S&P 500 rallies sharply from major support By: MarketWatch October 05, 2010 at 12:23 PM EDT The U.S. markets are back on the offensive following a successful test of major support. Read More >> Related Stocks: Adtran Holdings Inc Anixter International Inc Bancolombia S.A. ADR Canadian Solar Inc EnCana Corporation F5 Networks Harley-Davidson Netgear Inc