Oct 9 (Reuters) - Canada's main stock index fell broadly on Tuesday, taking cues from world markets, after the International Monetary Fund cut its forecasts for global economic growth, blaming tariff war.
* The IMF cut its global economic growth forecasts for 2018 and 2019, saying the U.S-China trade war was taking a toll and emerging markets were struggling with tighter liquidity and capital outflows. Nine of the 11 major sectors were lower, led by the materials sector's .GSPTTMT 0.88 percent fall.
* The sector, which includes precious and base metals miners and fertilizer companies, was weighed by gold prices, which fell due to a stronger dollar and bullish U.S. interest rate outlook. GOL/
* At 9:47 a.m. ET (13:47 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 77.08 points, or 0.48 percent, at 15,869.09.
* On the macro front, data from the national housing agency showed Canadian housing starts fell in September, compared with the previous month, as multiple urban starts tumbled 8.9 percent, offsetting a 2 percent rise in single-detached urban starts. On the TSX, 57 issues were higher, while 182 issues declined for a 3.19-to-1 ratio to the downside, with 25.38 million shares traded.
* The biggest percentage gainers on the TSX were cannabis producer Canopy Growth Co WEED.TO , which jumped 3.7 percent, followed by New Gold NGD.TO , which rose 3.0 percent.
* Ritchie Bros Auctioneers RBA.TO fell 8.1 percent, the most on the TSX, while the second-biggest decliner was packaging products and paper company Cascades CAS.TO , which slipped 6.6 percent.
* Among the most heavily traded shares by volume was Aurora Cannabis ACB.TO and Wallbridge Mining Co WM.TO .
* The TSX posted no new 52-week highs and 14 new lows.
* Across all Canadian issues there were four new 52-week highs and 63 new lows, with total volume of 44.59 million shares.