Nov 11 (Reuters) - Canada's main stock index fell on Monday after rallying for six days, dragged by energy companies tracking lower oil prices, while investors stayed cautious on renewed uncertainty over a trade deal between Washington and Beijing.
* At 09:45 a.m. ET (14:45 GMT), the Toronto Stock Exchange's S&P/TSX composite index was down 39.39 points, or 0.23%, at 16,838.03.
* Nine of the index's 11 major sectors were fell, led by the energy sector which dropped 1.2% as U.S. crude prices fell 1.5% a barrel, while Brent crude lost 1.1%.
* The financials sector slipped 0.3%, while the industrials sector fell 0.2%.
* The materials sector, which includes precious and base metals miners, lost 0.2% even though gold futures remained unchanged at $1,461 an ounce.
* Open Text Corp rose nearly 2% after the company agreed to buy cloud security company Carbonite Inc for nearly $800 million in cash.
* On the TSX, 87 issues were higher, while 139 issues declined for a 1.60-to-1 ratio to the downside, with 9.26 million shares traded.
* The largest percentage gainers on the TSX were Turquoise Hill Resources Ltd and Ballard Power Systems Inc .
* Premium Brands Holding Corp fell 7.6%, the most on the TSX, while the second-biggest decliner was Semafo Inc .
* The most heavily traded shares by volume were Katanga Mining Ltd, Aurora Cannabis and Beta Pro Natural Gas.
* The TSX posted five new 52-week highs and one new low.
* Across all Canadian issues there were 25 new 52-week highs and 12 new lows, with total volume of 18.51 million shares.
Reporting by Agamoni Ghosh