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Where SPY volume prints today, by ET clock hour (trailing month)

Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-09-14, from US Stocks 23/5 Trading: The December 2026 Plan.

as of ranking 16×4read in context →
Where SPY volume prints today, by ET clock hour (trailing month) — 16 rows by 4 columns, computed from US exchange, SIP and OPRA data.
et_hourvolume_millionsshare_pctminute_bars
04:001.90.27907
05:000.60.08816
06:000.80.12831
07:003.40.491079
08:008.81.281131
09:0076.611.21139
10:0091.113.311140
11:0074.410.871140
12:0055.98.161140
13:00507.31140
14:0062.79.161140
15:00173.825.391140
16:0075.511.041118
17:006.80.99858
18:001.70.24846
19:000.70.1782
Rows × columns
16 × 4
Computed
Completeness
No missing values
Source
US exchange, SIP and OPRA market data
Licence
Strasmore terms · free, no signup
Formats
JSON · CSV · the SQL below

What each column holds

Column definitions for Where SPY volume prints today, by ET clock hour (trailing month), derived from the stored result.
ColumnTypeRangeNotes
et_hour text 16 distinct values (04:00, 05:00, 06:00…)
volume_millions number 0.6 to 173.8 count
share_pct number 0.08 to 25.39 percent
minute_bars number 782 to 1,140

Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.

the exact SQL behind every number
WITH
(
    SELECT sum(volume)
    FROM global_markets.delayed_stocks_minute_aggs
    WHERE ticker = 'SPY'
      AND window_start >= today() - 30
      AND window_start <  today() - 2
) AS month_volume
SELECT
    formatDateTime(toTimeZone(window_start, 'America/New_York'), '%H:00') AS et_hour,
    round(toFloat64(sum(volume)) / 1e6, 1)                               AS volume_millions,
    round(100 * toFloat64(sum(volume)) / toFloat64(month_volume), 2)     AS share_pct,
    count()                                                              AS minute_bars
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'SPY'
  AND window_start >= today() - 30
  AND window_start <  today() - 2
GROUP BY et_hour
HAVING count() >= 5
ORDER BY et_hour

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