Why BlackBerry, iRobot, and Even B&G Foods Stocks All Popped Today

Wednesday is looking -- perversely -- like it's going to be another great day for some of the market's most-dissed stocks, with heavily shorted shares of BlackBerry (NYSE: BB), iRobot (NASDAQ: IRBT), and B&G Foods (NYSE: BGS) all rocketing higher in price on enthusiasm from momentum traders. In 11:35 a.m. EST trading, shares of BlackBerry were up 19.9%, iRobot was up 19.6%, and even B&G Foods -- ordinarily a rather staid small-cap producer of breakfast cereals and canned veggies -- was up 15.8%. This morning, analysts at Scotiabank downgraded shares of BlackBerry to underperform.