Nvidia Corp NVDA.O slid 5.2% after Baird downgraded the chipmaker's stock to "neutral" from "outperform," citing order cancellations and potential demand slowdown. By Stephen Culp NEW YORK, April 11 (Reuters) - Wall Street closed sharply lower on Monday as investors started the holiday-shortened week in a risk-off mood, as rising bond yields weighed on market-leading growth stocks ahead of crucial inflation data. US/ The U.S. Federal Reserve has vowed to aggressively tackle scorching inflation, and market participants largely expect a series of 50-basis-point interest rate hikes from the central bank in the coming months.