STAG Industrial (STAG) is a REIT that pays a big monthly dividend (5.0%), and it's been delivering outstanding price returns, but it's also riskier than many investors realize. This article provides an overview of STAG's strategy, details on the three main factors that drive its price performance, an explanation of why it has performed well in its relatively short life, a review of some big risks, and finally our views on how to "play" an investment in STAG.