What does CUSIP 03589W102 represent in this 13F holders report?

CUSIP 03589W102 is the security identifier for ANNX - Annexon, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ANNX - Annexon, Inc. - Common Stock in Q1 2026?

38 institutional investors reported ANNX - Annexon, Inc. - Common Stock for Q1 2026. Use the holders table for investor-level position and value details.

Annexon, Inc. - Common Stock (ANNX)

CUSIP: 03589W102

Q1 2026 13F Holders as of 31 Mar 2026

Type / Class: Equity / Common Stock
Shares outstanding: 155,837,030
Total 13F shares: 7,918,043
Share change: +3,740,631
Total reported value: $43,864,661
Price per share: $5.54
Number of holders: 38
Value change: +$20,788,203
Number of buys: 30
Number of sells: 7

Quarterly Holders Quick Answers

What is CUSIP 03589W102?
CUSIP 03589W102 identifies ANNX - Annexon, Inc. - Common Stock in SEC institutional holdings data.

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Previous quarter: Q4 2025

Recent filing periods for CUSIP 03589W102:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ANNX - Annexon, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Redmile Group, LLC	13D/G 13F	Company	9.9%	15,427,866	$85,778,935	$0	31 Dec 2025	13D/G 13F
FMR LLC	13D/G 13F	Company	7.1%	10,222,470	$51,316,801	-$4,310,639	31 Dec 2025	13D/G 13F
BVF INC/IL	13F	Company	5.9%	9,128,080	$45,822,962	—	31 Dec 2025	13F
BlackRock, Inc.	13F 13D/G	Company	6.1% from 13D/G	8,960,434	$44,981,380	—	31 Dec 2025	13F 13D/G
Muneer A. Satter	3/4/5 13D/G	Director · Satter Muneer A	7.2% from 13D/G	9,783,637 mixed-class rows	$41,638,566	+$8,655,784	20 Nov 2025	3/4/5 13D/G
VANGUARD GROUP INC	13F	Company	5%	7,753,387	$38,922,003	—	31 Dec 2025	13F
ADAGE CAPITAL PARTNERS GP, L.L.C.	13F	Company	3.5%	5,500,000	$27,610,000	—	31 Dec 2025	13F
Bain Capital Life Sciences Investors, LLC	13F 3/4/5	Company · 10%+ Owner	3.4%	5,249,069	$26,350,326	—	31 Dec 2025	13F 3/4/5
Bellevue Group AG	13F	Company	3.3%	5,157,290	$25,889,596	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	3%	4,652,185	$23,353,969	—	31 Dec 2025	13F
AMERIPRISE FINANCIAL INC	13F	Company	2.8%	4,348,782	$21,830,887	—	31 Dec 2025	13F
Woodline Partners LP	13F	Company	2.6%	4,000,074	$20,080,371	—	31 Dec 2025	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	2.1%	3,299,256	$16,562,265	—	31 Dec 2025	13F
Longaeva Partners L.P.	13F	Company	2%	3,100,000	$15,562,000	—	31 Dec 2025	13F
MAK CAPITAL ONE LLC	13F	Company	1.9%	2,958,527	$14,851,806	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	1.9%	2,915,324	$14,634,927	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.9%	2,902,896	$14,576,148	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	1.8%	2,856,143	$14,337,838	—	31 Dec 2025	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	1.8%	2,836,857	$14,241,022	—	31 Dec 2025	13F
Opaleye Management Inc.	13F	Company	1.7%	2,600,000	$13,052,000	—	31 Dec 2025	13F
Palo Alto Investors LP	13F	Company	1.5%	2,384,192	$11,968,644	—	31 Dec 2025	13F
Qube Research & Technologies Ltd	13F	Company	1.5%	2,381,479	$11,955,025	—	31 Dec 2025	13F
Tetragon Partners GP Ltd	13F	Company	1.3%	2,032,455	$10,202,924	—	31 Dec 2025	13F
Bain Capital Life Sciences Fund, L.P.	13D/G	BCLS I Investco, LP	4.9%	5,249,069	$9,973,231	$0	31 Dec 2024	13D/G
GOLDMAN SACHS GROUP INC	13F	Company	1.1%	1,768,745	$8,879,100	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	1%	1,605,581	$8,060,016	—	31 Dec 2025	13F
SPHERA FUNDS MANAGEMENT LTD.	13F	Company	0.84%	1,316,212	$6,607,384	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.68%	1,057,060	$5,306,441	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	0.67%	1,046,221	$5,252,029	—	31 Dec 2025	13F
J. Goldman & Co LP	13F	Company	0.64%	993,795	$4,988,851	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	0.62%	972,449	$4,881,694	—	31 Dec 2025	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	0.58%	903,439	$4,535,264	—	31 Dec 2025	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	0.55%	861,245	$4,321,000	—	31 Dec 2025	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	0.52%	802,600	$4,029,052	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.51%	792,000	$3,975,840	—	31 Dec 2025	13F
AQR CAPITAL MANAGEMENT LLC	13F	Company	0.5%	776,307	$3,897,061	—	31 Dec 2025	13F
Ishara Investments LP	13F	Company	0.48%	750,000	$3,765,000	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	0.46%	718,680	$3,607,910	—	31 Dec 2025	13F
SIRIOS CAPITAL MANAGEMENT L P	13F	Company	0.46%	710,256	$3,565,485	—	31 Dec 2025	13F
JACOBS LEVY EQUITY MANAGEMENT, INC	13F	Company	0.44%	683,879	$3,433,073	—	31 Dec 2025	13F
Russell Investments Group, Ltd.	13F	Company	0.44%	683,016	$3,428,739	—	31 Dec 2025	13F
MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC	13F	Company	0.41%	642,038	$3,223,031	—	31 Dec 2025	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	0.41%	639,902	$3,212,308	—	31 Dec 2025	13F
Parkman Healthcare Partners LLC	13F	Company	0.39%	601,202	$3,018,034	—	31 Dec 2025	13F
DEERFIELD MANAGEMENT COMPANY, L.P.	13F	Company	0.37%	583,913	$2,931,243	—	31 Dec 2025	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.37%	573,748	$2,880,214	—	31 Dec 2025	13F
DEUTSCHE BANK AG\	13F	Company	0.36%	560,744	$2,814,935	—	31 Dec 2025	13F
Hennion & Walsh Asset Management, Inc.	13F	Company	0.34%	534,986	$2,685,630	—	31 Dec 2025	13F
Schonfeld Strategic Advisors LLC	13F	Company	0.34%	522,846	$2,624,686	—	31 Dec 2025	13F
MARSHALL WACE, LLP	13F	Company	0.33%	520,998	$2,615,410	—	31 Dec 2025	13F

Institutional Holders of Annexon, Inc. - Common Stock (ANNX) as of Q1 2026

As of 31 Mar 2026, Annexon, Inc. - Common Stock (ANNX) was held by 38 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 7,918,043 shares. The largest 10 holders included Nuveen, LLC, Y-Intercept (Hong Kong) Ltd, UBS Group AG, Bank of New York Mellon Corp, PROFUND ADVISORS LLC, J. Safra Sarasin Holding AG, China Universal Asset Management Co., Ltd., STRS OHIO, Allegheny Financial Group, and State of New Jersey Common Pension Fund D. This page lists 39 institutional shareholders reporting positions in this security for the Q1 2026 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders

167

Q1 2026 holders

Holder diff

-129

Investor	Q4 2025 Shares	Q1 2026 Shares	Share Diff	Share Chg %	Q4 2025 Value $	Q1 2026 Value $	Value Diff $	Value Chg %

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

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.