Skip to main content
Equibles

CITADEL ADVISORS LLC

Position in ANNX — Annexon, Inc.

CIK 1423053 MIAMI, FL
Back to ANNX Full portfolio

Position in ANNX

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$3,324,747
+$1,942,772 QoQ
Shares Held
600,135
+118.0% QoQ
Ownership
0.301%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Sep 2020
23 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ANNX Over Time

Shares Held

Position Value (USD)

Derivatives in ANNX

reported options exposure · as of Mar 31, 2026
CallValue
$1,349,544
CallShares
243,600
PutValue
$241,544
PutShares
43,600

Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.

Position in Biotechnology

Healthcare · as of Mar 31, 2026

CITADEL ADVISORS LLC holds $5,784,241,435 across 374 Biotechnology names. ANNX ranks #161 (0.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 INSM
INSMED Inc
 2,182,571 $356,894,009
2 ONC
BeOne Medicines Ltd.
 1,032,298 $306,561,536
3 BMRN
Biomarin Pharmaceutical Inc
 4,512,634 $254,918,694
4 JAZZ
Jazz Pharmaceuticals plc
 1,259,444 $238,097,887
5 MDGL
Madrigal Pharmaceuticals, Inc.
 453,843 $237,573,195
6 BBIO
BridgeBio Pharma, Inc.
 3,173,940 $235,696,783
7 TERN
Terns Pharmaceuticals, Inc.
 3,218,810 $169,695,662
8 PTGX
Protagonist Therapeutics, Inc
 1,551,900 $163,570,260

All Filings in ANNX

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $1,349,544 243,600
2026-03-31 $3,324,747 600,135
2026-03-31 $241,544 43,600
2025-12-31 $1,381,975 275,294
2025-12-31 $176,704 35,200
2025-12-31 $353,408 70,400
2025-09-30 $510,875 167,500
2025-09-30 $186,660 61,200
2025-09-30 $50,020 16,400
2025-06-30 $86,400 36,000
2025-06-30 $31,840 13,267
2025-03-31 $24,038 12,455
2025-03-31 $28,371 14,700
2025-03-31 $100,553 52,100
2024-12-31 $454,005 88,500
2024-12-31 $128,752 25,098
2024-12-31 $79,002 15,400
2024-09-30 $33,376 5,638
2024-09-30 $243,904 41,200
2024-09-30 $269,360 45,500
2024-06-30 $583,590 119,100
2024-06-30 $1,194,130 243,700
2024-03-31 $1,854,699 258,675
2024-03-31 $400,086 55,800
2024-03-31 $1,218,183 169,900
2023-12-31 $51,756 11,400
2023-12-31 $19,976 4,400
2023-12-31 $4,801,898 1,057,687
2023-09-30 $1,616,509 684,962
2023-09-30 $43,896 18,600
2023-09-30 $1,180 500
2023-06-30 $178,816 50,800
2023-06-30 $2,578,891 732,640
2023-06-30 $38,720 11,000
2023-03-31 $57,750 15,000
2023-03-31 $9,290,500 2,413,117
2023-03-31 $622,930 161,800
2022-12-31 $210,936 40,800
2022-12-31 $9,651,268 1,866,783
2022-12-31 $841,676 162,800
2022-09-30 $493,164 79,800
2022-09-30 $8,689,728 1,406,105
2022-09-30 $289,224 46,800
2022-06-30 $191,139 50,700
2022-06-30 $180,960 48,000
2022-06-30 $5,593,408 1,483,663
2022-03-31 $4,752,847 1,740,970
2021-12-31 $16,977,876 1,477,622
2021-09-30 $34,663,413 1,862,623
2021-06-30 $44,916,521 1,995,403

Report a Problem

Category
Description
Email (optional, for follow-up)