The Big 4 U.S. Banks Lost $65 Billion In Market Cap

British bank stocks have been pounded since the Brexit vote last Thurday, with shares of Lloyds Banking Group (ADR) LYG, Barclays PLC (ADR) BCS and Royal Bank of Scotland Group RBS each down more than 35 percent since the vote for Brexit.

Unfortunately for bank investors around the world, Brexit uncertainty and fears about financial contagion have had a wide-reaching impact outside the U.K. The Ishares MSCI Europe Fincls Sctr Indx Fd EUFN is down 19.7 percent since the vote.

Related Link: How Much Have European Banks Lost In Market Cap Since The Brexit Vote?

Even U.S. banks have been pounded. Bank of America Corp BAC is down 11.2 percent, Citigroup Inc C is down 11.4 percent, JPMorgan Chase & Co JPM is down 8.6 percent and Wells Fargo & Co WFC is down 5.1 percent.

Ironically, each bank passed the Federal Reserve annual stress test by a wide margin on the day prior to the Brexit vote. The stress test is a measure of whether or not the banks have adequate capital levels to survive another global financial crisis.

While the “Big Four” U.S. banks themselves may be healthier than ever, U.S. investors are certainly not happy with the Brexit fallout. The four banks have lost a combined $64.6 billion in market caps since the Brexit vote.

Disclosure: the author is long BAC and C.