Latest Period
Q1 2026
Security Snapshot
CASELLA WASTE SYSTEMS INC - CL A (CWST) Institutional Ownership
CUSIP: 147448104
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
403
Shares (Excl. Options)
74,603,626
Price
$79.34
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- Security type / class
- Equity / CL A
- Symbol
- CWST on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 74,603,626
- Total 13F value
- $5,920,698,797
- Portfolio coverage rank
- 0.01%
- Share change
- -2,485,297
- Value change
- -$221,064,143
- Number of holders
- 403
- Shares outstanding
- 63,064,179
- SEC-reported price per share
- $96.97
- Insider filing price
- $96.97
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- CWST - CASELLA WASTE SYSTEMS INC - CL A is tracked under CUSIP 147448104.
- 403 institutions reported positions in Q1 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 403 to 18 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $5,920,698,797 to $352,946,367.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 403 institutions filings for Q1 2026.
Security key
147448104
Latest holder period
Q1 2026
13F holders
403
13D/G owners
4
CIK / CUSIP context first
Open Q1 2026 holders
CWST full holder history
CASELLA WASTE SYSTEMS INC SEC filings
CASELLA WASTE SYSTEMS INC company facts
CASELLA WASTE SYSTEMS INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 147448104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
CWST
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | $874,479,914 | 8,928,731 | BlackRock, Inc. | 31 Dec 2025 | |||
| VANGUARD GROUP INC | 11% | $643,945,020 | 6,574,893 | The Vanguard Group | 31 Dec 2025 | |||
| WASATCH ADVISORS LP | 5.6% | +38% | $342,458,670 | +$92,060,797 | 3,531,594 | +37% | Wasatch Advisors LP | 30 Jun 2026 |
| Conestoga Capital Advisors, LLC | 5.5% | $396,150,082 | 3,432,843 | Conestoga Capital Advisors | 31 Dec 2024 |
As of 31 Mar 2026, 403 institutional investors reported holding 74,603,626 shares of CASELLA WASTE SYSTEMS INC - CL A (CWST). This represents 118% of the company’s total 63,064,179 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
76%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | 9,047,272 | -0.11% | 0.01% | $717,810,531 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.3% | 3,353,241 | 0% | 0.01% | $266,046,141 |
| Conestoga Capital Advisors, LLC | 4.4% | 2,804,475 | +0.98% | 4.4% | $222,507,046 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.4% | 2,798,927 | 0% | 0.01% | $222,066,868 |
| WASATCH ADVISORS LP | 4.1% | 2,582,220 | -31% | 1.4% | $204,873,335 |
| STATE STREET CORP | 3.8% | 2,389,197 | +3.6% | 0.01% | $189,558,890 |
| Capital Research Global Investors | 3.7% | 2,330,165 | -6.3% | 0.03% | $184,875,291 |
| Capital International Investors | 3.1% | 1,952,820 | -2.3% | 0.04% | $154,936,739 |
| T. Rowe Price Investment Management, Inc. | 2.7% | 1,699,490 | -0.48% | 0.09% | $134,838,000 |
| Invesco Ltd. | 2.6% | 1,653,438 | -39% | 0.02% | $131,183,771 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.5% | 1,553,163 | +0.93% | 0.01% | $123,250,103 |
