{"slug":"what-is-stock-beta","qid":"window_coverage","label":"window_coverage","post_title":"what-is-stock-beta","post_url":"/blog/lang/tl/what-is-stock-beta#q-window_coverage","columns":["ticker","return_obs"],"rows":[{"ticker":"AAPL","return_obs":751},{"ticker":"JNJ","return_obs":751},{"ticker":"KO","return_obs":751},{"ticker":"MSFT","return_obs":751},{"ticker":"NVDA","return_obs":751},{"ticker":"SPY","return_obs":751},{"ticker":"TSLA","return_obs":751}],"shape":"ranking","sql":"SELECT\n    ticker,\n    count() AS return_obs\nFROM\n(\n    SELECT\n        ticker,\n        date,\n        lagInFrame(toFloat64(close)) OVER (PARTITION BY ticker ORDER BY date ROWS BETWEEN 1 PRECEDING AND 1 PRECEDING) AS prev_px\n    FROM global_markets.stocks_daily_aggs\n    WHERE ticker IN ('SPY', 'AAPL', 'MSFT', 'NVDA', 'TSLA', 'KO', 'JNJ')\n      AND date >= '2023-10-01'\n      AND date <= '2026-09-30'\n)\nWHERE prev_px > 0\nGROUP BY ticker\nORDER BY ticker","computed_at":"2026-10-16T15:32:32.369524+00:00","elapsed":0.00281966}