In this video, Motley Fool analyst Taylor Muckerman highlights some risks of investing in Silver Wheaton. First, Silver Wheaton typically signs long-term contracts with miners, but has no control over mine activity. There are market and local political forces affecting mining activity that could hurt production.  Second, prices for silver are volatile and tend have been in decline. Third, while there is currently little competition in the silver streaming market, newcomers could easily enter the game and erode market share, because there is significant competition in the silver marketing business.