CECO ENVIRONMENTAL CORP CECO
COM · Common Stock · CUSIP 125141101
- SectorIndustrials
- IndustryIndustrial & Commercial Fans & Blowers & Air Purifing Equip
- HeadquartersAddison, TX
- Founded1966
- Websitececoenviro.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 34.8m as of 2023-08-01, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $13.36. Options: 4 managers hold calls ($105.5k notional), 2 hold puts ($33.4k).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 113 |
| Q4 2022 | 121 |
| Q1 2023 | 141 |
| Q2 2023 | 145 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 48 | 58 |
| Q1 2023 | 78 | 55 |
| Q2 2023 | 74 | 74 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $560.0k | $41.0k | 0.07 |
| Q4 2022 | $241.7k | $1.4m | 5.85 |
| Q1 2023 | $533.7k | $185.7k | 0.35 |
| Q2 2023 | $105.5k | $33.4k | 0.32 |
Biggest buyers
| BlackRock Inc. | Added | +1.4m |
| RK Capital Management, LLC | New | +647.3k |
| ROYCE & ASSOCIATES LP | Added | +524.7k |
| STATE STREET CORP | Added | +374.7k |
| GEODE CAPITAL MANAGEMENT, LLC | Added | +315.3k |
| FORMULA GROWTH LTD | New | +310.1k |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC | New | +292.0k |
| NORTHERN TRUST CORP | Added | +189.6k |
| Millrace Asset Group, Inc. | New | +182.7k |
| OBERWEIS ASSET MANAGEMENT INC/ | Added | +170.0k |
Biggest sellers
| MILLENNIUM MANAGEMENT LLC | Reduced | -508.6k |
| Informed Momentum Co LLC | Sold out | -342.1k |
| CITADEL ADVISORS LLC | Reduced | -326.6k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | -323.7k |
| Invesco Ltd. | Reduced | -269.3k |
| Cubist Systematic Strategies, LLC | Sold out | -168.9k |
| Legal & General Group Plc | Reduced | -162.5k |
| JANE STREET GROUP, LLC | Reduced | -158.9k |
| ACADIAN ASSET MANAGEMENT LLC | Reduced | -138.2k |
| Russell Investments Group, Ltd. | Reduced | -128.8k |
Biggest calls
| CITADEL ADVISORS LLC | Reduced | $88.2k6.6k shares |
| GROUP ONE TRADING LLC | Added | $16.0k1.2k shares |
| PEAK6 Investments LLC | Reduced | $1.3k100 shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $33.4k2.5k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
DEZWIREK JASON
13D · may seek influence
filed 2026-02-26
Stated purposeItem 4 of the Schedule 13D is hereby amended and supplemented by adding the following at the end thereof: On February 23, 2026, the Issuer, Longhorn Merger Sub Inc., a Delaware corporation and wholly owned subsidiary of the Issuer ("Merger Sub Inc."), and Longhorn Merger Sub LLC, a Delaware limited liability company and wholly owned subsidiary of the Issuer ("Merger Sub LLC"), and Thermon Group Holdings, Inc., a Delaware corporation ("Thermon") entered into an Agreement and Plan of Merger, dated as of February 23, 2026 (the "Merger Agreement"), which provided for, among other things, (i) the merger of Merger Sub Inc. with and into Thermon, with Thermon continuing as the surviving entity (the "Surviving Corporation") (the "First Merger") and (ii) immediately following the First Merger, the… Full filing |
11.7% |
| FMR LLC 13G · institution +1.5 pts · filed 2026-08-06 | 7.7% |
| BlackRock, Inc. 13G · institution filed 2025-07-16 | 6.3% |
Fell to 5% or below in the last year: AMERICAN CENTURY INVESTMENT MANAGEMENT INC (3.6%, 2026-08-14), T. Rowe Price Investment Management, Inc. (3.7%, 2026-08-14), VANGUARD GROUP INC (5.0%, 2026-01-30)
Insider purchases and sales in Q2 2023
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q3 2021 | 0 | — | 0 | — | — |
| Q4 2021 | 2 | $276.3k | 0 | — | — |
| Q1 2022 | 4 | $197.0k | 0 | — | — |
| Q2 2022 | 1 | $3.1k | 0 | — | — |
| Q3 2022 | 3 | $324.5k | 0 | — | — |
| Q4 2022 | 1 | $2.8k | 1 | $127.5k | — |
| Q1 2023 | 2 | $191.7k | 2 | $349.9k | — |
| Q2 2023 | 0 | — | 0 | — | — |
None reported in Q2 2023.
