The Marijuana ETF was up more than 9% on Tuesday on a strong 5 million shares traded. The fund, which was at around $5 million in assets just a week ago when it was wrapping up as the Latin American Real Estate ETF, is already up to $45 million.Is this a peek at what the rest of 2018 could look like? Cannabis stocks are the hot thing right now, and it, honestly, wouldn't surprise me if this ETF hits $50 at some point this year. In a WhoTrades poll I ran last week, 84% of responders said they would be a buyer of a marijuana ETF in 2018.Do you think the Marijuana ETF is in for a big year? Comment down below!