So far this year Wheaton Precious Metals (NYSE: WPM) shares haven’t done much, bouncing along with the price of gold and silver. That showing is no different than that of other precious metals stocks, including Barrick Gold (NYSE: ABX) and Goldcorp (NYSE: GG). But Wheaton isn’t a miner and that makes a big difference. Here are two reasons why you might want to buy Wheaton Precious Metals today.