what is the treasury stock method 
the treasury stock method is an approach companies use to compute the number of new shares that may potentially be created by unexercised in the money warrants and options where the exercise price is less than the current share price additional shares obtained through the treasury stock method factor into the calculation of the diluted earnings per share eps this method assumes that the proceeds a company receives from an in the money option exercise are used towards repurchasing common shares in the market understanding the treasury stock methodthe treasury stock method states that the basic share count used in calculating a company s earnings per share eps must be increased as a result of outstanding in the money options and warrants which entitle their holders to purchase common shares at an exercise price that s below the current market price to comply with generally accepted accounting principles gaap the treasury stock method must be used by a company when computing its diluted eps this method assumes that options and warrants are exercised at the beginning of the reporting period and a company uses exercise proceeds to purchase common shares at the average market price during that period the number of additional shares that must be added back to the basic share count is calculated as the difference between the assumed share count from the options and warrants exercise and the share count that could have been purchased on the open market example of treasury stock methodconsider a company that reports 100 000 basic shares outstanding 500 000 in net income for the past year and 10 000 in the money options and warrants with an average exercise price of 50 let s assume that the average market price for the shares in the last year was 100 using the basic share count of the 100 000 common shares the company s basic eps is 5 calculated as the net income of 500 000 divided by 100 000 shares but this number ignores the fact that 10 000 shares can be immediately issued if the in the money options and warrants are exercised applying the treasury stock method the company would receive 500 000 in exercise proceeds calculated as 10 000 options and warrants times the average exercise price of 50 which it may use to repurchase 5 000 common shares on the open market at the average stock price of 100 the additional 5 000 shares the difference between 10 000 assumed issued shares and 5 000 assumed repurchased shares represent the net newly issued shares resulting from the potential options and warrants exercise the diluted share count is 105 000 100 000 basic shares 5 000 additional shares the diluted eps is then equal to 4 76 500 000 net income 105 000 diluted shares the number of additional shares that must be added back to the basic share count is calculated as the difference between the assumed share count from the options and warrants exercise and the share count that could have been purchased on the open market 