After-hours trading runs 4:00 PM – 8:00 PM ET.
AJG last traded at $240.47 after hours, up $0.15 (0.06%) from its regular-session close of $240.32.
📅 AJG is expected to report earnings around Oct 29, 2026 after the close (estimated), with an estimated EPS of $3.04. AJG earnings details →
Over the past 5 years, AJG has had 3 qualifying gap events (gaps of 5% or more at the open) — 2 gap-ups and 1 gap-down. Gap-ups averaged +5.1%, 100% have fully filled, median time to fill 1.5 trading days. Gap-downs averaged -7.4%, 100% have fully filled, median time to fill 11 trading days. Most recent: a +5.1% gap up on May 1, 2026, which filled in 2 trading days. Average 20-trading-day return after a AJG gap up: -1.75%. After a gap down: +1.38%.
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 100% | 100% | 100% | 100% |
| fills 75% | 100% | 100% | 100% | 100% |
| fills 100% | 50% | 100% | 100% | 100% |
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 100% | 100% | 100% | 100% |
| fills 75% | 0% | 0% | 100% | 100% |
| fills 100% | 0% | 0% | 100% | 100% |
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-05-01 | $206.40 | +5.14% | Filled | 1d | 2d | 98% | 100% | 100% | 100% |
| 2025-10-31 | $262.03 | -7.36% | Filled | 1d | 11d | 61% | 61% | 100% | 100% |
| 2022-07-29 | $176.06 | +5.01% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
Arthur J. Gallagher & (AJG) is trading at $240.47 after hours, up $0.15 (0.06%) from its regular-session close of $240.32.
AJG is up 0.06% in after-hours trading. Moves in this session almost always follow something released after the 4:00 PM ET close — an earnings report, guidance, a filing, or news — and trade on far thinner volume than the regular session, so the size of the move can overstate what the market will settle on at the next open.
After-hours trading in AJG on the NYSE runs from 4:00 PM to 8:00 PM ET on trading days, immediately after the regular session closes. Not every broker offers the full window, and liquidity thins sharply after about 6:30 PM ET.
An after-hours move that carries into the next session becomes an opening gap, and AJG's gap history is the best guide to what happens next: 100% of AJG gap-ups have fully filled, and 100% of gap-downs have filled over the past 5 years. Fill rates this high mean a large after-hours move is more often faded than extended.
AJG is expected to report earnings around Oct 29, 2026 after the close (estimated), with an estimated EPS of $3.04. Earnings are the most common cause of a large after-hours move, since most companies report after the close.