UPDATE 2-US accounting board, SEC discuss fair value-source

But investors are loathe to see any suspension of the fair value rules, as many have lauded the increased transparency the new rules provided.

In a survey of about 3,200 investment professionals from the CFA Institute last week, 73 percent of investors said financial firms should still be required to write-down the value of derivatives to current market values.

"It provides investors with better information to make their decisions," said David Larsen, managing director at financial advisory firm Duff and Phelps. (Reporting by Emily Chasan in New York, Rachelle Younglai in Washington, editing by Maureen Bavdek and Andre Grenon)