Stocks in the sector are also viewed by some as part of the "sin stock" faction along with tobacco, liquor, gambling and gun stocks, precluding some long-only funds from participating, reducing demand. Aleafia Health (OTC: ALEAF ) tumbled 7% after it launched Monday a research and development division to be called Aleafia Labs to focus on the development of cannabis products that may act as a replacement for addictive prescription opioids and sleeping aids. Tilray (NASDAQ: TLRY ) stock, meanwhile, fell 11%, taking its total losses for month above 40%, but still remains up more than 400% from its July public offering.