U.S. stocks opened with the Dow Jones Industrial Average up 0.35%, the S&P 500 up 0.1%, and the Nasdaq Composite down 0.23%. Tesla (TSLA.O) rose 1.6% after the official unveiling of its "flying" Roadster. Apple (AAPL.O) rose 1% after pre-orders for the iPhone Duo sold out immediately. The memory sector opened lower for the past five days, with SK Hynix (SKHY.O) down 3.8% and SanDisk (SNDK.O) down 3.4%.