**Current USGS monitoring shows a magnitude 5.3 event in New Zealand as the largest quake recorded so far on October 15, aligning with the market's leading 5.3–5.4 outcome.** Shallow-to-moderate activity elsewhere, including a 5.1 near Samoa and scattered M4+ events in Japan and Alaska, has not exceeded this threshold. Deep-focus quakes like the New Zealand event are common in subduction zones but rarely intensify significantly after initial detection. With resolution depending on the single highest magnitude reported globally by official catalogs before the day ends, traders appear to weigh the low likelihood of a late-day M5.5+ or greater against typical daily global seismicity patterns, where M6+ events remain infrequent outside aftershock sequences or active regions.