CNBC | Stocks try for gains amid oil climb; biotech weighs CNBC U.S. stocks struggled for gains Thursday, as declines in biotech stocks on earnings offset gains from a jump in oil prices and Facebook's solid quarterly report. The major averages gave up sharp opening gains to briefly turn lower, before holding ... Early stock rally fades; oil jumps above $33 a barrel Stocks higher as oil surges on rumour of Saudi production cut US stocks open higher on earnings, oil prices |