43.91 USD
↗ 1.06 (2.47%)PRE MARKET (AS OF 05:29 AM EDT)
ALGM Stock Premarket
Allegro MicroSystems, Inc. Common Stock
ALGMNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
ALGM last traded at $43.91 in premarket, up $1.06 (2.47%) from its previous close of $42.85.
📅 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 Premarket Chart
ALGM Premarket 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 8 days ago, 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)
8 days ago
2026-07-28
Gap %
-7.05%
Gap From
$46.80
% vs Current
+9.22%
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 | ||||||
| 8 days ago | $46.80 | -7.05% | Open | — | — | 37% | 44% | 44% | 44% |
| 15 days ago | $46.36 | +6.23% | Filled | 1d | 4d | 54% | 100% | 100% | 100% |
| 19 days ago | $47.12 | -6.03% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 22 days ago | $50.85 | +6.60% | Filled | 1d | 2d | 90% | 100% | 100% | 100% |
| 27 days ago | $51.47 | +5.70% | Filled | 3d | 3d | 0% | 100% | 100% | 100% |
| 29 days ago | $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 premarket price?
Allegro MicroSystems (ALGM) is trading at $43.91 in premarket, up $1.06 (2.47%) from the previous close of $42.85.
Why is ALGM moving in premarket?
Allegro MicroSystems (ALGM) is up 2.47% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest ALGM premarket headlines and gap history below for the likely catalyst.
When does ALGM premarket trading start?
Premarket trading for ALGM on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
How often does ALGM fill its gaps?
Over the past 5 years, 83% of ALGM gap-ups have fully filled and 80% of gap-downs have filled. Median time to fill is 4 trading days for gap-ups and 4 trading days for gap-downs.
Does ALGM have any unfilled gaps?
Yes. ALGM has 1 unfilled gap from the past 60 days. The largest is a -7.0% gap down from Jul 28, 2026 and is currently 44% retraced.
What's the average return after a ALGM gap?
Based on 11 qualifying gap events over the past 5 years, the average 20-trading-day return after a ALGM gap up is +0.42%, and after a gap down is -3.27%.
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.