Roku Inc ROKU.O soared 5.2% after the company forecast first-quarter revenue above Wall Street estimates. By Johann M Cherian Feb 16 (Reuters) - U.S. stock indexes were on track to open sharply lower on Thursday after stronger-than-expected producer prices data fed into fears that the Federal Reserve will keep raising interest rates to tame stubbornly high inflation. However, signs of a resilient economy and an acceleration in January consumer prices recently raised concerns among traders that the central bank may not hit pause on its hawkish policies anytime soon, let alone pivot to cutting rates later this year.