Security key
03589W102
- Security type / class
- Equity / COMMON STOCK
- Total 13F shares
- 178,363,906
- Total 13F value
- $1,018,283,023
- Share change
- +22,671,882
- Put/Call ratio
- 25%
- SEC-reported price per share
- $5.71
- Number of holders
- 216
- Value change
- +$129,713,514
- Number of buys
- 108
- Number of sells
- 107
- Shares outstanding
- 163,738,683
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q2 2026
Institutions
216
Top holders
10
ANNX full security history
Ownership snapshot
Full 13F holder table
Annexon, Inc. SEC filings
Annexon, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ANNX - Annexon, Inc. - COMMON STOCK (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
FMR LLC
Disclosed value leader
FMR LLC
Comparable rows
15/15
Latest evidence
30 Jun 2026
13D/G
13F
3/4/5
Lead comparable stake: 12%
13D/G row: FMR LLC
Showing 1-6 of 15 holder rows.
Quick read
FMR LLC leads the comparable SEC ownership view at 12%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens FMR LLC's linked filing trail.
Comparable ownership
Top 5
FMR LLC
12%
BlackRock, Inc.
8%
Satter Muneer A.
7.2%
STATE STREET CORP
6%
BIOTECHNOLOGY VALUE FUND L P
5.4%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
Company
|
12%
|
$111,456,470
19,518,496 shares
|
+$53,083,097 | 30 Jun 2026 |
| BlackRock, Inc. |
13D/G
13F
Company
|
8%
|
$74,962,485
13,128,281 shares
|
+$24,321,893 | 30 Jun 2026 |
| Satter Muneer A. |
3/4/5
13D/G
Director
|
7.2%
from 13D/G
|
$55,950,944
10,407,134 shares
mixed-class rows
|
+$11,974,802 | 11 Jun 2026 |
| STATE STREET CORP |
13D/G
13F
STATE STREET CORPORATION · Company
|
6%
|
$58,552,953
9,824,321 shares
|
$0 | 30 Jun 2026 |
| BIOTECHNOLOGY VALUE FUND L P |
13D/G
BVF PARTNERS L P/IL
|
5.4%
|
$48,187,878
8,698,173 shares
|
$0 | 31 Mar 2026 |
| Bain Capital Life Sciences Fund, L.P. |
13D/G
BCLS I Investco, LP
|
4.9%
|
$9,973,231
5,249,069 shares
|
$0 | 31 Dec 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q2 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
216
Shares
178,363,906
Rows available
216
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q2 2026 vs Q1 2026 Across Filers
Q1 2026 holders
217
Q2 2026 holders
216
Holder diff
-1
| Investor | Q1 2026 Shares | Q2 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q2 2026 value | Value change | Value Chg % |
|---|