Jas Hennessy & Co., or more simply Hennessy, is a cognac house with headquarters in Cognac, France. Today, the company of Jas Hennessy & Co. sells about 50 million bottles a year worldwide, or more than 40 percent of the world’s Cognac, making it the world's largest Cognac producer. It is owned by Moët Hennessy, which is co-owned by LVMH (66%) and Diageo (34%).