How a small group of traders made about $500 million in a single day

From marketwatch.com

When crude prices plunged into negative territory for the first time ever back in April, one thing was clear: There were some serious losers — and winners — in the oil pits. A few months later, Bloomberg News has identified a remarkable example of the latter. About a dozen veteran traders at tiny U.K. firm called Vega Capital London Ltd. pocketed a whopping $500 million when the price of a barrel of oil dropped $40 in an hour that day and settled at negative-$37 a barrel, according to a source quoted in the story. ‘Vega’s traders made more money than they could have dreamed of — and found themselves in the ... (full story)