The big board equities lost ground for a second straight day as higher than expected yields in a United States Treasury auction of five-year notes had investors running for the exits during Wednesday trading on the Canadian markets. For the tale of the tape, the TSX Exchange lost 0.59%, while the TSX Gold Index rallied 3.1% and the TSX Venture Exchange, Canada’s largest junior exploration bourse, surged 2.86% with the advancers swamping the decliners by a 428 to 327 margin on volume of 182 million shares traded.