Sam Smith leads the new Billboard Artist 100 chart for a second week, fending off Iggy Azalea at No. 2 and new Billboard 200 leader Weird Al Yankovic at No. 3.
The list, which launched two weeks ago, provides the first-ever weekly ranking dedicated to measuring artist activity across Billboard’s most influential charts, including the Billboard Hot 100, Billboard 200 and Social 50, among others. The Artist 100 is modeled after the formula utilized to compile Billboard’s annual Year in Music Top Artist list (as well as the Billboard Music Awards Artist of the Year category), blending information from album and track sales, radio airplay, streaming and social media fan interaction to provide a weekly multi-dimensional ranking of artist popularity.