Position in MESO
as of Jun 30, 2026
· filed Aug 12, 2026
Position Value
$94,317
+$66,721 QoQ
Shares Held
6,971
+306.9% QoQ
Ownership
0.005%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#42
of 72 holders
Holding Since
Mar 2020
17 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MESO Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026SIMPLEX TRADING, LLC holds $83,352,766 across 183 Biotechnology names. MESO ranks #83 (0.1% of the industry book) .
| # | 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 MESO
Export CSV
17 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $94,317 | 6,971 | Shares | Sole | 2026-08-12 | |
| 2025-09-30 | $27,596 | 1,713 | Shares | Sole | 2025-11-12 | |
| 2025-06-30 | $116,228 | 10,673 | Shares | Sole | 2025-08-05 | |
| 2025-03-31 | $200,503 | 16,066 | Shares | Sole | 2025-05-12 | |
| 2024-12-31 | $282,130 | 14,249 | Shares | Sole | 2025-02-11 | |
| 2024-09-30 | $157,713 | 19,304 | Shares | Sole | 2024-11-08 | |
| 2024-06-30 | $58,920 | 8,652 | Shares | Sole | 2024-07-25 | |
| 2023-09-30 | $94,184 | 76,573 | Shares | Sole | 2023-11-01 | |
| 2023-06-30 | $290,262 | 74,236 | Shares | Sole | 2023-08-04 | |
| 2023-03-31 | $200,505 | 60,944 | Shares | Sole | 2023-04-27 | |
| 2022-12-31 | $166,588 | 57,247 | Shares | Sole | 2023-02-02 | |
| 2022-09-30 | $138,605 | 54,355 | Shares | Sole | 2022-11-04 | |
| 2022-06-30 | $33,575 | 15,124 | Shares | Sole | 2022-08-03 | |
| 2021-12-31 | $85,857 | 17,887 | Shares | Sole | 2022-02-23 | |
| 2020-12-31 | $105,140 | 12,384 | Shares | Sole | 2021-02-02 | |
| 2020-06-30 | $5,695 | 500 | Shares | Sole | 2020-07-13 | |
| 2020-03-31 | $20,086 | 4,586 | Shares | Sole | 2020-04-29 | |
| No filing history on record for this holder in this stock. | ||||||