closing_print
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 2026-09-23, from krx-after-hours-trading.
| et_time | share_of_session_pct |
|---|---|
| 15:50 | 0.755 |
| 15:51 | 0.561 |
| 15:52 | 0.684 |
| 15:53 | 0.978 |
| 15:54 | 1.469 |
| 15:55 | 1.377 |
| 15:56 | 1.003 |
| 15:57 | 1.312 |
| 15:58 | 1.734 |
| 15:59 | 2.926 |
| 16:00 | 1.088 |
- Rows × columns
- 11 × 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_time |
text | 11 distinct values (15:50, 15:51, 15:52…) | |
share_of_session_pct |
number | 0.561 to 2.926 | 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(toTimeZone(m.window_start, 'America/New_York'), '%H:%i') AS et_time,
round(100 * toFloat64(m.volume) / toFloat64(d.session_volume), 3) AS share_of_session_pct
FROM global_markets.delayed_stocks_minute_aggs AS m
CROSS JOIN
(
SELECT sum(volume) AS session_volume
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'AAPL'
AND window_start >= toDateTime('2026-09-15 04:00:00', 'America/New_York')
AND window_start < toDateTime('2026-09-15 20:00:00', 'America/New_York')
) AS d
WHERE m.ticker = 'AAPL'
AND m.window_start >= toDateTime('2026-09-15 15:50:00', 'America/New_York')
AND m.window_start < toDateTime('2026-09-15 16:01:00', 'America/New_York')
ORDER BY m.window_start
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