us_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 2026-09-30, from how-to-invest-in-the-dax.
| et_time | volume_millions | share_of_day_pct |
|---|---|---|
| 02:00 | 0 | 0 |
| 02:30 | 0.09 | 0.1 |
| 03:00 | 0.04 | 0 |
| 03:30 | 0.07 | 0.1 |
| 04:00 | 0.03 | 0 |
| 04:30 | 0.04 | 0.1 |
| 05:00 | 0.03 | 0 |
| 05:30 | 0.01 | 0 |
| 06:00 | 0.01 | 0 |
| 06:30 | 0 | 0 |
| 07:00 | 0.02 | 0 |
| 07:30 | 0 | 0 |
| 08:00 | 0 | 0 |
| 08:30 | 0.01 | 0 |
| 09:00 | 0.01 | 0 |
| 09:30 | 12.62 | 15.8 |
| 10:00 | 5.45 | 6.8 |
| 10:30 | 5.68 | 7.1 |
| 11:00 | 5.87 | 7.3 |
| 11:30 | 7.62 | 9.5 |
| 12:00 | 4.71 | 5.9 |
| 12:30 | 4.05 | 5.1 |
| 13:00 | 3.23 | 4 |
| 13:30 | 3.13 | 3.9 |
| 14:00 | 2.92 | 3.7 |
| 14:30 | 3.23 | 4 |
| 15:00 | 7.14 | 8.9 |
| 15:30 | 10.49 | 13.1 |
| 16:00 | 0.41 | 0.5 |
| 16:30 | 3.01 | 3.8 |
| 17:00 | 0 | 0 |
| 17:30 | 0 | 0 |
| 18:00 | 0 | 0 |
| 18:30 | 0 | 0 |
| 19:00 | 0 | 0 |
| 19:30 | 0 | 0 |
- Rows × columns
- 36 × 3
- 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_time |
text | 36 distinct values (02:00, 02:30, 03:00…) | |
volume_millions |
number | 0 to 12.62 | count |
share_of_day_pct |
number | 0 to 15.8 | percent |
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(
toStartOfInterval(toTimeZone(window_start, 'America/New_York'), INTERVAL 30 MINUTE),
'%H:%i') AS et_time,
round(sum(volume) / 1e6, 2) AS volume_millions,
round(100 * sum(volume) /
(
SELECT sum(volume)
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'EWG'
AND window_start >= today() - 120
), 1) AS share_of_day_pct
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'EWG'
AND window_start >= today() - 120
GROUP BY et_time
ORDER BY et_time
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