AnnexonANNX
13F holders, Q2 2025 (June 30)129holders −18
17new positions
37sold out
4famous investors
$2.39avg. 13F price*
At the end of Q2 2025, 129 institutions reported holding Annexon Inc. (ANNX) in their 13F filings, down 18 from Q1 2025. 17 opened new positions and 37 sold out. The largest holders were FMR LLC ($37.7M), BlackRock, Inc. ($19.1M) and BVF Inc. ($16.8M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Annexon Inc.
- CUSIP
- 03589W102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 17 | $2.0M |
| Exits | 37 | $3.6M |
All 13F filers, Q1 2025 → Q2 2025: 9,960,618 shares bought and 10,003,415 shares sold, net −42,797 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 129 holders
| FMR LLC | 0.00% | Add +18.3% | 15,695,226 | $37.7M |
| BlackRock, Inc. | 0.00% | Reduce -6.6% | 7,962,368 | $19.1M |
| BVF Inc. | 0.60% | No change | 7,000,000 | $16.8M |
| Redmile Group, LLC | 1.61% | No change | 6,300,644 | $15.1M |
| Vanguard Group Inc. | 0.00% | Reduce -0.3% | 5,366,039 | $12.9M |
| Bain Capital Life Sciences Investors, LLC | 1.58% | No change | 5,249,069 | $12.6M |
| Bellevue Group AG | 0.27% | No change | 5,157,290 | $12.4M |
| Sio Capital Management, LLC | 3.95% | Add +20.5% | 4,095,764 | $9.8M |
| Tetragon Partners GP Ltd | 1.91% | Add +6.0% | 2,810,000 | $6.7M |
| Candriam S.C.A. | 0.04% | No change | 2,534,230 | $6.1M |
| Millennium Management | 0.01% | Add +1334.2% | 2,514,134 | $6.0M |
| Logos Global Management LP | 0.77% | Reduce -39.8% | 2,410,000 | $5.8M |
| Geode Capital Management, LLC | 0.00% | Add +1.8% | 2,284,773 | $5.5M |
| Ameriprise Financial Inc. | 0.00% | Reduce -45.6% | 2,166,178 | $5.2M |
| State Street Corp. | 0.00% | Reduce -2.9% | 1,980,984 | $4.8M |
| Sphera Funds Management LTD. | 1.11% | No change | 1,764,387 | $4.2M |
| Goldman Sachs Group Inc. | 0.00% | Add +93.8% | 1,630,649 | $3.9M |
| Bank of America Corp. | 0.00% | Add +39.9% | 1,452,795 | $3.5M |
| Mutual of America Capital Management LLC | 0.03% | Add +4.7% | 1,078,961 | $2.6M |
| Woodline Partners LP | 0.01% | Reduce -50.2% | 1,053,709 | $2.5M |
| Sirios Capital Management L P | 0.34% | Add +28.7% | 989,577 | $2.4M |
| Massachusetts Financial Services Co. | 0.00% | Reduce -3.2% | 987,513 | $2.4M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -9.8% | 889,863 | $2.1M |
| Kennedy Capital Management LLC | 0.05% | Reduce -2.2% | 855,573 | $2.1M |
| Morgan Stanley | 0.00% | Add +18.7% | 832,540 | $2.0M |
| Walleye Capital LLC | 0.02% | Reduce -1.0% | 794,639 | $1.9M |
| Renaissance Technologies | 0.00% | Reduce -33.1% | 777,900 | $1.9M |
| Northern Trust Corp. | 0.00% | Reduce -27.6% | 743,224 | $1.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +0.4% | 728,389 | $1.7M |
| Deerfield Management Company, L.P. | 0.03% | No change | 583,913 | $1.4M |
| Deutsche Bank AG | 0.00% | Reduce -4.8% | 511,448 | $1.2M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -3.2% | 508,103 | $1.2M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.03% | Add +5.5% | 492,698 | $1.2M |
| Hennion & Walsh Asset Management, Inc. | 0.05% | Add +1.5% | 484,633 | $1.2M |
| Board of Trustees of The Leland Stanford Junior University | 0.13% | No change | 482,550 | $1.2M |
| Acadian Asset Management LLC | 0.00% | Add +130.0% | 469,209 | $1.1M |
| Rhenman & Partners Asset Management AB | 0.14% | No change | 460,000 | $1.1M |
| Qube Research & Technologies Ltd | 0.00% | Reduce -42.4% | 424,720 | $1.0M |
| Parkman Healthcare Partners LLC | 0.11% | Add +15.0% | 404,194 | $970K |
| J. Safra Sarasin Holding AG | 0.02% | Add +49.9% | 381,441 | $915K |
| Wells Fargo & Company | 0.00% | Add +8.4% | 376,974 | $905K |
| AQR Capital Management | 0.00% | Add +350.0% | 332,031 | $797K |
| UBS Group AG | 0.00% | Add +21.6% | 325,122 | $780K |
| Bank of New York Mellon Corp | 0.00% | Add +4.3% | 301,048 | $723K |
