Security record · archived quarter
ANNX
Annexon, Inc. · Healthcare · Biotechnology
12Tracked holders
0Δ holders
37.67MShares held
$90.40MReported value
+2New positions
−2Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +5.6% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
Ownership over time
| 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 | — | — |
Who holds it · Q2 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 15.70M | — | $37.67M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 15.70M | — | $37.67M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 15.70M | — | $37.67M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 15.70M | — | $37.67M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 15.70M | — | $37.67M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 7.96M | — | $19.11M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 5.37M | — | $12.88M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | The Vanguard Group ✦ (passive) | 5.37M | — | $12.88M | 0.0% | n/c | 1 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 5.37M | — | $12.88M | 0.0% | n/c | 1 | SEC ↗ |
| 16 | Millennium Management ✦ | 2.51M | +1334.2% | $6.03M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 17 | Geode Capital Management ✦ (passive) | 2.28M | +1.8% | $5.48M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | Geode Capital Management ✦ (passive) | 2.28M | +1.8% | $5.48M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 19 | State Street Global Advisors ✦ (passive) | 1.98M | -2.9% | $4.75M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | Renaissance Technologies ✦ | 777.90K | -33.1% | $1.87M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 21 | T. Rowe Price ✦ | 508.10K | -3.2% | $1.22M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 22 | T. Rowe Price ✦ | 508.10K | -3.2% | $1.22M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 23 | AQR Capital Management ✦ | 332.03K | +350.0% | $796,875 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 24 | AQR Capital Management ✦ | 332.03K | +350.0% | $796,875 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 332.03K | +350.0% | $796,875 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | AQR Capital Management ✦ | 332.03K | +350.0% | $796,875 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | AQR Capital Management ✦ | 332.03K | +350.0% | $796,875 | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | Two Sigma Investments ✦ | 201.16K | New | $482,784 | 0.0% | New | 1 | SEC ↗ |
| 29 | Marshall Wace ✦ | 29.99K | New | $71,974 | 0.0% | New | 1 | SEC ↗ |
| 30 | Citadel Advisors ✦ | 13.27K | +6.5% | $31,841 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 31 | Citadel Advisors ✦ | 13.27K | +6.5% | $31,841 | 0.0% | ▲ Add | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Two Sigma Investments | $482,784 | 0.0% |
| Marshall Wace | $71,974 | 0.0% |
Exited
| Wellington Management | $688,006 | was 0.0% |
| Point72 Asset Management | $88,229 | was 0.0% |
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.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2025 ·
Methodology ·
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