ANNEXON INC (ANNX)
Institutional ownership reported to the SEC as of Q2 2026, across 24 quarters.
209
Reporting holders
$1.1B
Reported value
1.0%
Held as options
-2
Holder change
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| FMR LLC | $111.5M | 19,518,496 | 0.00% | 24q | +83.5%+$50.7M |
| BlackRock, Inc. | $77.3M | 13,539,744 | 0.00% | 8q | +23.8%+$14.9M |
| Redmile Group, LLC | $67.8M | 11,869,877 | 4.55% | 24q | -18.4%-$15.3M |
| STATE STREET CORP | $56.1M | 9,824,321 | 0.00% | 24q | +42.0%+$16.6M |
| Palo Alto Investors LP | $50.5M | 8,844,270 | 2.33% | 3q | +200.0%+$33.7M |
| BVF INC/IL | $49.7M | 8,698,173 | 1.27% | 11q | HELD |
| Woodline Partners LP | $39.5M | 6,925,067 | 0.12% | 17q | +196.3%+$26.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | $39.2M | 6,871,015 | 0.00% | 2q | +15.4%+$5.2M |
| MAK CAPITAL ONE LLC | $33.5M | 5,862,180 | 4.69% | 3q | +24.1%+$6.5M |
| GOLDMAN SACHS GROUP INC | $33.3M | 5,825,579 | 0.00% | 23q | +170.6%+$21.0M |
| Siren, L.L.C. | $25.5M | 4,458,646 | 0.52% | 2q | +12.6%+$2.9M |
| Bain Capital Life Sciences Investors, LLC | $25.3M | 4,437,731 | 1.51% | 24q | -14.9%-$4.4M |
| Bellevue Group AG | $23.4M | 4,100,016 | 0.49% | 10q | -20.5%-$6.0M |
| GEODE CAPITAL MANAGEMENT, LLC | $23.1M | 4,037,193 | 0.00% | 24q | +19.5%+$3.8M |
| MPM BIOIMPACT LLC | $20.2M | 3,544,354 | 1.23% | new | NEW |
| AMERIPRISE FINANCIAL INC | $20.0M | 3,509,623 | 0.00% | 8q | -49.1%-$19.3M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $20.0M | 3,500,000 | 0.03% | 4q | -18.6%-$4.6M |
| GREAT POINT PARTNERS LLC | $20.0M | 3,500,000 | 3.78% | 2q | +40.0%+$5.7M |
| MORGAN STANLEY | $18.0M | 3,144,453 | 0.00% | 24q | +14.9%+$2.3M |
| Balyasny Asset Management L.P. | $16.2M | 2,830,976 | 0.02% | 4q | -27.2%-$6.0M |
| Nuveen, LLC | $15.8M | 2,765,080 | 0.00% | 6q | -34.9%-$8.5M |
| Qube Research & Technologies Ltd | $15.7M | 2,749,961 | 0.01% | 10q | -11.7%-$2.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $12.8M | 2,246,800 | 0.00% | 2q | +51.5%+$4.4M |
| Opaleye Management Inc. | $9.8M | 1,714,451 | 0.89% | 4q | -26.5%-$3.5M |
| Logos Global Management LP | $8.6M | 1,500,000 | 0.37% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $8.6M | 1,497,756 | 0.00% | 19q | +62.1%+$3.3M |
| Point72 Asset Management, L.P. | $7.9M | 1,382,699 | 0.01% | 4q | -26.1%-$2.8M |
| NORTHERN TRUST CORP | $7.7M | 1,352,046 | 0.00% | 24q | +24.4%+$1.5M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $7.2M | 1,257,799 | 0.00% | 24q | +14.1%+$887.1K |
