Earnings per share 34
Basic earnings per share are calculated by dividing the net income attributable to shareholders by the weighted average number of shares outstanding during the year.
Dilutive potential shares arose under the Management Share Option Plan (MSOP) of adidas AG, which was implemented in 1999. As the required performance criteria for the exercise of the stock options of all tranches of the share option plan have been fulfilled, dilutive potential shares impact the diluted earnings per share calculation see Note 38.
It is also necessary to include dilutive potential shares arising from the convertible bond issuance in October 2003 in the calculation of diluted earnings per share of the financial year 2009 (until conversion) and 2008 as the required conversion criteria were fulfilled at the balance sheet date 2008 see Note 17. As a result, the convertible bond is assumed to have been converted into ordinary shares and the net income is adjusted to eliminate the interest expense less the tax effect.

| Earnings per share | 34 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Year ending Dec. 31, 2009 |
Year ending Dec. 31, 2008 |
|
| Net income attributable to shareholders (€ in millions) | 245 | 642 |
| Weighted average number of shares | 196,220,166 | 197,562,346 |
| Basic earnings per share (in €) | 1.25 | 3.25 |
| Net income attributable to shareholders (€ in millions) | 245 | 642 |
| Interest expense on convertible bond, net of taxes (€ in millions) | 10 | 13 |
| Net income used to determine diluted earnings per share (€ in millions) | 255 | 655 |
| Weighted average number of shares | 196,220,166 | 197,562,346 |
| Weighted share options | 34,369 | 86,542 |
| Weighted assumed conversion convertible bond | 12,983,564 | 15,684,315 |
| Weighted average number of shares for diluted earnings per share | 209,238,099 | 213,333,203 |
| Diluted earnings per share (in €) | 1.22 | 3.07 |
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