ANNX · Annexon, Inc. · Shareholders & Ownership
Every disclosed holder of ANNX in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns ANNX
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 179,021,023 | 87.56% |
| Insiders (Forms 3, 4, 5) | 0 | 0.00% |
| 13D/G-only blocks | 20,433,879 | 9.99% |
| Remaining | 4,990,031 | 2.44% |
| Registered funds (N-PORT, not summed) | 59,837,877 | 29.27% |
Shares outstanding: 204,444,933, the issuer's latest cover-page count restated onto today's split basis.
Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of ANNX
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
19,518,496 | ||
| 1.1 |
FMR LLC
13G
CIK 315066 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
19,518,496 | ||
| 1.2 |
Select Biotechnology Portfolio
Fund
S000007486 · Registered fund · May 31, 2026
Fidelity Select Portfolios, not summed
|
5,082,296 | ||
| 1.3 |
Fidelity Stock Selector Small Cap Fund
Fund
S000005453 · Registered fund · Jul 31, 2026
Fidelity Capital Trust, not summed
|
2,067,700 | ||
| 1.4 |
Fidelity Small Cap Growth Fund
Fund
S000007193 · Registered fund · Jul 31, 2026
Fidelity Securities Fund, not summed
|
1,787,580 | ||
| 1.5 |
Fidelity Small Cap Index Fund
Fund
S000033638 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
|
1,696,340 | ||
| 2 |
Redmile Group, LLC
13G
CIK 1425738 · Registered investment adviser · Jul 1, 2026
Rule 13d-1(c), passive investor, not summed
|
17,918,459 | ||
| 2.1 |
Redmile Group, LLC
13F
CIK 1425738 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
11,869,877 | ||
| 3 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
13,539,744 | ||
| 3.1 |
BlackRock, Inc.
13G
CIK 2012383 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
13,128,281 | ||
| 3.2 |
iShares Russell 2000 ETF
Fund
S000004344 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
4,062,168 | ||
| 3.3 |
iShares Russell 2000 Growth ETF
Fund
S000004343 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,430,050 | ||
| 3.4 |
iShares Biotechnology ETF
Fund
S000004350 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
1,009,399 | ||
| 3.5 |
iShares Micro-Cap ETF
Fund
S000004439 · Registered fund · Jun 30, 2026
iShares Trust, not summed
|
519,590 | ||
| 4 |
|
10,342,134 | ||
| 4.1 |
Satter Muneer A
13D
CIK 1315797 · Unknown · Nov 19, 2025
|
10,444,134 | ||
| 5 |
|
9,824,321 | ||
| 5.1 |
STATE STREET CORP
13G
CIK 93751 · Bank · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
9,824,321 | ||
| 5.2 |
State Street(R) SPDR(R) S&P(R) Biotech ETF
Fund
S000010018 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
|
6,233,855 | ||
| 5.3 |
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund
S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
51,200 | ||
| 5.4 |
State Street Total Return V.I.S. Fund
Fund
S000001637 · Registered fund · Jun 30, 2026
STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
|
3,921 | ||
| 5.5 |
State Street Balanced Index Fund
Fund
S000082802 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
|
554 | ||
| 6 |
BIOTECHNOLOGY VALUE FUND L P
13G
CIK 918923 · Unknown · Mar 31, 2026
Rule 13d-1(c), passive investor
|
8,698,173 | ||
| 7 |
|
8,698,173 | ||
| 8 |
Woodline Partners LP
13F
CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,925,067 | ||
| 9 |
VANGUARD CAPITAL MANAGEMENT LLC
13F
CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
6,871,015 | ||
| 10 |
MAK CAPITAL ONE LLC
13F
CIK 1385702 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,862,180 | ||
| 11 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
5,825,579 | ||
| 11.1 |
Goldman Sachs Small Cap Equity Insights Fund
Fund
S000009329 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
286,824 | ||
| 11.2 |
Goldman Sachs Small Cap Value Insights Fund
Fund
S000014929 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
199,659 | ||
| 11.3 |
Goldman Sachs Small Cap Growth Insights Fund
Fund
S000014930 · Registered fund · Jul 31, 2026
Goldman Sachs Trust, not summed
|
139,047 | ||
| 11.4 |
Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund
Fund
S000009355 · Registered fund · Jun 30, 2026
Goldman Sachs Variable Insurance Trust, not summed
|
78,482 | ||
| 11.5 |
Multi-Manager U.S. Small Cap Equity Fund
Fund
S000051363 · Registered fund · Apr 30, 2026
Goldman Sachs Trust II, not summed
|
20,600 | ||
| 12 |
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund
S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
4,970,636 | ||
| 13 |
Siren, L.L.C.
