Investors are expressing concern about an amendment quietly inserted in Senate legislation last week that would force new levels of disclosure from participants in the Treasury’s system for getting banks to offload toxic assets.

With the completion of the stress tests on banks, the focus of financial rescue efforts is expected to move to the Treasury’s public/private investment programme (PPIP), which tries to encourage investors to buy toxic assets with the backing of taxpayers’ money and thereby spur banks into new lending.