One of Wall Street’s favorite short bets looks ready for a comeback after the Canadian dollar plunged to its lowest point in more than two months. The currency’s fall Monday undoes all its gains since the Bank of Canada first expressed hope at its April interest-rate decision the economic fallout from crude oil’s price collapse would be short-lived. Crude prices had stabilized in recent months and helped the currency recover, but Brent crude fell below $60 a barrel Monday for the first time since April. The renewed pressure on crude prices comes after signs the fallout from their first leg down wasn’t as short-lived as the Bank of Canada thought. A report last week showed the economy contracted for a fourth straight month in April, bringing annualized growth to the slowest in two years. That’s raised doubts about the central bank’s forecasts for a strong rebound in the second […]