Spotify curates a playlist of the most streamed songs globally and updates it on Fridays to reflect streaming data for the previous week, beginning on the preceding Friday and ending on Thursday. This market will resolve according to the most-streamed song globally on Spotify for the week labeled December 18. If Spotify does not release its top song for the week labeled December 18 by December 19, 2025, 11:59 PM ET, this market will default to "Other". The resolution source for this market will be official information from Spotify. The weekly top songs chart can be found on open.spotify.com under the "Charts" heading.