Apple May Buy Japanese Venture that Makes Key Microchips for iPhone Screens and GT Advanced Technologies Gets Goldman Sachs Price Target Upgrade

GT Advanced Technologies Inc. (NASDAQ: GTAT) shares climbed higher after Goldman Sachs raised its price target on the stock in a note to investors on Tuesday. Goldman Sachs analyst Brian Lee raised his 2015 and 2016 earnings per share estimates for GT Advanced. GT Advanced's deal to supply sapphire for upcoming Apple (AAPL) devices is worth $15 per share for GT if the deal goes as expected, and up to $25 if the deal exceeds expectations, contended Lee. The analyst raised his price target on the stock from $20 to $24 and kept a Buy rating on the shares. GT Advanced Technologies Inc., a