Earnings per Common Share
Basic earnings per share is computed by dividing net income attributable to common stockholders by the weighted average number of shares outstanding during the period. All outstanding unvested restricted share awards contain rights to non-forfeitable dividends and participate in undistributed earnings with common shareholders and, accordingly, are considered participating securities that are included in the two-class method of computing basic earnings per share (“EPS”). Both the unvested restricted shares and other potentially dilutive common shares, and the related impact to earnings, are considered when calculating earnings per share on a diluted basis. The Company’s earnings per common share are determined as follows (dollars in thousands, except per share data):
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|
For the three months ended |
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For the six months ended |
|
|
|
6-30-12 |
|
6-30-11 |
|
6-30-12 |
|
6-30-11 |
|
Basic and diluted shares outstanding |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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Weighted average common shares - basic |
|
95,308,163 |
|
87,317,602 |
|
95,082,172 |
|
86,746,992 |
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|
|
|
|
|
|
|
|
|
|
Weighted average DownREIT units outstanding |
|
7,500 |
|
7,707 |
|
7,500 |
|
8,992 |
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|
|
|
|
|
|
|
|
|
|
Effect of dilutive securities |
|
677,162 |
|
871,129 |
|
730,531 |
|
841,997 |
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|
|
|
|
|
|
|
|
|
|
Weighted average common shares - diluted |
|
95,992,825 |
|
88,196,438 |
|
95,820,203 |
|
87,597,981 |
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|
|
|
|
|
|
|
|
|
|
Calculation of Earnings per Share - basic |
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|
|
|
|
|
|
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|
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Net income attributable to common stockholders |
|
$ |
156,909 |
|
$ |
43,373 |
|
$ |
214,667 |
|
$ |
73,713 |
|
Net income allocated to unvested restricted shares |
|
(547 |
) |
(123 |
) |
(845 |
) |
(206 |
) |
Net income attributable to common stockholders, adjusted |
|
$ |
156,362 |
|
$ |
43,250 |
|
$ |
213,822 |
|
$ |
73,507 |
|
|
|
|
|
|
|
|
|
|
|
Weighted average common shares - basic |
|
95,308,163 |
|
87,317,602 |
|
95,082,172 |
|
86,746,992 |
|
|
|
|
|
|
|
|
|
|
|
Earnings per common share - basic |
|
$ |
1.64 |
|
$ |
0.50 |
|
$ |
2.25 |
|
$ |
0.85 |
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|
|
|
|
|
|
|
|
|
|
Calculation of Earnings per Share - diluted |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income attributable to common stockholders |
|
$ |
156,909 |
|
$ |
43,373 |
|
$ |
214,667 |
|
$ |
73,713 |
|
Add: noncontrolling interests of DownREIT unitholders in consolidated partnerships, including discontinued operations |
|
7 |
|
7 |
|
13 |
|
13 |
|
|
|
|
|
|
|
|
|
|
|
Adjusted net income attributable to common stockholders |
|
$ |
156,916 |
|
$ |
43,380 |
|
$ |
214,680 |
|
$ |
73,726 |
|
|
|
|
|
|
|
|
|
|
|
Weighted average common shares - diluted |
|
95,992,825 |
|
88,196,438 |
|
95,820,203 |
|
87,597,981 |
|
|
|
|
|
|
|
|
|
|
|
Earnings per common share - diluted |
|
$ |
1.63 |
|
$ |
0.49 |
|
$ |
2.24 |
|
$ |
0.84 |
|
Certain options to purchase shares of common stock in the amounts of 424,357 and 320,698 were outstanding at June 30, 2012 and 2011, respectively, but were not included in the computation of diluted earnings per share because such options were anti-dilutive.
The Company is required to estimate the forfeiture of stock options and recognize compensation cost net of the estimated forfeitures. The estimated forfeitures included in compensation cost are adjusted to reflect actual forfeitures at the end of the vesting period. The forfeiture rate at June 30, 2012 is based on the average forfeiture activity over a period equal to the estimated life of the stock options, and was 0.3%. The application of estimated forfeitures did not materially impact compensation expense for the three and six months ended June 30, 2012 or 2011. |