Cannabis producers have been awful investments. But there's reason to believe it can get better.

The “green rush” in cannabis stocks has turned to a crushing disappointment, with the largest plays down more than 90%.

Canopy Growth has collapsed below $1 — and yet it does seem like, somehow, the company should be able to salvage some value. $CGC

Tilray looks like a winner if the Canadian industry finally becomes rational, but that day may never arrive. $TLRY

Cronos is seeing takeover interest, but a deal seems unlikely. Should CRON plunge, deep value investors should take a good look. $CRON