Xtreme One Entertainment, Inc. engages in the live sports and event marketing businesses. The company is involved in the promotion and staging of mixed martial arts (MMA) fights under the Xtreme Fighting Championships name. It also engages in the sale and marketing of branded merchandise of its extreme sports and entertainment properties. The company was formerly known as CannaGrow Holdings, Inc. and changed its name to Xtreme One Entertainment, Inc. in December 2023. Xtreme One Entertainment, Inc. was incorporated in 1995 and is based in Grand Rapids, Michigan.