Canada's Tilray (NASDAQ: TLRY), a marijuana cultivator and distributor, has given early investors the ride of their lives since going public last June. Last week, for instance, the company's stock peaked at exactly $300 per share, representing a jaw-dropping 856% gain for the brave souls that bought this speculative IPO right off the bat. Even though Tilray's shares have pulled back in a big way since reaching this gravity-defying peak a few days ago, the pot grower's valuation remains wildly disconnected from its near-term growth prospects.