34.22 USD
↗ 0.37 (1.09%)AFTER HOURS (AS OF Mon 08:00 PM EDT)
ALGM Stock After Hours
Allegro MicroSystems, Inc. Common Stock
ALGMNASDAQ • USD
Market: CLOSED
After-hours trading runs 4:00 PM – 8:00 PM ET.
ALGM last traded at $34.22 after hours, up $0.37 (1.09%) from its regular-session close of $33.85.
📅 ALGM is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $0.25. ALGM earnings details →
ALGM After Hours Chart
ALGM After Hours News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, ALGM has had 11 qualifying gap events (gaps of 5% or more at the open) — 6 gap-ups and 5 gap-downs. Gap-ups averaged +6.5%, 83% have fully filled, median time to fill 4 trading days. Gap-downs averaged -8.3%, 80% have fully filled, median time to fill 4 trading days. Most recent: a -7% gap down on Jul 28, 2026, still unfilled. ALGM has 1 unfilled gap from the past 60 days — a -7% gap down on Jul 28, 2026, currently 44% retraced. Average 20-trading-day return after a ALGM gap up: +0.42%. After a gap down: -3.27%.
Gap Ups6 events
Fill Rate
83.3%
Avg Gap
6.5%
Avg 50% Fill
1d
Avg Fill
4d
Gap Downs5 events
Fill Rate
80.0%
Avg Gap
8.3%
Avg 50% Fill
2d
Avg Fill
4d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 83% | 100% | 100% | 100% |
| fills 50% | 50% | 83% | 83% | 83% |
| fills 75% | 33% | 83% | 83% | 83% |
| fills 100% | 0% | 67% | 83% | 83% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 80% | 100% | 100% | 100% |
| fills 50% | 40% | 80% | 80% | 80% |
| fills 75% | 20% | 60% | 60% | 80% |
| fills 100% | 20% | 60% | 60% | 80% |
Active Unfilled Gaps (past 60 days)
49 days ago
2026-07-28
Gap %
-7.05%
Gap From
$46.80
% vs Current
+38.26%
retraced 44% to $44.94
Complete Gap History — 11 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-07-28 | $46.80 | -7.05% | Open | — | — | 37% | 44% | 44% | 44% |
| 2026-07-21 | $46.36 | +6.23% | Filled | 1d | 4d | 54% | 100% | 100% | 100% |
| 2026-07-17 | $47.12 | -6.03% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-07-14 | $50.85 | +6.60% | Filled | 1d | 2d | 90% | 100% | 100% | 100% |
| 2026-07-09 | $51.47 | +5.70% | Filled | 3d | 3d | 0% | 100% | 100% | 100% |
| 2026-07-07 | $56.56 | -6.35% | Filled | 3d | 3d | 22% | 100% | 100% | 100% |
| 2026-06-25 | $55.42 | +5.40% | Filled | 1d | 6d | 92% | 100% | 100% | 100% |
| 2026-06-23 | $61.58 | -7.76% | Filled | 3d | 5d | 35% | 100% | 100% | 100% |
| 2026-06-18 | $53.98 | +5.97% | Filled | 3d | 10d | 28% | 94% | 100% | 100% |
| 2026-05-07 | $51.37 | -14.54% | Filled | 1d | 14d | 75% | 75% | 75% | 100% |
| 2026-04-08 | $33.28 | +9.16% | Open | — | — | 36% | 36% | 36% | 36% |
Frequently Asked Questions
What is ALGM's after-hours price?
Allegro MicroSystems (ALGM) is trading at $34.22 after hours, up $0.37 (1.09%) from its regular-session close of $33.85.
Why is ALGM moving after hours?
ALGM is up 1.09% 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.
When does ALGM after-hours trading start and end?
After-hours trading in ALGM on the NASDAQ 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.
Will ALGM's after-hours move hold at the open?
An after-hours move that carries into the next session becomes an opening gap, and ALGM's gap history is the best guide to what happens next: 83% of ALGM gap-ups have fully filled, and 80% 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.
When does ALGM report earnings?
ALGM is expected to report earnings around Oct 29, 2026 before the open (estimated), with an estimated EPS of $0.25. Earnings are the most common cause of a large after-hours move, since most companies report after the close.