257.32 USD
↗ 0.28 (0.11%)PRE MARKET (AS OF 08:39 AM EDT)
ALAB Stock Premarket
Astera Labs, Inc. Common Stock
ALABNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
ALAB is trading at $257.32 in premarket, up $0.28 (0.11%) from its previous close of $257.04.
Related PremarketCRDO
ALAB Premarket Chart
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, ALAB has had 63 qualifying gap events (gaps of 5% or more at the open) — 35 gap-ups and 28 gap-downs. Gap-ups averaged +8.4%, 74% have fully filled, median time to fill 2 trading days. Gap-downs averaged -7.4%, 89% have fully filled, median time to fill 3 trading days. Most recent: a -7.5% gap down 1 day ago, still unfilled. ALAB has 2 unfilled gaps from the past 60 days; the largest is a +13% gap up on Jul 30, 2026, currently 79% retraced. Average 20-trading-day return after a ALAB gap up: +9.67%. After a gap down: +8.33%.
Gap Ups35 events
Fill Rate
74.3%
Avg Gap
8.4%
Avg 50% Fill
1d
Avg Fill
2d
Gap Downs28 events
Fill Rate
89.3%
Avg Gap
7.4%
Avg 50% Fill
1d
Avg Fill
3d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 71% | 91% | 91% | 91% |
| fills 50% | 51% | 80% | 80% | 80% |
| fills 75% | 37% | 71% | 71% | 74% |
| fills 100% | 23% | 63% | 69% | 74% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 75% | 82% | 86% | 89% |
| fills 50% | 57% | 75% | 82% | 89% |
| fills 75% | 39% | 75% | 79% | 86% |
| fills 100% | 25% | 71% | 75% | 86% |
Active Unfilled Gaps (past 60 days)
1 day ago
2026-09-14
Gap %
-7.54%
Gap From
$291.22
% vs Current
+13.30%
retraced 14% to $272.28
47 days ago
2026-07-30
Gap %
+12.99%
Gap From
$249.74
% vs Current
-2.84%
retraced 79% to $256.52
Complete Gap History — 63 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 1 day ago | $291.22 | -7.54% | Open | — | — | 14% | 14% | 14% | 14% |
| 28 days ago | $320.17 | -5.05% | Filled | 14d | 14d | 49% | 49% | 49% | 100% |
| 29 days ago | $321.61 | +7.26% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-08-12 | $311.99 | +7.21% | Filled | 1d | 2d | 72% | 100% | 100% | 100% |
| 2026-08-04 | $321.05 | +7.78% | Filled | 2d | 2d | 24% | 100% | 100% | 100% |
| 2026-07-31 | $299.69 | +9.55% | Filled | 1d | 2d | 81% | 100% | 100% | 100% |
| 2026-07-30 | $249.74 | +12.99% | Open | 26d | — | 28% | 28% | 28% | 49% |
| 2026-07-28 | $282.52 | -5.50% | Filled | 3d | 3d | 11% | 100% | 100% | 100% |
| 2026-07-21 | $309.09 | +5.65% | Filled | 1d | 2d | 73% | 100% | 100% | 100% |
| 2026-07-14 | $362.05 | +8.28% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-07-09 | $393.16 | +6.28% | Filled | 2d | 3d | 23% | 100% | 100% | 100% |
| 2026-07-07 | $432.74 | -6.84% | Filled | 3d | 3d | 48% | 100% | 100% | 100% |
| 2026-06-25 | $399.92 | +5.67% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-06-23 | $439.66 | -9.15% | Filled | 1d | 5d | 50% | 100% | 100% | 100% |
| 2026-05-15 | $228.64 | -5.31% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-05-06 | $215.69 | +6.52% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2026-04-28 | $196.64 | -7.85% | Filled | 1d | 2d | 58% | 100% | 100% | 100% |
| 2026-04-21 | $175.80 | +7.37% | Open | 6d | — | 41% | 71% | 71% | 71% |
| 2026-04-08 | $118.99 | +7.57% | Open | 1d | — | 67% | 67% | 67% | 67% |
| 2026-03-05 | $113.77 | +5.07% | Filled | 2d | 3d | 37% | 100% | 100% | 100% |
| 2026-02-11 | $182.86 | -12.09% | Filled | 43d | 48d | 6% | 6% | 6% | 6% |
| 2026-02-06 | $142.82 | +6.73% | Filled | 4d | 4d | 10% | 100% | 100% | 100% |
| 2025-12-09 | $175.74 | -6.63% | Filled | 1d | 15d | 65% | 89% | 97% | 100% |
| 2025-12-03 | $142.94 | +5.16% | Filled | 1d | 10d | 77% | 77% | 100% | 100% |
| 2025-11-20 | $142.01 | +8.78% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-11-04 | $191.56 | -5.32% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-10-31 | $169.55 | +7.05% | Filled | 4d | 5d | 4% | 100% | 100% | 100% |
