Nasdaq futures jumped 1 percent on Wednesday as technology stocks led a rebound after concerns about inflation and rising Treasury yields drove one of Wall Street’s worst selloff of this year. Shares of heavyweights Amazon.com Inc., Facebook Inc., Microsoft Corp., Apple, and Google-parent Alphabet Inc. rose between 1 percent and 1.3 percent in premarket trading. Oil firms including Exxon Mobil and Chevron Corp. dipped as a rally in crude prices petered out. The S&P energy sector has gained 3.9 percent so far this week and is on track for its best monthly performance since February. U.S. stocks ended sharply lower on Tuesday in a broad sell-off, with the benchmark S&P 500 index logging its biggest one-day percentage drop since May and the Nasdaq posting its worst daily selloff since March. The S&P 500 index is also set to break its seven-month winning streak as fears about China Evergrande’s default, potential …