SUSQUEHANNA INTERNATIONAL GROUP, LLP
Position in MREO — Mereo BioPharma Group plc
CIK 1446194
BALA CYNWYD, PA
Position in MREO
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$67,819
+$3,167 QoQ
Shares Held
213,270
+8.9% QoQ
Ownership
0.134%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#15
of 58 holders
Holding Since
Mar 2021
22 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
$55,173
CallShares
173,500
PutValue
$14,628
PutShares
46,000
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, 2026SUSQUEHANNA INTERNATIONAL GROUP, LLP holds $1,649,997,309 across 349 Biotechnology names. MREO ranks #279 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ABVX |
Abivax S.A.
|
1,053,896 | $140,442,180 | |
| 2 | CYTK |
Cytokinetics Inc
|
1,549,458 | $131,998,327 | |
| 3 | REGN |
Regeneron Pharmaceuticals, Inc.
|
180,219 | $112,373,755 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
294,460 | $88,641,293 | |
| 5 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
148,610 | $79,796,139 | |
| 6 | INSM |
INSMED Inc
|
729,354 | $77,763,723 | |
| 7 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
144,174 | $71,615,550 | |
| 8 | AGIO |
Agios Pharmaceuticals, Inc.
|
1,375,558 | $51,046,957 |
All Filings in MREO
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $67,819 | 213,270 | Shares | Other | 2026-08-14 | |
| 2026-06-30 | $55,173 | 173,500 | Call | Other | 2026-08-14 | |
| 2026-06-30 | $14,628 | 46,000 | Put | Other | 2026-08-14 | |
| 2026-03-31 | $64,652 | 195,920 | Shares | Other | 2026-05-15 | |
| 2026-03-31 | $14,652 | 44,400 | Put | Other | 2026-05-15 | |
| 2026-03-31 | $67,188 | 203,600 | Call | Other | 2026-05-15 | |
| 2025-12-31 | $15,137 | 36,300 | Put | Other | 2026-02-17 | |
| 2025-12-31 | $274,302 | 657,800 | Call | Other | 2026-02-17 | |
| 2025-09-30 | $1,016,358 | 493,378 | Shares | Other | 2025-11-14 | |
| 2025-09-30 | $309,618 | 150,300 | Call | Other | 2025-11-14 | |
| 2025-09-30 | $54,590 | 26,500 | Put | Other | 2025-11-14 | |
| 2025-06-30 | $979,778 | 361,542 | Shares | Other | 2025-08-14 | |
| 2025-06-30 | $362,056 | 133,600 | Call | Other | 2025-08-14 | |
| 2025-06-30 | $302,436 | 111,600 | Put | Other | 2025-08-14 | |
| 2025-03-31 | $209,250 | 93,000 | Call | Other | 2025-05-14 | |
| 2025-03-31 | $197,550 | 87,800 | Put | Other | 2025-05-14 | |
| 2025-03-31 | $392,350 | 174,378 | Shares | Other | 2025-05-14 | |
| 2024-12-31 | $1,370,565 | 391,590 | Shares | Other | 2025-02-14 | |
| 2024-12-31 | $356,650 | 101,900 | Put | Other | 2025-02-14 | |
| 2024-12-31 | $197,050 | 56,300 | Call | Other | 2025-02-14 | |
| 2024-09-30 | $645,681 | 157,100 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $1,588,227 | 386,430 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $789,120 | 192,000 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $3,024,950 | 840,264 | Shares | Defined | 2024-08-15 | |
| 2024-06-30 | $387,000 | 107,500 | Put | Defined | 2024-08-15 | |
| 2024-06-30 | $334,800 | 93,000 | Call | Defined | 2024-08-15 | |
| 2024-03-31 | $393,030 | 119,100 | Call | Defined | 2024-05-07 | |
| 2024-03-31 | $5,344,769 | 1,619,627 | Shares | Defined | 2024-05-07 | |
| 2024-03-31 | $543,840 | 164,800 | Put | Defined | 2024-05-07 | |
| 2023-12-31 | $107,415 | 46,500 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $47,817 | 20,700 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $405,700 | 175,628 | Shares | Defined | 2024-02-14 | |
| 2023-09-30 | $131,322 | 101,800 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $133,218 | 103,270 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $17,802 | 13,800 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $26,796 | 20,300 | Put | Defined | 2023-08-11 | |
| 2023-06-30 | $371,712 | 281,600 | Call | Defined | 2023-08-11 | |
| 2023-03-31 | $23,472 | 33,200 | Call | Defined | 2023-05-16 | |
| 2023-03-31 | $30,463 | 43,089 | Shares | Defined | 2023-05-16 | |
| 2022-12-31 | $9,825 | 13,100 | Shares | Defined | 2023-02-14 | |
| 2022-09-30 | $95,398 | 110,800 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $44,707 | 51,925 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $20,577 | 23,900 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $92,624 | 82,700 | Put | Defined | 2022-08-15 | |
| 2022-06-30 | $53,088 | 47,400 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $75,128 | 67,079 | Shares | Defined | 2022-08-15 | |
| 2022-03-31 | $51,744 | 46,200 | Call | Defined | 2022-05-16 | |
| 2021-12-31 | $99,099 | 61,937 | Shares | Defined | 2022-04-05 | |
| 2021-12-31 | $47,520 | 29,700 | Put | Defined | 2022-04-05 | |
| 2021-09-30 | $93,368 | 38,582 | Shares | Defined | 2021-11-15 | |
| No filing history on record for this holder in this stock. | ||||||