Clean Harbors
577 hedge funds and large institutions have $11.4B invested in Clean Harbors in 2025 Q2 according to their latest regulatory filings, with 74 funds opening new positions, 168 increasing their positions, 227 reducing their positions, and 58 closing their positions.
28% more first-time investments, than exits
New positions opened: 74 | Existing positions closed: 58
16% more capital invested
Capital invested by funds: $9.76B → $11.4B (+$1.6B)
2% more funds holding
Funds holding: 564 → 577 (+13)
0.92% more ownership
Funds ownership: 90.76% → 91.68% (+0.92%)
13% less funds holding in top 10
Funds holding in top 10: 15 → 13 (-2)
26% less repeat investments, than reductions
Existing positions increased: 168 | Existing positions reduced: 227
46% less call options, than puts
Call options by funds: $30.7M | Put options by funds: $56.4M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DCP
D1 Capital Partners
New York
|
+$274M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
+$103M |
| 3 |
William Blair Investment Management
Chicago,
Illinois
|
+$90.1M |
| 4 |
VNIM
Vaughan Nelson Investment Management
Houston,
Texas
|
+$56M |
| 5 |
Citadel Advisors
Miami,
Florida
|
+$42.7M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
-$87.9M |
| 2 |
Millennium Management
New York
|
-$64.2M |
| 3 |
HRCM
Hood River Capital Management
Palm Beach Gardens,
Florida
|
-$43.1M |
| 4 |
UBS AM
Chicago,
Illinois
|
-$39.2M |
| 5 |
Select Equity Group
New York
|
-$31.8M |
CLH Hedge Fund Activity: Q2 2025 in Review
577 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Clean Harbors (CLH) for Q2 2025, worth a combined $11.4B — up 16% from $9.76B a quarter earlier.
Buyers outnumbered sellers: 74 funds opened new CLH positions and 58 closed out — a net gain of 16 holders — while 168 added to existing stakes and 227 trimmed.
The largest buyer was D1 Capital Partners, adding an estimated $274M. The largest seller was Fidelity Investments, cutting an estimated $87.9M.
- 577 institutional investors held Clean Harbors (CLH) as of Q2 2025, up from 564 in Q1 2025.
- Funds reported $11.4B of Clean Harbors stock for Q2 2025, up 16% quarter-over-quarter.
- 74 funds opened new Clean Harbors positions in Q2 2025 and 58 closed out, a net change of +16 holders.
- The largest Clean Harbors buyer in Q2 2025 was D1 Capital Partners, an estimated $274M added.
- The largest Clean Harbors seller in Q2 2025 was Fidelity Investments, an estimated $87.9M sold.
Based on aggregated 13F filings for Q2 2025.