11. Earnings per share

EUR 1,000 2018 2017

Basic earnings per share are calculated by dividing the profit attibutable to the equity holders of the parent company and the weighted average number of ordinary shares outstanding during the year.

Result attributable to equity holders ( EUR 1,000) -536 -15,583
Weighted average number of shares during the year, adjusted to reflect the share issue for the comparative period (1,000 shares) 136,559 122,628
Basic earnings per share, (EUR/share) 0.00 -0.13

In the calculation of diluted earnings per share, the weighted average number of shares is adjusted by the dilutive effect of converting all potential ordinary shares into shares. At end of years 2018 and 2017, the Group had no share option series anymore.