TORONTO (Reuters) - Canada's main stock index ended lower on Wednesday, hurt by losses among miners with weaker copper and gold prices, a pullback in technology stocks led by Shopify Inc SHOP.TO and a fall in shares of Canadian National Railway Co CNR.TO.
Better-than-expected quarterly earnings boosted Royal Bank of Canada RY.TO, the country's largest bank by market value, while several other heavyweight financial stocks also gained.
* The Toronto Stock Exchange's S&P/TSX composite index .GSPTSE ended down 61.92 points, or 0.39 percent, at 15,967.72. Seven of the index's 10 main sectors finished lower, with three decliners for every two advancers overall.
* CN Rail fell as much as 4.9 percent, to its lowest level since March, before recovering somewhat to end down 1.8 percent at C$98.20. That was its worst one-day fall since July 26.
* CN Rail’s chief financial officer said its fourth quarter may be a “bit more difficult” because of an early winter and a couple of derailments.
* Royal Bank of Canada RY.TO gained 0.9 percent to C$101.38, while the overall financial sector rose 0.4 percent.
* Shopify Inc SHOP.TO fell 7 percent to C$133.40, erasing gains the e-commerce software company's stock had made after the Black Friday and Cyber Monday shopping days. The technology group fell 2.6 percent overall.
* The materials group, which includes precious and base metals miners and fertilizer companies, lost 1.3 percent as prices for gold as well as copper, aluminum and other base metals fell.
* Potash Corp POT.TO added 0.6 percent to C$25.08 after its chief executive said he expects a "very tight" balance of potash supply and demand in 2018 and that the company had received "broad interest" from Chinese buyers interested in its stake in a Chilean lithium producer.
Reporting by Alastair Sharp; editing by Jonathan Oatis and Grant McCool
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