Billionaires Dumping Stocks, Economist Knows Why

(MoneyNews):  Despite the 6.5% stock market rally over the last three months, 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. He recently complained of “disappointing performance” in…