The Chainsmokers have scored a sixth week at the top of the U.S. pop charts. The duo's Closer hit, featuring Halsey, keeps Heathens by Twenty One Pilots stuck at two, while Major Lazer and Justin Bieber's Cold Water is also a non-mover at three on the Billboard Hot 100. DJ Snake's Let Me Love You, also featuring Bieber, and Sia's Cheap Thrills round out the new top five.