TSX flat on day, set for 5 percent gain for third quarter

Canada's main stock index turned barely lower in morning trade on Friday as materials and energy stocks slipped, offset by small gains for banking and industrial stocks after data showed surprisingly strong economic growth in July. The Toronto Stock Exchange's S&P/TSX composite index is on track for an almost 5 percent gain in the third quarter, and is close to breaking to its highest level in more than a year. The energy group retreated 0.1 percent, although pipeline company Enbridge Inc ad