Casella Waste Systems
CWST
393 hedge funds and large institutions have $7.59B invested in Casella Waste Systems in 2025 Q4 according to their latest regulatory filings, with 85 funds opening new positions, 162 increasing their positions, 96 reducing their positions, and 74 closing their positions.
687% more call options, than puts
Call options by funds: $3.01M | Put options by funds: $382K
69% more repeat investments, than reductions
Existing positions increased: 162 | Existing positions reduced: 96
67% more funds holding in top 10
Funds holding in top 10: 6 → 10 (+4)
21% more capital invested
Capital invested by funds: $6.29B → $7.59B (+$1.29B)
17.73% more ownership
Funds ownership: 106.21% → 123.95% (+18%)
15% more first-time investments, than exits
New positions opened: 85 | Existing positions closed: 74
1% more funds holding
Funds holding: 391 → 393 (+2)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BlackRock
New York
|
+$417M |
| 2 |
Pictet Asset Management
Carouge,
Switzerland
|
+$91.1M |
| 3 |
State Street
Boston,
Massachusetts
|
+$80.9M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$67.8M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$54M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Macquarie Group
Sydney, NSW 2000,
Australia
|
-$99.3M |
| 2 |
ZP
Zimmer Partners
New York
|
-$32.9M |
| 3 |
William Blair Investment Management
Chicago,
Illinois
|
-$31.7M |
| 4 |
Ameriprise
Minneapolis,
Minnesota
|
-$28.1M |
| 5 |
GACM
Global Alpha Capital Management
Montreal,
Quebec, Canada
|
-$22.8M |
CWST Hedge Fund Activity: Q4 2025 in Review
393 of the 8,267 institutional investors tracked by Wall St. Rank reported a position in Casella Waste Systems (CWST) for Q4 2025, worth a combined $7.59B — up 21% from $6.29B a quarter earlier.
Buyers outnumbered sellers: 85 funds opened new CWST positions and 74 closed out — a net gain of 11 holders — while 162 added to existing stakes and 96 trimmed.
The largest buyer was BlackRock, adding an estimated $417M. The largest seller was Macquarie Group, exiting entirely with an estimated $99.3M sold.
- 393 institutional investors held Casella Waste Systems (CWST) as of Q4 2025, up from 391 in Q3 2025.
- Funds reported $7.59B of Casella Waste Systems stock for Q4 2025, up 21% quarter-over-quarter.
- 85 funds opened new Casella Waste Systems positions in Q4 2025 and 74 closed out, a net change of +11 holders.
- The largest Casella Waste Systems buyer in Q4 2025 was BlackRock, an estimated $417M added.
- The largest Casella Waste Systems seller in Q4 2025 was Macquarie Group, an estimated $99.3M sold.
Based on aggregated 13F filings for Q4 2025.