Who owns CECO (CECO)
Which tracked institutional funds hold CECO, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See CECO company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
68 tracked funds added or opened CECO while 57 trimmed or exited it between 2025-Q4 and 2026-Q1 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
CECO’s largest tracked holder by dollar value, FMR LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes CECO more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in CECO divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 261 tracked filers holding CECO, 149 increased or opened the position and 108 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in CECO between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 27
- VANGUARD CAPITAL MANAGEMENT LLC$79M
- Rockefeller Capital Management L.P.$15M
- VANGUARD PORTFOLIO MANAGEMENT LLC$14M
- FARALLON CAPITAL MANAGEMENT LLC$14M
- VANGUARD FIDUCIARY TRUST CO$12M
- Divisadero Street Capital Management, LP$11M
Full exits 19
- VANGUARD GROUP INC$92M
- Capital International Investors$43M
- WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC$42M
- WELLINGTON MANAGEMENT GROUP LLP$36M
- TWO SIGMA ADVISERS, LP$15M
- CASTLEARK MANAGEMENT LLC$9M
Largest adds
- T. Rowe Price Investment Management, Inc.$126M
- Capital World Investors$43M
- TWO SIGMA INVESTMENTS, LP$26M
- IES Holdings, Inc.$17M
- MARSHALL WACE, LLP$15M
- BESSEMER GROUP INC$13M
Largest trims
- KING LUTHER CAPITAL MANAGEMENT CORP$12M
- AMERICAN CENTURY COMPANIES INC$9M
- Nuveen, LLC$8M
- First Eagle Investment Management, LLC$8M
- FRANKLIN RESOURCES INC$6M
- LOOMIS SAYLES & CO L P$6M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| FMR LLC added | 2,287,678 | $136M | 6.5% | 2026-Q1 |
| BlackRock, Inc. trimmed | 2,285,277 | $136M | 6.5% | 2026-Q1 |
| T. Rowe Price Investment Management, Inc. added | 2,131,845 | $127M | 6.1% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC trimmed | 1,894,177 | $113M | 5.4% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 1,332,469 | $79M | 3.8% | 2026-Q1 |
| Capital World Investors added | 1,055,080 | $63M | 3.0% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 959,698 | $57M | 2.7% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 903,291 | $54M | 2.6% | 2026-Q1 |
| JANUS HENDERSON GROUP PLC trimmed | 894,782 | $53M | 2.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 856,133 | $51M | 2.4% | 2026-Q1 |
| ROYCE & ASSOCIATES LP added | 827,781 | $49M | 2.4% | 2026-Q1 |
| KING LUTHER CAPITAL MANAGEMENT CORP trimmed | 750,083 | $45M | 2.1% | 2026-Q1 |
| STATE STREET CORP added | 657,349 | $39M | 1.9% | 2026-Q1 |
| Thrivent Financial for Lutherans trimmed | 640,006 | $38M | 1.8% | 2026-Q1 |
| Driehaus Capital Management LLC added | 639,892 | $38M | 1.8% | 2026-Q1 |
| IES Holdings, Inc. added | 568,527 | $34M | 1.6% | 2026-Q1 |
| EMERALD ADVISERS, LLC added | 523,017 | $31M | 1.5% | 2026-Q1 |
| LORD, ABBETT & CO. LLC added | 414,400 | $25M | 1.2% | 2026-Q1 |
| Legal & General Group Plc trimmed | 400,472 | $24M | 1.1% | 2026-Q1 |
| NEEDHAM INVESTMENT MANAGEMENT LLC added | 387,500 | $23M | 1.1% | 2026-Q1 |
| MORGAN STANLEY added | 350,740 | $21M | 1.0% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST added | 314,005 | $19M | 0.9% | 2026-Q1 |
| Rockefeller Capital Management L.P. added | 254,321 | $15M | 0.7% | 2026-Q1 |
| MARSHALL WACE, LLP added | 251,904 | $15M | 0.7% | 2026-Q1 |
| NORTHERN TRUST CORP added | 251,874 | $15M | 0.7% | 2026-Q1 |
| MARTIN & CO INC /TN/ added | 249,462 | $15M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 247,499 | $15M | 0.7% | 2026-Q1 |
| First Eagle Investment Management, LLC trimmed | 242,511 | $14M | 0.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 237,837 | $14M | 0.7% | 2026-Q1 |
| FARALLON CAPITAL MANAGEMENT LLC new | 234,000 | $14M | 0.7% | 2026-Q1 |
| LOOMIS SAYLES & CO L P trimmed | 229,014 | $14M | 0.7% | 2026-Q1 |
| DEUTSCHE BANK AG\ added | 227,787 | $14M | 0.6% | 2026-Q1 |
| OSTERWEIS CAPITAL MANAGEMENT INC added | 226,617 | $14M | 0.6% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 217,386 | $13M | 0.6% | 2026-Q1 |
| BESSEMER GROUP INC added | 216,494 | $13M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 209,692 | $12M | 0.6% | 2026-Q1 |
| UBS Group AG trimmed | 201,107 | $12M | 0.6% | 2026-Q1 |
| Robeco Schweiz AG added | 198,743 | $12M | 0.6% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 191,494 | $11M | 0.5% | 2026-Q1 |
