AnnexonANNX
13F holders, Q1 2025 (March 31)147holders −5
23new positions
28sold out
5famous investors
$1.93avg. 13F price*
At the end of Q1 2025, 147 institutions reported holding Annexon Inc. (ANNX) in their 13F filings, down 5 from Q4 2024. 23 opened new positions and 28 sold out. The largest holders were FMR LLC ($25.6M), BlackRock, Inc. ($16.5M) and BVF Inc. ($13.5M). 5 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Annexon Inc.
- CUSIP
- 03589W102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 23 | $3.1M |
| Exits | 28 | $14.6M |
All 13F filers, Q4 2024 → Q1 2025: 12,553,661 shares bought and 15,210,446 shares sold, net −2,656,785 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 147 holders
| FMR LLC | 0.00% | Reduce -6.8% | 13,262,328 | $25.6M |
| BlackRock, Inc. | 0.00% | Add +0.5% | 8,526,506 | $16.5M |
| BVF Inc. | 0.55% | No change | 7,000,000 | $13.5M |
| Redmile Group, LLC | 1.15% | No change | 6,300,644 | $12.2M |
| Vanguard Group Inc. | 0.00% | Reduce -3.0% | 5,379,659 | $10.4M |
| Bain Capital Life Sciences Investors, LLC | 1.50% | No change | 5,249,069 | $10.1M |
| Bellevue Group AG | 0.22% | No change | 5,157,290 | $10.0M |
| Logos Global Management LP | 1.37% | Add +56.9% | 4,000,000 | $7.7M |
| Ameriprise Financial Inc. | 0.00% | Add +330.1% | 3,985,295 | $7.7M |
| Sio Capital Management, LLC | 1.99% | Add +43.5% | 3,397,786 | $6.6M |
| Tetragon Partners GP Ltd | 2.01% | Add +89.3% | 2,650,000 | $5.1M |
| Candriam S.C.A. | 0.03% | No change | 2,534,230 | $4.9M |
| Geode Capital Management, LLC | 0.00% | Add +3.4% | 2,245,010 | $4.3M |
| Woodline Partners LP | 0.03% | Reduce -21.4% | 2,114,696 | $4.1M |
| State Street Corp. | 0.00% | Reduce -54.8% | 2,039,826 | $3.9M |
| Sphera Funds Management LTD. | 0.84% | Add +41.9% | 1,764,387 | $3.4M |
| JPMorgan Chase & Co. | 0.00% | Reduce -5.3% | 1,431,965 | $2.8M |
| Renaissance Technologies | 0.00% | Add +135.4% | 1,162,437 | $2.2M |
| Bank of America Corp. | 0.00% | Add +3369.3% | 1,038,724 | $2.0M |
| Mutual of America Capital Management LLC | 0.02% | Add +0.1% | 1,030,683 | $2.0M |
| Northern Trust Corp. | 0.00% | Reduce -0.4% | 1,025,925 | $2.0M |
| Massachusetts Financial Services Co. | 0.00% | Add +0.4% | 1,020,417 | $2.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -27.4% | 986,879 | $1.9M |
| Kennedy Capital Management LLC | 0.04% | Reduce -19.9% | 874,726 | $1.7M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -36.1% | 841,582 | $1.6M |
| Walleye Capital LLC | 0.02% | Add +22.3% | 802,913 | $1.5M |
| Sirios Capital Management L P | 0.26% | New | 768,686 | $1.5M |
| Qube Research & Technologies Ltd | 0.00% | Add +59.8% | 737,268 | $1.4M |
| Charles Schwab Investment Management Inc. | 0.00% | Reduce -2.4% | 725,752 | $1.4M |
| Morgan Stanley | 0.00% | Add +8.8% | 701,356 | $1.4M |
| Deerfield Management Company, L.P. | 0.03% | No change | 583,913 | $1.1M |
| Deutsche Bank AG | 0.00% | Add +0.1% | 537,294 | $1.0M |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -52.5% | 524,741 | $1.0M |
| Board of Trustees of The Leland Stanford Junior University | 0.08% | No change | 482,550 | $931K |
| Hennion & Walsh Asset Management, Inc. | 0.04% | Add +11.2% | 477,567 | $922K |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.02% | Add +46.4% | 466,819 | $901K |
| Rhenman & Partners Asset Management AB | 0.10% | Reduce -15.2% | 460,000 | $888K |
| Wellington Management Group LLP | 0.00% | Add +32.9% | 356,480 | $688K |
| Parkman Healthcare Partners LLC | 0.08% | Add +6.2% | 351,436 | $678K |
| Wells Fargo & Company | 0.00% | Add +47.6% | 347,892 | $671K |
| Nuveen, LLC | 0.00% | — | 347,032 | $670K |
| Bank of New York Mellon Corp | 0.00% | Add +25.2% | 288,698 | $557K |
| UBS Group AG | 0.00% | Reduce -18.7% | 267,348 | $516K |
| J. Safra Sarasin Holding AG | 0.01% | Add +63.4% | 254,538 | $491K |
| Acadian Asset Management LLC | 0.00% | Add +31.1% | 203,990 | $393K |
