CWST Institutional Ownership & Shareholders
CASELLA WASTE SYSTEMS INC-A (CWST) is currently held by 399 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $7.16B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of CWST tracked by InsiderSet, reporting ownership valued at approximately $910.56M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $876.38M, representing an estimated loss of -3.75% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 41% of the total disclosed CWST value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in CASELLA WASTE SYSTEMS INC-A (CWST).
This page ranks the largest institutional CWST shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
399
Total Reported Value
$7.16B
Largest Holder
Blackrock, Inc.
Largest Position
$910.56M
Insider Transactions (90d)
5
Latest Filing Quarter
Q2 2026
New Institutional Positions
46
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 9,390,112 | $910,559,124 | $876,379,153 | -$34,179,971 | -3.75% | |
| Vanguard Portfolio Management Llc | 0.02% | 3,448,748 | $334,425,094 | $321,871,651 | -$12,553,443 | -3.75% | |
| Vanguard Capital Management Llc | 0.01% | 2,823,033 | $273,749,510 | $263,473,670 | -$10,275,840 | -3.75% | |
| Wasatch Advisors Lp | 1.82% | 3,056,089 | $245,556,751 | $285,224,786 | +$39,668,035 | +16.15% | |
| State Street Corp | 0.01% | 2,520,170 | $244,364,046 | $235,207,466 | -$9,156,580 | -3.75% | |
| T. Rowe Price Investment Management, Inc. | 0.13% | 2,078,022 | $201,506,000 | $193,941,793 | -$7,564,207 | -3.75% | |
| Capital International Investors | 0.04% | 2,054,399 | $199,215,071 | $191,737,059 | -$7,478,012 | -3.75% | |
| Capital Research Global Investors | 0.03% | 2,028,646 | $196,717,803 | $189,333,531 | -$7,384,272 | -3.75% | |
| Geode Capital Management, Llc | 0.01% | 1,647,147 | $159,750,843 | $153,728,230 | -$6,022,613 | -3.77% | |
| Jpmorgan Chase & Co | 0.01% | 1,544,116 | $145,852,952 | $144,112,346 | -$1,740,606 | -1.19% | |
| Invesco Ltd. | 0.01% | 1,459,009 | $141,480,102 | $136,169,310 | -$5,310,792 | -3.75% | |
| Conestoga Capital Advisors, Llc | 4.17% | 1,720,853 | $138,270,539 | $160,607,210 | +$22,336,671 | +16.15% | |
| Earnest Partners Llc | 0.49% | 1,399,698 | $135,728,715 | $130,633,814 | -$5,094,901 | -3.75% | |
| Wellington Management Group Llp | 0.02% | 1,292,101 | $125,295,034 | $120,591,786 | -$4,703,248 | -3.75% | |
| Clearbridge Investments, Llc | 0.10% | 1,219,835 | $118,287,415 | $113,847,201 | -$4,440,214 | -3.75% | |
| Morgan Stanley | 0.01% | 1,213,469 | $117,670,359 | $113,253,062 | -$4,417,297 | -3.75% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,184,196 | $114,818,654 | $110,521,013 | -$4,297,641 | -3.74% | |
| Silvercrest Asset Management Group Llc | 0.75% | 1,181,941 | $114,613,175 | $110,310,554 | -$4,302,621 | -3.75% | |
| Neuberger Berman Group Llc | 0.08% | 1,045,409 | $102,387,358 | $97,568,022 | -$4,819,336 | -4.71% | |
| Pictet Asset Management Holding Sa | 0.10% | 1,052,330 | $102,034,062 | $98,213,959 | -$3,820,103 | -3.74% | |
| Bamco Inc | 0.14% | 965,239 | $93,599,226 | $90,085,756 | -$3,513,470 | -3.75% | |
| Geneva Capital Management Llc | 2.03% | 911,153 | $88,354,468 | $85,037,909 | -$3,316,559 | -3.75% | |
| American Century Companies Inc | 0.04% | 862,452 | $83,632,212 | $80,492,645 | -$3,139,567 | -3.75% | |
| Goldman Sachs Group Inc | 0.01% | 826,971 | $80,191,379 | $77,181,203 | -$3,010,176 | -3.75% | |
| Westfield Capital Management Co Lp | 0.26% | 812,525 | $78,790,549 | $75,832,958 | -$2,957,591 | -3.75% | |
| Bank Of America Corp | 0.01% | 808,261 | $78,377,069 | $75,434,999 | -$2,942,070 | -3.75% | |
| Ubs Group Ag | 0.01% | 803,537 | $77,918,983 | $74,994,108 | -$2,924,875 | -3.75% | |
| Northern Trust Corp | 0.01% | 771,245 | $74,787,627 | $71,980,296 | -$2,807,331 | -3.75% | |