| Divisadero Street Capital Management, LP added | 187,600 | $11M | 0.5% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 175,054 | $10M | 0.5% | 2026-Q1 |
| Amundi trimmed | 168,199 | $10M | 0.5% | 2026-Q1 |
| Squarepoint Ops LLC added | 165,266 | $10M | 0.5% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 159,079 | $9M | 0.5% | 2026-Q1 |
| ESSEX INVESTMENT MANAGEMENT CO LLC added | 157,246 | $9M | 0.4% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 156,563 | $9M | 0.4% | 2026-Q1 |
| PEREGRINE CAPITAL MANAGEMENT LLC trimmed | 154,307 | $9M | 0.4% | 2026-Q1 |
| Pier Capital, LLC added | 150,245 | $9M | 0.4% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 149,778 | $9M | 0.4% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 147,465 | $9M | 0.4% | 2026-Q1 |
| Allspring Global Investments Holdings, LLC trimmed | 146,701 | $9M | 0.4% | 2026-Q1 |
| POLEN CAPITAL MANAGEMENT LLC added | 143,231 | $9M | 0.4% | 2026-Q1 |
| OBERWEIS ASSET MANAGEMENT INC/ trimmed | 135,032 | $8M | 0.4% | 2026-Q1 |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC added | 134,370 | $8M | 0.4% | 2026-Q1 |
| SILVERCREST ASSET MANAGEMENT GROUP LLC trimmed | 131,652 | $8M | 0.4% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 126,512 | $8M | 0.4% | 2026-Q1 |
| Nuveen, LLC trimmed | 121,866 | $7M | 0.3% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 115,242 | $7M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 114,482 | $7M | 0.3% | 2026-Q1 |
| SEI INVESTMENTS CO added | 111,313 | $7M | 0.3% | 2026-Q1 |
| MARATHON CAPITAL MANAGEMENT trimmed | 98,330 | $6M | 0.3% | 2026-Q1 |
| Granahan Investment Management, LLC trimmed | 92,728 | $6M | 0.3% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 91,860 | $5M | 0.3% | 2026-Q1 |
| GREAT LAKES ADVISORS, LLC trimmed | 91,071 | $5M | 0.3% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 86,405 | $5M | 0.2% | 2026-Q1 |
| SG Americas Securities, LLC trimmed | 78,143 | $5M | 0.2% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 76,339 | $5M | 0.2% | 2026-Q1 |
| Peregrine Asset Advisers, Inc. trimmed | 73,886 | $4M | 0.2% | 2026-Q1 |
| Panoramic Capital, LLC added | 66,566 | $4M | 0.2% | 2026-Q1 |
| 4D Advisors, LLC new | 65,000 | $4M | 0.2% | 2026-Q1 |
| FORMULA GROWTH LTD trimmed | 62,344 | $4M | 0.2% | 2026-Q1 |
| Legato Capital Management LLC trimmed | 60,626 | $4M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC trimmed | 60,310 | $4M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 59,900 | $4M | 0.2% | 2026-Q1 |
| Calamos Advisors LLC added | 58,053 | $3M | 0.2% | 2026-Q1 |
| Moran Wealth Management, LLC added | 56,953 | $3M | 0.2% | 2026-Q1 |
| WHITE PINE CAPITAL LLC trimmed | 56,707 | $3M | 0.2% | 2026-Q1 |
| TIG Advisors, LLC new | 54,234 | $3M | 0.2% | 2026-Q1 |
| Aquatic Capital Management LLC added | 52,731 | $3M | 0.2% | 2026-Q1 |
| TD Asset Management Inc added | 52,724 | $3M | 0.2% | 2026-Q1 |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. trimmed | 50,520 | $3M | 0.1% | 2026-Q1 |
| 1060 Capital, LLC new | 50,000 | $3M | 0.1% | 2026-Q1 |
| North Star Investment Management Corp. added | 48,150 | $3M | 0.1% | 2026-Q1 |
| CREDIT AGRICOLE S A | 47,936 | $3M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 1,531,408 | $92M | 4.4% | 2025-Q4 stale |
| Capital International Investors trimmed | 721,982 | $43M | 2.1% | 2025-Q4 stale |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC added | 706,273 | $42M | 2.0% | 2025-Q4 stale |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 607,417 | $36M | 1.7% | 2025-Q4 stale |
| ACK Asset Management LLC trimmed | 1,201,000 | $27M | 1.3% | 2025-Q1 stale |
| Hood River Capital Management LLC trimmed | 492,374 | $25M | 1.2% | 2025-Q3 stale |
| TWO SIGMA ADVISERS, LP added | 247,342 | $15M | 0.7% | 2025-Q4 stale |
| CASTLEARK MANAGEMENT LLC added | 156,505 | $9M | 0.4% | 2025-Q4 stale |
| Advantage Alpha Capital Partners LP trimmed | 113,645 | $6M | 0.3% | 2025-Q3 stale |
| JANE STREET GROUP, LLC trimmed | 88,820 | $5M | 0.3% | 2025-Q4 stale |
| CSM Advisors, LLC new | 185,435 | $5M | 0.3% | 2025-Q2 stale |
| Informed Momentum Co LLC trimmed | 85,139 | $5M | 0.2% | 2025-Q4 stale |
| VAN ECK ASSOCIATES CORP trimmed | 83,596 | $4M | 0.2% | 2025-Q3 stale |
| THAMES CAPITAL MANAGEMENT LLC | 69,403 | $4M | 0.2% | 2025-Q4 stale |
| Foundry Partners, LLC added | 172,670 | $4M | 0.2% | 2025-Q1 stale |
| MACQUARIE GROUP LTD trimmed | 66,134 | $3M | 0.2% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.