Recent seismic activity is dominated by aftershocks from the magnitude 7.8 mainshock offshore southern Mindanao, Philippines, on June 8, which has already generated multiple magnitude 5.5+ events, including a confirmed 5.5 aftershock on June 11 and additional shocks up to 6.7. USGS data show global M5.5+ rates typically average 9–12 events per week under background conditions, placing the >9 outcome near the center of the expected distribution and supporting its leading 43% market-implied probability. Aftershock sequences follow Omori’s law with decaying frequency, yet subduction-zone clusters in the Philippines and nearby Celebes Sea region can sustain elevated counts through the June 15–21 window. No comparable large mainshocks have occurred elsewhere in the past week, keeping the probability mass concentrated between roughly 6 and 10 events while leaving room for lower totals if aftershock productivity drops sharply. Traders are therefore weighting the post-event boost against the historical baseline, with upcoming USGS catalog updates likely to provide the next clear signal.