A trading mistake at Citigroup in 2022 has led to a $78 million fine against the bank. The "fat-finger" trade caused a brief flash crash in European stocks in May 2022. The brief flash crash caused by the mistaken trade briefly wiped out $322 billion in market value. A trader in Citigroup's London unit entered one too many zeros in a trade in May 2022, sparking a short-lived flash crash in European stocks. AdvertisementThe $78 million fine from UK regulators is in addition to about $50 million Citigroup lost on the trade, bringing the total cost of the fat-finger trade to about $130 million.

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Persons: — Organizations: Citigroup, Service, Bloomberg, Bank of England's Prudential Regulatory Authority Locations: Citigroup's London, Stockholm