{"slug":"what-price-a-market-order-fills-at","qid":"subpenny_by_hour","label":"Share of AAPL prints carrying a sub-penny price, by ET hour (Sep 16, 2026)","post_title":"What Price Does a Market Order Fill At?","post_url":"/blog/what-price-a-market-order-fills-at#q-subpenny_by_hour","columns":["et_hour","print_count","subpenny_pct"],"rows":[{"et_hour":"10:00","print_count":117449,"subpenny_pct":53.19},{"et_hour":"11:00","print_count":110938,"subpenny_pct":62.82},{"et_hour":"12:00","print_count":54569,"subpenny_pct":50.3},{"et_hour":"13:00","print_count":40150,"subpenny_pct":32.93},{"et_hour":"14:00","print_count":81758,"subpenny_pct":26.85}],"shape":"ranking","sql":"SELECT\n    formatDateTime(toStartOfHour(toTimeZone(sip_timestamp, 'America/New_York')), '%H:%i') AS et_hour,\n    count()                                                                   AS print_count,\n    round(100 * countIf(toUInt64(round(toFloat64(price) * 10000)) % 100 != 0)\n          / count(), 2)                                                       AS subpenny_pct\nFROM global_markets.stocks_trades\nWHERE ticker = 'AAPL'\n  AND sip_timestamp >= toDateTime('2026-09-16 14:00:00', 'UTC')\n  AND sip_timestamp <  toDateTime('2026-09-16 19:00:00', 'UTC')\n  AND price > 0\n  AND size > 0\nGROUP BY et_hour\nORDER BY et_hour","computed_at":"2026-10-05T14:57:08.505502+00:00","elapsed":0.00375763}