Annexon, Inc. - Common Stock, par value $0.001 per share (ANNX)

CUSIP: 03589W102

Q1 2025 13F Holders as of 31 Mar 2025

Security type / class
Equity / Common Stock, par value $0.001 per share
Total 13F shares
99,491,910
Total 13F value
$192,036,870
Holder snapshot 6 visible 7 signals
Share change
-2,651,266
Put/Call ratio
225%
SEC-reported price per share
$1.93
Number of holders
146
Value change
-$14,234,585
Number of buys
78
Open additional details 1 more signal available
Number of sells
67
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
180,994,535

Security key

03589W102

Report period

Q1 2025

Institutions

146

Top holders

10

ANNX full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2025 Previous quarter: Q4 2024 Annexon, Inc. SEC filings Annexon, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of ANNX - Annexon, Inc. - Common Stock, par value $0.001 per share (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
Bain Capital Life Science...
Disclosed value leader
FMR LLC
Comparable rows
15/15
Latest evidence
31 Dec 2024
13D/G 13F 3/4/5 Lead comparable stake: 4.9% 13D/G row: Bain Capital Life Sciences Fund, L.P. Showing 1-6 of 15 holder rows.

Quick read

Bain Capital Life Sciences Fund, L.P. leads the comparable SEC ownership view at 4.9%.

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 Bain Capital Life Sciences Fund, L.P.'s linked filing trail.
Comparable ownership Top 5
Bain Capital Life Sciences Fund, ... 4.9%
Point72 Asset Management, L.P. 0.1%
FMR LLC 7.9%
BlackRock, Inc. 4.7%
Alerce Investment Management, L.P. 4.1%

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
Bain Capital Life Sciences Fund, L.P.
13D/G
BCLS I Investco, LP
13D/G
4.9%
$9,973,231
5,249,069 shares
 $0 31 Dec 2024
Point72 Asset Management, L.P.
13F 13D/G
Company
13F 13D/G
0.1%
from 13D/G
$28,865,465
5,626,796 shares
 — 31 Dec 2024
FMR LLC
13F
Company
13F
7.9%
$72,971,085
14,224,383 shares
 — 31 Dec 2024
BlackRock, Inc.
13F
Company
13F
4.7%
$43,534,138
8,486,187 shares
 — 31 Dec 2024
Alerce Investment Management, L.P.
13F
Company
13F
4.1%
$37,992,903
7,406,024 shares
 — 31 Dec 2024
BVF INC/IL
13F
Company
13F
3.9%
$35,910,000
7,000,000 shares
 — 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 Q1 2025

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
146
Shares
99,491,910
Rows available
146
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 Q1 2025 vs Q4 2024 Across Filers

Q4 2024 holders
151
Q1 2025 holders
146
Holder diff
-5
Investor Q4 2024 Shares Q1 2025 Shares Share Diff Share Chg % Q4 2024 value Q1 2025 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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