**The closely contested 53% implied probability for a new Banksy mural or street artwork by December 31 stems from the artist’s irregular output and the roughly four-and-a-half-month window remaining.** Recent activity shows a September 2025 mural at London’s Royal Courts of Justice (quickly covered), December 2025 Christmas-themed pieces of children gazing skyward confirmed on Instagram, and an April/May 2026 statue in Waterloo Place depicting a flag-blinded figure, also authenticated by the artist. No verified public works have appeared since. The March 2026 Reuters investigation identifying Banksy as Robin Gunningham (also known as David Jones) introduced fresh uncertainty, as heightened scrutiny could influence his preference for anonymous street interventions. Historical patterns reveal sporadic bursts tied to current events or holidays rather than a steady cadence, with no announced projects, precursor signals, or credible leaks pointing to imminent new pieces. Traders appear to weigh the possibility of another opportunistic intervention—common in London or politically charged locations—against the risk of another quiet stretch. A fresh Instagram confirmation, sudden appearance verified through official channels, or major news event could quickly shift sentiment toward “Yes,” while continued silence through fall would likely reinforce the balanced odds.