(Update prices, adds sector details)
March 16 (Reuters) - Canada’s main stock index fell on Tuesday, weighed by energy and material stocks, as data showed that foreign investment in Canadian securities was the lowest in six months in January.
* Foreign investors bought a net C$1.27 billion ($1.02 billion) in Canadian securities in January, led by provincial government bonds, Statistics Canada said.
* At 9:43 a.m. ET (13:43 GMT), the Toronto Stock Exchange’s S&P/TSX composite index was down 39.68 points, or 0.21%, at 18,915.07.
* The energy sector dropped 1.5% as U.S. crude prices were down 1.7% a barrel and Brent crude lost 1.5%.
* The materials sector, which includes precious and base metals miners and fertilizer companies, lost 0.8%.
* On the TSX, 74 issues were higher, while 141 issues declined for a 1.91-to-1 ratio to the downside, with 23.97 million shares traded.
* Oil producer Tourmaline Oil Corp fell 3%, the most on the TSX, and the second biggest decliner was Lundin Mining Corporation, down 2.6%.
* The largest percentage gainer on the TSX was GFL Environmental Inc, which jumped 3.4%, after the environmental services company announced it would acquire Terrapure Environmental Ltd.
* Its gains were followed by semiconductor maker Celestica Inc, which rose 2.5%.
* The most heavily traded shares by volume were Hydro One Ltd, Canadian Natural Resources Limited and Whitecap Resources Inc.
* The TSX posted 16 new 52-week highs and no new low.
* Across all Canadian issues there were 108 new 52-week highs and eight new lows, with total volume of 52.90 million shares. (Reporting by Amal S in Bengaluru; Editing by Amy Caren Daniel)