Wall Street welcomes Fed's 'patient' pledge By: CNBC.com News December 18, 2014 at 05:43 AM EST U.S. stock index futures signaled a sharply higher open on Thursday, as Wall Street cheered comments from Federal Reserve Chair Janet Yellen. Read More >> Related Stocks: Accenture Plc Nike Inc Pier 1 Imports Red Hat Sanderson Farms IN Sentinelone Inc Cl A Winnebago Industries