S&P 500 returns to the scene of the breakdown By: MarketWatch March 22, 2011 at 10:45 AM EDT After breaking down last week, the U.S. markets have rallied respectably from the March lows. Read More >> Related Stocks: Aerovironment Inc Cisco Systems Coeur Mining Inc Commvault Systems Intel Corp Microsoft SPDR S&P 500 ETF Trust Silver Trust Ishares Unit Corp