{"slug":"how-to-short-a-stock-step-by-step","qid":"short_mark_tape","label":"Share of AAPL's reported off-exchange volume marked short, August 2026","post_title":"How to Short a Stock, Step by Step","post_url":"/blog/how-to-short-a-stock-step-by-step#q-short_mark_tape","columns":["session_date","session_label","short_marked_pct","reported_volume_millions"],"rows":[{"session_date":"2026-08-03","session_label":"Aug 3","short_marked_pct":45.9,"reported_volume_millions":29.4},{"session_date":"2026-08-04","session_label":"Aug 4","short_marked_pct":47.6,"reported_volume_millions":22.29},{"session_date":"2026-08-05","session_label":"Aug 5","short_marked_pct":52.1,"reported_volume_millions":16.28},{"session_date":"2026-08-07","session_label":"Aug 7","short_marked_pct":41.6,"reported_volume_millions":13.33},{"session_date":"2026-08-10","session_label":"Aug 10","short_marked_pct":42.4,"reported_volume_millions":14.91},{"session_date":"2026-08-11","session_label":"Aug 11","short_marked_pct":35.9,"reported_volume_millions":13.13},{"session_date":"2026-08-13","session_label":"Aug 13","short_marked_pct":35.9,"reported_volume_millions":12.7},{"session_date":"2026-08-14","session_label":"Aug 14","short_marked_pct":32.9,"reported_volume_millions":9.13},{"session_date":"2026-08-17","session_label":"Aug 17","short_marked_pct":37.5,"reported_volume_millions":11.84},{"session_date":"2026-08-19","session_label":"Aug 19","short_marked_pct":39.6,"reported_volume_millions":16.15},{"session_date":"2026-08-20","session_label":"Aug 20","short_marked_pct":39.3,"reported_volume_millions":12.38},{"session_date":"2026-08-21","session_label":"Aug 21","short_marked_pct":50.4,"reported_volume_millions":12.55},{"session_date":"2026-08-25","session_label":"Aug 25","short_marked_pct":58.5,"reported_volume_millions":9.67},{"session_date":"2026-08-26","session_label":"Aug 26","short_marked_pct":51.8,"reported_volume_millions":12.34},{"session_date":"2026-08-27","session_label":"Aug 27","short_marked_pct":56.7,"reported_volume_millions":10.25},{"session_date":"2026-08-31","session_label":"Aug 31","short_marked_pct":51.5,"reported_volume_millions":11.91}],"shape":"series","sql":"SELECT\n    toString(date)                                                              AS session_date,\n    concat(formatDateTime(date, '%b'), ' ', toString(toDayOfMonth(date)))       AS session_label,\n    round(100 * toFloat64(max(short_volume)) / toFloat64(max(total_volume)), 1) AS short_marked_pct,\n    round(toFloat64(max(total_volume)) / 1e6, 2)                                AS reported_volume_millions\nFROM global_markets.stocks_short_volume\nWHERE ticker = 'AAPL'\n  AND date >= '2026-08-01'\n  AND date <  '2026-09-01'\nGROUP BY date\nHAVING max(total_volume) > 0\nORDER BY date","computed_at":"2026-09-14T14:28:39.648019+00:00","elapsed":0.002648474}