291.46 USD
↗ 4.56 (1.61%)PRE MARKET (AS OF 05:29 AM EDT)
CLH Stock Premarket
Clean Harbors, Inc
CLHNYSE • USD
Market: CLOSED
Premarket trading runs 4:00 AM – 9:30 AM ET.
CLH Premarket Chart
CLH Premarket News
Gap Analytics — 5-year history, 5% minimum gap
Over the past 5 years, CLH has had 7 qualifying gap events (gaps of 5% or more at the open) — 2 gap-ups and 5 gap-downs. Gap-ups averaged +6.7%, 50% have fully filled, median time to fill 5 trading days. Gap-downs averaged -8.8%, 100% have fully filled, median time to fill 5 trading days. Most recent: a +5.2% gap up on Apr 8, 2026, which filled in 5 trading days. Average 20-trading-day return after a CLH gap up: +0.99%. After a gap down: +9.44%.
Gap Ups2 events
Fill Rate
50.0%
Avg Gap
6.7%
Avg 50% Fill
1d
Avg Fill
5d
Gap Downs5 events
Fill Rate
100.0%
Avg Gap
8.8%
Avg 50% Fill
1d
Avg Fill
5d
Avg Gap Fill by Timeframes
Gap Ups
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 50% | 50% | 50% | 50% |
| fills 50% | 50% | 50% | 50% | 50% |
| fills 75% | 50% | 50% | 50% | 50% |
| fills 100% | 0% | 50% | 50% | 50% |
Gap Downs
| 1 day | 1 week | 2 week | 4 week | |
|---|---|---|---|---|
| fills 25% | 100% | 100% | 100% | 100% |
| fills 50% | 60% | 80% | 80% | 80% |
| fills 75% | 20% | 80% | 80% | 80% |
| fills 100% | 0% | 60% | 80% | 80% |
Complete Gap History — 7 events
| Date | Gap From | Gap % | Status | Days to 50% | Days to Fill | % of Gap Filled After | |||
|---|---|---|---|---|---|---|---|---|---|
| 1 day | 1 week | 2 week | 4 week | ||||||
| 2026-04-08 | $298.86 | +5.15% | Filled | 1d | 5d | 84% | 100% | 100% | 100% |
| 2025-10-29 | $246.19 | -13.29% | Filled | 23d | 47d | 45% | 45% | 45% | 46% |
| 2025-07-30 | $238.29 | -6.40% | Filled | 1d | 5d | 90% | 100% | 100% | 100% |
| 2024-10-30 | $263.39 | -10.78% | Filled | 6d | 7d | 33% | 92% | 100% | 100% |
| 2024-08-05 | $235.00 | -5.41% | Filled | 1d | 4d | 69% | 100% | 100% | 100% |
| 2023-11-01 | $153.67 | -8.24% | Filled | 1d | 2d | 54% | 100% | 100% | 100% |
| 2022-08-03 | $98.23 | +8.33% | Open | — | — | 10% | 10% | 10% | 10% |
Frequently Asked Questions
What is CLH's premarket price?
Clean Harbors (CLH) is trading at $291.46 in premarket, up $4.56 (+1.61%) from the previous close of $286.90.
When does CLH premarket trading start?
Premarket trading for CLH 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 CLH fill its gaps?
Over the past 5 years, 50% of CLH gap-ups have fully filled and 100% of gap-downs have filled. Median time to fill is 5 trading days for gap-ups and 5 trading days for gap-downs.
Does CLH have any unfilled gaps?
No. CLH has no unfilled gap events from the past 60 days; all recent gaps have been filled.
What's the average return after a CLH gap?
Based on 7 qualifying gap events over the past 5 years, the average 20-trading-day return after a CLH gap up is +0.99%, and after a gap down is +9.44%.