Alpha and Omega Semiconductor (AOSL) shares soared 6.7% in the last trading session to close at $39.62. The move was backed by solid volume with far more shares changing hands than in a normal session. This compares to the stock's 21.1% gain over the past four weeks.Alpha and Omega Semiconductor extended its rally, driven by growing momentum across its power semiconductors, including Power MOSFET, IGBT, IPM and Power IC. Increasing demand for newer products, including tablets, graphics cards and AI applicat ...