Marijuana IndustryThe Top 10 Marijuana Penny Stocks to Watch in October 2017 Include a 200% Gainer September 28, 2017 by Alex McGuire The top marijuana penny stocks to watch in October 2017 include September's biggest gainers. One of these stocks has rallied 200%, meaning it's tripled in value so far this month. Here's the complete list of top 10 marijuana penny stocks...