| Sixth Street Partners Management Company, L.P. | $7.2M | 1,257,799 | 0.00% | new | NEW |
| Tetragon Partners GP Ltd | $7.1M | 1,242,455 | 1.12% | 9q | -3.9%-$285.5K |
| Candriam S.C.A. | $6.8M | 1,195,142 | 0.03% | new | NEW |
| MILLENNIUM MANAGEMENT LLC | $6.8M | 1,184,931 | 0.00% | 20q | -4.3%-$306.9K |
| VANGUARD FIDUCIARY TRUST CO | $6.3M | 1,105,450 | 0.00% | 2q | +24.4%+$1.2M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $5.9M | 1,037,366 | 0.00% | 24q | +14.8%+$765.1K |
| JPMORGAN CHASE & CO | $5.6M | 1,004,308 | 0.00% | 24q | +210.1%+$3.8M |
| WELLS FARGO & COMPANY/MN | $5.6M | 978,055 | 0.00% | 24q | -30.0%-$2.4M |
| PANAGORA ASSET MANAGEMENT INC | $5.5M | 967,926 | 0.02% | new | NEW |
| CITADEL ADVISORS LLC | $5.3M | 596,582 | 0.00% | 24q | -0.6%-$31.3K |
| KENNEDY CAPITAL MANAGEMENT LLC | $5.1M | 898,394 | 0.09% | 12q | -1.5%-$79.5K |
| Ishara Investments LP | $4.7M | 820,000 | 3.44% | 3q | +370.6%+$3.7M |
| Ensign Peak Advisors, Inc | $4.6M | 800,516 | 0.01% | 2q | -36.0%-$2.6M |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $4.2M | 737,935 | 0.00% | new | NEW |
| Y-Intercept (Hong Kong) Ltd | $4.2M | 734,585 | 0.08% | 2q | -44.3%-$3.3M |
| Russell Investments Group, Ltd. | $4.0M | 705,291 | 0.00% | 4q | -0.9%-$34.8K |
| AQR CAPITAL MANAGEMENT LLC | $4.0M | 691,812 | 0.00% | 10q | -11.0%-$487.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3.7M | 39,394 | 0.00% | 19q | -75.2%-$11.1M |
| Parkman Healthcare Partners LLC | $3.7M | 641,029 | 0.37% | 10q | -4.9%-$188.3K |
| UBS Group AG | $3.6M | 623,094 | 0.00% | 13q | -50.0%-$3.6M |
| DEUTSCHE BANK AG\ | $3.5M | 616,489 | 0.00% | 11q | +9.7%+$310.1K |
| BANK OF AMERICA CORP /DE/ | $3.5M | 614,186 | 0.00% | 24q | -85.6%-$20.8M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | $3.3M | 583,913 | 0.03% | 24q | HELD |
| SIRIOS CAPITAL MANAGEMENT L P | $3.3M | 569,276 | 0.40% | 6q | -1.0%-$33.0K |
| Schonfeld Strategic Advisors LLC | $3.0M | 533,567 | 0.01% | 18q | +332.8%+$2.3M |
| TWO SIGMA INVESTMENTS, LP | $2.9M | 512,796 | 0.00% | 5q | +8.8%+$236.4K |
| Hennion & Walsh Asset Management, Inc. | $2.9M | 507,050 | 0.08% | 9q | -0.5%-$15.1K |
| Bank of New York Mellon Corp | $2.9M | 501,442 | 0.00% | 16q | +26.9%+$607.7K |
| Board of Trustees of The Leland Stanford Junior University | $2.8M | 482,550 | 0.52% | 24q | HELD |
| RENAISSANCE TECHNOLOGIES LLC | $2.6M | 459,000 | 0.00% | 19q | -15.7%-$487.1K |
