CWST Institutional Ownership
Who owns Casella Waste Systems Inc and what the big funds did with it last quarter, from every SEC 13F filing. 419 funds reported holding CWST at Jun 30, 2026.
- ▲227 buying vs 179 selling
- ▲Shares held by funds +3.6%
- ▲Funds holding +9
- ▲Superinvestors: 2 added, 1 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 419 | 410 | +2.2% |
| In funds' top 10 | 6 | 3 | +100.0% |
| 13F shares | 77.3M | 74.6M | +3.6% |
| Held by funds | – | – | – |
| New positions | 60 | 60 | 0.0% |
| Increased | 167 | 127 | +31.5% |
| Reduced | 126 | 156 | −19.2% |
| Sold out | 53 | 48 | +10.4% |
| Calls (shares) | 0 | 5,000 | −100.0% |
| Puts (shares) | 0 | 0 | – |
| Put/call ratio | – | 0.00 | – |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in CWST
All superinvestors →
Who owns CWST
share of fund held shares- Index and passive funds32.0%
- Active managers and hedge funds54.2%
- Banks and brokers12.1%
- Pensions, insurers and other1.7%
The top 10 holders own 41.2% of all CWST shares that funds reported. Groups are our own grouping of filers by name.
Filed so far for Q3 2026
91 funds changed their position- Conestoga Capital Advisors, LLCTrimmed−615K sh
- Wasatch Advisors LPTrimmed−476K sh
- Achmea Investment Management B.V.New+46K sh
- Strs OhioAdded+33K sh
- Moody Aldrich Partners LLCSold out−23K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | – | 9.4M | $911M | +343K |
| 2 | Wasatch Advisors LP | – | 3.5M | $342M | +949K |
| 3 | Vanguard Portfolio Management LLC | – | 3.4M | $334M | +96K |
| 4 | Vanguard Capital Management LLC | – | 2.8M | $274M | +24K |
| 5 | State Street Corp | – | 2.5M | $244M | +131K |
| 6 | Conestoga Capital Advisors, LLC | – | 2.3M | $227M | −468K |
| 7 | T. Rowe Price Investment Management, Inc. | – | 2.1M | $202M | +379K |
| 8 | Capital International Investors | – | 2.1M | $199M | +102K |
| 9 | Capital Research Global Investors | – | 2M | $197M | −302K |
| 10 | Geode Capital Management, LLC | – | 1.6M | $160M | +94K |
- Wasatch Advisors LP+949K sh+$92.1M
- American Century Companies Inc+806K sh+$78.1M
- Neuberger Berman Group LLC+481K sh+$46.6M
- Norges Bank+476K sh+$46.2M
- Citadel Advisors LLC+421K sh+$40.8M
- T. Rowe Price Investment Management, Inc.+379K sh+$36.7M
- Bank of America Corp /de/+369K sh+$35.8M
- BlackRock, Inc.+343K sh+$33.2M
- William Blair Investment Management, LLC−989K sh−$95.9M
- Conestoga Capital Advisors, LLC−468K sh−$45.4M
- Woodline Partners LP−415K sh−$33M
- Capital World Investors−392K sh−$31.1M
- Capital Research Global Investors−302K sh−$29.2M
- Global Alpha Capital Management Ltd.−326K sh−$25.9M
- Geneva Capital Management LLC−252K sh−$24.4M
- Goldman Sachs Group Inc−224K sh−$21.7M
CWST institutional ownership FAQ
Who owns the most CWST stock?
In Q2 2026 13F filings the largest holder of CWST was BlackRock, Inc., followed by Wasatch Advisors LP and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of CWST is owned by institutions?
419 funds reported holding 77.3M CWST shares at Jun 30, 2026.
Are hedge funds buying CWST?
In Q2 2026, 227 funds bought CWST (60 of them new positions) and 179 sold (53 sold out completely). Among well known investors, 2 added and 1 cut. Our fund sentiment for CWST is strongly bullish.
What is CWST's institutional put/call ratio?
Too few option positions were reported for a meaningful ratio.
How current is this CWST ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.