CECO CECO Environmental Corp.
CECO Environmental Corp. (CECO) Institutional Ownership
What the institutions did with CECO last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeLargest holders
| Manager | Shares | % of reported |
|---|---|---|
| FMR LLC | 4.5M | 8.7% |
| BlackRock, Inc. | 4.3M | 8.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.3M | 4.5% |
| DIMENSIONAL FUND ADVISORS LP | 2.2M | 4.2% |
| T. Rowe Price Investment Management, Inc. | 2.2M | 4.2% |
| AMERICAN CENTURY COMPANIES INC | 2.1M | 4.0% |
| Driehaus Capital Management LLC | 1.6M | 3.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | 2.8% |
| Divisadero Street Capital Management, LP | 1.3M | 2.6% |
| STATE STREET CORP | 1.3M | 2.4% |
| Capital World Investors | 1.2M | 2.2% |
| TWO SIGMA INVESTMENTS, LP | 1.0M | 2.0% |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 957.5K | 1.8% |
| Jupiter Topco LLC | 949.9K | 1.8% |
| ROYCE & ASSOCIATES LP | 842.3K | 1.6% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 835.7K | 1.6% |
| EMERALD ADVISERS, LLC | 736.8K | 1.4% |
| KING LUTHER CAPITAL MANAGEMENT CORP | 716.9K | 1.4% |
| Invesco Ltd. | 667.9K | 1.3% |
| LORD, ABBETT & CO. LLC | 642.1K | 1.2% |
| IES Holdings, Inc. | 623.5K | 1.2% |
| Thrivent Financial for Lutherans | 608.0K | 1.2% |
| GW&K Investment Management, LLC | 601.5K | 1.2% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 568.5K | 1.1% |
| NORTHERN TRUST CORP | 492.5K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FMR LLC | Increased | 2.3M | 4.5M | +2.2M |
| BlackRock, Inc. | Increased | 2.3M | 4.3M | +2.0M |
| DIMENSIONAL FUND ADVISORS LP | Increased | 903.3K | 2.2M | +1.3M |
| Divisadero Street Capital Management, LP | Increased | 187.6K | 1.3M | +1.1M |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.3M | 2.3M | +1.0M |
| Driehaus Capital Management LLC | Increased | 639.9K | 1.6M | +920.6K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 21.4K | 835.7K | +814.3K |
| Invesco Ltd. | Increased | 37.0K | 667.9K | +631.0K |
| STATE STREET CORP | Increased | 657.3K | 1.3M | +607.3K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 856.1K | 1.5M | +604.3K |
| GW&K Investment Management, LLC | New | 0 | 601.5K | +601.5K |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Increased | 387.5K | 957.5K | +570.0K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 115.2K | 568.5K | +453.2K |
| Assenagon Asset Management S.A. | New | 0 | 439.6K | +439.6K |
| VOYA INVESTMENT MANAGEMENT LLC | Increased | 5.1K | 396.3K | +391.2K |
| VAN LANSCHOT KEMPEN INVESTMENT MANAGEMENT N.V. | New | 0 | 327.3K | +327.3K |
| Harvey Partners, LLC | New | 0 | 311.1K | +311.1K |
| Nuveen, LLC | Increased | 121.9K | 414.2K | +292.4K |
| UBS Group AG | Increased | 201.1K | 475.2K | +274.1K |
| NEW SOUTH CAPITAL MANAGEMENT INC | New | 0 | 257.3K | +257.3K |
| MILLENNIUM MANAGEMENT LLC | Increased | 11.8K | 259.5K | +247.7K |
| NORTHERN TRUST CORP | Increased | 251.9K | 492.5K | +240.6K |
| Engineers Gate Manager LP | Increased | 3.4K | 243.2K | +239.7K |
| Penn Capital Management Company, LLC | New | 0 | 237.1K | +237.1K |
| FARALLON CAPITAL MANAGEMENT LLC | Sold Out | 234.0K | 0 | -234.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.