DCO
Ducommun Incorporated · Industrials · Aerospace & Defense
Momentum inputs (comparable managers):
holder breadth +12.5% ·
share flow +7.8% ·
net new positions +11.1%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 4 | +1 | 19.29K | $2.30M | +1 | n/a |
| Q2 2026 | 101 | +7 | 10.11M | $1.86B | +12 | −5 |
| Q1 2026 | 97 | +5 | 9.64M | $1.17B | +11 | −6 |
| Q4 2025 | 92 | 0 | 9.09M | $864.78M | +2 | −2 |
| Q3 2025 | 18 | 0 | 4.77M | $458.46M | +1 | −1 |
| Q2 2025 | 15 | 0 | 4.69M | $387.82M | +1 | −1 |
| Q1 2025 | 12 | -1 | 2.07M | $120.31M | n/a | −1 |
| Q4 2024 | 13 | +3 | 2.09M | $133.05M | +3 | n/a |
| Q3 2024 | 9 | +1 | 1.32M | $87.02M | +1 | n/a |
| Q2 2024 | 8 | n/a | 1.23M | $71.23M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | GAMCO Investors ✦ | 569.87K | -0.8% | $37.51M | 0.4% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 310.70K | +0.5% | $20.46M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 3 | Renaissance Technologies ✦ | 143.30K | -3.1% | $9.43M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 136.57K | New | $8.99M | 0.0% | New | 1 | SEC ↗ ×3 |
| 5 | AQR Capital Management ✦ | 83.25K | -12.9% | $5.48M | 0.0% | ▼ Trim | 2 | SEC ↗ ×3 |
| 6 | Two Sigma Investments ✦ | 41.83K | -20.5% | $2.75M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 18.19K | -7.6% | $1.20M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 8 | Millennium Management ✦ | 13.64K | -40.1% | $897,658 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 4.45K | +3.9% | $294,000 | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Wellington Management | $8.99M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 222 holders, 13.57M shares, $1.55B 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.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer, Director · 2.50K sh · $509,875
Officer, Director · 5.77K sh · $1.16M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology