Speaking at the New York Times' Dealbook Summit, Sam Bankman-Fried said he did not knowingly commingle customer funds on FTX with funds at his proprietary trading firm, Alameda Research.

The liquidity crunch at FTX came after Bankman-Fried secretly moved $US10 billion ($A15 billion) of FTX customer funds to Alameda Research, Reuters reported, citing two people familiar with the matter. At least $US1 billion in customer funds had vanished, the people said.

Bankman-Fried told Reuters the company did not "secretly transfer" but rather misread its "confusing internal labelling".

FTX filed for bankruptcy and Bankman-Fried stepped down as chief executive on November 11 after traders pulled $US6 billion from the platform in three days and rival exchange Binance abandoned a rescue deal.

"By late on November 6 we were putting together all of the data... that obviously should have been part of the dashboards I was always looking at... and when we looked at that, there was a serious problem there," Bankman-Fried said.

Bankman-Fried added that he "didn't ever try to commit fraud" and that he was "shocked" by the events of the past few weeks that led to the company's demise.

The implosion marked a stunning fall from grace for the 30-year-old entrepreneur who rode a cryptocurrency boom to a net worth that Forbes pegged a year ago at $US26.5 billion.

After launching FTX in 2019, he became an influential political donor and pledged to donate most of his earnings to charities.

Since FTX filed for bankruptcy, Bankman-Fried has distanced himself from the image he projected in media interviews and on Capitol Hill, telling a Vox reporter his advocacy for a crypto regulatory framework was "just PR" and his discussions on ethics within the industry were at least partly a front.

Australian Associated Press