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CWST · Casella Waste Systems Inc · Shareholders & Ownership

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$93.07 +6.53 (+7.55%) At close · Oct 20
Market Cap
$5.92B
Shares
63.64M
Volume · Oct 20 1.46M Avg daily vol (3M) 579.45K

Every disclosed holder of CWST in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns CWST

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group Shares % Out
Institutional (13F) 76,804,114 120.69%
Insiders (Forms 3, 4, 5) 0 0.00%
13D/G-only blocks 0 0.00%
Remaining 13,164,068 -20.69%
Registered funds (N-PORT, not summed) 38,976,551 61.25%

Shares outstanding: 63,640,046, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of CWST

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
9,390,112
1.1
iShares Core S&P Small-Cap ETF
Fund S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
3,772,642
1.2
iShares Russell 2000 ETF
Fund S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,641,376
1.3
iShares Russell 2000 Growth ETF
Fund S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
590,330
1.4
iShares S&P Small-Cap 600 Growth ETF
Fund S000004314 · Registered fund · Jun 30, 2026
iShares Trust, not summed
562,741
1.5
Master Small Cap Index Series
Fund S000002716 · Registered fund · Jun 30, 2026
Quantitative Master Series LLC, not summed
117,901
2
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,448,748
3
WASATCH ADVISORS LP
13F CIK 814133 · Registered investment adviser · Sep 30, 2026
3,056,089
3.1
WASATCH ADVISORS LP
13G CIK 814133 · Registered investment adviser · Sep 30, 2026
Rule 13d-1(b), qualified institution, not summed
3,056,089
3.2
Wasatch Core Growth Fund
Fund S000000877 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
1,491,620
3.3
Wasatch Ultra Growth Fund
Fund S000000879 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
176,212
3.4
Wasatch Global Opportunities Fund
Fund S000022592 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
39,512
3.5
Wasatch Long/Short Alpha Fund
Fund S000073482 · Registered fund · Jun 30, 2026
WASATCH FUNDS TRUST, not summed
17,343
4
SMALLCAP World Fund Inc
Fund S000009599 · Registered fund · Jun 30, 2026
SMALLCAP World Fund Inc, not summed
3,036,412
5
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,823,033
6
STATE STREET CORP
13F CIK 93751 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
2,520,170
6.1
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
574,056
6.2
State Street(R) SPDR(R) S & P 600(TM) Small Cap Growth ETF
Fund S000006990 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
355,334
6.3
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
21,790
6.4
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
12,312
6.5
State Street(R) SPDR(R) US Small Cap Low Volatility Index ETF
Fund S000039795 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
8,670
7
Conestoga Capital Advisors, LLC
13F CIK 1163744 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,336,156
7.1
CONESTOGA SMALL CAP FUND
Fund S000004756 · Registered fund · Jun 30, 2026
Conestoga Funds, not summed
1,059,740
7.2
CONESTOGA SMID CAP FUND
Fund S000043859 · Registered fund · Jun 30, 2026
Conestoga Funds, not summed
245,440
8
T. Rowe Price Investment Management, Inc.
13F CIK 1897612 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,078,022
9
Capital International Investors
13F CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,054,399
10
Capital Research Global Investors
13F CIK 1422848 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,028,646
11
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,988,602
12
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,647,147
13
JPMORGAN CHASE & CO
13F CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
1,544,116
14
Invesco Ltd.
13F CIK 914208 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,459,009
14.1
Invesco Main Street Small Cap Fund
Fund S000064650 · Registered fund · Jun 30, 2026
AIM Growth Series (Invesco Growth Series), not summed
387,000
14.2
Invesco Main Street Mid Cap Fund
Fund S000064651 · Registered fund · Jun 30, 2026
AIM Growth Series (Invesco Growth Series), not summed
304,767
14.3
Invesco V.I. Main Street Small Cap Fund
Fund S000064664 · Registered fund · Jun 30, 2026
AIM Variable Insurance Funds (Invesco Variable Insurance Funds), not summed
215,029
14.4
Invesco S&P SmallCap Industrials ETF
Fund S000028300 · Registered fund · May 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
37,851
14.5
Invesco RAFI US 1500 Small-Mid ETF
Fund S000013120 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
