Warner Bros. Entertainment Inc. (commonly known as Warner Bros. and abbreviated as W.B; formerly traded as Warner Bros. Inc.) is an American diversified multinational mass media and entertainment conglomerate headquartered at the Warner Bros. Studios complex in Burbank, California, and a subsidiary of AT&T's WarnerMedia through its Studios and Networks Group division. Founded in 1923 by brothers Harry, Albert, Sam and Jack Warner, the company established itself as a leader in the American film industry before diversifying into animation, television, and video games, and is one of the "Big Five" major American film studios, as well as a member of the Motion Picture Association (M.P.A). They also own the rights to DC Comics.