For the first time in history, the price of US crude oil went negative last month. The head of the International Energy Agency called it "Black April."
Oil has rallied "furiously" in recent days because of a steep drop in supply and a recovery in demand, Bank of America analysts said.
Analysts expect the recent rally to continue, with US crude prices breaking $40 a barrel by the end of the year.
But they said any gains would be slowed or reversed if there were a second coronavirus...
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