333.00 USD
↗ 0.03 (0.01%)PRE MARKET (AS OF 05:29 AM EDT)
HEI Stock Premarket
HEICO Corporation
HEINYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
HEI Premarket Chart
HEI Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, HEI has had 6 qualifying gap events (gaps of 5% or more at the open) — 5 gap-ups and 1 gap-down. Gap-ups averaged +7.9%, 60% have fully filled, median time to fill 4 trading days. Gap-downs averaged -9.3%, 0% have fully filled. Most recent: a +12.1% gap up 9 days ago, still unfilled. HEI has 1 unfilled gap from the past 60 days — a +12.1% gap up on May 28, 2026, currently 53% retraced. Average 20-trading-day return after a HEI gap up: +4.02%. After a gap down: -12.8%.
Gap Ups5 events
Fill Rate
60.0%
Avg Gap
7.9%
Avg 50% Fill
4d
Avg Fill
4d
Gap Downs1 events
Fill Rate
0.0%
Avg Gap
9.3%
Avg 50% Fill
3d
Avg Fill
—
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 60% | 80% | 80% | 80% |
| fills 50% | 40% | 80% | 80% | 80% |
| fills 75% | 40% | 60% | 60% | 60% |
| fills 100% | 20% | 40% | 40% | 40% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 0% | 100% | 100% | 100% |
| fills 75% | 0% | 0% | 0% | 0% |
| fills 100% | 0% | 0% | 0% | 0% |
Active Unfilled Gaps (past 60 days)
9 days ago
2026-05-28
Gap %
+12.06%
Gap From
$309.40
% vs Current
-6.65%
retraced 53% to $327.05
Complete Gap History — 6 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 9 days ago | $309.40 | +12.06% | Open | 4d | — | 30% | 52% | 53% | 53% |
| 2026-02-26 | $344.72 | -9.30% | Open | 3d | — | 28% | 71% | 71% | 71% |
| 2025-08-26 | $305.34 | +5.45% | Filled | 4d | 36d | 18% | 82% | 82% | 82% |
| 2025-04-08 | $236.44 | +5.13% | Filled | 1d | 1d | 100% | 100% | 100% | 100% |
| 2025-02-27 | $227.45 | +7.72% | Open | 28d | — | 0% | 0% | 0% | 0% |
| 2024-08-15 | $236.89 | +9.26% | Filled | 1d | 4d | 97% | 100% | 100% | 100% |
Frequently Asked Questions
What is HEI's premarket price?
HEI (HEI) is trading at $333.00 in premarket, up $0.03 (+0.01%) from the previous close of $332.97.
When does HEI premarket trading start?
Premarket trading for HEI on the NYSE 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 HEI fill its gaps?
Over the past 5 years, 60% of HEI gap-ups have fully filled and 0% of gap-downs have filled. Median time to fill is 4 trading days for gap-ups.
Does HEI have any unfilled gaps?
Yes. HEI has 1 unfilled gap from the past 60 days. The largest is a +12.1% gap up from May 28, 2026 and is currently 53% retraced.
What's the average return after a HEI gap?
Based on 6 qualifying gap events over the past 5 years, the average 20-trading-day return after a HEI gap up is +4.02%, and after a gap down is -12.8%.