Over the past few months, buyback of shares by companies with surplus funds was back in fashion. Recently, a few firms resorted to it. At the time of writing, another six, including TCS, NTPC and NMDC, were in the various stages of the process. A single change in the last Budget made them fairly attractive, both for the companies and investors, compared to payment of high dividends. Apart from bonus issues, buybacks and dividends are ways in which firms reward their shareholders.