AnnexonANNX
13F holders, Q2 2026 (June 30)216holders −1
28new positions
28sold out
6famous investors
$5.71avg. 13F price*
At the end of Q2 2026, 216 institutions reported holding Annexon Inc. (ANNX) in their 13F filings, down 1 from Q1 2026. 28 opened new positions and 28 sold out. The largest holders were FMR LLC ($111.5M), BlackRock, Inc. ($77.3M) and Redmile Group, LLC ($67.8M). 6 famous investors held it, including Steve Cohen (0.0% of Point72 Asset Management's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio).
- Company
- Annexon Inc.
- CUSIP
- 03589W102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 28 | $52.4M |
| Exits | 28 | $11.9M |
All 13F filers, Q1 2026 → Q2 2026: 42,805,050 shares bought and 20,349,464 shares sold, net +22,455,586 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 216 holders
| FMR LLC | 0.00% | Add +83.5% | 19,518,496 | $111.5M |
| BlackRock, Inc. | 0.00% | Add +23.8% | 13,539,744 | $77.3M |
| Redmile Group, LLC | 4.55% | Reduce -18.4% | 11,869,877 | $67.8M |
| State Street Corp. | 0.00% | Add +42.0% | 9,824,321 | $56.1M |
| BVF Inc. | 1.27% | No change | 8,698,173 | $49.7M |
| Woodline Partners LP | 0.12% | Add +196.3% | 6,925,067 | $39.5M |
| Vanguard Capital Management LLC | 0.00% | Add +15.3% | 6,871,015 | $39.2M |
| Mak Capital One LLC | 4.69% | Add +24.1% | 5,862,180 | $33.5M |
| Goldman Sachs Group Inc. | 0.00% | Add +170.6% | 5,825,579 | $33.3M |
| Siren, L.L.C. | 0.52% | Add +12.6% | 4,458,646 | $25.5M |
| Bain Capital Life Sciences Investors, LLC | 1.51% | Reduce -14.9% | 4,437,731 | $25.3M |
| Bellevue Group AG | 0.49% | Reduce -20.5% | 4,100,016 | $23.4M |
| Geode Capital Management, LLC | 0.00% | Add +19.5% | 4,037,193 | $23.1M |
| MPM Bioimpact LLC | 1.23% | New | 3,544,354 | $20.2M |
| Ameriprise Financial Inc. | 0.00% | Add +1.8% | 3,509,623 | $20.0M |
| Great Point Partners LLC | 4.71% | Add +40.0% | 3,500,000 | $20.0M |
| Adage Capital Partners Gp, L.L.C. | 0.03% | Reduce -18.6% | 3,500,000 | $20.0M |
| Morgan Stanley | 0.00% | Add +14.9% | 3,144,453 | $18.0M |
| Palo Alto Investors LP | 2.33% | No change | 2,948,090 | $16.8M |
| Balyasny Asset Management L.P. | 0.03% | Reduce -27.2% | 2,830,976 | $16.2M |
| Nuveen, LLC | 0.00% | Reduce -34.9% | 2,765,080 | $15.8M |
| Qube Research & Technologies Ltd | 0.02% | Reduce -11.7% | 2,749,961 | $15.7M |
| Vanguard Portfolio Management LLC | 0.00% | Add +51.5% | 2,246,800 | $12.8M |
| Opaleye Management Inc. | 0.89% | Reduce -26.5% | 1,714,451 | $9.8M |
| Logos Global Management LP | 0.37% | New | 1,500,000 | $8.6M |
| Dimensional Fund Advisors LP | 0.00% | Add +62.1% | 1,497,756 | $8.6M |
| Point72 Asset Management | 0.01% | Reduce -26.1% | 1,382,699 | $7.9M |
| Northern Trust Corp. | 0.00% | Add +24.4% | 1,352,046 | $7.7M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +14.1% | 1,257,799 | $7.2M |
| Tetragon Partners GP Ltd | 1.15% | Reduce -3.9% | 1,242,455 | $7.1M |
| Candriam S.C.A. | 0.03% | New | 1,195,142 | $6.8M |
| Millennium Management | 0.00% | Reduce -4.3% | 1,184,931 | $6.8M |
| Vanguard Fiduciary Trust Co. | 0.00% | Add +24.4% | 1,105,450 | $6.3M |
| Massachusetts Financial Services Co. | 0.00% | Add +14.8% | 1,037,366 | $5.9M |
| JPMorgan Chase & Co. | 0.00% | Add +210.1% | 1,004,308 | $5.6M |
| Wells Fargo & Company | 0.00% | Add +40.0% | 978,055 | $5.6M |
| Panagora Asset Management Inc. | 0.02% | New | 967,926 | $5.5M |
| Kennedy Capital Management LLC | 0.09% | Reduce -1.5% | 898,394 | $5.1M |
| Ishara Investments LP | 3.44% | Add +370.6% | 820,000 | $4.7M |
| Ensign Peak Advisors, Inc | 0.01% | Add +28.1% | 800,516 | $4.6M |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 737,935 | $4.2M |
| Y-Intercept (Hong Kong) Ltd | 0.08% | Reduce -44.4% | 734,585 | $4.2M |
| Russell Investments Group, Ltd. | 0.00% | Reduce -0.9% | 705,291 | $4.0M |
| AQR Capital Management | 0.00% | Reduce -11.0% | 691,812 | $4.0M |
| Parkman Healthcare Partners LLC | 0.38% | Reduce -4.9% | 641,029 | $3.7M |
