A company that creates medical-marijuana dispensing machines says its stock is getting way too high. Medbox MDBX -51.22% shares surged 3,000% this week -- from roughly $4 Monday to $215 Thursday -- before falling to $100 after executives sought to dampen investor enthusiasm. In a news release today, the company said that the stock’s rocket launch, which sent its market cap skyrocketing from $45 million at the start of the week to a staggering $2.3 billion, was ignited by a MarketWatch story Tuesday on how to invest in legalized marijuana (see How to invest in legalized marijuana .) (That’s about double the market ... (full story)