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, Q1 2026
Institutional positions in Mereo BioPharma Group plc as of Mar 31, 2026. 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
- 63
- −7 vs. Q4 2025
- Shares held
- 75.4M
- +13.3M (+21.5%) vs. Q4 2025
- Total value
- $24.9M
- −$954.6K (−3.7%) vs. Q4 2025
- New holders
- 15
- 15 more added
- Sold out
- 22
- 16 more reduced
Compare with Q4 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, Q1 2026
Shares, value and share of portfolio for each institution holding Mereo BioPharma Group plc; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Sit Investment Associates Inc | 970 | $0 | 0.00% | 00.0% | Unchanged |
| Axiom Investment Management LLC | 1 | $0 | 0.00% | +1 | New |
| BNP Paribas Arbitrage, SA | 3 | $1 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 13 | $4 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 46 | $15 | 0.00% | +46 | New |
| Sound Income Strategies, LLC | 66 | $22 | 0.00% | +66 | New |
| EverSource Wealth Advisors, LLC | 100 | $33 | 0.00% | −317−76.0% | Reduced |
| SBI Securities Co., Ltd. | 114 | $38 | 0.00% | +114 | New |
| Wells Fargo & Company | 230 | $76 | 0.00% | −1,507−86.8% | Reduced |
| New England Capital Financial Advisors LLC | 300 | $99 | 0.00% | 00.0% | Unchanged |
| MAI Capital Management | 309 | $102 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 1,500 | $495 | 0.00% | −111−6.9% | Reduced |
| Advisor Group Holdings, Inc. | 1,500 | $495 | 0.00% | +1,000+200.0% | Added |
| Rockefeller Capital Management L.P. | 2,000 | $660 | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 2,496 | $824 | 0.00% | −12,004−82.8% | Reduced |
| SRS Capital Advisors, Inc. | 4,000 | $1.32K | 0.00% | 00.0% | Unchanged |
| Baader Bank INC | 12,330 | $2.67K | 0.00% | −116,412−90.4% | Reduced |
| Astoria Portfolio Advisors LLC. | 10,000 | $2.80K | 0.00% | 00.0% | Unchanged |
| Pensionmark Financial Group, LLC | 10,000 | $3.30K | 0.00% | +10,000 | New |
| MML Investors Services, LLC | 12,200 | $4.03K | 0.00% | 00.0% | Unchanged |
| IHT Wealth Management, LLC | 15,000 | $4.95K | 0.00% | +15,000 | New |
| Morgan Stanley | 16,425 | $5.42K | 0.00% | −1,257,360−98.7% | Reduced |
| Resources Investment Advisors, LLC. | 18,300 | $6.04K | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 18,750 | $6.19K | 0.00% | +1,750+10.3% | Added |
| Blue Rock Wealth Management LLC | 19,000 | $6.27K | 0.00% | 00.0% | Unchanged |
| GAMMA Investing LLC | 19,274 | $6.36K | 0.00% | +9,713+101.6% | Added |
| Rhumbline Advisers | 19,572 | $6.45K | 0.00% | +426+2.2% | Added |
| JPMorgan Chase & Co | 21,848 | $6.90K | 0.00% | +21,848 | New |
| Engineers Gate Manager LP | 23,954 | $7.91K | 0.00% | −25,844−51.9% | Reduced |
| Centiva Capital, LP | 25,000 | $8.25K | 0.00% | 00.0% | Unchanged |
| Significant Wealth Partners LLC | 25,634 | $8.46K | 0.01% | +3,945+18.2% | Added |
| Clear Harbor Asset Management, LLC | 35,000 | $11.6K | 0.00% | 00.0% | Unchanged |
| Independent Advisor Alliance | 35,227 | $11.6K | 0.00% | +35,227 | New |
| Virtu Financial LLC | 36,458 | $12.0K | 0.00% | +36,458 | New |
| StoneX Group Inc. | 36,873 | $12.2K | 0.00% | +36,873 | New |
| Renaissance Technologies LLC | 48,400 | $16.0K | 0.00% | −145,971−75.1% | Reduced |
| SmartHarvest Portfolios, LLC | 49,512 | $16.3K | 0.01% | +29,222+144.0% | Added |
| Caption Management, LLC | 64,064 | $21.1K | 0.00% | +14,064+28.1% | Added |
| XTX Topco Ltd | 84,469 | $27.9K | 0.00% | +84,469 | New |
