The Billboard Hot is the music industry standard record chart in the United States for songs, published weekly by Billboard magazine. Chart rankings are based on sales physical and digital , radio play , and online streaming in the United States. The weekly tracking period for sales was initially Monday to Sunday when Nielsen started tracking sales in , but was changed to Friday to Thursday in July This tracking period also applies to compiling online streaming data. Radio airplay, which, unlike sales figures and streaming, is readily available on a real-time basis, is tracked on a Monday to Sunday cycle previously Wednesday to Tuesday. As of the issue for the week ending on August 8, , the Billboard Hot has had 1, different number one entries. The chart's current number-one song is " Cardigan " by Taylor Swift. Prior to , Billboard ' s lead popularity chart was the Honor Roll of Hits , established in This chart ranked the most popular songs comprised by record and sheet sales, disk jockey, and juke box performances as determined by Billboard ' s weekly nationwide survey.
1. "You Are Not Alone" by Michael Jackson
2. "Fantasy" by Mariah Carey
Top Charts. Greatest of All Time. Breaking and Entering. Songs Of The Summer. Additional Charts. Taylor Swift. Blinding Lights. Greatest Hits. If I Know Me. Frozen II.
Subscriber Account active since. In the history of modern music rankings, only a handful of songs have ever debuted at No. The Hot is widely considered the definitive all-genre singles chart in the US. Although it was officially launched in , Billboard began using modern airplay and sales data in — allowing for more time-sensitive calculations and accurate rankings. Moreover, Billboard began incorporating digital sales data in and YouTube data in