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 2026-10-08, from qqq-etf-price-in-krw.
| et_clock | kst_clock | volume_m |
|---|---|---|
| 15:00 | 04:00 | 138.9 |
| 10:00 | 23:00 | 102.5 |
| 09:00 | 22:00 | 92 |
| 11:00 | 00:00 | 80.5 |
| 14:00 | 03:00 | 64.9 |
| 12:00 | 01:00 | 61.1 |
| 13:00 | 02:00 | 54.4 |
| 16:00 | 05:00 | 46.7 |
| 08:00 | 21:00 | 13.6 |
| 04:00 | 17:00 | 8.7 |
| 07:00 | 20:00 | 8.1 |
| 03:00 | 16:00 | 3.9 |
| 02:00 | 15:00 | 3.9 |
| 06:00 | 19:00 | 2.7 |
| 17:00 | 06:00 | 2.5 |
| 05:00 | 18:00 | 2.2 |
| 18:00 | 07:00 | 2.1 |
| 19:00 | 08:00 | 1.5 |
| 00:00 | 13:00 | 0.4 |
| 21:00 | 10:00 | 0.3 |
| 01:00 | 14:00 | 0.3 |
| 23:00 | 12:00 | 0.3 |
| 22:00 | 11:00 | 0.1 |
- Rows × columns
- 23 × 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_clock |
text | 23 distinct values (00:00, 01:00, 02:00…) | |
kst_clock |
text | 23 distinct values (00:00, 01:00, 02:00…) | |
volume_m |
number | 0.1 to 138.9 | 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(toTimeZone(window_start, 'America/New_York'), '%H:00') AS et_clock,
formatDateTime(toTimeZone(window_start, 'Asia/Seoul'), '%H:00') AS kst_clock,
round(toFloat64(sum(volume)) / 1e6, 1) AS volume_m
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'QQQ'
AND window_start >= today() - 30
GROUP BY et_clock, kst_clock
HAVING sum(volume) > 0
ORDER BY volume_m DESC
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