Bay Street stocks moved down at open Friday amid marginal selling across a variety of sectors, with the S&P/TSX Composite Index losing 10.90 points or 0.09 percent to 12,647.20.
The Diversified Materials Index was down 0.50 percent, with Teck Resources (TCK_B.TO) and First Quantum Minerals (FM.TO) losing around 1 percent each.
In the oil patch, Trilogy Energy (TET.TO) and Paramount Resources (POU.TO) were down nearly 1 percent each.
Meanwhile, National Bank (NA.TO) rose nearly 1 percent even after reporting lower second quarter net income of C$434 million or C$2.49 per share.
Smart phone maker Research In Motion (BB.TO) added about 1 percent.
Oil and gas company Caza Oil & Gas Inc. (CAZ.TO) jumped 14 percent after announcing that Apollo Investment Corporation, an investment fund managed by Apollo Investment Management, would purchase from it up to US$50 million of senior secured notes of the company.
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