Canada Stock Market UpdatennInvesting.com – Canada stocks were lower after the close on Friday, as losses in the Healthcare, Clean Technology and Energy sectors led shares lower.nnAt the close in Toronto, the S&P/TSX Composite fell 0.63%.nn## Best PerformersnThe best performers of the session on the S&P/TSX Composite were: n- Aya Gold & Silver Inc (TSX:AYA): +7.80% (+0.92 points) to trade at 12.72. n- Laurentian Bank Of Canada (TSX:LB): +4.03% (+1.10 points) to end at 28.40. n- Orla Mining Ltd (TSX:OLA): +3.35% (+0.18 points) to 5.55 in late trade.nn## Worst PerformersnThe worst performers of the session were: n- Advantage Oil & Gas Ltd. (TSX:AAV): -4.86% (-0.44 points) to trade at 8.61. n- Birchcliff Energy Ltd (TSX:BIR): -3.70% (-0.19 points) to end at 4.94. n- Tilray Inc (TSX:TLRY): -3.55% (-0.07 points) to 1.90. nnFalling stocks outnumbered advancing ones on the Toronto Stock Exchange by 491 to 460, with 93 ending unchanged.nnShares in Tilray Inc (TSX:TLRY) fell to all time lows; down 3.55% (-0.07) to 1.90.nn## Market VolatilitynThe S&P/TSX 60 VIX, which measures the implied volatility of S&P/TSX Composite options, was down 1.36% to 10.12.nn## Commodities TradingnGold Futures for December delivery was down 0.26% (-6.60) to $2,566.30 a troy ounce. nnElsewhere in commodities trading: n- Crude oil for delivery in December fell 2.45% (-1.68) to hit $67.02 a barrel. n- January Brent oil contract fell 2.00% (-1.45) to trade at $71.11 a barrel.nn## Currency ExchangenThe CAD/USD was unchanged at 0.71, while CAD/EUR was unchanged at 0.67.nnThe US Dollar Index Futures was up 0.09% at 106.69.