Third Quarter

Nine Months

2011

2010

2011

2010

(in millions, except per share amounts)

(restated)

Basic earnings per share:

Net income (loss)

$

761.2

$

164.6

$

859.2

$

677.2

Less: Distributed and undistributed income (loss) available to nonvested shareholders

0.4

0.3

0.5

1.3

Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries

$

760.8

$

164.3

$

858.7

$

675.9

Basic shares

183.2

183.7

184.0

Basic earnings per share

$

4.15

$

0.89

$

4.67

$

3.67

Diluted earnings per share:

Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries

$

760.8

$

164.3

$

858.7

$

675.9

Plus: Re-allocation of undistributed income (loss) available to nonvested shareholders of AGL and subsidiaries

—

Distributed and undistributed income (loss) available to common shareholders of AGL and subsidiaries

$

760.8

$

164.3

$

858.7

$

675.9

Basic shares

183.2

183.7

184.0

Effect of dilutive securities:

Options and restricted stock awards

0.8

0.9

Equity units

—

2.8

1.7

4.0

Diluted shares

184.0

187.3

186.3

188.9

Diluted earnings per share

$

4.13

$

0.88

$

4.61

$

3.58

Potentially dilutive securities excluded from computation of earnings per share because of antidilutive effect

3.5

4.7

3.4

3.2