session_clock
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 2026-10-07, from what-is-a-stockbroker.
| et_hour | shares_traded_millions |
|---|---|
| 00:00 | 0.2 |
| 01:00 | 0.4 |
| 02:00 | 7 |
| 03:00 | 3.2 |
| 04:00 | 4.8 |
| 05:00 | 0.9 |
| 06:00 | 1.5 |
| 07:00 | 5.1 |
| 08:00 | 8.8 |
| 09:00 | 162.2 |
| 10:00 | 157 |
| 11:00 | 120.8 |
| 12:00 | 88.6 |
| 13:00 | 81.7 |
| 14:00 | 92.5 |
| 15:00 | 172.7 |
| 16:00 | 40.7 |
| 17:00 | 2.7 |
| 18:00 | 1 |
| 19:00 | 0.9 |
| 21:00 | 0 |
| 22:00 | 0 |
| 23:00 | 0 |
- Rows × columns
- 23 × 2
- Computed
- Completeness
- No missing values
- Source
- US exchange, SIP and OPRA market data
- Licence
- Strasmore terms · free, no signup
What each column holds
| Column | Type | Range | Notes |
|---|---|---|---|
et_hour |
text | 23 distinct values (00:00, 01:00, 02:00…) | |
shares_traded_millions |
number | 0 to 172.7 | count |
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.
Run it yourself
This is the exact query behind the result above. Change a ticker, a date or a column and run it against the warehouse — no account, no key. The no-signup tier is smaller than the one this page was computed on; a query that reaches past it comes back saying which plan runs it.
SELECT
formatDateTime(toStartOfHour(toTimeZone(window_start, 'America/New_York')), '%H:00') AS et_hour,
round(toFloat64(sum(volume)) / 1e6, 1) AS shares_traded_millions
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'AAPL'
AND window_start >= today() - 45
GROUP BY et_hour
ORDER BY et_hour
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