Position in ZLAB
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$31,763,167
+$1,989,565 QoQ
Shares Held
1,688,632
+0.0% QoQ
Ownership
0.115%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ZLAB Over Time
Shares Held
Position Value (USD)
Derivatives in ZLAB
reported options exposure · as of Mar 31, 2026CallValue
$0
CallShares
0
PutValue
$624,492
PutShares
33,200
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, 2026CITADEL ADVISORS LLC holds $5,780,974,653 across 374 Biotechnology names. ZLAB ranks #41 (0.5% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
|
2,182,571 | $356,894,009 | |
| 2 | ONC |
BeOne Medicines Ltd.
|
1,032,298 | $306,561,536 | |
| 3 | BMRN |
Biomarin Pharmaceutical Inc
|
4,512,634 | $254,918,694 | |
| 4 | JAZZ |
Jazz Pharmaceuticals plc
|
1,259,444 | $238,097,887 | |
| 5 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
453,843 | $237,573,195 | |
| 6 | BBIO |
BridgeBio Pharma, Inc.
|
3,173,940 | $235,696,783 | |
| 7 | TERN |
Terns Pharmaceuticals, Inc.
|
3,218,810 | $169,695,662 | |
| 8 | PTGX |
Protagonist Therapeutics, Inc
|
1,551,900 | $163,570,260 |
All Filings in ZLAB
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $31,763,167 | 1,688,632 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $624,492 | 33,200 | Put | Defined | 2026-05-15 | |
| 2025-12-31 | $29,773,602 | 1,687,846 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $269,892 | 15,300 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $818,496 | 46,400 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $33,450,886 | 987,043 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $1,077,702 | 31,800 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $809,971 | 23,900 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $965,172 | 27,600 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $12,806,468 | 366,213 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $940,693 | 26,900 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $1,438,372 | 39,800 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $730,028 | 20,200 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $13,822,428 | 382,469 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $348,327 | 13,300 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $1,801,872 | 68,800 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $4,715,561 | 180,052 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $32,260,019 | 1,336,372 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $1,745,322 | 72,300 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $417,622 | 17,300 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $1,452,254 | 83,800 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $15,591,211 | 899,666 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $138,640 | 8,000 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $10,582,394 | 660,574 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $487,008 | 30,400 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $291,564 | 18,200 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $295,164 | 10,800 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $836,024 | 30,590 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $614,925 | 22,500 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $233,376 | 9,600 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $3,408,383 | 140,205 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $442,442 | 18,200 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $5,638,367 | 203,331 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $379,901 | 13,700 | Put | Defined | 2023-08-14 | |
| 2023-06-30 | $219,067 | 7,900 | Call | Defined | 2023-08-14 | |
| 2023-03-31 | $655,222 | 19,700 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $286,036 | 8,600 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $1,597,078 | 48,018 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $4,101,520 | 133,600 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $625,788 | 20,384 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $248,670 | 8,100 | Put | Defined | 2023-02-14 | |
| 2022-09-30 | $307,800 | 9,000 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $3,536,280 | 103,400 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $867,000 | 25,000 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $2,741,211 | 79,043 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $291,312 | 8,400 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $721,272 | 16,400 | Put | Defined | 2022-05-16 | |
| 2022-03-31 | $945,570 | 21,500 | Call | Defined | 2022-05-16 | |
| 2021-12-31 | $3,109,754 | 49,479 | Shares | Defined | 2022-02-14 | |
| 2021-12-31 | $1,615,245 | 25,700 | Call | Defined | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||