{"slug":"microstructure-2026-06-29","qid":"quote_tape_total","label":"The whole NBBO stream in one row: QQQ and NVDA pinned by name","post_title":"Microstructure Deep-Dive: June 29, 2026","post_url":"/blog/microstructure-2026-06-29#q-quote_tape_total","columns":["updates_m","qqq_updates_m","nvda_updates_m","qqq_minus_nvda_updates_m","nvda_minus_next_single_m"],"rows":[{"updates_m":505.38,"qqq_updates_m":5.23,"nvda_updates_m":1.8,"qqq_minus_nvda_updates_m":3.43,"nvda_minus_next_single_m":0.67}],"shape":"scalar","sql":"WITH\n    (\n        SELECT (round(countIf(ticker = 'QQQ') / 1e6, 2), round(countIf(ticker = 'NVDA') / 1e6, 2),\n                round(countIf(ticker = 'AAPL') / 1e6, 2), round(countIf(ticker = 'TSLA') / 1e6, 2))\n        FROM global_markets.cache_stocks_quotes\n        WHERE ticker IN ('QQQ', 'NVDA', 'AAPL', 'TSLA')\n          AND sip_timestamp >= '2026-06-29 00:00:00' AND sip_timestamp < '2026-06-30 00:00:00'\n    ) AS pinned\nSELECT\n    round(count() / 1e6, 2) AS updates_m,\n    pinned.1 AS qqq_updates_m,\n    pinned.2 AS nvda_updates_m,\n    round(pinned.1 - pinned.2, 2) AS qqq_minus_nvda_updates_m,\n    round(pinned.2 - greatest(pinned.3, pinned.4), 2) AS nvda_minus_next_single_m\nFROM global_markets.cache_stocks_quotes\nWHERE sip_timestamp >= '2026-06-29 00:00:00' AND sip_timestamp < '2026-06-30 00:00:00'","computed_at":"2026-07-26T06:08:52.546013+00:00","elapsed":5.727716192}