S&P 500 futures turned negative on Thursday after inflation data for May showed a bigger-than-expected increase, while weekly jobless claims dipped less than estimated. At 8:33 a.m. ET, Dow e-minis were up 38 points, or 0.11%, S&P 500 e-minis were down 3.75 points, or 0.09% and Nasdaq 100 e-minis were down 56.75 points, or 0.41%.