Among other stocks, U.S.-listed shares of BaiduBIDU.O gained 2.0% as China's biggest internet search engine provider's third-quarter revenue beat estimates. By Amruta Khandekar and Shristi Achar A Nov 21 (Reuters) - U.S. stock index futures inched lower on Tuesday as investors stayed on the sidelines ahead of artificial intelligence chip leader Nvidia's quarterly report and the release of the Federal Reserve's meeting minutes. Before the quarterly report, minutes of the Fed's November meeting are likely to offer more cues on the monetary policy path after evidence of slowing inflation boosted expectations that U.S. interest rates had peaked.