Billboard is a music and entertainment website, and it is arguably the most famous publisher of music charts in the United States. The website publishes weekly charts for the most popular songs and albums. When a singer proclaims they have No. 1 hits, they typically are referring to Billboard specifically. Every week, music listeners around the world listen to their favorite music and wait to see which artist is at the top of that week’s charts.
The unpredictability of it has contributed to the growing popularity of legally trading on these Billboard markets via the top U.S. prediction market platform, Kalshi.