BNN Bloomberg is Canada’s definitive source for business news dedicated exclusively to helping Canadians invest and build their businesses. Oil prices retreated for the fifth straight day Tuesday and Wall Street was poised to open modestly higher as pressure from the bond market eased.With little in the way of corporate earnings or government economic data releases, markets were somewhat subdued in the early going. Futures for the Dow Jones Industrial Average and S&P 500 were up less than 0.1 per cent before the bell, while Nasdaq futures rose 0.3 per cent.The price for a barrel of U.S. crude fell $2.38…