Pot-Machine Maker: Dudes, Stop Buying Our Stock Medbox shares soar 3,000% after story By John Johnson, Newser Staff Posted Nov 16, 2012 3:50 PM CST 13 comments Comments A marijuana grower shows off his plants. (AP Photo/Matilde Campodonico) (Newser) – Need more evidence that marijuana is going mainstream? A company that makes pot-dispensing machines had to put out a news release today asking investors to chill, reports MarketWatch. Shares of Medbox were selling at $4 on Monday but jumped to $215 yesterday—a staggering 3,000% increase—because the company got a favorable mention in a previous MarketWatch story headlined "How to invest in legalized marijuana." The tactic worked, at least a little. Shares were recently hovering around $100. “We believe an appropriate trading range is between $5 and $10 but, alas, the market will do what it will do,” says company founder Vincent Mehdizadeh.