S&P/TSX composite index closed up 116.62 points on Monday
But crude oil had its worst week of the year
Conservative leader says corridor could improve certainty for investors
Trade angst and a drop in the price of oil fuelled the decline
The energy, metals and mining and financial sectors all took a hit on Wednesday
Retail banking losses were offset by wealth management gains
Sales at gas stations increased by 6%
The S&P/TSX composite index closed up 24.72 points on Tuesday
The shares represent approximately a 7.1% stake
The Canadian dollar is also down