Holders, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| BlackRock Inc. 0.00% of their portfolio | 2.6m $35.0m | Added +1.4m |
| DIMENSIONAL FUND ADVISORS LP 0.01% of their portfolio | 2.3m $31.3m | Reduced -30.9k |
| KING LUTHER CAPITAL MANAGEMENT CORP 0.11% of their portfolio | 1.6m $21.7m | Reduced -6.0k |
| VANGUARD GROUP INC 0.00% of their portfolio | 1.4m $19.1m | Added +125.3k |
| ROYCE & ASSOCIATES LP 0.11% of their portfolio | 819.7k $11.0m | Added +524.7k |
| AMERICAN CENTURY COMPANIES INC 0.01% of their portfolio | 751.8k $10.0m | Added +15.8k |
| RK Capital Management, LLC 1.86% of their portfolio | 647.3k $8.6m | New |
| Tieton Capital Management, LLC 5.32% of their portfolio | 620.1k $8.3m | Added +6.8k |
| Assenagon Asset Management S.A. 0.03% of their portfolio | 607.9k $8.1m | Added +21.4k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 596.9k $8.0m | Reduced -34.1k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 596.5k $8.0m | Added +315.3k |
| HEARTLAND ADVISORS INC 0.42% of their portfolio | 550.0k $7.3m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 483.9k $6.5m | Added +374.7k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 458.9k $6.1m | Reduced -79.2k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 412.6k $5.5m | Reduced -508.6k |
| SILVERCREST ASSET MANAGEMENT GROUP LLC 0.04% of their portfolio | 411.8k $5.5m | Added +58.4k |
| OBERWEIS ASSET MANAGEMENT INC/ 0.64% of their portfolio | 392.6k $5.2m | Added +170.0k |
| MARTIN & CO INC /TN/ 1.29% of their portfolio | 382.6k $5.1m | Reduced -11.3k |
| KENNEDY CAPITAL MANAGEMENT LLC 0.12% of their portfolio | 382.2k $5.1m | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 376.8k $5.0m | Reduced -47.8k |
| Manatuck Hill Partners, LLC 2.28% of their portfolio | 360.0k $4.8m | Added +85.0k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 350.6k $4.7m | Reduced -21.1k |
| FORMULA GROWTH LTD 1.32% of their portfolio | 310.1k $4.1m | New |
| Hillsdale Investment Management Inc. 0.37% of their portfolio | 305.3k $4.1m | Reduced -123.2k |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 295.8k $4.0m | Reduced -326.6k |
| INTRINSIC EDGE CAPITAL MANAGEMENT LLC 0.30% of their portfolio | 292.0k $3.9m | New |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 261.6k $3.5m | Reduced -34.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 245.8k $3.3m | Added +189.6k |
| ESSEX INVESTMENT MANAGEMENT CO LLC 0.41% of their portfolio | 221.6k $3.0m | Added +26.1k |
| ACADIAN ASSET MANAGEMENT LLC 0.01% of their portfolio | 213.7k $2.9m | Reduced -138.2k |
| Millrace Asset Group, Inc. 2.56% of their portfolio | 182.7k $2.4m | New |
| WHITE PINE CAPITAL LLC 0.87% of their portfolio | 175.1k $2.3m | Reduced -5.1k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 169.5k $2.3m | New |
| FEDERATED HERMES, INC. 0.01% of their portfolio | 167.1k $2.2m | Unchanged |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 158.2k $2.1m | Reduced -128.8k |
| MARATHON CAPITAL MANAGEMENT 0.52% of their portfolio | 158.2k $2.1m | Reduced -75.8k |
| Foundry Partners, LLC 0.12% of their portfolio | 149.6k $2.0m | Reduced -2.8k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 145.3k $1.9m | Added +74.2k |
| Connor, Clark & Lunn Investment Management Ltd. 0.01% of their portfolio | 139.2k $1.9m | Reduced -5.7k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 136.2k $1.8m | Added +86.6k |
| Minerva Advisors LLC 1.18% of their portfolio | 127.5k $1.7m | Unchanged |
| Continuum Advisory, LLC 0.24% of their portfolio | 112.3k $1.5m | Unchanged |
| VAN ECK ASSOCIATES CORP 0.00% of their portfolio | 110.2k $1.5m | Added +11.7k |
| Nuveen Asset Management, LLC 0.00% of their portfolio | 105.6k $1.4m | New |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 105.5k $1.4m | Added +12.7k |
| Calamos Advisors LLC 0.01% of their portfolio | 91.9k $1.2m | Reduced -92.5k |
| Squarepoint Ops LLC 0.01% of their portfolio | 86.7k $1.2m | Reduced -38.5k |
| Legato Capital Management LLC 0.15% of their portfolio | 85.3k $1.1m | Added +22.7k |
| NAVELLIER & ASSOCIATES INC 0.22% of their portfolio | 85.0k $1.1m | Added +1.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 83.8k $1.1m | Reduced -26.1k |