34,069
15
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
1,436,720
16
NEUBERGER BERMAN GROUP LLC
13F CIK 1465109 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,434,463
16.1
Neuberger Genesis Fund
Fund S000007841 · Registered fund · May 31, 2026
NEUBERGER BERMAN EQUITY FUNDS, not summed
685,658
16.2
Neuberger Small-Mid Cap ETF
Fund S000084236 · Registered fund · May 31, 2026
Neuberger Berman ETF Trust, not summed
24,970
17
EARNEST PARTNERS LLC
13F CIK 1102578 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,399,698
18
WELLINGTON MANAGEMENT GROUP LLP
13F CIK 902219 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,292,101
19
Clearbridge Investments, LLC
13F CIK 1348883 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,219,835
20
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
1,213,469
20.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
178
21
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,184,196
21.1
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
265,320
21.2
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
203,948
21.3
Dimensional U.S. Core Equity 2 ETF
Fund S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
88,077
21.4
U.S. Small Cap Growth Portfolio
Fund S000039439 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
61,180
21.5
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
55,503
22
SILVERCREST ASSET MANAGEMENT GROUP LLC
13F CIK 1232395 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,181,941
23
Pictet Asset Management Holding SA
13F CIK 1993888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,052,330
24
BAMCO INC /NY/
13F CIK 1017918 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
965,239
24.1
BARON DISCOVERY FUND
Fund S000042178 · Registered fund · Jun 30, 2026
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), not summed
405,000
24.2
BARON SMALL CAP FUND
Fund S000000584 · Registered fund · Jun 30, 2026
BARON INVESTMENT FUNDS TRUST (f/k/a BARON ASSET FUND), not summed
225,000
25
Growth Fund
Fund S000008791 · Registered fund · Jun 30, 2026
AMERICAN FUNDS INSURANCE SERIES, not summed
962,515
26
GENEVA CAPITAL MANAGEMENT LLC
13F CIK 1009232 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
911,153
27
AMERICAN CENTURY COMPANIES INC
13F CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
862,452
27.1
Global Small Cap Fund
Fund S000053103 · Registered fund · May 31, 2026
American Century World Mutual Funds, Inc., not summed
4,842
28
VANGUARD SMALL-CAP GROWTH INDEX FUND
Fund S000002846 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
829,007
29
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
826,971
29.1
Multi-Manager U.S. Small Cap Equity Fund
Fund S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
27,037
29.2
Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF
Fund S000048296 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust, not summed
4,766
29.3
Goldman Sachs MarketBeta U.S. 1000 Equity ETF
Fund S000075322 · Registered fund · May 31, 2026
Goldman Sachs ETF Trust II, not summed
2,130
29.4
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Jun 30, 2026
GOLDMAN SACHS TRUST, not summed
2,049
30
WESTFIELD CAPITAL MANAGEMENT CO LP
13F CIK 1177719 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
812,525
31
BANK OF AMERICA CORP /DE/
13F CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
808,261
32
UBS Group AG
13F CIK 1610520 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
803,537
33
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
771,245
33.1
Small Cap Index Fund
Fund S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
32,338
33.2
FlexShares STOXX Global Broad Infrastructure Index Fund
Fund S000042071 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
26,709
33.3
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
5,331
33.4
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
1,738
34
VOYA INVESTMENT MANAGEMENT LLC
13F CIK 1068837 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
739,652
35
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
719,450
35.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
299,752
35.2
Schwab Small-Cap Index Fund
Fund S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
155,310
35.3
Schwab Fundamental U.S. Small Company ETF
Fund S000040878 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
55,010
35.4
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
38,066
35.5
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
37,454
36
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
718,712
37
