London Whale’s Boss Martin-Artajo Sued by JPMorgan

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JPMorgan Chase & Co. sued the executive responsible for supervising Bruno Iksil, the trader nicknamed the London Whale for market-moving wagers at the division responsible for a $6.2 billion trading loss.

Javier Martin-Artajo, Iksil’s boss in the chief investment office, is a defendant in a London lawsuit filed Oct. 22 by the bank and made public today. The court filings didn’t reveal any details of the complaint. Both men have left the bank.