Traders assign a 94% implied probability to no megaquake—typically a magnitude 8.0 or greater event on the moment magnitude scale—by June 30 because such quakes remain rare globally, with USGS records showing an average of only one to two per year worldwide and none recently in high-risk subduction zones that would signal imminent activity. Current seismic monitoring reveals no significant foreshocks, ground deformation, or other precursors that would elevate short-term odds. While sudden rupture along major faults like the Cascadia or Japan Trench remains theoretically possible, historical patterns and ongoing USGS data streams indicate low likelihood within the narrow remaining window, though an unexpected large event in an active region could still shift sentiment.