For one Citigroup Inc. trader in London, the morning of May 2, 2022 went from bad to worse.

It was a public holiday in the U.K., so it should have been a quiet day in the markets. A little before 9 a.m., the staffer on Citigroup’s Delta One trading desk who was working from home began putting together a trade that would hedge the bank’s exposure to the MSCI World Index.

Markets immediately started going haywire. Within minutes, the trader realized the mistake and canceled the order. But the damage was done{ai:summary}<p>In the fast-paced world of finance, a simple trade quickly spirals out of control, leading to unexpected consequences. #economy</p>

How a 'fat-finger' glitch by an employee working from home cost a bank US$79 million

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