Stocks closed mixed Wednesday after rebounding from early weakness. Wednesday's trading was volatile, despite better-than-expected factory orders and services data. The Dow Jones industrial average rose 0.6%, with 22 of the 30 components ending higher. The S&P 500 rose 0.2%. But the Nasdaq dropped 0.8% and closed below its 200-day line. Apple's (AAPL) 6% slide weighed on the tech-heavy index. Apple slumped on an IDC report that projected lower