MGNX
name pending profile ingest
Momentum inputs (comparable managers):
holder breadth -6.7% ·
share flow +5.4% ·
net new positions -7.1%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 1 | +1 | 5 | $19 | +1 | n/a |
| Q2 2026 | 63 | +12 | 29.89M | $138.06M | +18 | −6 |
| Q1 2026 | 51 | +5 | 25.23M | $72.90M | +7 | −2 |
| Q4 2025 | 46 | +1 | 22.59M | $36.34M | +1 | n/a |
| Q3 2025 | 14 | -1 | 15.12M | $25.40M | n/a | −1 |
| Q2 2025 | 12 | 0 | 11.58M | $14.01M | +1 | −1 |
| Q1 2025 | 9 | 0 | 6.98M | $8.87M | +1 | −1 |
| Q4 2024 | 9 | -1 | 8.68M | $28.22M | n/a | −1 |
| Q3 2024 | 9 | -1 | 8.63M | $28.39M | n/a | −1 |
| Q2 2024 | 10 | n/a | 8.97M | $38.13M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 4.22M | +0.3% | $7.10M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 2 | Millennium Management ✦ | 2.12M | +5.0% | $3.56M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 3 | Renaissance Technologies ✦ | 1.70M | +28.2% | $2.86M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 1.54M | -15.3% | $2.59M | 0.0% | ▼ Trim | 2 | SEC ↗ ×7 |
| 5 | JPMorgan Chase ✦ | 1.51M | n/a | $2.54M | 0.0% | n/c | 1 | SEC ↗ ×4 |
| 6 | Morgan Stanley ✦ | 989.23K | n/a | $1.66M | 0.0% | n/c | 1 | SEC ↗ ×6 |
| 7 | Geode Capital Management ✦ (passive) | 657.52K | -3.8% | $1.11M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 8 | Marshall Wace ✦ | 629.53K | +55.1% | $1.06M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 9 | Citadel Advisors ✦ | 493.53K | +187.6% | $829,132 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 10 | Two Sigma Investments ✦ | 437.09K | +7.3% | $734,313 | 0.0% | ▲ Add | 6 | SEC ↗ |
| 11 | State Street Global Advisors ✦ (passive) | 274.59K | -8.6% | $461,306 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | Goldman Sachs Group ✦ | 258.66K | n/a | $434,552 | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 13 | D. E. Shaw & Co. ✦ | 222.20K | +121.1% | $373,296 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | Fidelity (FMR) ✦ | 63.33K | -0.9% | $106,401 | 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
| No new tracked buyers this quarter. |
Exited
| AQR Capital Management | $91,390 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 108 holders, 43.15M shares, $116.09M 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 · 31.11K sh · $129,086
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology