ARM stocks have risen by as much as 32 percent in Thursday stock trading, apparently on the basis of resurgent rumors of an Apple buyout bid, says Reuters. Though Apple has not yet been reached for comment, a spokeswoman for ARM has denied the existence of any talks, and reiterated statements by CEO Warren East, saying that a takeover would not make any sense. A Panmure Gordon analyst suggests that investors are simply being bullish on ARM's prospects, given its technology's importance in current and forthcoming tablets, like the iPad.