Data from public SEC 13F & STOCK Act filings, delayed up to ~45 days, partial holdings only — for research, not investment advice.
CLH
CLEAN HARBORS INCData as of 2026 Q1 (03-31) · 13F snapshot
Summary
CLEAN HARBORS INC (CLH) is held by 7 tracked hedge-fund managers, a combined reported value of ~$598.20M; the largest are Stephen Mandel, Joel Greenblatt, Izzy Englander. This quarter: 1 new, 3 added, 1 trimmed. 9 members of Congress have disclosed STOCK Act trades. Data as of 2026 Q1, from public SEC 13F filings, delayed up to ~45 days.
Attention · MediumThis quarter · Heating up
Gurus holding7
Congress trades9
Price$287.78vs quarter-end+0.37%
Sectors0
This quarter's moves
Top holderStephen MandelNew1
Added3
Trimmed / sold1
Value $503.20M4.0% of portfolio1,754,9502026 Q1
Value $3.87M— of portfolio13,5002026 Q1
Value $3.33M— of portfolio11,6002026 Q1
Value $483.4K— of portfolio2,0002024 Q3
Value $230.1K— of portfolio1,0002024 Q4
| Investor | Value | % of portfolio | Action |
|---|---|---|---|
| Stephen Mandel | $503.20M | 4.0% | Add |
| Ken GriffinCALL | $3.87M | — | — |
| Ken GriffinPUT | $3.33M | — | — |
| Izzy EnglanderCALL | $483.4K | — | — |
| Izzy EnglanderPUT | $230.1K | — | — |