[Fed: there are a large number of floating losses on their balance sheets. More than 700 US banks are at risk. According to a recent report released by the Federal Reserve, more than 700 US banks are at risk because of a large number of floating losses on their balance sheets. The Fed said the rate hike was the catalyst for large losses at Bank of America. More than 700 US banks, which report losses of more than 50 per cent of their capital, are facing "significant safety and solvency" risks because of large floating losses on their balance sheets, according to the Fed report.