SCHRODER INVESTMENT MANAGEMENT GROUP
13F CIK 1086619 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
677,461
38
BROWN ADVISORY INC
13F CIK 1345929 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
670,239
38.1
Brown Advisory Small-Cap Growth Fund
Fund S000038483 · Registered fund · Jun 30, 2026
Brown Advisory Funds, not summed
115,624
39
AMERIPRISE FINANCIAL INC
13F CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
634,591
39.1
Columbia Small Cap Index Fund
Fund S000010827 · Registered fund · May 31, 2026
COLUMBIA FUNDS SERIES TRUST, not summed
93,305
39.2
Variable Portfolio - Partners Small Cap Growth Fund
Fund S000028697 · Registered fund · Jun 30, 2026
Columbia Funds Variable Series Trust II, not summed
22,437
40
NOMURA ASSET MANAGEMENT INTERNATIONAL INC.
13F CIK 921739 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
624,506
40.1
Nomura Small Cap Core Fund
Fund S000002400 · Registered fund · May 29, 2026
Delaware Group Equity Funds V, not summed
561,033
40.2
Nomura Smid Cap Core Fund
Fund S000024831 · Registered fund · Jun 30, 2026
IVY FUNDS, not summed
21,362
40.3
Nomura VIP Smid Cap Core Series
Fund S000006234 · Registered fund · Jun 30, 2026
Ivy Variable Insurance Portfolios, not summed
11,763
40.4
Nomura VIP Opportunity Series
Fund S000065938 · Registered fund · Jun 30, 2026
Delaware VIP Trust, not summed
5,103
41
Allspring Global Investments Holdings, LLC
13F CIK 1890906 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
622,064
41.1
Allspring SMID Cap Growth Fund
Fund S000007345 · Registered fund · Jun 30, 2026
ALLSPRING FUNDS TRUST, not summed
154,558
41.2
Allspring Emerging Growth Fund
Fund S000015703 · Registered fund · Jul 31, 2026
ALLSPRING FUNDS TRUST, not summed
76,581
41.3
Allspring VT Small Cap Growth Fund
Fund S000007228 · Registered fund · Jun 30, 2026
Allspring VARIABLE TRUST, not summed
72,826
41.4
Allspring VT Discovery SMID Cap Growth Fund
Fund S000007218 · Registered fund · Jun 30, 2026
Allspring VARIABLE TRUST, not summed
32,420
42
BNP PARIBAS ASSET MANAGEMENT Holding S.A.
13F CIK 1520354 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
605,177
43
LOOMIS SAYLES & CO L P
13F CIK 312348 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
573,873
43.1
Loomis Sayles Small Cap Growth Fund
Fund S000006705 · Registered fund · Jun 30, 2026
LOOMIS SAYLES FUNDS II, not summed
235,688
43.2
Loomis Sayles Small/Mid Cap Growth Fund
Fund S000049859 · Registered fund · Jun 30, 2026
LOOMIS SAYLES FUNDS II, not summed
18,400
44
Select Equity Group, L.P.
13F CIK 1592643 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
563,031
45
SEI INVESTMENTS CO
13F CIK 350894 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
557,129
45.1
SIIT SMALL/MID CAP FUND
Fund S000006770 · Registered fund · May 31, 2026
SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
11,588
45.2
SIIT EXTENDED MARKET INDEX FUND
Fund S000035814 · Registered fund · May 31, 2026
SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
9,891
45.3
SIIT SMALL CAP FUND
Fund S000006772 · Registered fund · May 31, 2026
SEI INSTITUTIONAL INVESTMENTS TRUST, not summed
5,065
45.4
New Covenant Growth Fund
Fund S000024941 · Registered fund · Jun 30, 2026
NEW COVENANT FUNDS, not summed
794
46
FRANKLIN RESOURCES INC
13F CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
518,503
46.1
Putnam Small Cap Growth Fund
Fund S000000777 · Registered fund · Jun 30, 2026
Putnam Funds Trust, not summed
280,552
46.2
Putnam Small Cap Value Fund
Fund S000003854 · Registered fund · May 31, 2026
Putnam Investment Funds, not summed
35,000
46.3
Putnam VT Small Cap Value Fund
Fund S000003888 · Registered fund · Jun 30, 2026
Putnam Variable Trust, not summed
12,400
46.4
Putnam VT Small Cap Growth Fund
Fund S000003883 · Registered fund · Jun 30, 2026
Putnam Variable Trust, not summed
4,301
46.5
Putnam Sustainable Future ETF
Fund S000071711 · Registered fund · May 29, 2026
Putnam ETF Trust, not summed
714
47
Harbor Small Cap Value Fund
Fund S000000689 · Registered fund · Jul 31, 2026
HARBOR FUNDS, not summed
517,362
48
TimesSquare Capital Management, LLC
13F CIK 1313816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
503,732
49
LONDON CO OF VIRGINIA
13F CIK 1259887 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
503,144
50
NORGES BANK
13F CIK 1374170 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
476,323

38 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 599 holders

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Key facts CIK 911177 CUSIP 147448104 13F (30d) 42 filings 42 filers Visit website Investor relations