CECO ENVIRONMENTAL CORP - Common Stock, $0.01 par value (CECO) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, $0.01 par value
Symbol
CECO on Nasdaq
Shares outstanding
35,881,291
Price per share
$61.80
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
29,461,218
Total reported value
$1,763,275,296
% of total 13F portfolios
0%
Share change
+351,361
Value change
+$30,730,044
Number of holders
227
Price from insider filings
$61.80
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of CECO ENVIRONMENTAL CORP - Common Stock, $0.01 par value (CECO) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
DEZWIREK JASON 12% $259,443,260 4,198,111 Jason DeZwirek 23 Feb 2026
BlackRock, Inc. 6.3% $62,892,553 2,221,551 BlackRock, Inc. 30 Jun 2025
FMR LLC 6.2% +22% $64,390,839 +$11,181,062 2,174,632 +21% FMR LLC 30 Jun 2025
AMERICAN CENTURY INVESTMENT MANAGEMENT INC 5.7% $125,967,682 2,038,312 American Century Investment Management, Inc. 31 Dec 2025
VANGUARD GROUP INC 5% -0.4% $106,568,849 +$588,925 1,780,596 +0.56% The Vanguard Group 31 Dec 2025
Capital International Investors 4.7% $85,777,971 1,675,351 Capital International Investors 30 Sep 2025
DIMENSIONAL FUND ADVISORS LP 3.6% $24,340,540 1,254,667 Dimensional Fund Advisors LP 31 Mar 2025
Hood River Capital Management LLC 1.4% -69% $25,209,549 -$73,487,053 492,374 -74% Hood River Capital Management LLC 30 Sep 2025

As of 31 Dec 2025, 227 institutional investors reported holding 29,461,218 shares of CECO ENVIRONMENTAL CORP - Common Stock, $0.01 par value (CECO). This represents 82% of the company’s total 35,881,291 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of CECO ENVIRONMENTAL CORP - Common Stock, $0.01 par value (CECO) together control 57% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
BlackRock, Inc. 6.4% 2,285,359 +2.3% 0% $136,778,736
FMR LLC 6.2% 2,211,372 +4.2% 0.01% $132,350,610
AMERICAN CENTURY COMPANIES INC 5.7% 2,038,312 +62% 0.06% $121,993,100
VANGUARD GROUP INC 5% 1,780,596 +0.56% 0% $106,568,671
KING LUTHER CAPITAL MANAGEMENT CORP 2.7% 951,199 -15% 0.23% $56,929,260
JANUS HENDERSON GROUP PLC 2.6% 922,000 +0.21% 0.02% $55,181,505
DIMENSIONAL FUND ADVISORS LP 2.5% 895,540 -8.3% 0.01% $53,598,168
ROYCE & ASSOCIATES LP 2.1% 740,687 -10% 0.45% $44,330,117
GEODE CAPITAL MANAGEMENT, LLC 2% 729,700 +1.2% 0% $43,679,601
Capital International Investors 2% 721,982 -57% 0.01% $43,210,623
T. Rowe Price Investment Management, Inc. 2% 718,992 +104% 0.03% $43,032,000
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 2% 706,273 +3% 0.12% $42,270,439
Thrivent Financial for Lutherans 1.9% 672,147 +36% 0.07% $40,229,000
STATE STREET CORP 1.8% 650,886 +0.18% 0% $38,955,527
WELLINGTON MANAGEMENT GROUP LLP 1.7% 607,417 -19% 0.01% $36,353,908
Driehaus Capital Management LLC 1.6% 579,950 +12% 0.24% $34,710,008
TWO SIGMA INVESTMENTS, LP 1.5% 525,567 +74% 0.05% $31,455,185
EMERALD ADVISERS, LLC 1.3% 458,525 +284% 0.85% $27,442,721
Legal & General Group Plc 1.2% 418,255 +3% 0.01% $25,032,563
First Eagle Investment Management, LLC 1% 366,867 -16% 0.04% $21,956,990
