S&P's Most Shorted By: CNBC.com News August 04, 2011 at 21:06 PM EDT Following a broad selloff on Thursday due to global economic worries, the Dow and S&P 500 are on pace for their largest weekly losses since the heart of the 2008 financial crisis.� Read More >> Related Stocks: Federated Investors First Solar GX Defense Tech ETF GameStop Corp J C Penney Company Inc Lennar Corp Netflix Urban Outfitters