US bank regulators are considering a stricter framework for asset management companies that hold large stakes in banks. On Tuesday, the Federal Deposit Insurance Corporation (FDIC) voted in favor of a proposal that gives the agency more power to decide whether to impose stricter oversight on asset management companies, such as BlackRock or Vanguard Group, or other companies that hold a large amount of shares in banks. Officials of the agency also said they may review existing so-called 'passive agreements,' with a focus on strengthening the FDIC's supervision of these companies' commitments not to actively participate in bank management. According to the law, a third party that acquires more than 10% of a bank's shares can be considered to have controlling rights over the bank and be subject to greater scrutiny. However, under 'passive agreements,' investors can promise regulatory agencies not to exert influence over the banks and avoid these restrictions. Under the proposal, the FDIC will eliminate an existing exemption that allows it to refrain from reviewing new large investments in banks as long as the Federal Reserve agrees.