{"slug":"primary-peg-and-market-peg-orders","qid":"spread_clock","label":"AAPL quoted spread by ET hour, 15 September 2026","post_title":"Primary Peg vs Market Peg Orders Explained","post_url":"/blog/primary-peg-and-market-peg-orders#q-spread_clock","columns":["et_time","spread_cents"],"rows":[{"et_time":"04:00","spread_cents":24.53},{"et_time":"05:00","spread_cents":19.62},{"et_time":"06:00","spread_cents":23.8},{"et_time":"07:00","spread_cents":17.83},{"et_time":"08:00","spread_cents":17.41},{"et_time":"09:00","spread_cents":6.7},{"et_time":"10:00","spread_cents":4.02},{"et_time":"11:00","spread_cents":3.23},{"et_time":"12:00","spread_cents":2.68},{"et_time":"13:00","spread_cents":2.29},{"et_time":"14:00","spread_cents":2.03},{"et_time":"15:00","spread_cents":2.15},{"et_time":"16:00","spread_cents":14.8},{"et_time":"17:00","spread_cents":10.75},{"et_time":"18:00","spread_cents":12.85},{"et_time":"19:00","spread_cents":10.32}],"shape":"series","sql":"SELECT\n    formatDateTime(toStartOfHour(toTimeZone(sip_timestamp, 'America/New_York')), '%H:%i') AS et_time,\n    round(avg(toFloat64(ask_price) - toFloat64(bid_price)) * 100, 2) AS spread_cents\nFROM global_markets.cache_stocks_quotes\nWHERE ticker = 'AAPL'\n  AND sip_timestamp >= '2026-09-15 08:00:00'\n  AND sip_timestamp <  '2026-09-16 00:00:00'\n  AND bid_price > 0\n  AND ask_price > bid_price\nGROUP BY et_time\nORDER BY et_time","computed_at":"2026-10-08T15:29:23.318702+00:00","elapsed":0.003580938}