CECO
CECO Environmental Corp. · Industrials · Industrial - Pollution & Treatment Controls
Momentum inputs (comparable managers):
holder breadth -7.7% ·
share flow +5.9% ·
net new positions -8.3%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 171.59K | $9.94M | n/a | n/a |
| Q2 2026 | 103 | +15 | 31.59M | $2.86B | +19 | −4 |
| Q1 2026 | 91 | +4 | 19.02M | $1.13B | +9 | −5 |
| Q4 2025 | 87 | +2 | 19.22M | $1.15B | +2 | n/a |
| Q3 2025 | 15 | 0 | 9.38M | $480.39M | +1 | −1 |
| Q2 2025 | 12 | -1 | 8.72M | $246.85M | n/a | −1 |
| Q1 2025 | 10 | +1 | 2.07M | $47.10M | +1 | n/a |
| Q4 2024 | 9 | +1 | 1.90M | $57.49M | +1 | n/a |
| Q3 2024 | 7 | -2 | 1.68M | $47.38M | n/a | −2 |
| Q2 2024 | 9 | n/a | 1.99M | $57.31M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.24M | n/a | $63.43M | 0.0% | n/c | 1 | SEC ↗ ×12 |
| 2 | Fidelity (FMR) ✦ | 2.17M | n/a | $61.56M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 3 | The Vanguard Group ✦ (passive) | 1.75M | n/a | $49.66M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 4 | Wellington Management ✦ | 901.60K | +66.3% | $25.52M | 0.0% | ▲ Add | 5 | SEC ↗ ×3 |
| 5 | Geode Capital Management ✦ (passive) | 712.33K | +2.7% | $20.17M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 6 | State Street Global Advisors ✦ (passive) | 657.58K | +1.3% | $18.62M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 125.17K | +1063.2% | $3.54M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 8 | Millennium Management ✦ | 104.84K | +89.8% | $2.97M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | AQR Capital Management ✦ | 14.81K | -15.4% | $419,243 | 0.0% | ▼ Trim | 5 | SEC ↗ ×4 |
| 10 | T. Rowe Price ✦ | 14.78K | +14.2% | $419,000 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 10.85K | -17.2% | $307,135 | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 8.13K | -85.3% | $230,302 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Arrowstreet Capital | $354,107 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 259 holders, 31.26M shares, $1.65B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.