ANNX

Annexon Inc
Health CareUSCUSIP 03589W102◍ Confluence graph
Tracked 13F Holders
198
-123 QoQ
13F Value (tracked)
$851.4M
Insider Net · 180d
$3.5M
2↑ 0↓
Recent Filings
15
Smart-money sentimentBullish
BearishBullish
13F funds (latest Q)35 adding · 26 trimming
Insider net (180d)+$3.5M

Who owns ANNX?

198 tracked 13F filers

198 tracked 13F filers disclose a position in ANNX as of the latest SEC 13F filings, a combined $851.4M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
#FundPosition valueSharesLast moveAs ofHistory
1Redmile Group, LLC
$80.6M
14.5M
+45%
Added · +4.5M sh
Q1 2026
2BlackRock, Inc.
$60.6M
10.9M
+22%
Added · +2.0M sh
Q1 2026
3FMR LLC
$58.9M
10.6M
+4.0%
Added · +413K sh
Q1 2026
4STATE STREET CORP
$56.1M
9.8M
+42%
Added · +2.9M sh
Q2 2026
5BVF INC/IL
$48.2M
8.7M
−4.7%
Reduced · −430K sh
Q1 2026
6VANGUARD CAPITAL MANAGEMENT LLC
$33.0M
6.0M
First observed position
No prior filed position
Q1 2026
7Siren, L.L.C.
$25.5M
4.5M
+13%
Added · +500K sh
Q2 2026
8Bain Capital Life Sciences Investors, LLC
$25.3M
4.4M
−15%
Reduced · −775K sh
Q2 2026
9ADAGE CAPITAL PARTNERS GP, L.L.C.
$23.8M
4.3M
−22%
Reduced · −1.2M sh
Q1 2026
10BANK OF AMERICA CORP /DE/
$23.6M
4.3M
+165%
Added · +2.7M sh
Q1 2026
11Nuveen, LLC
$23.5M
4.2M
+46%
Added · +1.3M sh
Q1 2026
12Bellevue Group AG
$23.4M
4.1M
−21%
Reduced · −1.1M sh
Q2 2026
13GEODE CAPITAL MANAGEMENT, LLC
$23.1M
4.0M
+20%
Added · +659K sh
Q2 2026
14BALYASNY ASSET MANAGEMENT L.P.
$21.5M
3.9M
+18%
Added · +588K sh
Q1 2026
15AMERIPRISE FINANCIAL INC
$19.1M
3.4M
−21%
Reduced · −900K sh
Q1 2026
16Qube Research & Technologies Ltd
$17.3M
3.1M
+31%
Added · +733K sh
Q1 2026
17Palo Alto Investors LP
$16.8M
2.9M
Held
Q2 2026
18MORGAN STANLEY
$15.2M
2.7M
−4.2%
Reduced · −120K sh
Q1 2026
19GREAT POINT PARTNERS LLC
$13.8M
2.5M
New
+2.5M sh
Q1 2026
20Woodline Partners LP
$12.9M
2.3M
−42%
Reduced · −1.7M sh
Q1 2026
21Opaleye Management Inc.
$12.9M
2.3M
−10%
Reduced · −268K sh
Q1 2026
22GOLDMAN SACHS GROUP INC
$11.9M
2.2M
+22%
Added · +384K sh
Q1 2026
23Point72 Asset Management, L.P.
$10.4M
1.9M
+404%
Added · +1.5M sh
Q1 2026
24VANGUARD PORTFOLIO MANAGEMENT LLC
$8.2M
1.5M
First observed position
No prior filed position
Q1 2026
25Tetragon Partners GP Ltd
$7.2M
1.3M
−36%
Reduced · −740K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is ANNX being bought or sold by institutions?

Last quarter, 9 funds opened a new position in ANNX and 26 added to an existing one, while 26 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
9
funds
Added
26
funds
Reduced
26
funds
Exited
0
funds

Funds that own ANNX also own

CompanyCo-held byCombined value
NVIDIA CORPNVDA100 funds$269.4B
AMAZON.COM INCAMZN100 funds$127.2B
ELI LILLY & COLLY99 funds$52.2B
MICROSOFT CORPMSFT96 funds$177.6B
META PLATFORMS INC-CLASS AMETA95 funds$74.6B
BROADCOM INCAVGO93 funds$105.2B
ALPHABET INC-CL AGOOGL93 funds$103.1B
MICRON TECHNOLOGY INCMU92 funds$28.4B
ORACLE CORPORCL92 funds$13.8B
UNITEDHEALTH GROUP INCUNH91 funds$19.0B
BOSTON SCIENTIFIC CORPBSX91 funds$10.7B
ADVANCED MICRO DEVICESAMD90 funds$25.1B

Ranked by how many of ANNX's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$3.5M
2 insiders
Sells · 180d
$0
0 insiders
Net
$3.5M
4 P/S txns
Signal
Net Buying
open-market
DateInsiderRoleActionSharesValue
May 28, 2026Satter Muneer ADirectorBuy (P)613K$3.3M
May 11, 2026Carson William H.DirectorBuy (P)8K$46K
Apr 10, 2026Carson William H.DirectorBuy (P)8K$50K
Mar 10, 2026Carson William H.DirectorBuy (P)8K$45K
Mar 2, 2026Lew JenniferEVP & CHIEF FINANCIAL OFFICERSell (S)6K$30K
Mar 2, 2026Dananberg JamieCHIEF MEDICAL OFFICERSell (S)6K$32K
Mar 2, 2026Overdorf MichaelEVP & CHIEF BUSINESS OFFICERSell (S)4K$24K
Mar 2, 2026Yednock TedEVP & CHIEF INNOVATION OFFICERSell (S)6K$30K
Mar 2, 2026ARTIS DEAN RICHARDEVP & CHIEF SCIENTIFIC OFFICERSell (S)6K$32K
Feb 18, 2026Lew JenniferEVP & CHIEF FINANCIAL OFFICERSell (S)8K$40K
Feb 18, 2026Dananberg JamieCHIEF MEDICAL OFFICERSell (S)5K$27K
Feb 18, 2026Overdorf MichaelEVP & CHIEF BUSINESS OFFICERSell (S)6K$32K

Institutional ownership over time

69 funds-30 since Q3 2024
096192Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $206.8M

Recent filings

15 shown

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Connected entities for ANNX

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Ask your agent what changed in ANNX

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/ANNX/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for ANNX.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for ANNX. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.