| BAILARD, INC. 0.04% of their portfolio | 83.7k $1.1m | Added +4.5k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 80.3k $1.1m | Added +67.9k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 79.0k $1.1m | Reduced -3.5k |
| ALGERT GLOBAL LLC 0.04% of their portfolio | 76.6k $1.0m | Added +13.8k |
| BANK OF MONTREAL /CAN/ 0.00% of their portfolio | 74.2k $998.5k | New |
| JACOBS LEVY EQUITY MANAGEMENT, INC 0.01% of their portfolio | 71.6k $956.5k | Added +31.1k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 65.7k $878.3k | Reduced -13.8k |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.03% of their portfolio | 64.0k $855.7k | Reduced -15.7k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 62.3k $832.0k | Reduced -26.3k |
| Janney Montgomery Scott LLC 0.00% of their portfolio | 61.2k $817.0k | Added +4.9k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 59.7k $797.4k | Added +11.7k |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 58.5k $781.7k | Reduced -6.6k |
| GSA CAPITAL PARTNERS LLP 0.07% of their portfolio | 51.4k $687.0k | Reduced -16.5k |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 49.6k $662.6k | Reduced -11.9k |
| Trexquant Investment LP 0.02% of their portfolio | 48.7k $650.2k | Added +24.2k |
| Invesco Ltd. 0.00% of their portfolio | 45.5k $608.4k | Reduced -269.3k |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.01% of their portfolio | 40.8k $545.1k | Reduced -10.6k |
| Campbell & CO Investment Adviser LLC 0.09% of their portfolio | 39.7k $530.0k | New |
| BARCLAYS PLC 0.00% of their portfolio | 38.6k $515.5k | Reduced -39.5k |
| OCCUDO QUANTITATIVE STRATEGIES LP 0.05% of their portfolio | 38.6k $515.2k | Added +19.2k |
| RHUMBLINE ADVISERS 0.00% of their portfolio | 35.9k $480.1k | New |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 35.2k $470.7k | Reduced -323.7k |
| SageView Advisory Group, LLC 0.03% of their portfolio | 35.1k $469.4k | Added +1.6k |
| NorthCrest Asset Manangement, LLC 0.02% of their portfolio | 34.8k $465.1k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 34.5k $460.7k | Added +14.5k |
| PEAK6 Investments LLC 0.04% of their portfolio | 33.0k $440.3k | Added +29.4k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 23.1k $308.3k | Added +11.2k |
| RITHOLTZ WEALTH MANAGEMENT 0.01% of their portfolio | 22.0k $294.6k | Reduced -7.2k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 21.4k $285.2k | Added +18.3k |
| Empirical Asset Management, LLC 0.25% of their portfolio | 21.3k $285.2k | Unchanged |
| Man Group plc 0.00% of their portfolio | 20.5k $273.5k | New |
| Perritt Capital Management Inc 0.15% of their portfolio | 20.0k $267.2k | Unchanged |
| Cruiser Capital Advisors, LLC 0.27% of their portfolio | 20.0k $267.2k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 18.2k $242.0k | Reduced -17.3k |
| PANAGORA ASSET MANAGEMENT INC 0.00% of their portfolio | 16.7k $223.2k | New |
| Mesirow Financial Investment Management, Inc. 0.93% of their portfolio | 16.4k $218.9k | New |
| Truvestments Capital LLC 0.11% of their portfolio | 16.2k $216.9k | Added +3.2k |
| Versor Investments LP 0.04% of their portfolio | 15.9k $211.8k | New |
| MetLife Investment Management, LLC 0.00% of their portfolio | 15.7k $209.7k | New |
| Private Advisor Group, LLC 0.00% of their portfolio | 15.2k $202.8k | Unchanged |
| Mariner, LLC 0.00% of their portfolio | 15.1k $201.5k | Added +5 |
| Mirae Asset Global Investments Co., Ltd. 0.00% of their portfolio | 14.7k $197.0k | New |
| Tower Research Capital LLC (TRC) 0.01% of their portfolio | 14.6k $195.3k | Added +14.1k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 14.5k $193.1k | Reduced -158.9k |
| AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio | 14.3k $191.0k | New |
| Quantbot Technologies LP 0.01% of their portfolio | 12.8k $170.5k | Reduced -4.9k |
| J.W. COLE ADVISORS, INC. 0.01% of their portfolio | 12.8k $170.5k | Added +75 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 12.6k $168.1k | New |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 12.1k $161.3k | New |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 12.0k $160.9k | New |