NEW YORK (Reuters) - U.S. and UK regulators first raised concerns in April about trading positions that led to a $2 billion-plus loss at JPMorgan Chase & Co, posing questions to senior management at the bank, a source familiar with the situation said on Tuesday.
The U.S. Federal Reserve - JPMorgan's primary regulator - as well as the U.S. Office of the Comptroller of the Currency and the UK Financial Services Authority were all involved in monitoring the bank portfolio that suffered the big derivatives trading loss, the source said.
(This version of the story has been corrected to fix headline and first paragraph to show regulators were aware of trading positions that led to loss, not that they were aware of the $2 billion loss itself)
(Reporting by Jonathan Spicer)