ADDISON, TX
CECO ENVIRONMENTAL CORPCECO— Latest position per institution from SEC 13F filings
15
Institutional holders
35.20M
Total shares held
2.61B
Estimated value
1.76M
Avg. position size
FMR LLC
CIK 315066
Shares
4.52M
Value
410.55M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
4.32M
Value
392.36M
Filed
Jun 30, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
2.34M
Value
212.26M
Filed
Jun 30, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
2.32M
Value
66.92M
Filed
Jun 30, 2024
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
2.19M
Value
198.29M
Filed
Jun 30, 2026
T. ROWE PRICE INVESTMENT MANAGEMENT, INC.
CIK 1897612
Shares
2.15M
Value
195.45K
Filed
Jun 30, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
2.09M
Value
189.50M
Filed
Jun 30, 2026
VANGUARD GROUP INC
CIK 102909
Shares
1.78M
Value
106.57M
Filed
Dec 31, 2025
DRIEHAUS CAPITAL MANAGEMENT LLC
CIK 938206
Shares
1.56M
Value
141.60M
Filed
Jun 30, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.46M
Value
132.54M
Filed
Jun 30, 2026
DIVISADERO STREET CAPITAL MANAGEMENT, LP
CIK 1901865
Shares
1.33M
Value
120.67M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
1.26M
Value
114.76M
Filed
Jun 30, 2026
ACK ASSET MANAGEMENT LLC
CIK 1510940
Shares
1.20M
Value
27.38M
Filed
Mar 31, 2025
CAPITAL WORLD INVESTORS
CIK 1422849
Shares
1.16M
Value
105M
Filed
Jun 30, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
1.01M
Value
91.96M
Filed
Jun 30, 2026
NEEDHAM INVESTMENT MANAGEMENT LLC
CIK 1167212
Shares
957.50K
Value
86.88M
Filed
Jun 30, 2026
JUPITER TOPCO LLC
CIK 2146052
Shares
949.90K
Value
86.19M
Filed
Jun 30, 2026
JANUS HENDERSON GROUP LTD.
CIK 1274173
Shares
907.78K
Value
54.09M
Filed
Mar 31, 2026
ROYCE & ASSOCIATES LP
CIK 906304
Shares
842.32K
Value
76.43M
Filed
Jun 30, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
835.69K
Value
75.83K
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FMR LLC | 315066 | 4.52M | 410.55M | Jun 30, 2026 |
| 2 | BLACKROCK, INC. | 2012383 | 4.32M | 392.36M | Jun 30, 2026 |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 2.34M | 212.26M | Jun 30, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 2.32M | 66.92M | Jun 30, 2024 |
| 5 | DIMENSIONAL FUND ADVISORS LP | 354204 | 2.19M | 198.29M | Jun 30, 2026 |
| 6 | T. ROWE PRICE INVESTMENT MANAGEMENT, INC. | 1897612 | 2.15M | 195.45K | Jun 30, 2026 |
| 7 | AMERICAN CENTURY COMPANIES INC | 748054 | 2.09M | 189.50M | Jun 30, 2026 |
| 8 | VANGUARD GROUP INC | 102909 | 1.78M | 106.57M | Dec 31, 2025 |
| 9 | DRIEHAUS CAPITAL MANAGEMENT LLC | 938206 | 1.56M | 141.60M | Jun 30, 2026 |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.46M | 132.54M | Jun 30, 2026 |
| 11 | DIVISADERO STREET CAPITAL MANAGEMENT, LP | 1901865 | 1.33M | 120.67M | Jun 30, 2026 |
| 12 | STATE STREET CORP | 93751 | 1.26M | 114.76M | Jun 30, 2026 |
| 13 | ACK ASSET MANAGEMENT LLC | 1510940 | 1.20M | 27.38M | Mar 31, 2025 |
| 14 | CAPITAL WORLD INVESTORS | 1422849 | 1.16M | 105M | Jun 30, 2026 |
| 15 | TWO SIGMA INVESTMENTS, LP | 1179392 | 1.01M | 91.96M | Jun 30, 2026 |
| 16 | NEEDHAM INVESTMENT MANAGEMENT LLC | 1167212 | 957.50K | 86.88M | Jun 30, 2026 |
| 17 | JUPITER TOPCO LLC | 2146052 | 949.90K | 86.19M | Jun 30, 2026 |
| 18 | JANUS HENDERSON GROUP LTD. | 1274173 | 907.78K | 54.09M | Mar 31, 2026 |
| 19 | ROYCE & ASSOCIATES LP | 906304 | 842.32K | 76.43M | Jun 30, 2026 |
| 20 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 835.69K | 75.83K | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.