Position in MREO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$141,242
+$141,242 QoQ
Shares Held
444,158
Ownership
0.278%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#13
of 58 holders
Holding Since
Sep 2020
24 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MREO Over Time
Shares Held
Position Value (USD)
Derivatives in MREO
reported options exposure · as of Jun 30, 2026CallValue
$160,558
CallShares
504,900
PutValue
$16,218
PutShares
51,000
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 Jun 30, 2026CITADEL ADVISORS LLC holds $6,088,670,159 across 436 Biotechnology names. MREO ranks #337 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ONC |
BeOne Medicines Ltd.
|
1,425,517 | $406,229,578 | |
| 2 | BBIO |
BridgeBio Pharma, Inc.
|
3,760,028 | $280,046,885 | |
| 3 | INSM |
INSMED Inc
|
2,556,973 | $272,624,460 | |
| 4 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
507,233 | $272,358,759 | |
| 5 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
510,430 | $253,545,893 | |
| 6 | JAZZ |
Jazz Pharmaceuticals plc
|
1,006,676 | $242,578,715 | |
| 7 | MANE |
Veradermics, Inc
|
1,877,775 | $230,853,658 | |
| 8 | ROIV |
Roivant Sciences Ltd.
|
5,576,261 | $197,343,876 |
All Filings in MREO
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $16,218 | 51,000 | Put | Defined | 2026-08-14 | |
| 2026-06-30 | $160,558 | 504,900 | Call | Defined | 2026-08-14 | |
| 2026-06-30 | $141,242 | 444,158 | Shares | Defined | 2026-08-14 | |
| 2026-03-31 | $127,710 | 387,000 | Call | Defined | 2026-05-15 | |
| 2026-03-31 | $22,374 | 67,800 | Put | Defined | 2026-05-15 | |
| 2025-12-31 | $54,835 | 131,500 | Call | Defined | 2026-02-17 | |
| 2025-12-31 | $257,372 | 617,200 | Put | Defined | 2026-02-17 | |
| 2025-09-30 | $52,942 | 25,700 | Call | Defined | 2025-11-14 | |
| 2025-09-30 | $113,918 | 55,300 | Put | Defined | 2025-11-14 | |
| 2025-09-30 | $6,533,561 | 3,171,632 | Shares | Defined | 2025-11-14 | |
| 2025-06-30 | $2,061,385 | 760,659 | Shares | Defined | 2025-08-14 | |
| 2025-06-30 | $270,458 | 99,800 | Put | Defined | 2025-08-14 | |
| 2025-06-30 | $168,562 | 62,200 | Call | Defined | 2025-08-14 | |
| 2025-03-31 | $773,219 | 343,653 | Shares | Defined | 2025-05-15 | |
| 2025-03-31 | $78,075 | 34,700 | Put | Defined | 2025-05-15 | |
| 2025-03-31 | $172,125 | 76,500 | Call | Defined | 2025-05-15 | |
| 2024-12-31 | $293,650 | 83,900 | Call | Defined | 2025-02-14 | |
| 2024-12-31 | $1,098,825 | 313,950 | Shares | Defined | 2025-02-14 | |
| 2024-12-31 | $340,550 | 97,300 | Put | Defined | 2025-02-14 | |
| 2024-09-30 | $535,359 | 130,258 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $466,896 | 113,600 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $68,637 | 16,700 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $361,080 | 100,300 | Put | Defined | 2024-08-14 | |
| 2024-06-30 | $100,440 | 27,900 | Call | Defined | 2024-08-14 | |
| 2024-06-30 | $1,472,359 | 408,989 | Shares | Defined | 2024-08-14 | |
| 2024-03-31 | $239,250 | 72,500 | Put | Defined | 2024-05-15 | |
| 2024-03-31 | $144,892 | 43,907 | Shares | Defined | 2024-05-15 | |
| 2024-03-31 | $108,900 | 33,000 | Call | Defined | 2024-05-15 | |
| 2023-12-31 | $35,574 | 15,400 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $750,331 | 324,819 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $22,407 | 9,700 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $6,450 | 5,000 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $2,892,727 | 2,242,425 | Shares | Defined | 2023-11-14 | |
| 2023-06-30 | $528 | 400 | Call | Defined | 2023-08-14 | |
| 2023-06-30 | $2,334,344 | 1,768,443 | Shares | Defined | 2023-08-14 | |
| 2023-03-31 | $707 | 1,000 | Call | Defined | 2023-05-15 | |
| 2023-03-31 | $2,154,907 | 3,047,960 | Shares | Defined | 2023-05-15 | |
| 2022-12-31 | $69,675 | 92,900 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $66,300 | 88,400 | Put | Defined | 2023-02-14 | |
| 2022-12-31 | $2,296,748 | 3,062,332 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $91,782 | 106,600 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $2,648,337 | 3,075,887 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $85,755 | 99,600 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $166,208 | 148,400 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $107,408 | 95,900 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $3,095,035 | 2,763,425 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $17,696 | 15,800 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $4,375,095 | 3,906,335 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $21,120 | 13,200 | Put | Defined | 2022-02-14 | |
| 2021-12-31 | $24,800 | 15,500 | Call | Defined | 2022-02-14 | |
| No filing history on record for this holder in this stock. | ||||||