New details from court documents and sources close to the Libor scandal investigation suggest that groups of traders working at three major European banks were heavily involved in rigging global benchmark interest rates.
Some of those traders, including one who used to work at Barclays Plc in New York, still have senior positions on Wall Street trading desks.
Until now, most of the attention has involved traders at Barclays, which last month reached a $453 million settlement with US and UK authorities for its role in the manipulation of rates.
