{"slug":"us-credit-downgrade-2011","qid":"path_30m","label":"SPY by half-hour: August 8, 2011 regular session","post_title":"The 2011 US Downgrade: Black Monday's Tape","post_url":"/blog/us-credit-downgrade-2011#q-path_30m","columns":["et_time","bucket_close","bucket_low","shares_m"],"rows":[{"et_time":"09:30","bucket_close":117.56,"bucket_low":116.74,"shares_m":62.5},{"et_time":"10:00","bucket_close":115.79,"bucket_low":115.64,"shares_m":50.4},{"et_time":"10:30","bucket_close":115.81,"bucket_low":115.27,"shares_m":54.5},{"et_time":"11:00","bucket_close":116.4,"bucket_low":115.53,"shares_m":42.5},{"et_time":"11:30","bucket_close":116.31,"bucket_low":115.97,"shares_m":26},{"et_time":"12:00","bucket_close":115.55,"bucket_low":115.45,"shares_m":21.2},{"et_time":"12:30","bucket_close":115.61,"bucket_low":115.39,"shares_m":21.2},{"et_time":"13:00","bucket_close":115.5,"bucket_low":115.02,"shares_m":25.2},{"et_time":"13:30","bucket_close":114.13,"bucket_low":114.08,"shares_m":39.9},{"et_time":"14:00","bucket_close":113.19,"bucket_low":112.02,"shares_m":64.3},{"et_time":"14:30","bucket_close":113.19,"bucket_low":112.9,"shares_m":45.4},{"et_time":"15:00","bucket_close":114.05,"bucket_low":113.12,"shares_m":62.3},{"et_time":"15:30","bucket_close":112.28,"bucket_low":112.25,"shares_m":86.4}],"shape":"series","sql":"SELECT\n    formatDateTime(toStartOfInterval(toTimeZone(window_start, 'America/New_York'), INTERVAL 30 MINUTE), '%H:%i') AS et_time,\n    round(toFloat64(argMax(close, window_start)), 2) AS bucket_close,\n    round(min(toFloat64(low)), 2) AS bucket_low,\n    round(toFloat64(sum(volume)) / 1e6, 1) AS shares_m\nFROM global_markets.delayed_stocks_minute_aggs\nWHERE ticker = 'SPY'\n  AND window_start >= toDateTime('2011-08-08 04:00:00') AND window_start < toDateTime('2011-08-08 23:59:00')\n  AND (toHour(toTimeZone(window_start, 'America/New_York')) * 60 + toMinute(toTimeZone(window_start, 'America/New_York'))) BETWEEN 570 AND 959\nGROUP BY et_time\nORDER BY et_time","computed_at":"2026-07-26T06:19:15.101421+00:00","elapsed":0.042694324}