock and performance awards		3		1		3		—
Convertible notes		89		89		89		—
Average shares outstanding – diluted		1,165		1,117		1,159		1,014

Participating securities are defined as unvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents (whether paid or unpaid) and are included in the computation of earnings per share pursuant to the two-class method. Prior to January 1, 2010, under Alcoa's stock-based compensation programs, certain employees were granted stock and performance awards, which entitle those employees to receive nonforfeitable dividends during the vesting period on a basis equivalent to the dividends paid to holders of Alcoa's common stock. As such, these unvested stock and performance awards met the definition of a participating security. Under the two-class method, all earnings, whether distributed or undistributed, are allocated to each class of common stock and participating securities based on their respective rights to receive dividends. At June 30, 2011 and 2010, there were 2 million and 5 million such participating securities outstanding, respectively. None of the loss from continuing operations in the 2010 six-month period was allocated to these participating securities because these awards do not share in any loss generated by Alcoa.

Effective January 1, 2010, new grants of stock and performance awards do not contain a nonforfeitable right to dividends during the vesting period. As a result, an employee will forfeit the right to dividends accrued on unvested awards if that person does not fulfill their service requirement during the vesting period. As such, these awards are not treated as participating securities in the EPS calculation as the employees no longer have equivalent dividend rights as common shareholders. These awards are included in the EPS calculation utilizing the treasury stock method similar to stock options. At June 30, 2011 and 2010, there were 7 million and 3 million such awards outstanding, respectively.

In the 2010 six-month period, basic average shares outstanding and diluted average shares outstanding were the same because the effect of potential shares of common stock was anti-dilutive since Alcoa generated a loss from continuing operations. As a result, 89 million share equivalents related to convertible notes, 25 million stock options, and 3 million stock and performance awards were not included in the computation of diluted EPS. Had Alcoa generated sufficient income from continuing operations in the 2010 six-month period, 89 million and 7 million potential shares of common stock related to the convertible notes and stock options and awards, respectively, would have been included in diluted average shares outstanding.

Options to purchase 19 million and 32 million shares of common stock at a weighted average exercise price of $28.61 and $27.50 per share were outstanding as of June 30, 2011 and 2010, respectively, but were not included in the computation of diluted EPS because they were anti-dilutive, as the exercise prices of the options were greater than the average market price of Alcoa's common stock.