Wall Street banks secretly shared client information in online chat rooms in order to rig auctions for the $14 trillion US Treasurys market, according to an explosive lawsuit filed in Manhattan federal court on Wednesday.
The move wrongly fattened the banks’ profits and picked profits from clients, the suit claims.
The new accusations, leveled by several pension funds and wealthy individual investors, are contained in an expanded class-action suit originally filed in July 2015 — and include an unusual twist: Some of the evidence came from confidential informants and one of the banks sued in the earlier action.