Casella Waste Systems Inc (CWST) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

63,591,000Shares Outstanding

78,281,593Shares held by institutions

$6,087,959,488Value of institutional holdings

123.10%Institutional ownership %

19.55%Shares Changed QoQ

384No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Casella Waste Systems Inc (NASDAQ:CWST) is held by 384 institutional investors per 13F filings through December 2025.

They owned 121.4% of outstanding stock in December 2025, up from 107.7% the prior quarter.
They increased total shares held in Casella Waste Systems by 18.29% from the prior quarter, while the number of investors in CWST increased 12.94% year over year.
Among the 384 funds, 240 bought more Casella Waste Systems shares, 95 sold down, and 49 held their ground.
Combined, these investors held 77.19Mn shares in CWST for December 2025, up by 11.93Mn shares quarter on quarter, and up 9.22Mn shares year over year.
Conestoga Capital Advisors, LLC is the top holder of Casella Waste Systems as of December 31, 2025, with 2.8Mn shares representing 4.41% of outstanding stock.
Leading buyers of Casella Waste Systems shares for the quarter ending December 2025 were RIVERBRIDGE PARTNERS LLC (173.2K), Boston Trust Walden Corp (73.12K), CONGRESS ASSET MANAGEMENT CO (64.94K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (40.53K), Conestoga Capital Advisors, LLC (27.15K).
Top sellers of CWST stock for the quarter ending December 2025 included WASATCH ADVISORS LP (1.18Mn), Pictet Asset Management Holding SA (66.28K), MOODY ALDRICH PARTNERS LLC (25.25K), Sterling Capital Management LLC (13.54K), OPPENHEIMER ASSET MANAGEMENT INC. (12.18K).
Per Business Quant, the top 10 investors in CWST for the quarter ending December 2025 include Conestoga Capital Advisors, LLC (2.8Mn), WASATCH ADVISORS LP (2.58Mn), Pictet Asset Management Holding SA (924.38K), Boston Trust Walden Corp (384.78K), RIVERBRIDGE PARTNERS LLC (173.2K), OPPENHEIMER ASSET MANAGEMENT INC. (72.02K), CONGRESS ASSET MANAGEMENT CO (64.94K), WEALTH ENHANCEMENT ADVISORY SERVICES, LLC (40.53K), State of Alaska, Department of Revenue (30.86K), SG Americas Securities, LLC (30.08K).

384 Institutional Holders

78,281,593 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
Invesco Ltd.	31 Dec, 2025	2,703,855	300,102	12.48%	$264,815,560.00
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
T. Rowe Price Investment Management, Inc.	31 Dec, 2025	1,971,106	263,907	15.46%	$193,051.00
Goldman Sachs Group Inc	31 Dec, 2025	1,798,770	912,195	102.89%	$176,171,534.00
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	-1,849,656	-55.84%	$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

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