Stocks clawed higher in midday trading Thursday after getting a boost from details on the ECB's bond-buying plan. But weaker-than-expected economic data in the U.S. is tempering the gains. The latest includes factory orders falling for a sixth straight month in January, down 0.2%. Costco (COSTO) is gaining after beating Wall Street's earnings estimates by $0.17 a share. The wholesaler also reported comp-sales rose domestically and internationally. After the bell, the Fed will release its initial findings from their annual stress test for major banks including Citigroup (C) and blue chips JPMorgan (JPM) and Goldman Sachs (GS).