13F
CIK 2005245 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,458,646 | ||
| 14 |
Bain Capital Life Sciences Investors, LLC
13F
CIK 1703031 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,437,731 | ||
| 15 |
Bellevue Group AG
13F
CIK 1674546 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,100,016 | ||
| 16 |
GEODE CAPITAL MANAGEMENT, LLC
13F
CIK 1214717 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,037,193 | ||
| 17 |
MPM BIOIMPACT LLC
13F
CIK 1687078 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,544,354 | ||
| 18 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,509,623 | ||
| 18.1 |
Columbia Small Cap Value Discovery Fund
Fund
S000012102 · Registered fund · Jul 31, 2026
COLUMBIA FUNDS SERIES TRUST I, not summed
|
1,390,319 | ||
| 18.2 |
Columbia Acorn Fund
Fund
S000009184 · Registered fund · Jun 30, 2026
COLUMBIA ACORN TRUST, not summed
|
975,637 | ||
| 18.3 |
Columbia Variable Portfolio - Small Cap Value Discovery Fund
Fund
S000012561 · Registered fund · Jun 30, 2026
COLUMBIA FUNDS VARIABLE INSURANCE TRUST, not summed
|
251,535 | ||
| 18.4 |
Columbia Variable Portfolio - Acorn Fund
Fund
S000008981 · Registered fund · Jun 30, 2026
COLUMBIA FUNDS VARIABLE SERIES TRUST, not summed
|
187,223 | ||
| 18.5 |
Columbia Integrated Small Cap Growth Fund
Fund
S000074122 · Registered fund · May 31, 2026
Columbia Funds Series Trust II, not summed
|
17,787 | ||
| 19 |
ADAGE CAPITAL PARTNERS GP, L.L.C.
13F
CIK 1165408 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,500,000 | ||
| 20 |
GREAT POINT PARTNERS LLC
13F
CIK 1281446 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,500,000 | ||
| 21 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,144,453 | ||
| 22 |
Palo Alto Investors LP
13F
CIK 1306923 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,948,090 | ||
| 23 |
Balyasny Asset Management L.P.
13F
CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,830,976 | ||
| 24 |
|
2,765,080 | ||
| 24.1 |
Nuveen Quant Small Cap Equity Fund
Fund
S000005386 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
925,290 | ||
| 24.2 |
College Retirement Equities Fund - Total Global Stock Account
Fund
S000005080 · Registered fund · Jun 30, 2026
College Retirement Equities Fund, not summed
|
840,499 | ||
| 24.3 |
Nuveen Quant Small/Mid Cap Equity Fund
Fund
S000054623 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
554,170 | ||
| 24.4 |
Nuveen Small Cap Blend Index Fund
Fund
S000005367 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
205,966 | ||
| 24.5 |
Nuveen Equity Index Fund
Fund
S000005360 · Registered fund · Jul 31, 2026
TIAA-CREF Funds, not summed
|
119,321 | ||
| 25 |
Qube Research & Technologies Ltd
13F
CIK 1729829 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,749,961 | ||
| 26 |
VANGUARD PORTFOLIO MANAGEMENT LLC
13F
CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,246,800 | ||
| 27 |
VANGUARD EXTENDED MARKET INDEX FUND
Fund
S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
|
1,754,999 | ||
| 28 |
Opaleye Management Inc.
13F
CIK 1595855 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,714,451 | ||
| 29 |
Logos Global Management LP
13F
CIK 1792126 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,500,000 | ||
| 30 |
DIMENSIONAL FUND ADVISORS LP
13F
CIK 354204 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,497,756 | ||
| 30.1 |
U.S. SMALL CAP PORTFOLIO
Fund
S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
374,366 | ||
| 30.2 |
Dimensional U.S. Small Cap ETF
Fund
S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
326,558 | ||
| 30.3 |
U.S. MICRO CAP PORTFOLIO
Fund
S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
273,381 | ||
| 30.4 |
Dimensional U.S. Core Equity 2 ETF
Fund
S000070903 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
|
218,518 | ||
| 30.5 |
U.S. CORE EQUITY 2 PORTFOLIO
Fund
S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
|
38,801 | ||
| 31 |
Point72 Asset Management, L.P.
