“The banter and slang used by traders can make it hard for outsiders to tell what they are doing, much less whether they’re up to no good. But there are telltale patterns and keywords that signal trouble—and systems that can sift through chat logs and transaction records looking for them.
Some of the more colorful expressions unearthed in recent investigations (for example, “Betty on the mumble,” where a betty is short for the British pound) come from investigations into market manipulation. But rigging the markets for interest rates, foreign exchange, and commodities, to name a few, is only one type of misdeed that have landed big banks in legal hot water of late. ‘
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