Market preview: Stock futures hold on to gains after weekly jobless claims fell slightly more than forecast. S&P +0.2%. EU shares are also higher despite more wretched data, while gold -0.3% and continues yesterday's sell-off. Gap tears 10.4% higher following strong sales growth, but Finisar dives 9.2% in the wake of earnings. Later: Bernanke, ISM manufacturing, construction spending, auto sales.