{"slug":"how-to-read-the-equity-trade-tape","qid":"cutover","label":"The first session with a populated participant timestamp","post_title":"How to Read the US Equity Trade Tape","post_url":"/blog/how-to-read-the-equity-trade-tape#q-cutover","columns":["first_populated_session","populated_prints"],"rows":[{"first_populated_session":"2015-07-27","populated_prints":6410324}],"shape":"scalar","sql":"SELECT\n    toString(min(toDate(sip_timestamp)))    AS first_populated_session,\n    count()                                 AS populated_prints\nFROM global_markets.stocks_trades\nWHERE ticker IN ('IBM', 'MSFT', 'AAPL', 'GE', 'XOM')\n  AND sip_timestamp >= '2015-07-20' AND sip_timestamp < '2015-08-08'\n  AND toUnixTimestamp64Nano(participant_timestamp) != 0","computed_at":"2026-09-15T01:15:13.575344+00:00","elapsed":0.001584755}