ANNX
Annexon, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +9.1% ·
share flow -16.9% ·
net new positions +8.3%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 83 | 0 | 98.98M | $564.98M | +7 | −7 |
| Q1 2026 | 86 | +9 | 86.15M | $477.02M | +15 | −6 |
| Q4 2025 | 77 | +3 | 76.53M | $384.12M | +3 | — |
| Q3 2025 | 16 | +1 | 41.50M | $126.59M | +2 | −1 |
| Q2 2025 | 12 | 0 | 37.67M | $90.40M | +2 | −2 |
| Q1 2025 | 9 | -2 | 6.64M | $12.81M | — | −2 |
| Q4 2024 | 11 | -2 | 14.57M | $74.72M | — | −2 |
| Q3 2024 | 12 | +1 | 12.67M | $75.00M | +1 | — |
| Q2 2024 | 11 | — | 15.25M | $74.74M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Point72 Asset Management ✦ | 5.33M | -11.1% | $31.54M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 2 | Adage Capital Partners ✦ | 2.84M | 0.0% | $16.81M | 0.0% | Held | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 2.14M | +18.3% | $12.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 2.14M | +18.3% | $12.69M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.03M | -5.5% | $6.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 1.03M | -5.5% | $6.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Renaissance Technologies ✦ | 401.40K | -31.3% | $2.38M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Marshall Wace ✦ | 292.37K | -82.7% | $1.73M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 9 | Marshall Wace ✦ | 292.37K | -82.7% | $1.73M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Wellington Management ✦ | 263.36K | +36.2% | $1.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Wellington Management ✦ | 263.36K | +36.2% | $1.56M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 140.92K | -56.8% | $834,229 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | D. E. Shaw & Co. ✦ | 81.41K | -11.6% | $481,953 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Millennium Management ✦ | 72.66K | -79.1% | $430,118 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 64.79K | -76.8% | $383,563 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 64.79K | -76.8% | $383,563 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | AQR Capital Management ✦ | 64.79K | -76.8% | $383,563 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | Citadel Advisors ✦ | 5.64K | New | $33,377 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Citadel Advisors | $33,377 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 216 holders, 155.62M shares, $854.15M 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.