| Ikarian Capital, LLC | $2.5M | 430,244 | 0.26% | 3q | -25.9%-$856.5K |
| MOORE CAPITAL MANAGEMENT, LP | $2.4M | 425,332 | 0.04% | new | NEW |
| Trexquant Investment LP | $2.3M | 409,667 | 0.01% | 2q | +1.5%+$34.3K |
| WELLINGTON MANAGEMENT GROUP LLP | $2.3M | 406,795 | 0.00% | 3q | -22.0%-$654.3K |
| Susquehanna Portfolio Strategies, LLC | $2.3M | 395,230 | 0.04% | 5q | +9.7%+$199.3K |
| MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC | $2.3M | 394,600 | 0.02% | 9q | -5.3%-$126.2K |
| DIADEMA PARTNERS LP | $2.2M | 27,516 | 0.27% | 3q | -79.3%-$8.3M |
| Invesco Ltd. | $1.9M | 330,729 | 0.00% | 13q | -56.7%-$2.5M |
| SIMPLEX TRADING, LLC | $1.8M | options only | 0.00% | 10q | OPTIONS |
| Engineers Gate Manager LP | $1.8M | 319,057 | 0.02% | 2q | +83.2%+$827.5K |
| DAFNA Capital Management LLC | $1.7M | 297,812 | 0.32% | 3q | +152.8%+$1.0M |
| Jump Financial, LLC | $1.7M | 297,800 | 0.01% | new | NEW |
| STATE OF WISCONSIN INVESTMENT BOARD | $1.6M | 286,375 | 0.00% | 2q | +475.7%+$1.4M |
| D. E. Shaw & Co., Inc. | $1.5M | 265,284 | 0.00% | 3q | -62.3%-$2.5M |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | $1.4M | 250,025 | 0.01% | 2q | -45.9%-$1.2M |
| Swiss National Bank | $1.4M | 244,600 | 0.00% | 2q | +3.6%+$49.1K |
| CITIGROUP INC | $1.3M | 235,990 | 0.00% | 24q | +665.8%+$1.2M |
| Cinctive Capital Management LP | $1.2M | 215,748 | 0.05% | 10q | -19.7%-$302.0K |
| MARSHALL WACE, LLP | $1.2M | 210,607 | 0.00% | 3q | -75.6%-$3.7M |
| RHUMBLINE ADVISERS | $1.1M | 189,578 | 0.00% | 13q | +18.7%+$170.8K |
| SEI INVESTMENTS CO | $1.0M | 183,817 | 0.00% | 3q | -9.6%-$110.9K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $1.0M | 180,647 | 0.00% | 2q | +38.3%+$285.5K |
| Squarepoint Ops LLC | $989.5K | 173,285 | 0.00% | 2q | +155.0%+$601.4K |
| Rafferty Asset Management, LLC | $989.4K | 173,279 | 0.00% | 3q | -14.8%-$171.2K |
| OSAIC HOLDINGS, INC. | $842.9K | 147,624 | 0.00% | 5q | +11533.1%+$835.7K |
| ALLIANCEBERNSTEIN L.P. | $815.7K | 147,240 | 0.00% | 13q | +23.7%+$156.2K |
| VICTORY CAPITAL MANAGEMENT INC | $727.1K | 127,338 | 0.00% | 9q | +10.2%+$67.4K |
| BOOTHBAY FUND MANAGEMENT, LLC | $685.9K | 120,129 | 0.01% | 3q | -27.7%-$262.9K |
| IEQ CAPITAL, LLC | $685.3K | 120,010 | 0.00% | 6q | -38.7%-$432.6K |
| J. Goldman & Co LP | $662.6K | 116,046 | 0.02% | 4q | -32.1%-$312.7K |
| XTX Topco Ltd | $640.4K | 112,147 | 0.01% | 4q | +39.3%+$180.7K |
| Vanguard Global Advisers, LLC | $582.8K | 102,067 | 0.00% | 2q | +88.8%+$274.2K |
