Clean Harbors Inc
CLH- Exchange
- NYSE
- Industry
- Hazardous Waste Management
- SEC CIK
- 0000822818
In the last 90 days, Clean Harbors Inc insiders filed 0 open-market purchases and 5 sales; 663 institutions reported holding it in 13F filings for Q2 2026, worth $14.8B in total; D1 Capital Partners is the only superinvestor holding it.
Q4 2025 vs. Q3 2025
How the institutions holding Clean Harbors Inc changed between Q3 2025 and Q4 2025.
All holders in Q4 2025All holders in Q3 2025
| Measure | Q3 2025 | Of which not filed for Q4 2025 | Q4 2025 | Change |
|---|---|---|---|---|
| Holders | 569 | 8 | 568 | +7 |
| Shares | 49.8M | 239.2K | 51.5M | +1.95M (+3.9%) |
| Value | $11.6B | $55.5M | $12.1B | +$571.8M (+5.0%) |
8 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so the changes leave them out.
New holders (92)
Institutions that held Clean Harbors Inc at the end of Q4 2025 but not at the end of Q3 2025.
Sold out (85)
Institutions that held Clean Harbors Inc at the end of Q3 2025 and filed for Q4 2025 without it.
Not filed for Q4 2025 yet (8)
Institutions that held Clean Harbors Inc at the end of Q3 2025 and haven't filed a 13F for Q4 2025. Not filing isn't selling, so they aren't counted as sold out.
| Institution | Shares, Q3 2025 | Value, Q3 2025 |
|---|---|---|
| Thematics Asset Management | 192,300 | $44.7M |
| AXA Investment Managers S.A. | 37,954 | $8.81M |
| Wetherby Asset Management Inc | 2,664 | $618.6K |
| Pinebridge Investments, L.P. | 2,103 | $488.4K |
| Amica Retiree Medical Trust | 1,921 | $446.0K |
| Wolverine Trading, LLC | 1,342 | $313.3K |
| Shell Asset Management Co | 652 | $151.0K |
| Hemington Wealth Management | 266 | $61.0K |