US stocks turned positive after flipping between small gains and losses earlier in Wednesday’s session, as oil prices halted a sharp advance, easing inflation concerns as traders weigh the Federal Reserve’s potential path for interest-rate hikes. The S&P 500 Index rose 0.5% at 12:25 p.m. in New York, putting the benchmark on track to snap a three-session losing streak. The Nasdaq 100 Index, meanwhile, was little changed.