Swift logs a record-extending 18th week at No. 1, while Clarkson rockets 48-5 thanks to the debut of her album "Piece by Piece."

Taylor Swift holds atop the Billboard Artist 100 chart, tallying a record-extending 18th week at the summit. Meanwhile, Kelly Clarkson bounds 48-5 as her album Piece by Piece debuts at No. 1 on the Billboard 200 and Top Album Sales charts.

Kelly Clarkson Claims Her Third No. 1 Album on Billboard 200 Chart

The Artist 100 is the first weekly survey dedicated to measuring artist activity across Billboard's most influential charts, including the Billboard Hot 100 songs chart, Top Album Sales and the Social 50. The Artist 100 blends data measuring album and track sales, radio airplay, streaming and social media fan interaction to provide a weekly multi-dimensional ranking of artist popularity.

Swift tops the Artist 100 with a 1 percent gain in overall activity, according to Nielsen Music. Drake rebounds 4-2, followed by Ed Sheeran (3-3) and Maroon 5 (6-4).

Rounding out the Artist 100's top five, Clarkson (up 305 percent) rides the debut of her new album to a 43-spot blast on the chart (where she'd previously ranked as high as No. 45). As Piece by Piece starts atop the Billboard 200 (97,000 units) and Top Album Sales (83,000 copies sold), traditional album sales account for 72 percent of her Artist 100 standing.

In other Artist 100 highlights, Ellie Goulding continues her rise, again lifting to a new peak (10-7) powered by two hit singles. Nearly half of her overall activity is from digital song sales, as "Love Me Like You Do," from the Fifty Shades of Grey soundtrack, stays at No. 4 on Digital Songs (155,000 downloads sold, down 8 percent) and Calvin Harris' "Outside," on which she's featured, lifts 41-37 (35,000, up 10 percent).

Radio airplay marks the next greatest slice of Goulding's Artist 100 points (24 percent), as "Love" jumps 12-7 on Radio Songs (77 million all-format audience impressions, up 22 percent) and "Outside" climbs 22-17 (49 million, up 6 percent).

Carly Rae Jepsen's 'I Really Like You' Video: Tom Hanks & Justin Bieber Call Her Maybe

Meanwhile, another pop diva, Carly Rae Jepsen, makes her Artist 100 debut at No. 69. Digital song sales (38,000) and streaming (3.9 million U.S. streams) for her new single "I Really Like You" lead the way; the song enters the Hot 100 at No. 48.