US Shares to Open Lower Ahead of Fed Minutes By: CNBC.com News August 22, 2012 at 08:38 AM EDT U.S. stock index futures are signaling a lower open on Wall Street Wednesday, after the S&P 500 briefly reached its best level in four years a day earlier. Read More >> Related Stocks: American Eagle Outfitters Chico's Fas GUESS Hewlett-Packard Toll Brothers Inc