Marijuana Stocks Slump As Canadian Court Nixes Restrictions

Canadian medical marijuana producers plunged after a federal court threw out a series of regulations that restrict the private growth and consumption of the substance.

Canopy Growth Corp., based in Smiths Falls, Ontario, plunged as much as 12 percent and was down 8.7 percent to C$2.88 at 1:50 p.m. in Toronto, the most in seven weeks and erasing gains for the year. Smaller producer Aphria Inc. sank as much as 13 percent, the most since November.