US-STOCKS-Wall Street gains on energy, financial shares By: Reuters: Company News December 20, 2010 at 14:47 PM EST * Indexes add to year-end rally, S&P up 11.6 pct in 2010 Read More >> Related Stocks: AT&T Inc Allegheny Technologies Amazon.com Boeing Co Chevron Corp JPMorgan Chase & Co Qualcomm, Inc. Standard & Poors 500