| Susquehanna International Group, LLP | 0.00% | Add +217.0% | 199,225 | $385K |
| American Century Companies Inc. | 0.00% | Add +11.0% | 198,194 | $383K |
| ExodusPoint Capital Management, LP | 0.00% | Add +119.7% | 183,287 | $354K |
| Millennium Management | 0.00% | Add +12.6% | 175,303 | $338K |
| Barclays PLC | 0.00% | Reduce -20.2% | 165,132 | $319K |
| Syon Capital LLC | 0.02% | New | 144,485 | $279K |
| Rhumbline Advisers | 0.00% | Reduce -3.8% | 136,400 | $263K |
| Cinctive Capital Management LP | 0.02% | No change | 135,466 | $261K |
| Swiss National Bank | 0.00% | No change | 135,000 | $261K |
| Manufacturers Life Insurance Company, The | 0.00% | Reduce -15.4% | 134,562 | $260K |
| Squarepoint Ops LLC | 0.00% | Add +132.7% | 132,997 | $257K |
| Alliancebernstein L.P. | 0.00% | No change | 111,300 | $215K |
| Schonfeld Strategic Advisors LLC | 0.00% | Add +135.1% | 111,201 | $215K |
| Jane Street Group, LLC | 0.00% | Add +8.2% | 99,924 | $193K |
| Balyasny Asset Management L.P. | 0.00% | New | 96,752 | $187K |
| Invesco Ltd. | 0.00% | Add +186.7% | 91,409 | $176K |
| Legal & General Group Plc | 0.00% | No change | 85,535 | $165K |
| Park Avenue Securities LLC | 0.00% | Reduce -29.6% | 83,068 | $160K |
| Alps Advisors Inc. | 0.00% | Reduce -4.1% | 82,626 | $159K |
| State of Wisconsin Investment Board | 0.00% | Add +17.9% | 81,636 | $158K |
| Ieq Capital, LLC | 0.00% | New | 80,000 | $154K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +60.7% | 78,857 | $152K |
| HRT Financial LP | 0.00% | New | 78,100 | $150K |
| Citigroup Inc. | 0.00% | Reduce -55.8% | 74,664 | $144K |
| DNB Asset Management AS | 0.00% | Add +56.0% | 74,379 | $144K |
| AQR Capital Management | 0.00% | Add +122.6% | 73,790 | $142K |
| Intech Investment Management LLC | 0.00% | Add +47.1% | 67,265 | $130K |
| California State Teachers Retirement System | 0.00% | No change | 66,375 | $128K |
| Y-Intercept (Hong Kong) Ltd | 0.01% | New | 65,918 | $127K |
| SG Americas Securities, LLC | 0.00% | Add +104.0% | 63,161 | $122K |
| Brevan Howard Capital Management LP | 0.00% | New | 62,074 | $120K |
| Jain Global LLC | 0.00% | New | 61,276 | $118K |
| XTX Topco Ltd | 0.01% | Add +65.4% | 58,130 | $112K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -9.7% | 57,263 | $111K |
| Prudential Financial Inc. | 0.00% | Reduce -66.7% | 57,120 | $110K |
| Driehaus Capital Management LLC | 0.00% | No change | 258,314 | $104K |
| EntryPoint Capital, LLC | 0.05% | New | 53,271 | $103K |
| Franklin Resources Inc. | 0.00% | Reduce -0.4% | 49,123 | $95K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.5% | 47,838 | $92K |
| TD Asset Management Inc | 0.00% | Reduce -65.0% | 46,848 | $90K |
| Point72 Asset Management | 0.00% | Reduce -99.2% | 45,714 | $88K |
| Point72 Europe (London) LLP | 0.01% | Reduce -71.9% | 43,722 | $84K |
| Susquehanna Fundamental Investments, LLC | 0.00% | Reduce -65.8% | 41,011 | $79K |
| Janus Henderson Group PLC | 0.00% | No change | 34,500 | $78K |
| HSBC Holdings PLC | 0.00% | Add +19.9% | 36,935 | $73K |
| MetLife Investment Management, LLC | 0.00% | Reduce -42.4% | 37,411 | $72K |
| Virtus Investment Advisers, LLC | 0.02% | New | 36,399 | $70K |
| Shay Capital LLC | 0.02% | Add +13.4% | 35,162 | $68K |
| New York State Common Retirement Fund | 0.00% | No change | 34,479 | $67K |
| Zurcher Kantonalbank (Zurich Cantonalbank) | 0.00% | Add +164.1% | 34,026 | $66K |
| Forefront Analytics, LLC | 0.06% | Add +74.0% | 28,591 | $55K |
| Voya Investment Management LLC | 0.00% | Reduce -4.0% | 27,455 | $53K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +4.9% | 26,104 | $50K |
| ProShare Advisors LLC | 0.00% | Reduce -20.3% | 25,948 | $50K |
| Comerica Bank | 0.00% | Add +10.5% | 25,607 | $49K |
"% of holder's portfolio" is ANNX's weight in each manager's 13F, not the share of Annexon Inc. the manager owns.