The group vaults 75-40 with its single co-written by Meghan Trainor. Meanwhile, Trainor and Taylor Swift chart four titles apiece.
As previously reported, Taylor Swift's "Blank Space" leads the Billboard Hot 100 for a seventh week, marking the record-tying 19th straight week that women have kept men out of the chart's top spot.
Who else soars on the Hot 100 this week? (Even some men do!)
James Newton Howard, "The Hanging Tree," featuring Jennifer Lawrence
After a two-week break, the collab, from The Hunger Games: Mockingjay, Part I, in which Lawrence stars, returns to the Hot 100's top 20 (21-16), nearing its No. 12 high set upon its debut four weeks ago. As 98 of the Hot 100's titles sport sales gains this week, thanks to online Christmas-week shopping, "Tree" grows by 106 percent to 170,000 sold in the week ending Dec. 28, according to Nielsen Music. On Radio Songs, it surges 36-29 with 38 million in all-format audience (up 13 percent).