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CITADEL ADVISORS LLC

Position in MBX — MBX Biosciences, Inc.

CIK 1423053 MIAMI, FL

Position in MBX

as of Jun 30, 2026 · filed Sep 2, 2026
Position Value
$0
-$27,845,064 QoQ
Shares Held
0
-100.0% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2024
7 quarters on record

Common Shares in MBX Over Time

Shares Held

Position Value (USD)

Derivatives in MBX

reported options exposure · as of Jun 30, 2026
CallValue
$1,236,480
CallShares
22,400
PutValue
$209,760
PutShares
3,800

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.

# Ticker Company Shares Value (USD) Open

All Filings in MBX

Export CSV
14 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,236,480 22,400
2026-06-30 $209,760 3,800
2026-03-31 $27,845,064 932,833
2026-03-31 $295,515 9,900
2026-03-31 $755,205 25,300
2025-12-31 $271,244 8,600
2025-12-31 $25,542,889 809,857
2025-12-31 $533,026 16,900
2025-09-30 $2,003,750 114,500
2025-09-30 $17,431,452 996,083
2025-09-30 $325,500 18,600
2025-06-30 $236,187 20,700
2024-12-31 $4,060,681 220,330
2024-09-30 $3,523,095 135,608