CECO
CECO Environmental Corp. · Industrials · Industrial - Pollution & Treatment Controls
Momentum inputs (comparable managers):
holder breadth +11.1% ·
share flow +8.6% ·
net new positions +10.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| 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 | — |
| Q3 2025 | 15 | 0 | 9.38M | $480.39M | +1 | −1 |
| Q2 2025 | 12 | -1 | 8.72M | $246.85M | — | −1 |
| Q1 2025 | 10 | +1 | 2.07M | $47.10M | +1 | — |
| Q4 2024 | 9 | +1 | 1.90M | $57.49M | +1 | — |
| Q3 2024 | 7 | -2 | 1.68M | $47.38M | — | −2 |
| Q2 2024 | 9 | — | 1.99M | $57.31M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 693.83K | +0.3% | $15.82M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 2 | State Street Global Advisors ✦ (passive) | 649.43K | -2.8% | $14.81M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Wellington Management ✦ | 541.98K | +74.6% | $12.36M | 0.0% | ▲ Add | 4 | SEC ↗ ×3 |
| 4 | Two Sigma Investments ✦ | 55.32K | +15.0% | $1.26M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | Millennium Management ✦ | 55.25K | New | $1.26M | 0.0% | New | 1 | SEC ↗ |
| 6 | AQR Capital Management ✦ | 17.50K | -40.4% | $399,091 | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 7 | Arrowstreet Capital ✦ | 15.53K | -84.5% | $354,107 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | D. E. Shaw & Co. ✦ | 13.10K | +48.9% | $298,680 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 12.95K | +13.8% | $296,000 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 10.76K | -67.5% | $245,328 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $1.26M | 0.0% |
Exited
| No tracked exits this quarter. |
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.