These are heady times for supporters of legalized marijuana as well as those looking to cash in on pot’s growing national acceptance. This month, voters in Washington state and Colorado agreed to legalize the recreational use of marijuana for adults. And medical marijuana is currently legal in 18 states and Washington D.C.

Of course, marijuana remains illegal by federal law. But people involved in what some are calling the “green rush” are still looking at business and investment opportunities in cannabis and its production.

And as with nearly all markets, some people are willing to take the risk.

“If the new marijuana laws in Colorado and Washington… are a sign of things to come, if you’re a firm that can benefit by this industry being created into a legal and viable industry, then if you can get in early enough, then those stocks may go up in value,” says Mac Clouse, professor of finance at the University of Denver’s Daniels College of Business.