{"slug":"when-did-the-us-stock-market-start","qid":"busiest_minute","label":"The single busiest clock minute of the month, October 2024","post_title":"When Did the US Stock Market Start? 1792","post_url":"/blog/when-did-the-us-stock-market-start#q-busiest_minute","columns":["symbol","busiest_clock_et","busiest_minute_pct"],"rows":[{"symbol":"KO","busiest_clock_et":"15:59","busiest_minute_pct":4.18},{"symbol":"JNJ","busiest_clock_et":"15:59","busiest_minute_pct":4.12},{"symbol":"MSFT","busiest_clock_et":"09:30","busiest_minute_pct":3.99},{"symbol":"SPY","busiest_clock_et":"15:59","busiest_minute_pct":3.79},{"symbol":"AAPL","busiest_clock_et":"09:30","busiest_minute_pct":3.72}],"shape":"ranking","sql":"SELECT\n    symbol,\n    argMax(clock_et, minute_volume)                          AS busiest_clock_et,\n    round(100 * max(minute_volume) / sum(minute_volume), 2)  AS busiest_minute_pct\nFROM\n(\n    SELECT\n        ticker                                                                 AS symbol,\n        formatDateTime(toTimeZone(window_start, 'America/New_York'), '%H:%i')  AS clock_et,\n        toFloat64(sum(volume))                                                 AS minute_volume\n    FROM global_markets.delayed_stocks_minute_aggs\n    WHERE ticker IN ('SPY', 'AAPL', 'MSFT', 'KO', 'JNJ')\n      AND window_start >= '2024-10-01'\n      AND window_start <  '2024-11-01'\n    GROUP BY symbol, clock_et\n)\nGROUP BY symbol\nORDER BY busiest_minute_pct DESC","computed_at":"2026-08-08T15:40:30.731216+00:00","elapsed":0.008068336}