Institutional Ownership
Casella Waste Sys Inc
CUSIP 147448104CL ACWSTQ1 2026
13D / 13G Filings
25
Schedule 13D/13G on record
Beneficial Filers
10
Distinct reporting persons
Largest Stake
14.3%
Max % of class reported
Institutional Holders
394
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
25 filings · latest Jan 8, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Jan 8, 2026 | Blackrock, Inc. | 13G/A | 14.3% | 8.93M | SEC |
| 2 | Jan 7, 2026 | The Vanguard Group | 13G/A | 10.5% | 6.57M | SEC |
| 3 | Aug 14, 2025 | Wasatch Advisors LP | 13G | 5.5% | 3.41M | SEC |
| 4 | Jan 10, 2025 | Conestoga Capital Advisors | 13G/A | 5.5% | 3.43M | SEC |
| 5 | Nov 14, 2024 | William Blair Investment Management, LLC | 13G/A | 4.3% | 2.65M | SEC |
| 6 | Feb 13, 2024 | Vanguard Group Inc | 13G/A | 9.6% | 5.48M | SEC |
| 7 | Feb 12, 2024 | William Blair Investment Management, LLC | 13G | 5.1% | 2.90M | SEC |
| 8 | Jan 26, 2024 | Blackrock Inc. | 13G/A | 7.2% | 4.13M | SEC |
| 9 | Jul 10, 2023 | Earnest Partners LLC | 13G/A | 3.9% | 2.22M | SEC |
| 10 | Feb 14, 2023 | Earnest Partners LLC | 13G/A | 5.5% | 2.77M | SEC |
15 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Casella Waste Sys Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Blackrock, Inc. | 9.05M | $717.81M |
| 2 | Conestoga Capital Advisors, LLC | 2.80M | $222.51M |
| 3 | Wasatch Advisors LP | 2.58M | $204.87M |
| 4 | State Street Corp | 2.39M | $189.56M |
| 5 | Capital Research Global Investors | 2.33M | $184.88M |
| 6 | Capital International Investors | 1.95M | $154.94M |
| 7 | Invesco Ltd. | 1.65M | $131.18M |
| 8 | Geode Capital Management, LLC | 1.55M | $123.25M |
| 9 | Jpmorgan Chase & Co | 1.36M | $106.51M |
| 10 | William Blair Investment Management, LLC | 1.26M | $99.74M |