CANADA STOCKS-TSX retreats from 3-week high to end lower By: Reuters: Company News May 02, 2011 at 17:42 PM EDT * Gold prices fall from record high after bin Laden death Read More >> Related Stocks: Agnico-Eagle Mines Bank of Nova Scotia Barrick Gold Corporation Genpact Ltd Goldcorp Imperial Oil Limited Manulife Financial Corporation Mobile Platforms S&P/TSX Composite