| JPMORGAN CHASE & CO | 2.2% | 1,358,874 | -7.1% | 0.01% | $106,508,544 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2% | 1,257,092 | -14% | 0.33% | $99,737,679 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | 2% | 1,252,042 | -7.2% | 0.72% | $99,337,333 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.9% | 1,211,802 | -7.3% | 0.02% | $96,144,371 |
| MORGAN STANLEY | 1.9% | 1,195,293 | -12% | 0.01% | $94,834,701 |
| GENEVA CAPITAL MANAGEMENT LLC | 1.8% | 1,163,087 | -8.1% | 2% | $92,279,363 |
| Clearbridge Investments, LLC | 1.8% | 1,141,729 | +52% | 0.08% | $90,584,766 |
| EARNEST PARTNERS LLC | 1.8% | 1,133,077 | -2.5% | 0.37% | $89,898,329 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 1,067,132 | +3% | 0.02% | $84,662,540 |
| GOLDMAN SACHS GROUP INC | 1.7% | 1,050,770 | +17% | 0.01% | $83,368,052 |
| NEUBERGER BERMAN GROUP LLC | 1.5% | 953,777 | -8.8% | 0.06% | $75,672,667 |
| UBS Group AG | 1.5% | 932,817 | +11% | 0.01% | $74,009,701 |
| Pictet Asset Management Holding SA | 1.5% | 924,375 | -6.7% | 0.08% | $73,335,981 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 1.3% | 835,425 | -11% | 0.11% | $66,283,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q1 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 3,639,745 | $352,946,367 | +$90,456,458 | $96.97 | 18 |
| 2026 Q1 | 74,603,626 | $5,920,698,797 | -$221,064,143 | $79.34 | 403 |
| 2025 Q4 | 77,460,588 | $7,587,958,882 | +$967,785,387 | $97.94 | 392 |
| 2025 Q3 | 66,377,932 | $6,294,041,340 | +$73,532,668 | $94.88 | 386 |
| 2025 Q2 | 65,438,323 | $7,549,760,585 | +$65,833,549 | $115.38 | 387 |
| 2025 Q1 | 64,738,257 | $7,219,647,011 | +$4,577,568 | $111.51 | 367 |
| 2024 Q4 | 65,127,232 | $6,889,761,758 | +$120,091,578 | $105.81 | 342 |
| 2024 Q3 | 64,015,497 | $6,371,276,477 | +$403,630,244 | $99.49 | 342 |
| 2024 Q2 | 59,431,643 | $5,897,740,159 | +$129,539,608 | $99.22 | 310 |
| 2024 Q1 | 58,315,369 | $5,765,883,359 | +$101,656,355 | $98.87 | 308 |
| 2023 Q4 | 57,556,798 | $4,920,281,685 | +$11,630,175 | $85.46 | 307 |
| 2023 Q3 | 57,443,474 | $4,383,109,169 | +$114,397,223 | $76.30 | 296 |
| 2023 Q2 | 55,773,711 | $5,043,757,708 | +$464,661,179 | $90.45 | 315 |
| 2023 Q1 | 50,655,221 | $4,186,998,515 | +$61,650,233 | $82.66 | 262 |
| 2022 Q4 | 50,385,224 | $3,996,098,320 | -$34,288,702 | $79.31 | 269 |
| 2022 Q3 | 50,812,708 | $3,881,940,157 | +$20,432,104 | $76.39 | 273 |
| 2022 Q2 | 50,187,812 | $3,647,952,594 | +$52,994,788 | $72.68 | 258 |
| 2022 Q1 | 49,583,078 | $4,345,553,496 | +$85,127,456 | $87.65 | 265 |
| 2021 Q4 | 48,690,713 | $4,154,272,154 | -$326,784,571 | $85.42 | 274 |
| 2021 Q3 | 50,052,773 | $3,802,867,611 | +$65,807,840 | $75.94 | 230 |
| 2021 Q2 | 49,240,434 | $3,124,710,856 | +$33,972,996 | $63.43 | 229 |
| 2021 Q1 | 48,700,728 | $3,097,445,679 | +$16,882,308 | $63.57 | 214 |
| 2020 Q4 | 48,606,061 | $3,010,613,615 | +$170,675,439 | $61.95 | 217 |
| 2020 Q3 | 45,834,847 | $2,560,435,065 | +$8,978,057 | $55.85 | 198 |
| 2020 Q2 | 45,720,261 | $2,382,751,697 | +$20,650,311 | $52.12 | 184 |