Stocks opened generally higher, while a bruised Apple (AAPL) dragged on the Nasdaq. Earnings reports, some solid jobs numbers and a positive leading indicators index for December gave other sectors a boost. The Dow Jones industrial average and the S&P 500 gained 0.6%. The Nasdaq was down 0.3%. Volume was a fraction lower on the Nasdaq, and down 11% on the NYSE compared with the same time Wednesday. Stocks got a boost from the Labor Department,