Position in ATYR
as of Mar 31, 2026
· filed May 12, 2026
Position Value
$37,830
-$109,490 QoQ
Shares Held
48,502
-74.2% QoQ
Ownership
0.049%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#33
of 109 holders
Holding Since
Sep 2021
12 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in ATYR Over Time
Shares Held
Position Value (USD)
Derivatives in ATYR
reported options exposure · as of Mar 31, 2026CallValue
$353,262
CallShares
452,900
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 Mar 31, 2026JANE STREET GROUP, LLC holds $1,247,243,084 across 314 Biotechnology names. ATYR ranks #278 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | BBIO |
BridgeBio Pharma, Inc.
|
1,757,672 | $130,524,721 | |
| 2 | RPRX |
Royalty Pharma plc
|
2,400,382 | $115,146,324 | |
| 3 | TGTX |
Tg Therapeutics, Inc.
|
2,041,669 | $67,824,242 | |
| 4 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
122,946 | $54,900,305 | |
| 5 | HALO |
Halozyme Therapeutics, Inc.
|
831,707 | $53,753,223 | |
| 6 | EXEL |
Exelixis, Inc.
|
1,087,030 | $46,622,715 | |
| 7 | JAZZ |
Jazz Pharmaceuticals plc
|
223,615 | $42,274,415 | |
| 8 | BNTX |
BioNTech SE
|
336,757 | $29,930,962 |
All Filings in ATYR
Export CSV
22 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $353,262 | 452,900 | Call | Defined | 2026-05-12 | |
| 2026-03-31 | $37,830 | 48,502 | Shares | Defined | 2026-05-12 | |
| 2025-12-31 | $35,000 | 44,700 | Put | Defined | 2026-02-12 | |
| 2025-12-31 | $227,461 | 290,500 | Call | Defined | 2026-02-12 | |
| 2025-12-31 | $147,320 | 188,149 | Shares | Defined | 2026-02-12 | |
| 2025-09-30 | $8,796 | 12,200 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $493,019 | 683,800 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $164,232 | 227,785 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $184,664 | 36,423 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $513,084 | 101,200 | Call | Defined | 2025-08-14 | |
| 2025-06-30 | $92,274 | 18,200 | Put | Defined | 2025-08-14 | |
| 2025-03-31 | $527,009 | 174,507 | Shares | Defined | 2025-05-19 | |
| 2025-03-31 | $243,110 | 80,500 | Put | Defined | 2025-05-19 | |
| 2024-12-31 | $720,401 | 199,006 | Shares | Defined | 2025-02-14 | |
| 2024-09-30 | $41,807 | 23,754 | Shares | Defined | 2024-11-15 | |
| 2024-06-30 | $44,391 | 28,456 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $121,172 | 62,140 | Shares | Defined | 2024-05-16 | |
| 2022-06-30 | $28,744 | 10,157 | Shares | Defined | 2022-08-16 | |
| 2021-12-31 | $102,339 | 13,700 | Put | Defined | 2022-02-15 | |
| 2021-09-30 | $1,554,496 | 171,200 | Call | Defined | 2021-11-16 | |
| 2021-09-30 | $1,243,060 | 136,901 | Shares | Defined | 2021-11-16 | |
| 2021-09-30 | $470,344 | 51,800 | Put | Defined | 2021-11-16 | |
| No filing history on record for this holder in this stock. | ||||||