Software giant Microsoft is boosting its huge share buyback programme by 16.2 billion dollars, the company said Friday accoring to dpa. The company is sitting on an estimated 35 billion dollars in cash and short term assets and sees the buyback as a way to boost its share price. Microsoft had previously said it planned to buy some 20 billion dollars worth of shares by June 2011, but increased that target Friday by 16 billion dollars. It also revealed that it expects to acquire 155 million shares at 24.75 dollars per share for a total 3.8 billion dollars following a tender which expired late Thursday as part of buyback programme.