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.
Superinvestors holding CLH, Q2 2026
1 superinvestor reports holding Clean Harbors Inc on Form 13F, worth $393.0M in total. Weight is Clean Harbors Inc's share of each 13F portfolio; actions compare shares with Q1 2026.
| Superinvestor | % of portfolio | Shares | Value | vs. previous quarter |
|---|---|---|---|---|
| D1 Capital PartnersDan Sundheim | 1.1% | 1,315,501 | $393.0M | Reduced−1.7% |
Moves by quarter
Superinvestors that opened, added to, trimmed or sold out of CLH each quarter, comparing shares with the quarter before. A superinvestor that didn't file for a quarter isn't listed, and isn't counted as selling.
Q2 2026
1 superinvestor holding at quarter end
- Reduced
- D1 Capital Partners (−1.7%)
- Sold out
- Lone Pine Capital
Q1 2026
2 superinvestors holding at quarter end
- Added
- Lone Pine Capital (+27.3%)
- Reduced
- D1 Capital Partners (−51.9%)
Q4 2025
2 superinvestors holding at quarter end
- New
- Lone Pine Capital
- Added
- D1 Capital Partners (+13.8%)
Q3 2025
1 superinvestor holding at quarter end
- Added
- D1 Capital Partners (+69.4%)
Q2 2025
1 superinvestor holding at quarter end
- Added
- D1 Capital Partners (+647.9%)
Q1 2025
1 superinvestor holding at quarter end
Q1 2022
0 superinvestors holding at quarter end
- Sold out
- Maverick Capital
Q4 2021
1 superinvestor holding at quarter end
- Reduced
- Maverick Capital (−68.7%)
Q3 2021
1 superinvestor holding at quarter end
- Reduced
- Maverick Capital (−51.5%)
Q2 2021
1 superinvestor holding at quarter end
- Reduced
- Maverick Capital (−9.2%)