Stock futures pulled out of mixed trade to solid gains ahead of Thursday's open, aided by a wave of big earnings reports and healthy housing and jobs data. Dow futures reversed early losses to trade up 37 points. Nasdaq 100 futures flexed a 13-point advance and S&P 500 futures rose 6.25 points. The Labor Department said jobless claims dipped 10%, to 335,000 in the week ended Jan. 12. That was down from a downwardly revised 372,000 claims in the