| 2025-10-15 | $161.55 | +5.58% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-10-14 | $199.53 | -7.86% | Filled | 14d | 14d | 1% | 1% | 1% | 100% |
| 2025-10-06 | $200.74 | +13.86% | Filled | 2d | 6d | 42% | 100% | 100% | 100% |
| 2025-09-29 | $197.78 | +5.28% | Filled | 1d | 2d | 95% | 100% | 100% | 100% |
| 2025-09-25 | $205.27 | -6.20% | Filled | 1d | 3d | 99% | 100% | 100% | 100% |
| 2025-09-24 | $230.11 | -7.87% | Filled | 9d | 9d | 9% | 9% | 100% | 100% |
| 2025-09-10 | $214.49 | +5.10% | Filled | 1d | 11d | 77% | 77% | 100% | 100% |
| 2025-08-06 | $135.54 | +21.73% | Open | 55d | — | 15% | 15% | 15% | 15% |
| 2025-08-01 | $136.73 | -7.43% | Filled | 1d | 2d | 74% | 100% | 100% | 100% |
| 2025-07-21 | $102.13 | +8.47% | Open | — | — | 1% | 36% | 36% | 36% |
| 2025-05-12 | $71.20 | +12.41% | Open | — | — | 40% | 40% | 40% | 40% |
| 2025-05-07 | $71.36 | -5.61% | Filled | 1d | 2d | 99% | 100% | 100% | 100% |
| 2025-05-01 | $65.31 | +5.04% | Filled | 5d | 5d | 11% | 100% | 100% | 100% |
| 2025-04-23 | $55.31 | +9.82% | Open | — | — | 26% | 26% | 26% | 26% |
| 2025-04-16 | $60.08 | -5.86% | Filled | 1d | 5d | 80% | 100% | 100% | 100% |
| 2025-04-14 | $60.13 | +5.26% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-08 | $55.16 | +7.54% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-07 | $52.94 | -8.37% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-04-04 | $55.68 | -5.78% | Filled | 2d | 2d | 39% | 100% | 100% | 100% |
| 2025-04-03 | $64.08 | -9.35% | Filled | 5d | 5d | 32% | 100% | 100% | 100% |
| 2025-03-12 | $66.05 | +5.84% | Filled | 1d | 2d | 58% | 100% | 100% | 100% |
| 2025-03-06 | $68.57 | -6.17% | Filled | 2d | 5d | 45% | 100% | 100% | 100% |
| 2025-02-11 | $103.29 | -5.98% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-02-03 | $101.42 | -12.34% | Filled | 1d | 2d | 96% | 100% | 100% | 100% |
| 2025-01-28 | $83.16 | +6.80% | Filled | 1d | 19d | 88% | 88% | 88% | 100% |
| 2025-01-27 | $115.55 | -11.52% | Open | 9d | — | 6% | 28% | 67% | 67% |
| 2024-11-21 | $97.42 | +5.05% | Filled | 5d | 5d | 21% | 100% | 100% | 100% |
| 2024-11-06 | $95.91 | -6.16% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-11-05 | $69.65 | +23.98% | Open | — | — | 13% | 13% | 13% | 13% |
| 2024-10-09 | $52.96 | +15.48% | Open | — | — | 21% | 21% | 21% | 21% |
| 2024-08-05 | $42.38 | -11.47% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-08-02 | $40.45 | -5.98% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2024-07-31 | $42.22 | +5.19% | Filled | 2d | 2d | 43% | 100% | 100% | 100% |
| 2024-05-08 | $76.19 | -6.73% | Filled | 1d | 6d | 61% | 100% | 100% | 100% |
| 2024-05-01 | $84.76 | -5.00% | Open | — | — | 2% | 17% | 17% | 17% |
| 2024-03-21 | $62.03 | +6.40% | Filled | 1d | 21d | 64% | 64% | 64% | 100% |
Related: ALAB quote & chart · After hours · Technical analysis · Fundamentals · Earnings · Short interest
Frequently Asked Questions
What is ALAB's premarket price?
Astera Labs (ALAB) is trading at $257.32 in premarket, up $0.28 (0.11%) from the previous close of $257.04.
Why is ALAB moving in premarket?
Astera Labs (ALAB) is up 0.11% 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 ALAB premarket headlines and gap history below for the likely catalyst.
When does ALAB premarket trading start?
Premarket trading for ALAB 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 ALAB fill its gaps?
Over the past 5 years, 74% of ALAB gap-ups have fully filled and 89% of gap-downs have filled. Median time to fill is 2 trading days for gap-ups and 3 trading days for gap-downs.
Does ALAB have any unfilled gaps?
Yes. ALAB has 2 unfilled gaps from the past 60 days. The largest is a +13.0% gap up from Jul 30, 2026 and is currently 79% retraced.
What's the average return after a ALAB gap?
Based on 63 qualifying gap events over the past 5 years, the average 20-trading-day return after a ALAB gap up is +9.67%, and after a gap down is +8.33%.