Tobacco stocks are rallying the most in a decade following the U.S. Food and Drug Administration’s announcement that it’s cracking down on e-cigarettes in an effort to combat youth vaping. Altria Group and British American Tobacco gained the most intraday since 2008, rising as much as 7.7 percent and 6.9 percent, respectively. Philip Morris rose the most in more than three years. The agency has asked that the five top-selling national e-cigarette brands submit plans on how they will address youth access and use of their products.