US STOCKS SNAPSHOT-Futures turn positive after Fed chief Powell's remarks

U.S. stock index futures turned positive on Wednesday after Federal Reserve Chair Jerome Powell said the central bank was ready to "act as appropriate" to sustain a decade-long expansion, bolstering expectations of an interest rate cut later this month.

At 8:33 a.m. ET, Dow e-minis were up 41 points, or 0.15%. S&P 500 e-minis were up 6.5 points, or 0.22% and Nasdaq 100 e-minis were up 32 points, or 0.41%.

Minutes before the release of his comments, Dow e-minis were down 60 points, or 0.22%. S&P 500 e-minis were down 5.75 points, or 0.19% and Nasdaq 100 e-minis were down 12 points, or 0.15%.