Pot-Stock Frenzy Stokes Canopy Growth Shares, Options Volume

How Pot Can Save Big Tobacco's Future
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Investors are looking downright giddy for Canopy Growth Corp.

The shares have rallied more than 114 percent since Constellation Brands Inc., the maker of Corona beer, said it will buy a 30 percent stake in the medical-marijuana producer for $4.7 billion on Aug. 15Bloomberg Terminal. Average daily volume has skyrocketed to more than 20 million shares, up from an average of 2.6 million shares in the one month prior.