| Geode Capital Management, LLC | 92,534 | $30.5K | 0.00% | 00.0% | Unchanged |
| Virtus Investment Advisers, Inc. | 125,662 | $41.5K | 0.01% | +3,067+2.5% | Added |
| Forefront Analytics, LLC | 127,778 | $42.2K | 0.04% | +96,010+302.2% | Added |
| State Street Corp | 133,379 | $44.0K | 0.00% | +2,736+2.1% | Added |
| Jane Street Group, LLC | 139,973 | $46.2K | 0.00% | −216,031−60.7% | Reduced |
| ADAR1 Capital Management, LLC | 150,000 | $49.5K | 0.00% | 00.0% | Unchanged |
| Two Sigma Investments, LP | 187,839 | $62.0K | 0.00% | −337,286−64.2% | Reduced |
| Susquehanna International Group, LLP | 195,920 | $64.7K | 0.00% | +195,920 | New |
| Acadian Asset Management LLC | 209,084 | $68.0K | 0.00% | +147,649+240.3% | Added |
| Knott David M Jr | 300,337 | $99.1K | 0.06% | 00.0% | Unchanged |
| BlackRock, Inc. | 302,991 | $100.0K | 0.00% | −9,622−3.1% | Reduced |
| Rangeley Capital, LLC | 329,200 | $108.6K | 0.12% | −34,800−9.6% | Reduced |
| Group One Trading, L.P. | 335,827 | $110.8K | 0.00% | −105,809−24.0% | Reduced |
| Marshall Wace, LLP | 686,987 | $226.7K | 0.00% | +686,987 | New |
| Wealthspire Advisors, LLC | 796,036 | $262.7K | 0.00% | +796,036 | New |
| UBS Group AG | 1,490,128 | $491.7K | 0.00% | −68,803−4.4% | Reduced |
| Tejara Capital Ltd | 2,037,520 | $672.4K | 0.22% | −122,161−5.7% | Reduced |
| Millennium Management LLC | 3,559,103 | $1.17M | 0.00% | +3,475,457+4,155.0% | Added |
| Newtyn Management, LLC | 7,079,056 | $2.34M | 0.25% | +6,854,434+3,051.5% | Added |
| Defilade Capital Management, L.P. | 7,558,756 | $2.49M | 0.35% | +7,558,756 | New |
| Bank of America Corp | 8,195,287 | $2.70M | 0.00% | +8,169,795+32,048.5% | Added |
| 683 Capital Management, LLC | 12,000,000 | $3.96M | 0.37% | −3,025,000−20.1% | Reduced |
| EcoR1 Capital, LLC | 13,368,855 | $4.41M | 0.19% | +5,512,389+70.2% | Added |
| Rubric Capital Management LP | 15,307,347 | $5.05M | 0.06% | 00.0% | Unchanged |
| Schonfeld Strategic Advisors LLC | 0 | $0 | 0.00% | −6,090,381−100.0% | Sold out |
| Logos Global Management LP | 0 | $0 | 0.00% | −1,850,000−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −1,763,666−100.0% | Sold out |
| Monaco Asset Management SAM | 0 | $0 | 0.00% | −1,585,214−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −1,280,275−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −419,477−100.0% | Sold out |
| EntryPoint Capital, LLC | 0 | $0 | 0.00% | −400,700−100.0% | Sold out |
| Luminus Management LLC | 0 | $0 | 0.00% | −395,000−100.0% | Sold out |
| Quadrature Capital Ltd | 0 | $0 | 0.00% | −266,731−100.0% | Sold out |
| Sphera Funds Management Ltd. | 0 | $0 | 0.00% | −255,400−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −251,900−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −195,814−100.0% | Sold out |
| Graham Capital Management, L.P. | 0 | $0 | 0.00% | −116,286−100.0% | Sold out |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −28,026−100.0% | Sold out |
| Aquatic Capital Management LLC | 0 | $0 | 0.00% | −21,216−100.0% | Sold out |
| PFG Investments, LLC | 0 | $0 | 0.00% | −16,650−100.0% | Sold out |
| QRG Capital Management, Inc. | 0 | $0 | 0.00% | −13,503−100.0% | Sold out |
| AE Wealth Management LLC | 0 | $0 | 0.00% | −12,563−100.0% | Sold out |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −5,500−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −2,231−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −161−100.0% | Sold out |
| Farther Finance Advisors, LLC | 0 | $0 | 0.00% | −17−100.0% | Sold out |