U.S. oil price rebounds to 1.39 U.S. dollars after the biggest drop in history, from minus 37.63 U.S. dollars as settlement price on April 20. 

U.S. President Donald Trump considers the drop a short-term financial impact on the oil market. He plans to add as much as 75 million barrels of oil to the nation's Strategic Petroleum Reserve, taking advantage of record low prices.