**The primary driver behind the 91.5% market-implied odds on Yes is the well-documented April 2026 engagement confirmation.** Multiple outlets reported that Zoë Kravitz was spotted wearing a large diamond ring on her left ring finger during public outings with Harry Styles in London, prompting sources close to the couple to confirm to People and Page Six that he had proposed after roughly eight months of dating that began in August 2025. Subsequent June 2026 sightings, including a romantic picnic in Hampstead Heath, showed the pair still together and discussing wedding plans, reinforcing trader confidence that the engagement status is already established well ahead of the August 31 cutoff. While the high probability reflects this sustained insider consensus and public evidence, realistic challenges could include an unverified breakup announcement or the couple issuing a direct denial before month-end, though no such developments have surfaced in recent months.