13F
CIK 1603466 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,382,699 | ||
| 32 |
NORTHERN TRUST CORP
13F
CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,352,046 | ||
| 32.1 |
Small Cap Index Fund
Fund
S000001245 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
78,435 | ||
| 32.2 |
Small Cap Core Fund
Fund
S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
|
4,014 | ||
| 33 |
Y-Intercept (Hong Kong) Ltd
13F
CIK 1772875 · Exempt reporting adviser · Sep 30, 2026
|
1,297,235 | ||
| 34 |
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F
CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,257,799 | ||
| 34.1 |
Schwab U.S. Small-Cap ETF
Fund
S000026636 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
637,833 | ||
| 34.2 |
Schwab Small-Cap Index Fund
Fund
S000005912 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
376,048 | ||
| 34.3 |
Schwab Total Stock Market Index Fund
Fund
S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
|
84,264 | ||
| 34.4 |
Schwab U.S. Broad Market ETF
Fund
S000026631 · Registered fund · May 31, 2026
SCHWAB STRATEGIC TRUST, not summed
|
79,390 | ||
| 35 |
Tetragon Partners GP Ltd
13F
CIK 1515070 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,242,455 | ||
| 36 |
Candriam S.C.A.
13F
CIK 1537014 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,195,142 | ||
| 37 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,184,931 | ||
| 38 |
VANGUARD FIDUCIARY TRUST CO
13F
CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,105,450 | ||
| 39 |
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
13F
CIK 912938 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,037,366 | ||
| 39.1 |
MFS New Discovery Fund
Fund
S000000765 · Registered fund · May 31, 2026
MFS SERIES TRUST I, not summed
|
668,226 | ||
| 39.2 |
MFS New Discovery Series
Fund
S000002680 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST, not summed
|
232,809 | ||
| 39.3 |
MFS Blended Research Small Cap Equity Fund
Fund
S000050659 · Registered fund · May 31, 2026
MFS SERIES TRUST X, not summed
|
86,459 | ||
| 39.4 |
MFS Blended Research Small Cap Equity Portfolio
Fund
S000008071 · Registered fund · Jun 30, 2026
MFS VARIABLE INSURANCE TRUST III, not summed
|
21,785 | ||
| 39.5 |
MFS Global Alternative Strategy Fund
Fund
S000019515 · Registered fund · Jul 31, 2026
MFS Series Trust XV, not summed
|
1,997 | ||
| 40 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,004,308 | ||
| 41 |
WELLS FARGO & COMPANY/MN
13F
CIK 72971 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
978,055 | ||
| 42 |
Venrock Healthcare Capital Partners II, L.P.
13G
CIK 1602264 · Unknown · Dec 31, 2023
Rule 13d-1(c), passive investor
|
968,679 | ||
| 43 |
PANAGORA ASSET MANAGEMENT INC
13F
CIK 883677 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
967,926 | ||
| 44 |
KENNEDY CAPITAL MANAGEMENT LLC
13F
CIK 884589 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
898,394 | ||
| 45 |
Ishara Investments LP
13F
CIK 2111609 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
820,000 | ||
| 46 |
Ensign Peak Advisors, Inc
13F
CIK 1454984 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
800,516 | ||
| 47 |
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
13F
CIK 1164508 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
737,935 | ||
| 48 |
Russell Investments Group, Ltd.
13F
CIK 1692234 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
705,291 | ||
| 48.1 |
U.S. Small Cap Equity Fund
Fund
S000001586 · Registered fund · Jul 31, 2026
RUSSELL INVESTMENT CO, not summed
|
127,169 | ||
| 48.2 |
U.S. Small Cap Equity Fund
Fund
S000006864 · Registered fund · Jun 30, 2026
RUSSELL INVESTMENT FUNDS, not summed
|
28,154 | ||
| 48.3 |
Russell Investments U.S. Small Cap Equity ETF
Fund
S000089990 · Registered fund · Jun 30, 2026
Russell Investments Exchange Traded Funds, not summed
|
15,876 | ||
| 49 |
AQR CAPITAL MANAGEMENT LLC
13F
CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
691,812 | ||
| 50 |
VANGUARD RUSSELL 2000 INDEX FUND
Fund
S000030003 · Registered fund · May 31, 2026
VANGUARD SCOTTSDALE FUNDS, not summed
|
677,146 |
52 more nested rows are not shown here; Every filing lists them all.
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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