IPO Quiet Period Rules and Timeline
Days from announced deal to first trade, US listings since January 2025ranking ·
2026-08-19 · 7×3
The three clocks, dated, for the largest US listings since January 2025table ·
2026-08-19 · 10×7
How to Become a Registered Market Maker
Average quoted spread across six household names, midday July 16 2026ranking ·
2026-08-15 · 6×3
Quoted spread through one session, AAPL and KO, July 16 2026series ·
2026-08-15 · 26×3
Venues publishing a bid in AAPL over one half hour, July 16 2026ranking ·
2026-08-15 · 16×4
Listed AAPL option contracts by expiration, July 16 2026series ·
2026-08-15 · 24×4
The Vendor Display Rule: SEC Rule 603(c)
Consolidated spread vs single venue spread, AAPL, June 17 2026series ·
2026-08-10 · 90×4
Where AAPL trades printed, June 17 2026, 10:00 to 11:30 ETranking ·
2026-08-10 · 17×3
Which venue held the national best bid in AAPL, June 17 2026, 10:00 to 11:30 ETranking ·
2026-08-10 · 16×3
Days from announced deal to first trade, US listings since January 2025
Days from announced deal to first trade, US listings since January 2025
| bucket | deals_in_bucket | share_pct |
|---|---|---|
| under 30 days | 148 | 29 |
| 30 to 59 days | 108 | 21.1 |
| 60 to 89 days | 68 | 13.3 |
| 90 to 119 days | 55 | 10.8 |
| 120 to 149 days | 29 | 5.7 |
| 150 to 179 days | 19 | 3.7 |
| 180 days or more | 84 | 16.4 |
the exact SQL behind every number
WITH deals AS
(
SELECT
ticker,
max(listing_date) AS listed_on,
min(announced_date) AS announced_on
FROM global_markets.stocks_ipos
WHERE listing_date >= '2025-01-01'
AND listing_date < '2026-06-01'
AND final_issue_price > 0
AND ticker NOT IN ('SPCX')
GROUP BY ticker
HAVING announced_on > toDate('2015-01-01')
AND announced_on < listed_on
)
SELECT
multiIf(b = 0, 'under 30 days',
b = 6, '180 days or more',
concat(toString(b * 30), ' to ', toString(b * 30 + 29), ' days')) AS bucket,
deals_in_bucket,
round(100 * deals_in_bucket / sum(deals_in_bucket) OVER (), 1) AS share_pct
FROM
(
SELECT
least(intDiv(dateDiff('day', announced_on, listed_on), 30), 6) AS b,
count() AS deals_in_bucket
FROM deals
GROUP BY b
)
ORDER BY b
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