Security record · archived quarter
ANNX
Annexon, Inc. · Healthcare · Biotechnology
77Tracked holders
+3Δ holders
76.53MShares held
$384.12MReported value
+3New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +4.1% ·
share flow +16.7% ·
net new positions +3.9%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 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 · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 10.22M | -7.8% | $51.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 2 | Fidelity (FMR) ✦ | 10.22M | -7.8% | $51.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 3 | Fidelity (FMR) ✦ | 10.22M | -7.8% | $51.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | Fidelity (FMR) ✦ | 10.22M | -7.8% | $51.32M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 8.96M | +13.4% | $44.98M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 7.75M | +32.9% | $38.92M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 7.75M | +32.9% | $38.92M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 7.75M | +32.9% | $38.92M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 18 | Adage Capital Partners ✦ | 5.50M | +266.7% | $27.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | State Street Global Advisors ✦ (passive) | 4.65M | +126.9% | $23.35M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 20 | Ameriprise Financial Inc | 4.35M | — | $21.83M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Ameriprise Financial Inc | 4.35M | — | $21.83M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Ameriprise Financial Inc | 4.35M | — | $21.83M | 0.0% | n/c | 1 | SEC ↗ |
| 23 | Balyasny Asset Management L.P. | 3.30M | — | $16.56M | 0.0% | n/c | 1 | SEC ↗ |
| 24 | Nuveen, LLC | 2.92M | — | $14.63M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | Nuveen, LLC | 2.92M | — | $14.63M | 0.0% | n/c | 1 | SEC ↗ |
| 26 | Nuveen, LLC | 2.92M | — | $14.63M | 0.0% | n/c | 1 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 2.90M | +19.1% | $14.58M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 28 | Geode Capital Management ✦ (passive) | 2.90M | +19.1% | $14.58M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 29 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 30 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 33 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 34 | Morgan Stanley ✦ | 2.86M | -5.7% | $14.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 35 | Millennium Management ✦ | 2.84M | +0.5% | $14.24M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 36 | Qube Research & Technologies Ltd | 2.38M | — | $11.96M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Goldman Sachs Group ✦ | 1.77M | -26.5% | $8.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | Goldman Sachs Group ✦ | 1.77M | -26.5% | $8.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 39 | Goldman Sachs Group ✦ | 1.77M | -26.5% | $8.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Bank Of America Corp /De/ | 1.61M | — | $8.06M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Bank Of America Corp /De/ | 1.61M | — | $8.06M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Bank Of America Corp /De/ | 1.61M | — | $8.06M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Bank Of America Corp /De/ | 1.61M | — | $8.06M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Charles Schwab Investment… | 1.06M | — | $5.31M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | D. E. Shaw & Co. ✦ | 1.05M | New | $5.25M | 0.0% | New | 1 | SEC ↗ |
| 46 | D. E. Shaw & Co. ✦ | 1.05M | New | $5.25M | 0.0% | New | 1 | SEC ↗ |
| 47 | Invesco Ltd. | 972.45K | — | $4.88M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Invesco Ltd. | 972.45K | — | $4.88M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Invesco Ltd. | 972.45K | — | $4.88M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Massachusetts Financial Services Co… | 903.44K | — | $4.54M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Renaissance Technologies ✦ | 802.60K | +6.5% | $4.03M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 52 | Northern Trust Corp | 792.00K | — | $3.98M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | Northern Trust Corp | 792.00K | — | $3.98M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Northern Trust Corp | 792.00K | — | $3.98M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 56 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 59 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 60 | AQR Capital Management ✦ | 776.31K | +35.2% | $3.90M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 61 | Dimensional Fund Advisors Lp | 718.68K | — | $3.61M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Dimensional Fund Advisors Lp | 718.68K | — | $3.61M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Dimensional Fund Advisors Lp | 718.68K | — | $3.61M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Russell Investments Group, Ltd. | 683.02K | — | $3.43M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Wells Fargo & Company/Mn | 573.75K | — | $2.88M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Wells Fargo & Company/Mn | 573.75K | — | $2.88M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Wells Fargo & Company/Mn | 573.75K | — | $2.88M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Deutsche Bank Ag\ | 560.74K | — | $2.81M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Deutsche Bank Ag\ | 560.74K | — | $2.81M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Deutsche Bank Ag\ | 560.74K | — | $2.81M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Marshall Wace ✦ | 521.00K | New | $2.62M | 0.0% | New | 1 | SEC ↗ |
| 79 | Marshall Wace ✦ | 521.00K | New | $2.62M | 0.0% | New | 1 | SEC ↗ |
| 80 | Jane Street Group, Llc | 513.84K | — | $2.58M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Jane Street Group, Llc | 513.84K | — | $2.58M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | T. Rowe Price ✦ | 445.07K | -8.2% | $2.23M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 83 | T. Rowe Price ✦ | 445.07K | -8.2% | $2.23M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 84 | Wellington Management ✦ | 398.08K | New | $2.00M | 0.0% | New | 1 | SEC ↗ |
| 85 | Wellington Management ✦ | 398.08K | New | $2.00M | 0.0% | New | 1 | SEC ↗ |
| 86 | Wellington Management ✦ | 398.08K | New | $2.00M | 0.0% | New | 1 | SEC ↗ |
| 87 | UBS Group AG | 377.10K | — | $1.89M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | UBS Group AG | 377.10K | — | $1.89M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | UBS Group AG | 377.10K | — | $1.89M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Point72 Asset Management ✦ | 371.19K | +312.2% | $1.86M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 91 | Bank of New York Mellon Corp | 361.68K | — | $1.82M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Bank of New York Mellon Corp | 361.68K | — | $1.82M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Bank of New York Mellon Corp | 361.68K | — | $1.82M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Bank of New York Mellon Corp | 361.68K | — | $1.82M | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Bank of New York Mellon Corp | 361.68K | — | $1.82M | 0.0% | n/c | 1 | SEC ↗ |
| 96 | Two Sigma Investments ✦ | 332.04K | +18.9% | $1.67M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 97 | Barclays Plc | 289.96K | — | $1.46M | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Barclays Plc | 289.96K | — | $1.46M | 0.0% | n/c | 1 | SEC ↗ |
| 99 | Citadel Advisors ✦ | 275.29K | +64.3% | $1.38M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 100 | American Century Companies Inc | 251.16K | — | $1.26M | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $5.25M | 0.0% |
| D. E. Shaw & Co. | $5.25M | 0.0% |
| Marshall Wace | $2.62M | 0.0% |
| Marshall Wace | $2.62M | 0.0% |
| Wellington Management | $2.00M | 0.0% |
| Wellington Management | $2.00M | 0.0% |
| Wellington Management | $2.00M | 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.
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: Q4 2025 ·
Methodology ·
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