On Friday, RIM’s shares went from $24.08 to $27.28, a 13% increase. More than 14 million RIM shares traded, while 1.5 million is the average. This was caused by a rumor on Wallstreet that the company was going to be bought out or undergo a hostile takeover, with HP’s name at the top of the list of companies doing the buying, according to Reuters. [Brighthand]