Clean Harbors
569 hedge funds and large institutions have $11.6B invested in Clean Harbors in 2025 Q3 according to their latest regulatory filings, with 74 funds opening new positions, 172 increasing their positions, 204 reducing their positions, and 76 closing their positions.
1.1% more ownership
Funds ownership: 91.68% → 92.78% (+1.1%)
2% more capital invested
Capital invested by funds: $11.4B → $11.6B (+$199M)
0% more funds holding in top 10
Funds holding in top 10: 13 → 13 (0)
3% less first-time investments, than exits
New positions opened: 74 | Existing positions closed: 76
1% less funds holding
Funds holding: 577 → 569 (-8)
16% less repeat investments, than reductions
Existing positions increased: 172 | Existing positions reduced: 204
61% less call options, than puts
Call options by funds: $13.3M | Put options by funds: $33.8M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCP
D1 Capital Partners
New York
|
+$237M |
| 2 |
DCP
Durable Capital Partners
Bethesda,
Maryland
|
+$136M |
| 3 |
Nordea Investment Management
Stockholm,
Sweden
|
+$112M |
| 4 |
Goldman Sachs
New York
|
+$57.3M |
| 5 |
Two Sigma Investments
New York
|
+$54.4M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Citadel Advisors
Miami,
Florida
|
-$56.9M |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
-$50.4M |
| 3 |
Wellington Management Group
Boston,
Massachusetts
|
-$45.2M |
| 4 |
Marshall Wace
London,
United Kingdom
|
-$45M |
| 5 |
Invesco
Atlanta,
Georgia
|
-$44.5M |
CLH Hedge Fund Activity: Q3 2025 in Review
569 of the 7,638 institutional investors tracked by Wall St. Rank reported a position in Clean Harbors (CLH) for Q3 2025, worth a combined $11.6B — up 1.8% from $11.4B a quarter earlier.
Sellers outnumbered buyers: 76 funds closed out of CLH and 74 opened new positions — a net loss of 2 holders — while 204 trimmed existing stakes and 172 added.
The largest buyer was D1 Capital Partners, adding an estimated $237M. The largest seller was Citadel Advisors, exiting entirely with an estimated $56.9M sold.
- 569 institutional investors held Clean Harbors (CLH) as of Q3 2025, down from 577 in Q2 2025.
- Funds reported $11.6B of Clean Harbors stock for Q3 2025, up 1.8% quarter-over-quarter.
- 74 funds opened new Clean Harbors positions in Q3 2025 and 76 closed out, a net change of -2 holders.
- The largest Clean Harbors buyer in Q3 2025 was D1 Capital Partners, an estimated $237M added.
- The largest Clean Harbors seller in Q3 2025 was Citadel Advisors, an estimated $56.9M sold.
Based on aggregated 13F filings for Q3 2025.