| JANE STREET GROUP, LLC | $573.9K | options only | 0.00% | 11q | OPTIONS |
| Quarry LP | $571.0K | 100,000 | 0.05% | 8q | +370.6%+$449.7K |
| SCS Capital Management LLC | $565.3K | 99,000 | 0.01% | 2q | HELD |
| Legal & General Group Plc | $560.3K | 98,118 | 0.00% | 13q | +22.6%+$103.2K |
| GROUP ONE TRADING LLC | $527.0K | 10,087 | 0.00% | 10q | HELD |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $520.6K | 91,661 | 0.00% | 9q | +20.2%+$87.5K |
| MetLife Investment Management, LLC | $519.6K | 91,005 | 0.00% | 10q | +25.6%+$106.0K |
| J. Safra Sarasin Holding AG | $516.7K | 90,487 | 0.01% | 7q | HELD |
| Zurcher Kantonalbank (Zurich Cantonalbank) | $505.4K | 88,518 | 0.00% | 2q | +64.3%+$197.9K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-07 | 13G | STATE STREET CORPORATION | 6.0% |
| 2026-07-27 | 13G/A | BlackRock, Inc. | 8.0% |
| 2026-07-08 | 13G/A | FMR LLCwith 1 co-filers | 11.9% |
| 2026-07-08 | 13G/A | Redmile Group, LLCwith 2 co-filers | 9.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 209 | $1.1B | 184,418,478 | 27 | 75 | 80 | 1.0% |
| Q1 2026 | 211 | $890.5M | 159,571,696 | 56 | 82 | 45 | 0.8% |
| Q4 2025 | 159 | $687.4M | 135,548,545 | 39 | 68 | 27 | 1.0% |
| Q3 2025 | 136 | $306.2M | 100,164,217 | 30 | 47 | 34 | 0.2% |
| Q2 2025 | 120 | $236.5M | 98,473,017 | 15 | 46 | 31 | 0.1% |
| Q1 2025 | 137 | $190.2M | 98,594,882 | 22 | 46 | 33 | 0.1% |
| Q4 2024 | 142 | $568.5M | 110,593,003 | 20 | 58 | 33 | 0.3% |
| Q3 2024 | 132 | $651.1M | 109,725,256 | 18 | 50 | 36 | 0.4% |
| Q2 2024 | 135 | $576.0M | 110,477,809 | 42 | 50 | 31 | 6.1% |
| Q1 2024 | 117 | $694.3M | 94,083,552 | 39 | 36 | 22 | 2.8% |
| Q4 2023 | 90 | $358.8M | 79,201,968 | 14 | 33 | 23 | 0.1% |
| Q3 2023 | 86 | $122.3M | 51,891,701 | 12 | 26 | 24 | 0.3% |
| Q2 2023 | 88 | $185.3M | 52,387,496 | 28 | 32 | 17 | 0.9% |
| Q1 2023 | 86 | $170.3M | 43,935,391 | 28 | 26 | 11 | 0.9% |
| Q4 2022 | 69 | $205.9M | 38,875,205 | 13 | 18 | 15 | 2.4% |
| Q3 2022 | 74 | $299.0M | 47,562,825 | 11 | 23 | 20 | 2.2% |
| Q2 2022 | 77 | $148.2M | 38,411,032 | 22 | 10 | 33 | 2.3% |
| Q1 2022 | 99 | $106.0M | 38,728,501 | 23 | 33 | 24 | 0.1% |
| Q4 2021 | 94 | $448.2M | 38,812,012 | 24 | 32 | 21 | 0.4% |
| Q3 2021 | 82 | $708.6M | 38,056,651 | 16 | 26 | 25 | 0.0% |
| Q2 2021 | 74 | $873.7M | 38,854,734 | 13 | 33 | 13 | 0.0% |
| Q1 2021 | 72 | $1.0B | 37,426,974 | 7 | 36 | 12 | 0.0% |
| Q4 2020 | 70 | $904.3M | 36,208,935 | 14 | 30 | 13 | 0.0% |
| Q3 2020 | 65 | $1.0B | 34,842,574 | 65 | 0 | 0 | 0.0% |