Typically stock buybacks will increase the share price, because a company buying back shares indicates that the company is confident in its future prospects. This will drive up the stock price.
Jul 25 2013 11:58 AM
The ROC, ROE will depend on how the buyback is financed - equity or debt. If they company used its current cash then ROC, ROE will be lower. If the company borrowed money for the buyback then the ROE and ROC will be higher (assuming the stock price goes up).