Capital World Investors 0.93% 333,098 0% $19,935,915
LOOMIS SAYLES & CO L P 0.91% 327,509 -0.07% 0.02% $19,601,413
NEEDHAM INVESTMENT MANAGEMENT LLC 0.83% 298,500 +71% 1.1% $17,865,225
MORGAN STANLEY 0.82% 294,115 +38% 0% $17,602,802
IES Holdings, Inc. 0.79% 283,432 0% 9.9% $16,963,405

Institutional Holders of CECO ENVIRONMENTAL CORP - Common Stock, $0.01 par value (CECO) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 29,461,218 $1,763,275,296 +$30,730,044 $59.85 227
2025 Q3 28,689,275 $1,469,014,088 -$41,962,862 $51.20 223
2025 Q2 29,533,109 $836,112,974 +$32,129,162 $28.31 176
2025 Q1 29,019,049 $661,701,183 +$4,040,198 $22.80 168
2024 Q4 28,700,286 $867,879,540 +$61,207,759 $30.23 173
2024 Q3 26,597,751 $748,827,118 +$20,787,924 $28.20 172
2024 Q2 25,805,618 $744,389,725 +$64,814,074 $28.85 174
2024 Q1 23,844,042 $548,828,086 -$2,894,856 $23.02 172
2023 Q4 23,945,610 $485,587,280 +$5,745,839 $20.28 156
2023 Q3 23,870,895 $381,219,817 +$1,153,785 $15.97 144
2023 Q2 23,867,510 $318,872,994 +$23,565,379 $13.36 144
2023 Q1 22,038,767 $308,225,395 +$9,650,782 $13.99 140
2022 Q4 21,930,886 $256,185,071 -$3,514,029 $11.68 120
2022 Q3 22,264,368 $197,061,917 +$3,974,759 $8.85 111
2022 Q2 21,886,720 $130,891,482 -$9,420,577 $5.98 92
2022 Q1 23,534,851 $129,146,699 +$2,851,678 $5.49 87
2021 Q4 23,011,348 $143,328,071 -$1,064,143 $6.23 81
2021 Q3 23,120,707 $162,723,601 -$6,697,183 $7.04 79
2021 Q2 24,056,678 $172,146,826 -$1,215,290 $7.16 88
2021 Q1 24,222,794 $192,078,841 -$3,325,268 $7.93 92
2020 Q4 24,713,594 $171,999,450 -$2,243,272 $6.96 82
2020 Q3 24,999,442 $182,224,725 +$75,853 $7.29 86
2020 Q2 24,986,353 $164,632,580 +$4,129,758 $6.59 85
2020 Q1 24,491,873 $114,360,490 -$4,365,177 $4.67 86
2019 Q4 24,878,204 $190,559,799 -$2,127,077 $7.66 99
2019 Q3 25,164,346 $175,739,330 +$4,290,324 $6.98 110
2019 Q2 24,329,412 $233,307,921 +$6,085,044 $9.59 113
2019 Q1 23,905,096 $172,119,286 +$2,134,862 $7.20 112
2018 Q4 23,635,579 $159,608,645 +$3,409,638 $6.75 108
2018 Q3 23,021,189 $181,392,475 +$1,326,133 $7.88 92
2018 Q2 22,904,151 $140,645,079 -$801,482 $6.14 93
2018 Q1 23,264,938 $103,526,870 +$866,884 $4.45 99
2017 Q4 23,020,191 $118,096,333 -$8,908,278 $5.13 107
2017 Q3 23,420,632 $198,397,009 -$1,754,141 $8.46 113
2017 Q2 23,532,965 $216,085,147 -$3,912,690 $9.18 129
2017 Q1 23,805,674 $250,309,608 +$42,845,028 $10.51 141
2016 Q4 21,245,999 $296,387,850 +$21,274,037 $13.95 131
2016 Q3 19,122,663 $215,683,673 +$8,428,910 $11.28 115
2016 Q2 18,383,333 $160,660,321 +$590,691 $8.74 99
2016 Q1 18,524,411 $115,058,905 -$591,547 $6.21 100
2015 Q4 18,521,750 $141,623,787 +$240,901 $7.68 101
2015 Q3 18,389,844 $150,862,419 +$40,895,826 $8.19 109
2015 Q2 12,847,558 $145,540,148 -$7,372,239 $11.33 94
2015 Q1 13,426,687 $142,449,806 -$6,711,700 $10.61 89
2014 Q4 13,646,892 $211,908,019 +$8,547,543 $15.54 98
2014 Q3 13,147,495 $176,322,107 -$2,795,639 $13.40 98
2014 Q2 12,821,096 $199,883,828 +$7,489,994 $15.59 102
2014 Q1 12,329,344 $204,550,671 +$11,610,316 $16.59 101