Position in ATYR
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$1,041
-$19,494 QoQ
Shares Held
1,335
-94.9% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Dec 2022
10 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ATYR Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026SIMPLEX TRADING, LLC holds $82,538,439 across 183 Biotechnology names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | MRNA |
Moderna, Inc.
|
154,558 | $10,823,696 | |
| 2 | QURE |
uniQure N.V.
|
110,219 | $5,076,687 | |
| 3 | ERAS |
Erasca, Inc.
|
276,988 | $5,074,420 | |
| 4 | AXSM |
Axsome Therapeutics, Inc.
|
19,643 | $4,808,017 | |
| 5 | BBIO |
BridgeBio Pharma, Inc.
|
55,535 | $4,136,246 | |
| 6 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
11,567 | $3,482,014 | |
| 7 | ARWR |
Arrowhead Pharmaceuticals, Inc.
|
29,002 | $2,363,953 | |
| 8 | SLS |
SELLAS Life Sciences Group, Inc.
|
154,099 | $2,274,501 |
All Filings in ATYR
Export CSV
10 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $1,041 | 1,335 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $20,535 | 26,227 | Shares | Sole | 2026-02-11 | |
| 2025-06-30 | $46,659 | 9,203 | Shares | Sole | 2025-08-05 | |
| 2025-03-31 | $292,493 | 96,852 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $47,642 | 13,161 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $1 | 790 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $2 | 1,864 | Shares | Sole | 2024-07-25 | |
| 2024-03-31 | $11,740 | 6,021 | Shares | Sole | 2024-04-25 | |
| 2023-09-30 | $14,270 | 9,032 | Shares | Sole | 2023-11-01 | |
| 2022-12-31 | $26,748 | 12,214 | Shares | Sole | 2023-02-02 | |
| No filing history on record for this holder in this stock. | ||||||