Mereo BioPharma Group plc
MREO- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001719714
No open-market purchases or sales by Mereo BioPharma Group plc insiders were filed in the last 90 days; 60 institutions reported holding it in 13F filings for Q2 2026, worth $18.0M in total; no superinvestor holds it.
13F holders, Q3 2025
Institutional positions in Mereo BioPharma Group plc as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 84
- −2 vs. Q2 2025
- Shares held
- 100.2M
- +1.49M (+1.5%) vs. Q2 2025
- Total value
- $206.7M
- −$61.1M (−22.8%) vs. Q2 2025
- New holders
- 14
- 23 more added
- Sold out
- 16
- 23 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MREO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 60 | $18.0M |
| Q1 2026 | 63 | $24.9M |
| Q4 2025 | 70 | $25.8M |
| Q3 2025 | 84 | $206.7M |
| Q2 2025 | 86 | $267.8M |
| Q1 2025 | 90 | $250.3M |
| Q4 2024 | 91 | $403.1M |
| Q3 2024 | 77 | $434.8M |
| Q2 2024 | 79 | $361.9M |
| Q1 2024 | 80 | $277.3M |
| Q4 2023 | 64 | $181.4M |
| Q3 2023 | 56 | $90.4M |
| Q2 2023 | 53 | $84.3M |
| Q1 2023 | 58 | $43.0M |
| Q4 2022 | 61 | $46.2M |
| Q3 2022 | 63 | $58.5M |
| Q2 2022 | 64 | $82.7M |
| Q1 2022 | 60 | $99.9M |
| Q4 2021 | 73 | $145.7M |
| Q3 2021 | 63 | $212.2M |
| Q2 2021 | 72 | $284.4M |
| Q1 2021 | 67 | $304.5M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Mereo BioPharma Group plc; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Royal Bank of Canada | 5 | $0 | 0.00% | +5 | New |
| BNP Paribas Arbitrage, SA | 3 | $6 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 13 | $27 | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 75 | $155 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 230 | $473 | 0.00% | 00.0% | Unchanged |
| New England Capital Financial Advisors LLC | 300 | $618 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 309 | $637 | 0.00% | 00.0% | Unchanged |
| EverSource Wealth Advisors, LLC | 417 | $859 | 0.00% | −53−11.3% | Reduced |
| Sit Investment Associates Inc | 970 | $2.00K | 0.00% | 00.0% | Unchanged |
| Wealthspire Advisors, LLC | 1,026 | $2.11K | 0.00% | +1,026 | New |
| GPS Wealth Strategies Group, LLC | 1,500 | $3.09K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 1,573 | $3.24K | 0.00% | −64−3.9% | Reduced |
| Rockefeller Capital Management L.P. | 2,000 | $4.12K | 0.00% | +2,000 | New |
| SRS Capital Advisors, Inc. | 4,000 | $8.24K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 5,677 | $9.71K | 0.00% | +300+5.6% | Added |
| Caitong International Asset Management Co., Ltd | 8,476 | $17.5K | 0.01% | +3,932+86.5% | Added |
| Rhumbline Advisers | 9,122 | $18.8K | 0.00% | −756−7.7% | Reduced |
| GAMMA Investing LLC | 9,181 | $18.9K | 0.00% | −76−0.8% | Reduced |
| Level Four Advisory Services, LLC | 10,000 | $20.6K | 0.00% | 00.0% | Unchanged |
| Scientech Research LLC | 10,124 | $20.9K | 0.01% | +10,124 | New |
| Newbridge Financial Services Group, Inc. | 13,000 | $26.8K | 0.00% | 00.0% | Unchanged |
| State of New Jersey Common Pension Fund D | 15,644 | $32.2K | 0.00% | +15,644 | New |
