U.S. August PPI lower than expected, U.S. stock index futures surge briefly

Nasdaq futures rose 0.48% intraday, S&P 500 index futures rose 0.49%, and Dow futures rose 0.02%; U.S. Treasury yields fell sharply in the short term, with the 2-year Treasury yield down more than 3 basis points; the 10-year Treasury yield fell over 2 basis points; the U.S. dollar index declined in the short term, down 0.06% intraday