Position in MESO
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$1,322,049
-$1,048,189 QoQ
Shares Held
85,959
-34.6% QoQ
Ownership
0.066%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2024
9 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MESO Over Time
Shares Held
Position Value (USD)
Derivatives in MESO
reported options exposure · as of Mar 31, 2026CallValue
$6,433,454
CallShares
418,300
PutValue
$632,118
PutShares
41,100
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. MESO ranks #220 (0.0% 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 MESO
Export CSV
24 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $632,118 | 41,100 | Put | Defined | 2026-05-15 | |
| 2026-03-31 | $6,433,454 | 418,300 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $1,322,049 | 85,959 | Shares | Defined | 2026-05-15 | |
| 2025-12-31 | $2,370,238 | 131,388 | Shares | Defined | 2026-02-17 | |
| 2025-12-31 | $561,044 | 31,100 | Put | Defined | 2026-02-17 | |
| 2025-12-31 | $8,444,524 | 468,100 | Call | Defined | 2026-02-17 | |
| 2025-09-30 | $3,702,078 | 229,800 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $1,064,871 | 66,100 | Put | Defined | 2025-11-14 | |
| 2025-06-30 | $812,786 | 74,636 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $690,426 | 63,400 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $1,539,301 | 141,350 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $1,883,856 | 150,950 | Call | Defined | 2025-05-15 | |
| 2025-03-31 | $6,075,176 | 486,793 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $1,032,096 | 82,700 | Put | Defined | 2025-05-15 | |
| 2024-12-31 | $5,719,230 | 288,850 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $2,309,670 | 116,650 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $1,238,572 | 151,600 | Call | Defined | 2024-11-14 | |
| 2024-09-30 | $326,538 | 39,968 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $424,023 | 51,900 | Put | Defined | 2024-11-14 | |
| 2024-06-30 | $682,702 | 100,250 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $526,372 | 77,294 | Shares | Defined | 2024-08-14 | |
| 2024-06-30 | $364,335 | 53,500 | Put | Defined | 2024-08-14 | |
| 2024-03-31 | $121,743 | 24,300 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $277,053 | 55,300 | Call | Defined | 2024-05-15 | |
| No filing history on record for this holder in this stock. | ||||||