CECO ENVIRONMENTAL CORP (CECO) Top Institutional Shareholders
CECO ENVIRONMENTAL CORP (CECO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $1.65B in CECO holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of CECO tracked by InsiderSet, reporting ownership valued at approximately $138.76M in its March 31, 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 $219.99M, representing an estimated gain of +58.54% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 48% of the total disclosed CECO value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., American Century Companies Inc, and several other long-term asset managers with concentrated positions in CECO ENVIRONMENTAL CORP (CECO).
This page ranks the largest institutional CECO 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
256
Total Reported Value
$1.65B
Largest Holder
Fmr Llc
Largest Position
$138.76M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
131
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.01% | 2,328,888 | $138,755,157 | $219,986,760 | +$81,231,603 | +58.54% | |
| Blackrock, Inc. | 0.00% | 2,285,277 | $136,156,803 | $215,867,265 | +$79,710,462 | +58.54% | |
| American Century Companies Inc | 0.06% | 1,894,177 | $112,855,166 | $178,923,959 | +$66,068,793 | +58.54% | |
| Vanguard Capital Management Llc | 0.00% | 1,332,469 | $79,388,503 | $125,865,022 | +$46,476,519 | +58.54% | |
| Capital World Investors | 0.01% | 1,055,080 | $62,861,666 | $99,662,857 | +$36,801,191 | +58.54% | |
| Two Sigma Investments, Lp | 0.05% | 959,698 | $57,178,807 | $90,653,073 | +$33,474,266 | +58.54% | |
| Dimensional Fund Advisors Lp | 0.01% | 903,291 | $53,812,769 | $85,324,868 | +$31,512,099 | +58.56% | |
| Janus Henderson Group Plc | 0.03% | 894,782 | $53,311,112 | $84,521,108 | +$31,209,996 | +58.54% | |
| Geode Capital Management, Llc | 0.00% | 856,133 | $51,016,546 | $80,870,323 | +$29,853,777 | +58.52% | |
| Royce & Associates Lp | 0.49% | 827,781 | $49,319,192 | $78,192,193 | +$28,873,001 | +58.54% | |
| King Luther Capital Management Corp | 0.19% | 750,083 | $44,689,945 | $70,852,840 | +$26,162,895 | +58.54% | |
| State Street Corp | 0.00% | 657,349 | $39,164,853 | $62,093,187 | +$22,928,334 | +58.54% | |
| Driehaus Capital Management Llc | 0.28% | 639,892 | $38,124,765 | $60,444,198 | +$22,319,433 | +58.54% | |
| Ies Holdings, Inc. | 15.83% | 568,527 | $33,872,839 | $53,703,060 | +$19,830,221 | +58.54% | |
| Emerald Advisers, Llc | 0.99% | 523,017 | $31,161,353 | $49,404,186 | +$18,242,833 | +58.54% | |
| Legal & General Group Plc | 0.01% | 400,472 | $23,860,122 | $37,828,585 | +$13,968,463 | +58.54% | |
| Needham Investment Management Llc | 1.18% | 387,500 | $23,087,250 | $36,603,250 | +$13,516,000 | +58.54% | |
| Morgan Stanley | 0.00% | 350,740 | $20,897,172 | $33,130,900 | +$12,233,728 | +58.54% | |
| Emerald Mutual Fund Advisers Trust | 0.91% | 314,005 | $18,708,418 | $29,660,912 | +$10,952,494 | +58.54% | |
| Rockefeller Capital Management L.P. | 0.03% | 254,321 | $15,152,445 | $24,023,162 | +$8,870,717 | +58.54% | |
| Marshall Wace, Llp | 0.02% | 251,904 | $15,008,439 | $23,794,852 | +$8,786,413 | +58.54% | |
| Northern Trust Corp | 0.00% | 251,874 | $15,006,653 | $23,792,018 | +$8,785,365 | +58.54% | |
