The purchase of treasury stock decreases the number of shares that are outstanding. Since treasury shares are not included in the EPS calculation, the purchase of treasury shares will increase EPS by decreasing the number of shares to which the income must be distributed. A stock dividend increases the number of shares outstanding and will therefore decrease EPS. A stock split increases the number of shares outstanding and will therefore decrease EPS. An increase in the number of authorized shares will have no impact on EPS because EPS is based on the number of shares outstanding, not the number of shares authorized.
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