| Virtu Financial LLC | 15,970 | $33.0K | 0.00% | +15,970 | New |
| Sheets Smith Investment Management | 16,890 | $34.8K | 0.02% | 00.0% | Unchanged |
| PFG Investments, LLC | 17,150 | $35.3K | 0.00% | −20,283−54.2% | Reduced |
| Resources Investment Advisors, LLC. | 18,300 | $37.7K | 0.00% | 00.0% | Unchanged |
| Golden State Equity Partners | 19,900 | $41.0K | 0.01% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 21,271 | $43.8K | 0.00% | +21,271 | New |
| Centiva Capital, LP | 25,000 | $51.5K | 0.00% | 00.0% | Unchanged |
| Squarepoint Ops LLC | 30,055 | $61.9K | 0.00% | +9,387+45.4% | Added |
| Forefront Analytics, LLC | 33,180 | $68.4K | 0.07% | +14,042+73.4% | Added |
| Forefront Wealth Partners, LLC | 33,180 | $68.4K | 0.02% | +33,180 | New |
| HRT Financial LP | 34,852 | $71.0K | 0.00% | +34,852 | New |
| Blue Rock Wealth Management LLC | 37,000 | $76.2K | 0.05% | 00.0% | Unchanged |
| Avanza Fonder AB | 38,235 | $78.8K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 40,930 | $84.3K | 0.02% | +7,105+21.0% | Added |
| Significant Wealth Partners LLC | 47,814 | $98.5K | 0.05% | +25,553+114.8% | Added |
| Aquatic Capital Management LLC | 53,712 | $110.6K | 0.00% | +26,782+99.5% | Added |
| Gsa Capital Partners LLP | 58,145 | $120.0K | 0.01% | +58,145 | New |
| Clear Harbor Asset Management, LLC | 77,000 | $158.6K | 0.01% | +35,000+83.3% | Added |
| Geode Capital Management, LLC | 92,534 | $190.6K | 0.00% | 00.0% | Unchanged |
| Nomura Holdings Inc | 103,800 | $213.8K | 0.00% | −21,200−17.0% | Reduced |
| Cantor Fitzgerald, L. P. | 110,000 | $226.6K | 0.00% | −232,957−67.9% | Reduced |
| State Street Corp | 132,701 | $273.4K | 0.00% | +87,759+195.3% | Added |
| Group One Trading, L.P. | 136,588 | $281.4K | 0.01% | −2,971−2.1% | Reduced |
| Caption Management, LLC | 189,914 | $391.2K | 0.02% | −7,685−3.9% | Reduced |
| XTX Topco Ltd | 191,037 | $393.5K | 0.02% | +121,696+175.5% | Added |
| Simplex Trading, LLC | 196,269 | $404.0K | 0.01% | −4,872−2.4% | Reduced |
| Two Sigma Advisers, LP | 242,200 | $498.9K | 0.00% | +97,600+67.5% | Added |
| Acadian Asset Management LLC | 256,378 | $522.0K | 0.00% | +256,378 | New |
| Knoll Capital Management, LLC | 260,470 | $536.6K | 0.29% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 265,000 | $545.9K | 0.00% | −185,000−41.1% | Reduced |
| Soleus Capital Management, L.P. | 299,711 | $617.4K | 0.03% | −300,000−50.0% | Reduced |
| Knott David M Jr | 300,337 | $618.7K | 0.26% | −19,000−5.9% | Reduced |
| Millennium Management LLC | 337,503 | $695.3K | 0.00% | −258,170−43.3% | Reduced |
| Bank of America Corp | 438,622 | $903.6K | 0.00% | −390.0% | Reduced |
| BlackRock, Inc. | 444,004 | $914.6K | 0.00% | −11,361−2.5% | Reduced |
| Jane Street Group, LLC | 452,362 | $931.9K | 0.00% | +204,921+82.8% | Added |
| Artia Global Partners LP | 475,361 | $979.2K | 0.17% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 493,378 | $1.02M | 0.00% | +131,836+36.5% | Added |
