AAPL: opening-minute and closing-cross share of regular-session volume, by session
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 2026-09-28, from Nasdaq Opening Cross Explained: 4 a.m. to 9:30.
| session | opening_minute_pct | closing_cross_pct | session_label |
|---|---|---|---|
| 2026-08-03 | 2.24 | 14.13 | August 3 |
| 2026-08-04 | 1.95 | 22.96 | August 4 |
| 2026-08-05 | 2.33 | 15.81 | August 5 |
| 2026-08-06 | 2.45 | 16.78 | August 6 |
| 2026-08-07 | 2.76 | 21.1 | August 7 |
| 2026-08-10 | 3.81 | 16.01 | August 10 |
| 2026-08-11 | 2.34 | 18 | August 11 |
| 2026-08-12 | 1.73 | 14.53 | August 12 |
| 2026-08-13 | 3.19 | 19.14 | August 13 |
| 2026-08-14 | 1.98 | 23.22 | August 14 |
| 2026-08-17 | 2.33 | 19.23 | August 17 |
| 2026-08-18 | 1.9 | 17.45 | August 18 |
| 2026-08-19 | 1.86 | 14.34 | August 19 |
| 2026-08-20 | 1.83 | 21.36 | August 20 |
| 2026-08-21 | 10.51 | 11.77 | August 21 |
| 2026-08-24 | 2.77 | 16.72 | August 24 |
| 2026-08-25 | 2.92 | 19.37 | August 25 |
| 2026-08-26 | 1.92 | 19.92 | August 26 |
| 2026-08-27 | 2.59 | 24.22 | August 27 |
| 2026-08-28 | 1.69 | 18.77 | August 28 |
| 2026-08-31 | 2.03 | 26.7 | August 31 |
- Rows × columns
- 21 × 4
- Period covered
- to
- 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 |
|---|---|---|---|
session |
date | 2026-08-03 to 2026-08-31 | |
opening_minute_pct |
number | 1.69 to 10.51 | percent |
closing_cross_pct |
number | 11.77 to 26.7 | percent |
session_label |
text | 21 distinct values (August 10, August 11, August 12…) |
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
toString(b.d) AS session,
round(100 * b.open_minute / (b.continuous_shares + p.closing_print), 2) AS opening_minute_pct,
round(100 * p.closing_print / (b.continuous_shares + p.closing_print), 2) AS closing_cross_pct,
concat(monthName(b.d), ' ', toString(toDayOfMonth(b.d))) AS session_label
FROM
(
SELECT
d,
sumIf(v, et_min = 570) AS open_minute,
sum(v) AS continuous_shares
FROM
(
SELECT
toDate(toTimeZone(window_start, 'America/New_York')) AS d,
toHour(toTimeZone(window_start, 'America/New_York')) * 60
+ toMinute(toTimeZone(window_start, 'America/New_York')) AS et_min,
toFloat64(volume) AS v
FROM global_markets.delayed_stocks_minute_aggs
WHERE ticker = 'AAPL'
AND window_start >= '2026-08-03 04:00:00'
AND window_start < '2026-09-01 04:00:00'
)
WHERE et_min BETWEEN 570 AND 959
GROUP BY d
HAVING sum(v) > 0
) AS b
INNER JOIN
(
SELECT
toDate(toTimeZone(sip_timestamp, 'America/New_York')) AS d,
toFloat64(maxIf(size, has(conditions, 8))) AS closing_print
FROM global_markets.stocks_trades
WHERE ticker = 'AAPL'
AND sip_timestamp >= '2026-08-03 04:00:00'
AND sip_timestamp < '2026-09-01 04:00:00'
AND toHour(toTimeZone(sip_timestamp, 'America/New_York')) = 16
AND toMinute(toTimeZone(sip_timestamp, 'America/New_York')) < 10
GROUP BY d
HAVING countIf(has(conditions, 8)) > 0
) AS p ON p.d = b.d
ORDER BY b.d
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