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CITADEL ADVISORS LLC

Position in ZBIO — Zenas BioPharma, Inc.

CIK 1423053 MIAMI, FL

Position in ZBIO

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$1,307,308
+$419,202 QoQ
Shares Held
66,870
+173.4% QoQ
Ownership
0.106%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Sep 2024
5 quarters on record
Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Common Shares in ZBIO Over Time

Shares Held

Position Value (USD)

Derivatives in ZBIO

reported options exposure · as of Mar 31, 2026
CallValue
$520,030
CallShares
26,600
PutValue
$668,610
PutShares
34,200

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. ZBIO ranks #222 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ZBIO

Export CSV
9 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $668,610 34,200
2026-03-31 $1,307,308 66,870
2026-03-31 $520,030 26,600
2025-12-31 $888,106 24,459
2025-12-31 $370,362 10,200
2025-12-31 $802,451 22,100
2025-06-30 $2,846,776 293,785
2024-12-31 $676,690 82,624
2024-09-30 $1,595,928 94,322