BlackBerry (BB 1.71%), a tech and telecom stock with quite an up-and-down history, was trading in one of its valleys over the past few days. According to data compiled by S&P Global Market Intelligence, the Canadian company's share price had eroded by 13% week to date as of Friday early morning. Much of the decline occurred on Wednesday, when the company announced a new financing measure.$175 million worth of convertible senior notes soldBlackBerry revealed that day that it is floating $175 million worth of ...