Traders assign a 90.5% implied probability against a megaquake by June 30 because global seismic records show magnitude 8.0+ events remain rare, averaging fewer than two per year worldwide, with USGS monitoring networks detecting no elevated foreshock activity or strain accumulation in major subduction zones. Current data from official seismic stations indicate background levels of activity consistent with long-term baselines, offering no indicators of imminent large rupture. While an unexpected event along high-risk faults cannot be ruled out given inherent uncertainties in earthquake forecasting, the short remaining timeframe and absence of precursors reinforce the strong market consensus favoring no such quake.