CANADA STOCKS-TSX falls 4 percent, biggest drop in two years By: Reuters: Company News August 05, 2011 at 13:21 PM EDT *Magna dives more than 12 percent (Updates to afternoon) Read More >> Related Stocks: Agnico-Eagle Mines Genpact Ltd Goldcorp Magna International Mistras Group Inc S&P/TSX Composite Sempra Energy Suncor Energy Inc