{"slug":"split-adjusting-dividend-history","qid":"price_convention","label":"Apple daily closes around the 2020 split, each against the prior session","post_title":"Split-Adjusting Your Dividend History","post_url":"/blog/split-adjusting-dividend-history#q-price_convention","columns":["date","close_stored","prior_session_ratio"],"rows":[{"date":"2020-08-17","close_stored":114.61,"prior_session_ratio":0},{"date":"2020-08-18","close_stored":115.56,"prior_session_ratio":1.008},{"date":"2020-08-19","close_stored":115.71,"prior_session_ratio":1.001},{"date":"2020-08-20","close_stored":118.28,"prior_session_ratio":1.022},{"date":"2020-08-21","close_stored":124.37,"prior_session_ratio":1.052},{"date":"2020-08-24","close_stored":125.86,"prior_session_ratio":1.012},{"date":"2020-08-25","close_stored":124.82,"prior_session_ratio":0.992},{"date":"2020-08-26","close_stored":126.52,"prior_session_ratio":1.014},{"date":"2020-08-27","close_stored":125.01,"prior_session_ratio":0.988},{"date":"2020-08-28","close_stored":124.81,"prior_session_ratio":0.998},{"date":"2020-08-31","close_stored":129.04,"prior_session_ratio":1.034},{"date":"2020-09-01","close_stored":134.18,"prior_session_ratio":1.04},{"date":"2020-09-02","close_stored":131.4,"prior_session_ratio":0.979},{"date":"2020-09-03","close_stored":120.88,"prior_session_ratio":0.92},{"date":"2020-09-04","close_stored":120.96,"prior_session_ratio":1.001}],"shape":"series","sql":"SELECT\n    toString(date)                                     AS date,\n    round(close, 2)                                    AS close_stored,\n    if(prev_close > 0, round(close / prev_close, 3), 0) AS prior_session_ratio\nFROM\n(\n    SELECT\n        date,\n        toFloat64(close)                                  AS close,\n        lagInFrame(toFloat64(close)) OVER (ORDER BY date) AS prev_close\n    FROM global_markets.stocks_daily_aggs\n    WHERE ticker = 'AAPL'\n      AND date >= '2020-08-17'\n      AND date <  '2020-09-05'\n)\nORDER BY date","computed_at":"2026-10-09T15:25:52.788512+00:00","elapsed":0.00232881}