| Voya Investment Management Llc | 0.06% | 739,652 | $71,724,054 | $69,031,721 | -$2,692,333 | -3.75% | |
| Charles Schwab Investment Management Inc | 0.01% | 719,450 | $69,765,067 | $67,146,269 | -$2,618,799 | -3.75% | |
| Brown Advisory Inc | 0.10% | 670,239 | $64,993,066 | $62,553,406 | -$2,439,660 | -3.75% | |
| Schroder Investment Management Group | 0.05% | 677,461 | $63,871,023 | $63,227,435 | -$643,588 | -1.01% | |
| Ameriprise Financial Inc | 0.01% | 634,591 | $61,536,268 | $59,226,378 | -$2,309,890 | -3.75% | |
| Nomura Asset Management International Inc. | 0.09% | 624,506 | $60,558,000 | $58,285,145 | -$2,272,855 | -3.75% | |
| Allspring Global Investments Holdings, Llc | 0.09% | 622,064 | $59,320,023 | $58,057,233 | -$1,262,790 | -2.13% | |
| Bnp Paribas Asset Management Holding S.A. | 0.06% | 605,177 | $58,684,013 | $56,481,169 | -$2,202,844 | -3.75% | |
| Loomis Sayles & Co L P | 0.07% | 573,873 | $55,648,465 | $53,559,567 | -$2,088,898 | -3.75% | |
| Select Equity Group, L.P. | 0.29% | 563,031 | $54,597,116 | $52,547,683 | -$2,049,433 | -3.75% | |
| Sei Investments Co | 0.05% | 557,129 | $54,023,694 | $51,996,850 | -$2,026,844 | -3.75% | |
| Timessquare Capital Management, Llc | 0.72% | 503,732 | $48,846,892 | $47,013,308 | -$1,833,584 | -3.75% | |
| London Co Of Virginia | 0.28% | 503,144 | $48,781,036 | $46,958,430 | -$1,822,606 | -3.74% | |
| Norges Bank | 0.00% | 476,323 | $46,189,041 | $44,455,226 | -$1,733,815 | -3.75% | |
| Citadel Advisors Llc | 0.03% | 455,585 | $44,178,077 | $42,519,748 | -$1,658,329 | -3.75% | |
| Vanguard Fiduciary Trust Co | 0.01% | 449,960 | $43,632,621 | $41,994,767 | -$1,637,854 | -3.75% | |
| Df Dent & Co Inc | 0.82% | 446,270 | $43,274,812 | $41,650,379 | -$1,624,433 | -3.75% | |
| Point72 Asset Management, L.P. | 0.07% | 445,541 | $43,204,111 | $41,582,342 | -$1,621,769 | -3.75% | |
| Bank Of New York Mellon Corp | 0.01% | 436,500 | $42,327,398 | $40,738,545 | -$1,588,853 | -3.75% | |
| Granahan Investment Management, Llc | 1.51% | 436,289 | $42,306,944 | $40,718,852 | -$1,588,092 | -3.75% | |
| Segall Bryant & Hamill, Llc | 0.50% | 432,823 | $41,970,846 | $40,395,371 | -$1,575,475 | -3.75% | |
| Fred Alger Management, Llc | 0.13% | 394,596 | $38,263,974 | $36,827,645 | -$1,436,329 | -3.75% |
Frequently asked questions about CWST
Who are the largest institutional holders of CWST?
The largest institutional holders of CWST reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, Vanguard Capital Management Llc, Wasatch Advisors Lp, and State Street Corp. InsiderSet ranks institutional holders by their latest reported CWST position.
What is CWST institutional ownership?
This page tracks CWST positions reported by institutional investment managers through SEC Form 13F. CASELLA WASTE SYSTEMS INC-A (CWST) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own CWST?
InsiderSet currently tracks 399 institutional managers reporting CWST holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of CWST shareholders.
How much CWST stock do institutions own?
Institutional investment managers disclosed approximately $7.16B in CWST holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was CWST institutional ownership last updated?
The latest CWST institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional CWST holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its CWST position after the reporting date.
Are institutions buying or selling CWST?
Institutional buying and selling can be analyzed by comparing CWST positions across consecutive 13F reporting periods. InsiderSet's CWST Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View CWST ownership changes.
How has CWST institutional ownership changed over time?
InsiderSet tracks CWST institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.