Position in SRRK
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$44,283,278
+$22,436,858 QoQ
Shares Held
900,799
+81.6% QoQ
Ownership
0.752%
of shares outstanding
% of Portfolio
0.03%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2020
23 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in SRRK Over Time
Shares Held
Position Value (USD)
Derivatives in SRRK
reported options exposure · as of Mar 31, 2026CallValue
$3,038,088
CallShares
61,800
PutValue
$1,174,924
PutShares
23,900
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 $5,783,571,443 across 373 Biotechnology names. SRRK ranks #32 (0.8% 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 SRRK
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $3,038,088 | 61,800 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $44,283,278 | 900,799 | Shares | Defined | 2026-05-15 | |
| 2026-03-31 | $1,174,924 | 23,900 | Put | Defined | 2026-05-15 | |
| 2025-12-31 | $1,880,935 | 42,700 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $1,554,965 | 35,300 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $21,846,420 | 495,946 | Shares | Defined | 2026-02-17 | |
| 2025-09-30 | $5,485,452 | 147,300 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $5,496,624 | 147,600 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $5,012,875 | 134,610 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $1,746,206 | 49,300 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $1,416,800 | 40,000 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $34,592,057 | 976,625 | Shares | Defined | 2025-08-14 | |
| 2025-03-31 | $31,106,700 | 967,549 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $900,200 | 28,000 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $1,195,980 | 37,200 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $4,291,746 | 99,300 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $2,774,724 | 64,200 | Put | Defined | 2025-02-14 | |
| 2024-12-31 | $74,254,509 | 1,718,059 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $6,275,626 | 783,474 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $243,504 | 30,400 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $252,315 | 31,500 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $941,255 | 112,996 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $114,954 | 13,800 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $63,308 | 7,600 | Call | Defined | 2024-08-14 | |
| 2024-03-31 | $97,680 | 5,500 | Call | Defined | 2024-05-15 | |
| 2024-03-31 | $179,376 | 10,100 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $11,451,452 | 644,789 | Shares | Defined | 2024-05-15 | |
| 2023-12-31 | $406,080 | 21,600 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $10,130,379 | 538,850 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $56,400 | 3,000 | Put | Defined | 2024-02-14 | |
| 2023-09-30 | $50,410 | 7,100 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $20,590 | 2,900 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $324,612 | 45,720 | Shares | Defined | 2023-11-14 | |
| 2023-03-31 | $42,400 | 5,300 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $20,000 | 2,500 | Put | Defined | 2023-05-15 | |
| 2023-03-31 | $865,072 | 108,134 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $12,670 | 1,400 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $1,051,274 | 116,163 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $2,715 | 300 | Call | Defined | 2023-02-14 | |
| 2022-09-30 | $2,100,662 | 303,126 | Shares | Defined | 2022-11-14 | |
| 2022-06-30 | $1,207,069 | 219,867 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $353,007 | 64,300 | Call | Defined | 2022-08-15 | |
| 2022-03-31 | $2,883,659 | 223,713 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $1,078,893 | 83,700 | Call | Defined | 2022-05-16 | |
| 2021-09-30 | $2,693,440 | 81,570 | Shares | Defined | 2021-11-15 | |
| 2021-06-30 | $4,351,790 | 150,581 | Shares | Defined | 2021-08-16 | |
| 2021-03-31 | $212,772 | 4,200 | Call | Defined | 2021-05-21 | |
| 2021-03-31 | $2,476,007 | 48,875 | Shares | Defined | 2021-05-21 | |
| 2021-03-31 | $212,772 | 4,200 | Put | Defined | 2021-05-21 | |
| 2020-12-31 | $6,671,224 | 137,466 | Shares | Defined | 2021-02-16 | |
| No filing history on record for this holder in this stock. | ||||||