Warren Buffett and Berkshire Hathaway take a small investment stake in Constellation Brands in the fourth quarter. The investment comes as the stock has been hit hard by fears of Donald Trump's tariffs on Mexico. Get 5 stock picks identified before their ...

Even before Donald Trump shattered the idea of a western alliance over the weekend, an uneasy spectre had begun to roil through the global economy, with troubles brewing on at least three fronts.