CWST Casella Waste Systems Inc.
Casella Waste Systems Inc. (CWST) Institutional Ownership
What the institutions did with CWST last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 9.4M | 12.2% |
| WASATCH ADVISORS LP | 3.5M | 4.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.4M | 4.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.8M | 3.7% |
| STATE STREET CORP | 2.5M | 3.3% |
| Conestoga Capital Advisors, LLC | 2.3M | 3.0% |
| T. Rowe Price Investment Management, Inc. | 2.1M | 2.7% |
| Capital International Investors | 2.1M | 2.7% |
| Capital Research Global Investors | 2.0M | 2.6% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6M | 2.1% |
| JPMORGAN CHASE & CO | 1.5M | 2.0% |
| Invesco Ltd. | 1.5M | 1.9% |
| NEUBERGER BERMAN GROUP LLC | 1.4M | 1.9% |
| EARNEST PARTNERS LLC | 1.4M | 1.8% |
| WELLINGTON MANAGEMENT GROUP LLP | 1.3M | 1.7% |
| Clearbridge Investments, LLC | 1.2M | 1.6% |
| MORGAN STANLEY | 1.2M | 1.6% |
| DIMENSIONAL FUND ADVISORS LP | 1.2M | 1.5% |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 1.2M | 1.5% |
| Pictet Asset Management Holding SA | 1.1M | 1.4% |
| BAMCO INC /NY/ | 965.2K | 1.2% |
| GENEVA CAPITAL MANAGEMENT LLC | 911.2K | 1.2% |
| AMERICAN CENTURY COMPANIES INC | 862.5K | 1.1% |
| GOLDMAN SACHS GROUP INC | 827.0K | 1.1% |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 812.5K | 1.1% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 1.3M | 268.3K | -988.8K |
| WASATCH ADVISORS LP | Increased | 2.6M | 3.5M | +949.4K |
| AMERICAN CENTURY COMPANIES INC | Increased | 56.6K | 862.5K | +805.9K |
| NEUBERGER BERMAN GROUP LLC | Increased | 953.8K | 1.4M | +480.7K |
| Conestoga Capital Advisors, LLC | Reduced | 2.8M | 2.3M | -468.3K |
| CITADEL ADVISORS LLC | Increased | 34.7K | 455.6K | +420.8K |
| Woodline Partners LP | Sold Out | 415.4K | 0 | -415.4K |
| Capital World Investors | Sold Out | 392.1K | 0 | -392.1K |
| T. Rowe Price Investment Management, Inc. | Increased | 1.7M | 2.1M | +378.5K |
| BANK OF AMERICA CORP /DE/ | Increased | 438.9K | 808.3K | +369.4K |
| BlackRock, Inc. | Increased | 9.0M | 9.4M | +342.8K |
| Global Alpha Capital Management Ltd. | Sold Out | 325.8K | 0 | -325.8K |
| Capital Research Global Investors | Reduced | 2.3M | 2.0M | -301.5K |
| EARNEST PARTNERS LLC | Increased | 1.1M | 1.4M | +266.6K |
| AustralianSuper Pty Ltd | New | 0 | 263.8K | +263.8K |
| Zimmer Partners, LP | Sold Out | 257.7K | 0 | -257.7K |
| GENEVA CAPITAL MANAGEMENT LLC | Reduced | 1.2M | 911.2K | -251.9K |
| BAMCO INC /NY/ | Increased | 718.5K | 965.2K | +246.8K |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Increased | 448.0K | 677.5K | +229.4K |
| GOLDMAN SACHS GROUP INC | Reduced | 1.1M | 827.0K | -223.8K |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | Reduced | 835.4K | 624.5K | -210.9K |
| THORNBURG INVESTMENT MANAGEMENT INC | Sold Out | 203.2K | 0 | -203.2K |
| Invesco Ltd. | Reduced | 1.7M | 1.5M | -194.4K |
| Granahan Investment Management, LLC | Increased | 250.3K | 436.3K | +186.0K |
| JPMORGAN CHASE & CO | Increased | 1.4M | 1.5M | +185.2K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.