In trading on Thursday, shares of Westport Innovations, Inc.entered into oversold territory, hitting an RSI reading of 28.9, after changing hands as low as $12.71 per share. By comparison, the current RSI reading of the S&P 500 ETF (SPY) is 58.2. A bullish investor could look at WPRT’s 28.9 RSI reading today as a sign that the recent heavy selling is in the process of … Continue reading NASDAQ Volatile Stocks: Westport Innovations (NASDAQ:WPRT), Pharmacyclics (NASDAQ:PCYC), QLogic Corporation (NASDAQ:QLGC), Avanir Pharmaceuticals Inc (NASDAQ:AVNR)