Albemarle Corp ended 1.67% lower after Goldman Sachs downgraded the lithium producer to "sell" from "neutral." Wall Street extended those gains as Fed Chair Jerome Powell during his news conference struck an upbeat tone https://www.reuters.com/markets/us/fed-prepares-stiffen-inflation-response-post-transitory-world-2021-12-15 about the U.S. economic recovery and expressed willingness to raise interest rates as necessary to control inflation. "What the markets are saying is, because the Fed is increasing their taper, maybe they feel inflation is under control," said Tom Martin, senior portfolio manager at Globalt Investments in Atlanta.