**BbY WOW by KAROL G with Judeline and rusowsky leads trader sentiment at 72.2% implied probability for the #1 Spotify song around September 4, 2026, driven by its explosive recent chart performance.** The track, from Karol G’s August 2026 album *No Me Arrepiento de Sentir Tanto*, surged from outside the Global Top 100 to daily #1 on Spotify by August 28 with over 3.6 million streams, narrowly topping Justin Bieber and Nicki Minaj’s “Beauty and a Beat.” It posted new peaks across Latin markets (including #1 in Colombia, Peru, and others) and strong U.S. gains, fueled by the album’s #1 debut on Billboard’s Top Latin Albums and the song’s own #1 on Hot Latin Songs. Catalog tracks like Malcolm Todd’s “Earrings,” Tame Impala’s “Loser,” Shakira’s “Dai Dai,” BTS’s “SWIM,” and older hits from Katy Perry or Bieber sit at far lower odds (under 5%) because they lack comparable current momentum or promotional lift. Other unnamed contenders at 50% reflect uncertainty around potential late-week surges or new releases, but BbY WOW’s sustained streaming trajectory and regional dominance make it the clear market favorite heading into early September.