Casella Waste Systems Inc (CWST) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

63,575,000Shares Outstanding

432,657Shares held by institutions

$44,944,409Value of institutional holdings

113.90%Institutional ownership %

19.59%Shares Changed QoQ

373No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Casella Waste Systems Inc (NASDAQ:CWST) is held by 373 institutional firms.

These investors collectively held 113.9% of the company's total shares outstanding in December 2025, up from 104.4% in September 2025.
Institutional share ownership changed by 19.59% QoQ, while the number of institutional owners saw an increase of 9.71% YoY.
Among the 373 institutional holders of Casella Waste Systems, 234 added to their stakes while 90 trimmed their positions and 49 held steady.
The total number of shares held by institutions in Casella Waste Systems increased to 72.41Mn as of December 2025, a net change of up by 11.86Mn shares quarter on quarter, and up 6.88Mn shares year over year.
As of December 31, 2025, BlackRock, Inc. held Casella Waste Systems's largest shareholding position with over 9.06Mn shares, representing 14.25% of total outstanding shares.
Among the most significant buyers of Casella Waste Systems during December 2025 were BlackRock, Inc. (4.49Mn), Pictet Asset Management Holding SA (981.62K), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (943.15K), STATE STREET CORP (871.76K), UBS Group AG (730.13K).
Leading sellers of Casella Waste Systems stock in December 2025 included T. Rowe Price Investment Management, Inc. (1.44Mn), Zimmer Partners, LP (354.81K), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (341.66K), AMERIPRISE FINANCIAL INC (302.55K), Global Alpha Capital Management Ltd. (245.63K).
The top 10 institutional holders of Casella Waste Systems for the quarter ending December 2025 included BlackRock, Inc. (9.06Mn), VANGUARD GROUP INC (6.57Mn), WASATCH ADVISORS LP (3.77Mn), Conestoga Capital Advisors, LLC (2.78Mn), Capital Research Global Investors (2.49Mn), STATE STREET CORP (2.31Mn), Capital International Investors (2.00Mn), WESTFIELD CAPITAL MANAGEMENT CO LP (1.67Mn), GEODE CAPITAL MANAGEMENT, LLC (1.54Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (1.47Mn).

373 Institutional Holders

432,657 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	9,057,647	4,491,501	98.37%	$887,105,957.00
VANGUARD GROUP INC	31 Dec, 2025	6,574,893	581,310	9.70%	$643,945,020.00
WASATCH ADVISORS LP	31 Dec, 2025	3,765,442	56,914	1.53%	$368,787,389.00
Conestoga Capital Advisors, LLC	31 Dec, 2025	2,777,327	-98,734	-3.43%	$272,011,406.00
Capital Research Global Investors	31 Dec, 2025	2,488,034	477,216	23.73%	$243,678,050.00
STATE STREET CORP	31 Dec, 2025	2,306,780	871,761	60.75%	$225,926,033.00
Capital International Investors	31 Dec, 2025	1,998,409	41,447	2.12%	$195,724,177.00
WESTFIELD CAPITAL MANAGEMENT CO LP	31 Dec, 2025	1,665,226	17,319	1.05%	$163,092,234.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,538,803	5,510	0.36%	$150,732,667.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	1,468,206	-341,661	-18.88%	$143,796,096.00
JPMORGAN CHASE & CO	31 Dec, 2025	1,462,770	-193,443	-11.68%	$143,263,695.00
MORGAN STANLEY	31 Dec, 2025	1,362,854	521,088	61.90%	$133,478,240.00
SILVERCREST ASSET MANAGEMENT GROUP LLC	31 Dec, 2025	1,348,555	106,906	8.61%	$132,077,918.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	1,307,249	-83,386	-6.00%	$128,031,967.00
GENEVA CAPITAL MANAGEMENT LLC	31 Dec, 2025	1,265,324	8,909	0.71%	$123,925,878.00
EARNEST PARTNERS LLC	31 Dec, 2025	1,162,557	-32,646	-2.73%	$113,860,833.00
Neuberger Berman Group LLC	31 Dec, 2025	1,045,409	111,045	11.88%	$102,387,358.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,035,661	85,008	8.94%	$101,444,211.00
Pictet Asset Management Holding SA	31 Dec, 2025	990,651	981,617	10,865.81%	$97,039,592.00
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.	31 Dec, 2025	943,149	943,149	0.00%	$92,372,000.00

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