We examine the short term stock price performance of firms that acquire or sell technology rights. We find significant positive announcement-period abnormal returns to the acquirers and sellers. However, the price increases reverse during the subsequent twenty trading days. These quick fortune...

Using essentially all declared extraordinary and special cash dividends between 1926 and 2001 which are not preceded or followed by the same for a period of three years, we find no robust post-declaration long-term abnormal stock returns, even in sub-samples defined by the special dividend...