JPMorgan Chase & Co is one of the banks, the news agency said, citing an anonymous source.
The government conducted "stress tests" on the 19 largest U.S. banks to assess their exposure to risky real estate and other loans and to weigh how they might fare if economic conditions deteriorated.
On Monday, the Federal Reserve said all 10 of the banks that were ordered to raise capital had come forward with plans that, if implemented, would raise the needed funds.