CBC.ca | TSX, Canadian dollar and oil price poised to close out bleak 2015 CBC.ca The TSX's biggest drag has been oil prices, which this year continued the decline they started in the latter half of 2014. Since Dec. 31 last year, the price of a barrel of West Texas Intermediate has lost 38.6 per cent in 2015, far and away its worst ... At the open: TSX falls as slide in oil prices weighs CANADA STOCKS-TSX falls as slide in oil prices weighs |