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CITADEL ADVISORS LLC

Position in SEPN — Septerna, Inc.

CIK 1423053 MIAMI, FL

Position in SEPN

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$212,661
-$1,904,685 QoQ
Shares Held
6,350
-91.6% QoQ
Ownership
0.014%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#109
of 154 holders
Holding Since
Dec 2024
6 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in SEPN Over Time

Shares Held

Position Value (USD)

Derivatives in SEPN

reported options exposure · as of Jun 30, 2026
CallValue
$2,739,482
CallShares
81,800
PutValue
$0
PutShares
0

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 $6,088,670,159 across 436 Biotechnology names. SEPN ranks #315 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in SEPN

Export CSV
12 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $2,739,482 81,800
2026-06-30 $212,661 6,350
2025-12-31 $331,772 11,900
2025-12-31 $2,117,346 75,945
2025-09-30 $282,150 15,000
2025-09-30 $188,100 10,000
2025-06-30 $187,871 17,774
2025-06-30 $125,783 11,900
2025-06-30 $1,063,342 100,600
2025-03-31 $42,846 7,400
2025-03-31 $66,585 11,500
2024-12-31 $9,271,797 404,882