| Logos Global Management LP | 500,000 | $1.03M | 0.10% | +500,000 | New |
| Renaissance Technologies LLC | 590,871 | $1.22M | 0.00% | −889,600−60.1% | Reduced |
| Marshall Wace, LLP | 767,744 | $1.58M | 0.00% | 00.0% | Unchanged |
| HealthInvest Partners AB | 764,901 | $1.67M | 0.62% | 00.0% | Unchanged |
| Monaco Asset Management SAM | 945,915 | $1.95M | 0.73% | +550,915+139.5% | Added |
| UBS Group AG | 970,667 | $2.00M | 0.00% | +597,162+159.9% | Added |
| Two Sigma Investments, LP | 1,088,096 | $2.24M | 0.00% | +428,938+65.1% | Added |
| Blue Owl Capital Holdings LP | 1,250,000 | $2.58M | 0.80% | +1,250,000 | New |
| FMR LLC | 1,454,900 | $3.00M | 0.00% | −23,600−1.6% | Reduced |
| Schonfeld Strategic Advisors LLC | 1,732,724 | $3.57M | 0.02% | +823,084+90.5% | Added |
| UBS Asset Management Americas Inc | 1,906,775 | $3.93M | 0.00% | +1,906,775 | New |
| Tejara Capital Ltd | 1,906,844 | $3.93M | 2.15% | −523,593−21.5% | Reduced |
| Goldman Sachs Group Inc | 2,364,024 | $4.87M | 0.00% | −726,044−23.5% | Reduced |
| Citadel Advisors LLC | 3,171,632 | $6.53M | 0.01% | +2,410,973+317.0% | Added |
| Morgan Stanley | 3,346,347 | $6.89M | 0.00% | +2,560,970+326.1% | Added |
| Alkeon Capital Management LLC | 3,698,100 | $7.62M | 0.03% | −1,000,000−21.3% | Reduced |
| Clearline Capital LP | 3,834,163 | $7.90M | 0.68% | +216,000+6.0% | Added |
| Rock Springs Capital Management LP | 4,570,649 | $9.42M | 0.55% | +105,357+2.4% | Added |
| 683 Capital Management, LLC | 4,875,000 | $10.0M | 0.91% | +525,000+12.1% | Added |
| Standard Life Aberdeen plc | 5,538,699 | $11.4M | 0.02% | +2,509,827+82.9% | Added |
| Mangrove Partners | 7,790,580 | $16.0M | 1.33% | −845,905−9.8% | Reduced |
| Frazier Life Sciences Management, L.P. | 9,440,112 | $19.4M | 0.58% | 00.0% | Unchanged |
| Rubric Capital Management LP | 15,307,347 | $31.5M | 0.42% | 00.0% | Unchanged |
| Janus Henderson Group PLC | 16,290,130 | $33.6M | 0.02% | −1,398,462−7.9% | Reduced |
| Deerfield Management Company, L.P. (Series C) | 0 | $0 | 0.00% | −6,710,429−100.0% | Sold out |
| Paloma Partners Management Co | 0 | $0 | 0.00% | −296,659−100.0% | Sold out |
| Dauntless Investment Group, LLC | 0 | $0 | 0.00% | −134,122−100.0% | Sold out |
| NEOS Investment Management LLC | 0 | $0 | 0.00% | −102,583−100.0% | Sold out |
| Tema ETFs LLC | 0 | $0 | 0.00% | −102,583−100.0% | Sold out |
| Leonteq Securities AG | 0 | $0 | 0.00% | −100,000−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −59,200−100.0% | Sold out |
| J. Goldman & Co LP | 0 | $0 | 0.00% | −52,384−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −25,399−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −21,176−100.0% | Sold out |
| Cubist Systematic Strategies, LLC | 0 | $0 | 0.00% | −21,099−100.0% | Sold out |
| Marex Group plc | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −1,570−100.0% | Sold out |
| Skopos Labs, Inc. | 0 | $0 | 0.00% | −849−100.0% | Sold out |
| Signaturefd, LLC | 0 | $0 | 0.00% | −187−100.0% | Sold out |
| Transce3nd, LLC | 0 | $0 | 0.00% | −127−100.0% | Sold out |