One of the world's biggest tobacco companies is diving into the cannabis market with a $2.4 billion investment in Cronos Group, a Canadian medical and recreational marijuana company.
Altria, the parent company of Philip Morris USA, which makes Marlboro cigarettes, is taking a 45 percent stake in the Toronto company. The move will help it tap into a customer base outside cigarette smokers, as cigarette smoking declines in the U.S.