If Charli xcx has a top 20 single on the Billboard Hot 100 by the Billboard issue for Dec 26, 2026, then the market resolves to Yes. **This market and these products have not been endorsed by Billboard. Any references to "Billboard", the "Hot 100," or any other associated marks are descriptive only, and do not indicate an endorsement of this product or any affiliation between Billboard and Kalshi.** If this event occurs, the market will close the following 10:00 AM ET.