Warner Bros. Television (WBTV) is an American television production arm of Warner Bros. Entertainment, itself part of WarnerMedia. Alongside CBS Television Studios, it serves as a television production arm of The CW (in which WarnerMedia has a 50% ownership stake), though it also produces shows for other networks, such as Shameless on Showtime and Westworld on HBO (though WarnerMedia also owns HBO). As of 2015, it is one of the world's two largest television production companies measured by revenue and library (along with Sony Pictures Television).