A handful of billionaires are quietly dumping their American stocks . . . and fast.

Warren Buffett, who has been a cheerleader for U.S. stocks for quite some time, is dumping shares at an alarming rate.

Buffett has been drastically reducing his exposure to stocks that depend on consumer purchasing habits.

Buffett isn’t alone.

Fellow billionaire John Paulson, who made a fortune betting on the subprime mortgage meltdown, is clearing out of U.S. stocks too.

Billionaire George Soros recently sold nearly all of his bank stocks, including shares of JPMorgan Chase, Citigroup, and Goldman Sachs. Between the three banks, Soros sold more than a million shares.

So why are these billionaires dumping their shares of U.S. companies?