* TSX down 46.87 points, or 0.31 percent, at 15,027.38
* Eight of the TSX's 10 main groups move lower
TORONTO, Aug 11 (Reuters) - Canada's main stock index lost ground on Friday, weighed by moves lower in financial stocks and a fall in shares of telecommunications company Telus Corp T.TO, which posted lower-than-expected quarterly earnings.
The index is on track for a 1.5 percent fall over the week.
The financials group slipped 0.6 percent, with Brookfield Asset Management Inc BAMa.TO down 1 percent to C$48.43, extending losses after reporting earnings on Thursday, and Bank of Montreal BMO.TO lost 0.7 percent to C$92.34.
Telus was one of the most influential movers on the index, falling 1.4 percent to C$44.90. 10:16 a.m. ET (1416 GMT), the Toronto Stock Exchange's S&P/TSX composite index .GSPTSE was down 46.87 points, or 0.31 percent, at 15,027.38. Eight of the index's 10 main groups were in negative territory, although decliners only outnumbered advancers by a 1.3-to-1 ratio.
Auto parts maker Magna International Inc MG.TO fell 1.5 percent to C$58.85 despite reporting better-than-forecast quarterly profit and raising its full-year sales forecast for the second time in three months. Precious Metals Corp WPM.TO fell 2.7 percent to C$24.8 after it reported lower-than-expected revenue after the close on Thursday.
The materials group, which includes precious and base metals miners and fertilizer companies, lost 0.2 percent.
Enerplus Corp ERF.TO jumped 6.1 percent to C$11.42 after the oil and gas company increased its production guidance, while the broader energy group was little changed.