For much of the past year, and even beyond, marijuana-related stocks have been practically unstoppable, according to The Motley Fool. U.S. legal pot sales are expected to grow by approximately 30% in 2017, and by an estimated 300% between 2016 and 2021 to around $17 billion. Investors clearly want in on this growth, which is why we've seen so many pot stocks rally by 100% or more over the trailing year. What are the two key metrics every investor should consider when buying cannabis-related stocks? **Working capital** and **cash flow**. See The Fool to learn why.

“The Cannabis Industry: Growth Opportunities for Professionals, Operators and Investors" https://t.co/PPbedq6CFc
–– SmokeExchange (@smoke_exchange) September 20, 2017

In the investor community, cannabis is smoking hot https://t.co/BfXSZZBjCR via @thememo
–– The Arcview Group (@ArcviewPress) September 23, 2017

[More from H. Hudson](https://extroverting.com/author/brad/) and [More about Cannabis investing](https://extroverting.com/tag/investing/) on [Extroverting](https://extroverting.com/)