Summerfest 2026 takes place starting this weekend in Milwaukee over three weekends (June 18–20, June 25–27, and July 2–4).

We used Booking Agent Info’s music industry database to map the agencies behind this year’s lineup and compare it to last year.

WME leads 2026 with 22% of the lineup, up from 14% last year when they ranked second.

Their Summerfest roster includes headliner Carin León, plus Audrey Nuna, Walk Off The Earth, Tucker Wetmore, and more.

THE·TEAM comes in next at 17%. They led last year at 19%. They booked Ed Sheeran, Louis Tomlinson, Alex Warren, and others.

CAA comes in third with 15%, up from 13% last year. Their footprint includes headliners Jelly Roll, Cody Johnson, and Post Malone, alongside other acts across the bill.

UTA follows at 12%, up from 8% last year. Their artists include headliner Don Toliver, plus Ella Mai, Megadeth, and others. One of the stronger year-over-year gains in the dataset.

IAG slips to 4% after coming in at 10% last year. They booked artists like Buju Banton, Jeremih, and Two Feet on the lineup.

Mint Talent Group (3%) with Stephen Marley and Alejandro Escovedo, and others.

Atlas Touring (3%) with flipturn and Penelope Road, and others.

The Neal Agency (3%) with Nate Smith, McCoy Moore, and others.

Dynamic Talent International (2%) with Red Jumpsuit Apparatus, The Ocean Blue, and others.

Cara Lewis Group (2%) with The Roots, Connor Price, and Chase B.

17% of the line-up was booked by a variety of other agencies and artists who handle their bookings in-house.