Position in HALO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$12,347,626
+$12,347,626 QoQ
Shares Held
191,051
Ownership
0.161%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
25 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in HALO Over Time
Shares Held
Position Value (USD)
Derivatives in HALO
reported options exposure · as of Mar 31, 2026CallValue
$3,102,240
CallShares
48,000
PutValue
$2,766,164
PutShares
42,800
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 Mar 31, 2026CITADEL ADVISORS LLC holds $5,784,241,435 across 374 Biotechnology names. HALO ranks #85 (0.2% 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 HALO
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,102,240 | 48,000 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $2,766,164 | 42,800 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $12,347,626 | 191,051 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $1,325,810 | 19,700 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $1,090,260 | 16,200 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $17,953,704 | 244,801 | Shares | Defined | 2025-11-14 | |
| 2025-09-30 | $2,904,264 | 39,600 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $3,740,340 | 51,000 | Call | Defined | 2025-11-14 | |
| 2025-06-30 | $2,824,686 | 54,300 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $16,198,923 | 311,398 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $2,439,738 | 46,900 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $1,729,251 | 27,100 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $1,952,586 | 30,600 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $5,066,960 | 79,407 | Shares | Defined | 2025-05-15 | |
| 2024-12-31 | $60,372,411 | 1,262,757 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $1,811,999 | 37,900 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $5,335,596 | 111,600 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $2,501,388 | 43,700 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $2,266,704 | 39,600 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $18,205,518 | 347,699 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $1,000,076 | 19,100 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $591,668 | 11,300 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $736,308 | 18,100 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $720,036 | 17,700 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $12,259,568 | 301,366 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $702,240 | 19,000 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $554,400 | 15,000 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $6,828,876 | 184,764 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $282,680 | 7,400 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $7,048,281 | 184,510 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $1,379,020 | 36,100 | Call | Defined | 2023-11-14 | |
| 2023-06-30 | $41,546,110 | 1,151,819 | Shares | Defined | 2023-08-14 | |
| 2023-06-30 | $1,118,170 | 31,000 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $483,338 | 13,400 | Put | Defined | 2023-08-14 | |
| 2023-03-31 | $679,782 | 17,800 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $35,189,067 | 921,421 | Shares | Defined | 2023-05-15 | |
| 2023-03-31 | $954,750 | 25,000 | Call | Defined | 2023-05-15 | |
| 2022-12-31 | $1,280,250 | 22,500 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $2,384,110 | 41,900 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $14,354,390 | 252,274 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $818,478 | 20,700 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $1,292,958 | 32,700 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $788,743 | 19,948 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $699,600 | 15,900 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $2,798,400 | 63,600 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $23,863,224 | 542,346 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $393,535 | 9,868 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $2,193,400 | 55,000 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $733,792 | 18,400 | Put | Defined | 2022-05-16 | |
| 2021-12-31 | $5,933,789 | 147,570 | Shares | Defined | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||