Ina Drew, former chief investment officer with JPMorgan Chase & Co., center, arrives to a Senate Permanent Subcommittee on Investigations hearing

Ina Drew, the former JPMorgan Chase executive who earned millions while in charge of the unit that made the disastrous "London whale" trades, on Friday refused to accept responsibility for the $6.2 billion in losses revealed last year.

Testifying before a Senate panel, the former chief investment officer instead pointed a finger at the traders and managers below her. They did not appear at the hearing because they are in London and outside the Senate's jurisdiction.