Nov 19 (Reuters) - Canada's main stock index fell on Thursday, weighed by energy stocks as oil prices slipped on concerns over a surge in COVID-19 cases and the impact of tighter coronavirus-related restrictions around the globe on fuel demand.
* The energy sector .SPTTEN dropped 1.1% and was among the worst performing sectors on the main index.
* The sector pressured by oil producers Imperial Oil Limited IMO.TO which fell 2.2%, the most on the TSX, and Tourmaline Oil Corp TOU.TO , down 2%.
* At 9:39 a.m. ET (1439 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 28.59 points, or 0.17%, at 16,861.23.
* The materials sector .GSPTTMT , which includes precious and base metals miners and fertilizer companies, lost 0.2% as gold futures GCc1 fell 0.8%. GOL/
* On the TSX, 81 issues were higher, while 131 issues declined for a 1.62-to-1 ratio to the downside, with 15.64 million shares traded.
* The largest percentage gainers on the TSX were Norbord Inc OSB.TO , which jumped 12.3%, after West Fraser Timber WFT.TO agreed to buy the lumber producer, and e-commerce platform Shopify Inc SHOP.TO , which rose 2.6%.
* The most heavily traded shares by volume were Sun Life Financial Inc SLF.TO , Suncor Energy Inc SU.TO and Air Canada AC.TO .
* The TSX posted two new 52-week highs and no new low.
* Across all Canadian issues there were 11 new 52-week highs and two new lows, with total volume of 29.00 million shares.