Karol G’s “BbY WOW” with Judeline and rusowsky commands overwhelming market-implied odds as the frontrunner for the September 18 Spotify Global chart because it posted 42.4 million streams in the most recent tracking week, more than double the nearest competitor. The track’s surge stems from its August 7 album release on No Me Arrepiento de Sentir Tanto, strong Latin-market dominance, and recent Billboard Global 200 leadership, creating sustained streaming momentum that outpaces older catalog tracks and newer releases. Traders see limited room for an upset given the gap and typical weekly chart inertia, though any sharp drop in daily plays or a surprise viral competitor could narrow the lead before the period closes.