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Equibles

CITADEL ADVISORS LLC

Position in SION — Sionna Therapeutics, Inc.

CIK 1423053 MIAMI, FL
Back to SION Full portfolio

Position in SION

as of Jun 30, 2026 · filed Sep 2, 2026
Position Value
$50,484,507
+$3,702,244 QoQ
Shares Held
1,147,636
-1.7% QoQ
Ownership
2.54%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
#11
of 146 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SION Over Time

Shares Held

Position Value (USD)

Derivatives in SION

reported options exposure · as of Jun 30, 2026
CallValue
$0
CallShares
0
PutValue
$369,516
PutShares
8,400

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 $6,150,763,744 across 435 Biotechnology names. SION ranks #30 (0.8% 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 SION

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $369,516 8,400
2026-06-30 $50,484,507 1,147,636
2026-03-31 $46,782,263 1,166,931
2025-12-31 $44,732,550 1,087,325
2025-09-30 $1,056,495 35,923
2025-06-30 $2,253,973 129,912
2025-03-31 $3,415,190 326,500