Who Owns MEREO BIOPHARMA GROUP PLC (MREO)? -- Institutional Holders (2026-06-30)
78 institutions reported holding $18.3M of MEREO BIOPHARMA GROUP PLC (MREO) in SEC 13F filings for 2026-06-30. Largest institutional holders: Rubric Capital Management LP ($4.9M), 683 Capital Management, LLC ($3.7M), BANK OF AMERICA CORP /DE/ ($2.6M), Defilade Capital Management, L.P. ($2.4M), Newtyn Management, LLC ($953,100). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Rubric Capital Management LP | $4.9M | 15.3M | Hold |
| 2 | 683 Capital Management, LLC | $3.7M | 11.8M | Trimmed |
| 3 | BANK OF AMERICA CORP /DE/ | $2.6M | 8.2M | Trimmed |
| 4 | Defilade Capital Management, L.P. | $2.4M | 7.6M | Hold |
| 5 | Newtyn Management, LLC | $953,100 | 3.0M | Trimmed |
| 6 | Tejara Capital Ltd | $647,320 | 2.0M | Hold |
| 7 | UBS Group AG | $460,346 | 1.4M | Trimmed |
| 8 | TWO SIGMA INVESTMENTS, LP | $419,123 | 1.3M | Added |
| 9 | CITADEL ADVISORS LLC | $317,719 | 1.0M | Added |
| 10 | EcoR1 Capital, LLC | $317,700 | 1.0M | Trimmed |
| 11 | JANE STREET GROUP, LLC | $249,949 | 786,744 | Added |
| 12 | Ishara Investments LP | $244,232 | 768,750 | New |
| 13 | Wealthspire Advisors, LLC | $243,041 | 765,000 | Trimmed |
| 14 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $137,996 | 432,770 | Trimmed |
| 15 | Rangeley Capital, LLC | $104,587 | 329,200 | Hold |
| 16 | GROUP ONE TRADING LLC | $73,680 | 231,915 | Trimmed |
| 17 | MARSHALL WACE, LLP | $57,563 | 179,884 | Trimmed |
| 18 | XTX Topco Ltd | $55,433 | 174,481 | Added |
| 19 | SIMPLEX TRADING, LLC | $52,494 | 165,080 | Trimmed |
| 20 | STATE STREET CORP | $42,817 | 134,772 | Added |
| 21 | NOMURA HOLDINGS INC | $33,155 | 104,361 | New |
| 22 | James J. Burns & Company, LLC | $30,309 | 95,400 | New |
| 23 | Quarry LP | $29,784 | 93,750 | New |
| 24 | GOLDMAN SACHS GROUP INC | $27,062 | 85,180 | New |
| 25 | JMN Financial LLC | $24,383 | 76,748 | New |
Source: SEC Form 13F filings · as of 2026-06-30