| Martin & Co Inc | 2.53% | 249,462 | $14,862,916 | $23,564,181 | +$8,701,265 | +58.54% | |
| Charles Schwab Investment Management Inc | 0.00% | 247,499 | $14,745,990 | $23,378,756 | +$8,632,766 | +58.54% | |
| First Eagle U.S. Value | Jean-Marie Eveillard | 0.02% | 242,511 | $14,448,805 | $22,907,589 | +$8,458,784 | +58.54% |
| Vanguard Portfolio Management Llc | 0.00% | 237,837 | $14,170,328 | $22,466,083 | +$8,295,755 | +58.54% | |
| Farallon Capital Management Llc | 0.09% | 234,000 | $13,941,720 | $22,103,640 | +$8,161,920 | +58.54% | |
| Loomis Sayles & Co L P | 0.02% | 229,014 | $13,644,654 | $21,632,662 | +$7,988,008 | +58.54% | |
| Deutsche Bank Ag\ | 0.00% | 227,787 | $13,571,549 | $21,516,760 | +$7,945,211 | +58.54% | |
| Osterweis Capital Management Inc | 0.70% | 226,617 | $13,501,841 | $21,406,242 | +$7,904,401 | +58.54% | |
| Citadel Advisors Llc | 0.01% | 217,386 | $12,951,858 | $20,534,282 | +$7,582,424 | +58.54% | |
| Vanguard Fiduciary Trust Co | 0.00% | 209,692 | $12,493,449 | $19,807,506 | +$7,314,057 | +58.54% | |
| Ubs Group Ag | 0.00% | 201,107 | $11,981,955 | $18,996,567 | +$7,014,612 | +58.54% | |
| Robeco Schweiz Ag | 0.25% | 198,743 | $11,841,108 | $18,773,264 | +$6,932,156 | +58.54% | |
| Bnp Paribas Financial Markets | 0.01% | 191,494 | $11,409,213 | $18,088,523 | +$6,679,310 | +58.54% | |
| Divisadero Street Capital Management, Lp | 0.52% | 187,600 | $11,177,208 | $17,720,696 | +$6,543,488 | +58.54% | |
| Amundi | 0.00% | 168,199 | $10,021,296 | $15,888,078 | +$5,866,782 | +58.54% | |
| Squarepoint Ops Llc | 0.02% | 165,266 | $9,846,548 | $15,611,026 | +$5,764,478 | +58.54% | |
| Point72 Asset Management, L.P. | 0.02% | 159,079 | $9,477,927 | $15,026,602 | +$5,548,675 | +58.54% | |
| Essex Investment Management Co Llc | 1.48% | 157,246 | $9,368,717 | $14,853,457 | +$5,484,740 | +58.54% | |
| First Trust Advisors Lp | 0.01% | 156,563 | $9,328,023 | $14,788,941 | +$5,460,918 | +58.54% | |
| Peregrine Capital Management Llc | 0.34% | 154,307 | $9,193,611 | $14,575,839 | +$5,382,228 | +58.54% | |
| Pier Capital, Llc | 1.48% | 150,245 | $8,951,597 | $14,192,143 | +$5,240,546 | +58.54% | |
| Kennedy Capital Management Llc | 0.19% | 149,778 | $8,923,773 | $14,148,030 | +$5,224,257 | +58.54% | |
| Franklin Resources Inc | 0.00% | 147,465 | $8,785,964 | $13,929,544 | +$5,143,580 | +58.54% | |
| Allspring Global Investments Holdings, Llc | 0.01% | 146,701 | $8,740,446 | $13,857,376 | +$5,116,930 | +58.54% | |
| Polen Capital Management | David M. Polen | 0.06% | 143,231 | $8,533,703 | $13,529,600 | +$4,995,897 | +58.54% |
| Oberweis Asset Management Inc/ | 0.24% | 135,032 | $8,045,207 | $12,755,123 | +$4,709,916 | +58.54% | |
| Voloridge Investment Management, Llc | 0.03% | 134,370 | $8,005,765 | $12,692,590 | +$4,686,825 | +58.54% | |
| Silvercrest Asset Management Group Llc | 0.06% | 131,652 | $7,843,826 | $12,435,848 | +$4,592,022 | +58.54% |
Frequently asked questions about CECO
Who owns the most CECO stock?
The largest holders of CECO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for CECO ENVIRONMENTAL CORP (CECO).
Is CECO widely held by superinvestors?
Many widely followed stocks like CECO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly CECO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.