CANADA STOCKS-TSX reverses early gains as gold stocks weigh

Aug 25 (Reuters) - Canada’s main stock index shed early gains to trade flat on Tuesday as gold stocks slipped on hopes surrounding a potential COVID-19 vaccine and positive U.S.-China trade front.

* The energy sector climbed 0.7% as U.S. crude prices were up 1.9% a barrel, while Brent crude added 1.8%.

* While the materials sector, which includes precious and base metals miners and fertilizer companies, lost 0.9% as gold futures fell 0.5% to $1,918.7 an ounce.

* At 0940 a.m. ET (1340 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 3.85 points, or 0.02%, at 16,622.79.

* The financials sector gained 0.5%, while the industrials sector fell 0.2%.

* On the TSX, 82 issues were higher, while 132 issues declined for a 1.61-to-1 ratio to the downside, with 11.12 million shares traded.

* The largest percentage gainers on the TSX were Bank of Montreal, which jumped 4.5% after the lender posted upbeat third-quarter numbers.

* Its gains were followed by oil producer Crescent Point Energy Corp, which rose 3.3%.

* The fuel-cell products developer Ballard Power Systems Inc fell 4%, the most on the TSX, and the second-biggest decliner was Aurinia Pharmaceuticals Inc, down 3.1%.

* The most heavily traded shares by volume were Bombardier Inc, D-BOX Technologies Inc, and Northern Dynasty Minerals Ltd.

* The TSX posted one new 52-week highs and no fresh lows.

* Across all Canadian issues there were 19 new 52-week highs and three new lows, with total volume of 26.07 million shares. (Reporting by Amal S in Bengaluru, Editing by Sherry Jacob-Phillips)