| Acadian Asset Management LLC | 0.00% | Reduce -17.0% | 629,127 | $3.6M |
| UBS Group AG | 0.00% | Reduce -50.0% | 623,094 | $3.6M |
| Deutsche Bank AG | 0.00% | Add +9.7% | 616,489 | $3.5M |
| Bank of America Corp. | 0.00% | Reduce -85.6% | 614,186 | $3.5M |
| Citadel Advisors | 0.00% | Reduce -0.6% | 596,582 | $3.4M |
| Deerfield Management Company, L.P. | 0.04% | No change | 583,913 | $3.3M |
| Sirios Capital Management L P | 0.40% | Reduce -1.0% | 569,276 | $3.3M |
| Schonfeld Strategic Advisors LLC | 0.02% | Add +332.8% | 533,567 | $3.0M |
| Two Sigma Investments, LP | 0.00% | Add +8.8% | 512,796 | $2.9M |
| Hennion & Walsh Asset Management, Inc. | 0.08% | Reduce -0.5% | 507,050 | $2.9M |
| Bank of New York Mellon Corp | 0.00% | Add +26.9% | 501,442 | $2.9M |
| Board of Trustees of The Leland Stanford Junior University | 0.52% | No change | 482,550 | $2.8M |
| Renaissance Technologies | 0.00% | Reduce -15.7% | 459,000 | $2.6M |
| Ikarian Capital, LLC | 0.40% | Reduce -25.9% | 430,244 | $2.5M |
| Moore Capital Management, LP | 0.06% | New | 425,332 | $2.4M |
| Trexquant Investment LP | 0.01% | Add +1.5% | 409,667 | $2.3M |
| Wellington Management Group LLP | 0.00% | Reduce -22.0% | 406,795 | $2.3M |
| Susquehanna Portfolio Strategies, LLC | 0.04% | Add +9.7% | 395,230 | $2.3M |
| Mutual of America Capital Management LLC | 0.02% | Reduce -5.3% | 394,600 | $2.3M |
| Invesco Ltd. | 0.00% | Reduce -56.6% | 330,729 | $1.9M |
| Engineers Gate Manager LP | 0.02% | Add +83.2% | 319,057 | $1.8M |
| DAFNA Capital Management LLC | 0.32% | Add +152.8% | 297,812 | $1.7M |
| Jump Financial, LLC | 0.02% | New | 297,800 | $1.7M |
| State of Wisconsin Investment Board | 0.00% | Add +475.7% | 286,375 | $1.6M |
| D. E. Shaw & Co. | 0.00% | Reduce -62.3% | 265,284 | $1.5M |
| Voloridge Investment Management, LLC | 0.01% | Reduce -45.9% | 250,025 | $1.4M |
| Swiss National Bank | 0.00% | Add +3.6% | 244,600 | $1.4M |
| Citigroup Inc. | 0.00% | Add +665.8% | 235,990 | $1.3M |
| Cinctive Capital Management LP | 0.05% | Reduce -19.7% | 215,748 | $1.2M |
| Marshall Wace, LLP | 0.00% | Reduce -75.5% | 210,607 | $1.2M |
| Rhumbline Advisers | 0.00% | Add +18.7% | 189,578 | $1.1M |
| Sei Investments Co. | 0.00% | Reduce -9.6% | 183,817 | $1.0M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +38.3% | 180,647 | $1.0M |
| Squarepoint Ops LLC | 0.00% | Add +155.0% | 173,285 | $989K |
| Rafferty Asset Management, LLC | 0.00% | Reduce -14.8% | 173,279 | $989K |
| Osaic Holdings, Inc. | 0.00% | Add +11533.1% | 147,624 | $843K |
| Alliancebernstein L.P. | 0.00% | Add +23.7% | 147,240 | $816K |
| California State Teachers Retirement System | 0.00% | Add +1771.7% | 134,259 | $767K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -69.8% | 129,243 | $738K |
| Victory Capital Management Inc. | 0.00% | Add +10.2% | 127,338 | $727K |
| Boothbay Fund Management, LLC | 0.01% | Reduce -27.7% | 120,129 | $686K |
| Ieq Capital, LLC | 0.00% | Reduce -38.7% | 120,010 | $685K |
| J. Goldman & Co LP | 0.02% | Reduce -32.1% | 116,046 | $663K |
| XTX Topco Ltd | 0.01% | Add +39.3% | 112,147 | $640K |
| Gsa Capital Partners LLP | 0.04% | Add +229.3% | 104,378 | $596K |
| Vanguard Global Advisers, LLC | 0.00% | Add +88.8% | 102,067 | $583K |
| Quarry LP | 0.09% | Add +370.6% | 100,000 | $571K |
| SCS Capital Management LLC | 0.01% | No change | 99,000 | $565K |
| Legal & General Group Plc | 0.00% | Add +22.6% | 98,118 | $560K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Add +20.2% | 91,661 | $521K |
| MetLife Investment Management, LLC | 0.00% | Add +25.6% | 91,005 | $520K |
| J. Safra Sarasin Holding AG | 0.01% | No change | 90,487 | $517K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +64.3% | 88,518 | $505K |
| Captrust Financial Advisors | 0.00% | Add +11.0% | 87,909 | $502K |
| Profund Advisors LLC | 0.01% | Reduce -3.8% | 87,509 | $500K |
"% of holder's portfolio" is ANNX's weight in each manager's 13F, not the share of Annexon Inc. the manager owns.