| Susquehanna International Group, LLP | 0.00% | Add +33.9% | 266,812 | $640K |
| Schonfeld Strategic Advisors LLC | 0.00% | Add +139.3% | 266,050 | $639K |
| Nuveen, LLC | 0.00% | Reduce -26.3% | 255,918 | $614K |
| Royal Bank of Canada | 0.00% | Add +3487.9% | 245,199 | $588K |
| American Century Companies Inc. | 0.00% | Add +6.6% | 211,195 | $507K |
| Susquehanna Portfolio Strategies, LLC | 0.01% | New | 207,715 | $499K |
| Point72 Europe (London) LLP | 0.03% | Add +373.0% | 206,798 | $496K |
| Two Sigma Investments, LP | 0.00% | New | 201,160 | $483K |
| Barclays PLC | 0.00% | Add +7.6% | 177,628 | $426K |
| Invesco Ltd. | 0.00% | Add +64.5% | 150,414 | $361K |
| Jane Street Group, LLC | 0.00% | Add +46.0% | 145,869 | $350K |
| Alliancebernstein L.P. | 0.00% | Add +26.4% | 140,740 | $338K |
| Rhumbline Advisers | 0.00% | Add +0.8% | 137,536 | $330K |
| Ieq Capital, LLC | 0.00% | Add +69.8% | 135,797 | $326K |
| Cinctive Capital Management LP | 0.02% | No change | 135,466 | $325K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -0.4% | 134,035 | $322K |
| Park Avenue Securities LLC | 0.00% | Add +36.1% | 113,068 | $271K |
| DNB Asset Management AS | 0.00% | Add +33.9% | 99,574 | $239K |
| Bridgeway Capital Management, LLC | 0.01% | New | 97,800 | $235K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +18.6% | 93,500 | $224K |
| Osaic Holdings, Inc. | 0.00% | New | 80,375 | $193K |
| Natixis | 0.00% | New | 77,100 | $185K |
| ExodusPoint Capital Management, LP | 0.00% | Reduce -66.3% | 61,691 | $148K |
| Alps Advisors Inc. | 0.00% | Reduce -28.4% | 59,201 | $142K |
| MetLife Investment Management, LLC | 0.00% | Add +57.8% | 59,022 | $142K |
| Brevan Howard Capital Management LP | 0.00% | Reduce -14.2% | 53,283 | $128K |
| JPMorgan Chase & Co. | 0.00% | Reduce -96.3% | 52,819 | $127K |
| Intech Investment Management LLC | 0.00% | Reduce -21.6% | 52,699 | $126K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -8.5% | 52,405 | $126K |
| TD Asset Management Inc | 0.00% | No change | 46,848 | $112K |
| Quarry LP | 0.03% | Add +105.4% | 43,133 | $104K |
| Allegheny Financial Group | 0.02% | Add +70.2% | 42,900 | $103K |
| Citigroup Inc. | 0.00% | Reduce -49.4% | 37,796 | $91K |
| Citizens Financial Group Inc. | 0.00% | New | 35,000 | $84K |
| Lido Advisors, LLC | 0.00% | Add +75.0% | 35,000 | $84K |
| Virtus Investment Advisers, LLC | 0.03% | Reduce -4.7% | 34,698 | $83K |
| New York State Common Retirement Fund | 0.00% | No change | 34,479 | $83K |
| Virtu Financial LLC | 0.00% | New | 30,597 | $73K |
| HSBC Holdings PLC | 0.00% | Reduce -19.2% | 29,855 | $72K |
| Marshall Wace, LLP | 0.00% | New | 29,989 | $72K |
| Forefront Analytics, LLC | 0.07% | Reduce -3.5% | 27,575 | $66K |
| Voya Investment Management LLC | 0.00% | No change | 27,455 | $66K |
| Comerica Bank | 0.00% | No change | 25,607 | $61K |
| ProShare Advisors LLC | 0.00% | Reduce -8.5% | 23,732 | $57K |
| China Universal Asset Management Co., Ltd. | 0.01% | Add +3.1% | 22,036 | $53K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 20,587 | $49K |
| Quadrature Capital Ltd | 0.00% | Add +15.7% | 20,515 | $49K |
| Driehaus Capital Management LLC | 0.00% | No change | 258,314 | $49K |
| Los Angeles Capital Management LLC | 0.00% | New | 20,196 | $48K |
| Cwm, LLC | 0.00% | Add +212.9% | 17,734 | $43K |
| Coastal Bridge Advisors, LLC | 0.00% | No change | 17,000 | $41K |
| State Board of Administration of Florida Retirement System | 0.00% | No change | 15,607 | $37K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -40.4% | 15,558 | $37K |
| Engineers Gate Manager LP | 0.00% | New | 13,401 | $32K |
| Citadel Advisors | 0.00% | Add +6.5% | 13,267 | $32K |
| Vanguard Personalized Indexing Management, LLC | 0.00% | New | 12,284 | $29K |
"% of holder's portfolio" is ANNX's weight in each manager's 13F, not the share of Annexon Inc. the manager owns.