Clean Harbors
566 hedge funds and large institutions have $12.1B invested in Clean Harbors in 2025 Q4 according to their latest regulatory filings, with 90 funds opening new positions, 158 increasing their positions, 223 reducing their positions, and 86 closing their positions.
3.49% more ownership
Funds ownership: 92.78% → 96.27% (+3.5%)
5% more first-time investments, than exits
New positions opened: 90 | Existing positions closed: 86
4% more capital invested
Capital invested by funds: $11.6B → $12.1B (+$510M)
1% less funds holding
Funds holding: 569 → 566 (-3)
8% less funds holding in top 10
Funds holding in top 10: 13 → 12 (-1)
29% less repeat investments, than reductions
Existing positions increased: 158 | Existing positions reduced: 223
75% less call options, than puts
Call options by funds: $5.21M | Put options by funds: $21.1M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
LPC
Lone Pine Capital
Greenwich,
Connecticut
|
+$315M |
| 2 |
PCM
Palestra Capital Management
New York
|
+$130M |
| 3 |
Nordea Investment Management
Stockholm,
Sweden
|
+$130M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$83.1M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
+$78.2M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
-$89.5M |
| 2 |
Handelsbanken Fonder
Stockholm,
Sweden
|
-$65.7M |
| 3 |
American Century Companies
Kansas City,
Missouri
|
-$46.8M |
| 4 |
Pictet Asset Management
Carouge,
Switzerland
|
-$42.4M |
| 5 |
Bessemer Group
Woodbridge,
New Jersey
|
-$41.7M |
CLH Hedge Fund Activity: Q4 2025 in Review
566 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Clean Harbors (CLH) for Q4 2025, worth a combined $12.1B — up 4.4% from $11.6B a quarter earlier.
Buyers outnumbered sellers: 90 funds opened new CLH positions and 86 closed out — a net gain of 4 holders — while 158 added to existing stakes and 223 trimmed.
The largest buyer was Lone Pine Capital, opening a new position worth an estimated $315M. The largest seller was Wellington Management Group, cutting an estimated $89.5M.
- 566 institutional investors held Clean Harbors (CLH) as of Q4 2025, down from 569 in Q3 2025.
- Funds reported $12.1B of Clean Harbors stock for Q4 2025, up 4.4% quarter-over-quarter.
- 90 funds opened new Clean Harbors positions in Q4 2025 and 86 closed out, a net change of +4 holders.
- The largest Clean Harbors buyer in Q4 2025 was Lone Pine Capital, an estimated $315M added.
- The largest Clean Harbors seller in Q4 2025 was Wellington Management Group, an estimated $89.5M sold.
Based on aggregated 13F filings for Q4 2025.