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Equibles

CITADEL ADVISORS LLC

Position in IONS — Ionis Pharmaceuticals Inc

CIK 1423053 MIAMI, FL
Back to IONS Full portfolio

Position in IONS

as of Jun 30, 2026 · filed Sep 2, 2026
Position Value
$18,734,958
-$52,039,919 QoQ
Shares Held
236,284
-74.9% QoQ
Ownership
0.142%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#84
of 513 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in IONS Over Time

Shares Held

Position Value (USD)

Derivatives in IONS

reported options exposure · as of Jun 30, 2026
CallValue
$18,434,925
CallShares
232,500
PutValue
$30,645,585
PutShares
386,500

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 Jun 30, 2026

CITADEL ADVISORS LLC holds $6,150,739,871 across 435 Biotechnology names. IONS ranks #66 (0.3% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 ONC
BeOne Medicines Ltd.
 1,425,517 $406,229,578
2 BBIO
BridgeBio Pharma, Inc.
 3,760,028 $280,046,885
3 INSM
INSMED Inc
 2,556,973 $272,624,460
4 MDGL
Madrigal Pharmaceuticals, Inc.
 507,233 $272,358,759
5 VRTX
Vertex Pharmaceuticals Inc / Ma
 510,430 $253,545,893
6 JAZZ
Jazz Pharmaceuticals plc
 1,006,676 $242,578,715
7 MANE
Veradermics, Inc
 1,877,775 $230,853,658
8 ROIV
Roivant Sciences Ltd.
 5,576,261 $197,343,876

All Filings in IONS

Export CSV
50 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $18,434,925 232,500
2026-06-30 $18,734,958 236,284
2026-06-30 $30,645,585 386,500
2026-03-31 $70,774,877 942,534
2026-03-31 $18,644,847 248,300
2026-03-31 $8,657,877 115,300
2025-12-31 $168,871,053 2,134,636
2025-12-31 $5,458,590 69,000
2025-12-31 $8,654,634 109,400
2025-09-30 $7,183,116 109,800
2025-09-30 $157,143,091 2,402,065
2025-09-30 $4,978,462 76,100
2025-06-30 $3,559,851 90,100
2025-06-30 $2,259,972 57,200
2025-06-30 $59,066,698 1,494,981
2025-03-31 $2,353,260 78,000
2025-03-31 $1,746,843 57,900
2025-03-31 $104,993,469 3,480,062
2024-12-31 $2,101,096 60,100
2024-12-31 $75,720,422 2,165,916
2024-12-31 $1,307,504 37,400
2024-09-30 $1,586,376 39,600
2024-09-30 $2,279,414 56,900
2024-09-30 $16,070,108 401,151
2024-06-30 $6,920,232 145,200
2024-06-30 $2,630,832 55,200
2024-06-30 $29,884,392 627,033
2024-03-31 $3,382,600 78,030
2024-03-31 $1,647,300 38,000
2024-03-31 $5,973,630 137,800
2023-12-31 $2,347,376 46,400
2023-12-31 $12,775,391 252,528
2023-12-31 $1,001,682 19,800
2023-09-30 $1,555,848 34,300
2023-09-30 $24,309,239 535,918
2023-09-30 $362,880 8,000
2023-06-30 $2,092,530 51,000
2023-06-30 $29,614,551 721,778
2023-06-30 $718,025 17,500
2023-03-31 $260,902 7,300
2023-03-31 $5,415,432 151,523
2023-03-31 $1,383,138 38,700
2022-12-31 $876,264 23,200
2022-12-31 $1,333,281 35,300
2022-12-31 $14,939,772 395,546
2022-09-30 $18,498,400 418,232
2022-09-30 $2,224,769 50,300
2022-09-30 $928,830 21,000
2022-06-30 $17,774,893 480,143
2022-06-30 $732,996 19,800