ANNEXON INC (ANNX) is held by 125 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is BlackRock, Inc. as of Q1 2026.

Are institutions buying or selling ANNX?

In Q1 2026, 94 institutions opened or increased positions in ANNEXON INC while 35 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on ANNX?

The Smart Money Verdict combines four independent sources (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for ANNEXON INC.

How many hedge funds hold ANNX?

125 institutional investors report holding ANNEXON INC (ANNX) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into ANNX?

As of Q1 2026, tracked institutions in ANNEXON INC show 94 buyers versus 35 sellers — net inflows.

ANNEXON INC

ANNX·03589W102·US·Common Stock·Healthcare - Biotechnology-Activist

125

Holders

Avg rating(23 Elite)

$520.3M

Total Value

73% (132)

Fund Consensus

94 buying - 35 selling

Smart Money Verdict

View all

Held by 125 funds

23 elite

Who's Trading

ActivistRERedmile Group, LLC9.9%Jul 8, 2026

Activist

FMR LLC11.9%Jul 8, 2026

ActivistBLBVF PARTNERS L P/IL5.4%May 15, 2026

InsiderCHCarson William H.Buy $50KApr 10, 2026

Activist

The Vanguard Group0.0%Mar 26, 2026

InsiderCHCarson William H.Buy $45KMar 10, 2026

InsiderOMOverdorf MichaelSell $24KMar 2, 2026

InsiderARARTIS DEAN RICHARDSell $32KMar 2, 2026

InsiderLJLew JenniferSell $30KMar 2, 2026

InsiderYTYednock TedSell $30KMar 2, 2026

View all insider trades View all activist filings

13F: Mar 31, 2026Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
BlackRock, Inc.	Increased	10.9M(+22.1%)	$60.6M	0.0%	+12.28%	35
FMR LLC	Increased	10.6M(+4.0%)	$58.9M	0.0%	+22.46%	31
STATE STREET CORP	Increased	6.9M(+48.7%)	$38.3M	0.0%	+9.18%	40
VAVANGUARD CAPITAL MANAGEMENT LLC	New	6M	$33M	0.0%	+6.81%	40
AGADAGE CAPITAL PARTNERS GP, L.L.C.	Decreased	4.3M(-21.8%)	$23.8M	0.0%	+28.42%	0
BANK OF AMERICA CORP /DE/	Increased	4.3M(+165.3%)	$23.6M	0.0%	+29.84%	46
Nuveen, LLC	Increased	4.2M(+45.7%)	$23.5M	0.0%	+20.80%	39
BALYASNY ASSET MANAGEMENT L.P.	Increased	3.9M(+17.8%)	$21.5M	0.0%	+30.10%	33
AMERIPRISE FINANCIAL INC	Decreased	3.4M(-20.7%)	$19.1M	0.0%	+45.28%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	3.4M(+16.4%)	$18.7M	0.0%	-9.52%	33
Qube Research & Technologies Ltd	Increased	3.1M(+30.8%)	$17.3M	0.0%	+18.52%	36
MORGAN STANLEY	Decreased	2.7M(-4.2%)	$15.2M	0.0%	+65.70%	0
Woodline Partners LP	Decreased	2.3M(-41.6%)	$12.9M	0.0%	+42.52%	0
GOLDMAN SACHS GROUP INC	Increased	2.2M(+21.7%)	$11.9M	0.0%	+48.02%	33
Point72 Asset Management, L.P.	Increased	1.9M(+404.3%)	$10.4M	0.0%	+10.26%	45
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	1.5M	$8.2M	0.0%	+6.81%	38
UBS Group AG	Increased	1.2M(+230.4%)	$6.9M	0.0%	+9.71%	44
MILLENNIUM MANAGEMENT LLC	Decreased	1.2M(-56.3%)	$6.9M	0.0%	+117.69%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	1.1M(+4.3%)	$6.1M	0.0%	+1.46%	28
NORTHERN TRUST CORP	Increased	1.1M(+37.2%)	$6M	0.0%	-2.56%	36