EU Regulators Reveal Quirky Details of FX Riggers’ Online Chatrooms

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European Union regulators revealed quirky details as they fined five banks more than $1 billion: the names of the online chatrooms traders used to collude on foreign-exchange trading strategies.

Talking all day on chatrooms called “Three way banana splitBloomberg Terminal” and “Semi Grumpy Old Men,” bankers at rival outfits exchanged banter but also commercially sensitive information, according to investigators.