
As per the Bloomberg report, a Citigroup Inc's (NYSE:C) trader made a mistake "inputting a transaction," the bank said, after a selloff in Swedish stocks in five minutes wreaked havoc, wiping out €300 billion ($315 billion) at one point.
The bank said it identified the error "within minutes" and corrected it. The incident is a fresh setback to Citigroup's efforts to improve controls.