# CECO ENVIRONMENTAL CORP COM

CECO ENVIRONMENTAL CORP COM is a security (CUSIP 125141101) tracked across SEC portfolio filings. 297 institutional managers reported $1.9B on Form 13F as of 2026-06-30; 36 registered fund positions totaling $325.0M via N-PORT as of 2026-05-31.

## Summary

- Issuer: CECO ENVIRONMENTAL CORP
- Class: COM
- CUSIP: 125141101
- Asset category: EC
- 13F holders: 297
- 13F value: $1.9B
- 13F period: 2026-06-30
- N-PORT fund positions: 36
- N-PORT value: $325.0M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 297 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| FMR LLC | BOSTON, MA | $138.8M | 2,328,888 |
| BlackRock, Inc. | New York, NY | $136.2M | 2,285,277 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $112.9M | 1,894,177 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $106.6M | 1,780,596 |
| [EMERALD ADVISERS, LLC](https://search.stillhousedata.com/firm/107496) | LEOLA, PA | $66.9M | 736,784 |
| Capital World Investors | LOS ANGELES, CA | $62.9M | 1,055,080 |
| [TWO SIGMA INVESTMENTS, LP](https://search.stillhousedata.com/firm/137137) | New York, NY | $57.2M | 959,698 |
| JANUS HENDERSON GROUP PLC | LONDON, X0 | $54.1M | 907,782 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $53.8M | 903,291 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $51.0M | 856,133 |
| [ROYCE & ASSOCIATES LP](https://search.stillhousedata.com/firm/107689) | New York, NY | $49.3M | 827,781 |
| [KING LUTHER CAPITAL MANAGEMENT CORP](https://search.stillhousedata.com/firm/110093) | FORT WORTH, TX | $44.7M | 750,083 |
| [EMERALD MUTUAL FUND ADVISERS TRUST](https://search.stillhousedata.com/firm/135130) | LEOLA, PA | $42.8M | 471,220 |
| STATE STREET CORP | BOSTON, MA | $39.2M | 657,349 |
| Driehaus Capital Management LLC | Chicago, IL | $38.1M | 639,892 |

## Top fund holders (N-PORT)

_Showing 15 of 36 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [SMALLCAP World Fund Inc](https://search.stillhousedata.com/fund/S000009599) | SMALLCAP World Fund Inc | $62.9M | 7.76% |
| [Janus Henderson Venture Fund](https://search.stillhousedata.com/fund/S000010488) | JANUS INVESTMENT FUND | $42.9M | 140.02% |
| [T. Rowe Price Small-Cap Stock Fund, Inc.](https://search.stillhousedata.com/fund/S000002120) | T. ROWE PRICE SMALL-CAP STOCK FUND, INC. | $41.4M | 51.26% |
| [T. Rowe Price Institutional Small-Cap Stock Fund](https://search.stillhousedata.com/fund/S000002094) | T. Rowe Price Equity Funds, Inc. | $22.3M | 51.45% |
| [Thrivent Small-Mid Cap Equity ETF](https://search.stillhousedata.com/fund/S000075337) | Thrivent ETF Trust | $20.9M | 243.50% |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $20.1M | 2.47% |
| [T. Rowe Price Small-Cap Value Fund, Inc.](https://search.stillhousedata.com/fund/S000002121) | T. ROWE PRICE SMALL-CAP VALUE FUND, INC. | $18.0M | 19.53% |
| [Emerald Growth Fund](https://search.stillhousedata.com/fund/S000036390) | FINANCIAL INVESTORS TRUST | $17.6M | 125.07% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $12.4M | 16.60% |
| [LORD ABBETT DEVELOPING GROWTH FUND INC](https://search.stillhousedata.com/fund/S000006834) | LORD ABBETT DEVELOPING GROWTH FUND, INC. | $11.7M | 52.71% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $11.3M | 6.46% |
| ROYCE SMALL-CAP TRUST, INC. | ROYCE SMALL-CAP TRUST, INC. | $9.8M | 44.06% |
| ROYCE MICRO-CAP TRUST, INC. | ROYCE MICRO-CAP TRUST, INC. | $7.7M | 112.60% |
| [Oberweis Micro-Cap Fund](https://search.stillhousedata.com/fund/S000010231) | OBERWEIS FUNDS | $7.7M | 73.59% |
| [Optimum Small-Mid Cap Growth Fund](https://search.stillhousedata.com/fund/S000002424) | Optimum Fund Trust | $3.0M | 39.69% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/125141101.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.