During today's New York trading session, oil futures for August delivery rocketed 0.9 per cent, to $90.65. The commodity has traded higher than psychologically important $90 level for the first time since May 29. Meanwhile, Asian and American stocks turned green on Thursday, pushing oil prices even higher. The Dow Jones Index rose 0.3 per cent, to 12,894, the S&P 500 index advanced or 0.2 per cent, to 1,370.10 and the Nasdaq-100 Index also jumped 0.4 per cent, to 2,631.25, while Nikkei 225 Index increased by 0.79 per cent to 8,795.55.