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, Q2 2025
Institutional positions in Mereo BioPharma Group plc as of Jun 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
- 86
- −4 vs. Q1 2025
- Shares held
- 98.7M
- −12.4M (−11.1%) vs. Q1 2025
- Total value
- $267.8M
- +$17.5M (+7.0%) vs. Q1 2025
- New holders
- 12
- 31 more added
- Sold out
- 16
- 19 more reduced
Compare with Q1 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, Q2 2025
Shares, value and share of portfolio for each institution holding Mereo BioPharma Group plc; share changes are against Q1 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Janus Henderson Group PLC | 17,688,592 | $48.1M | 0.02% | −5,046,529−22.2% | Reduced |
| Rubric Capital Management LP | 15,307,347 | $41.5M | 0.67% | 00.0% | Unchanged |
| Frazier Life Sciences Management, L.P. | 9,440,112 | $25.6M | 1.02% | +1,620,249+20.7% | Added |
| Mangrove Partners | 8,636,485 | $23.4M | 2.51% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 6,710,429 | $18.2M | 0.33% | 00.0% | Unchanged |
| Alkeon Capital Management LLC | 4,698,100 | $12.7M | 0.06% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 4,465,292 | $12.1M | 0.75% | −2,218,955−33.2% | Reduced |
| 683 Capital Management, LLC | 4,350,000 | $11.8M | 1.20% | −285,000−6.1% | Reduced |
| Clearline Capital LP | 3,618,163 | $9.81M | 0.86% | +400,269+12.4% | Added |
| Goldman Sachs Group Inc | 3,090,068 | $8.37M | 0.00% | +964,148+45.4% | Added |
| Standard Life Aberdeen plc | 3,028,872 | $8.21M | 0.01% | +840,518+38.4% | Added |
| Tejara Capital Ltd | 2,430,437 | $6.59M | 3.05% | −90,887−3.6% | Reduced |
| Renaissance Technologies LLC | 1,480,471 | $4.01M | 0.01% | +130,000+9.6% | Added |
| FMR LLC | 1,478,500 | $4.01M | 0.00% | +719,400+94.8% | Added |
| Schonfeld Strategic Advisors LLC | 909,640 | $2.47M | 0.02% | −681,416−42.8% | Reduced |
| Morgan Stanley | 785,377 | $2.13M | 0.00% | −1,394,265−64.0% | Reduced |
| Marshall Wace, LLP | 767,744 | $2.08M | 0.00% | 00.0% | Unchanged |
| HealthInvest Partners AB | 764,901 | $2.07M | 0.89% | +374,901+96.1% | Added |
| Citadel Advisors LLC | 760,659 | $2.06M | 0.00% | +417,006+121.3% | Added |
| Two Sigma Investments, LP | 659,158 | $1.79M | 0.00% | +413,952+168.8% | Added |
| Soleus Capital Management, L.P. | 599,711 | $1.63M | 0.11% | −87,242−12.7% | Reduced |
| Millennium Management LLC | 595,673 | $1.61M | 0.00% | +201,242+51.0% | Added |
| Artia Global Partners LP | 475,361 | $1.29M | 0.33% | +54,002+12.8% | Added |
| BlackRock, Inc. | 455,365 | $1.23M | 0.00% | +181,004+66.0% | Added |
| Hudson Bay Capital Management LP | 450,000 | $1.22M | 0.01% | 00.0% | Unchanged |
| Bank of America Corp | 438,661 | $1.19M | 0.00% | −90.0% | Reduced |
| Monaco Asset Management SAM | 395,000 | $1.07M | 0.41% | −21,468−5.2% | Reduced |
| UBS Group AG | 373,505 | $1.01M | 0.00% | −558,516−59.9% | Reduced |
| Susquehanna International Group, LLP | 361,542 | $979.8K | 0.00% | +187,164+107.3% | Added |
| Cantor Fitzgerald, L. P. | 342,957 | $929.4K | 0.02% | −12,043−3.4% | Reduced |
| Knott David M Jr | 319,337 | $865.4K | 0.39% | 00.0% | Unchanged |
| Paloma Partners Management Co | 296,659 | $803.9K | 0.18% | +296,659 | New |
| Knoll Capital Management, LLC | 260,470 | $705.9K | 0.50% | 00.0% | Unchanged |
| Jane Street Group, LLC | 247,441 | $670.6K | 0.00% | +102,638+70.9% | Added |
| Simplex Trading, LLC | 201,141 | $545.0K | 0.01% | +197,024+4,785.6% | Added |
| Caption Management, LLC | 197,599 | $535.5K | 0.05% | +92,816+88.6% | Added |
| Two Sigma Advisers, LP | 144,600 | $391.9K | 0.00% | +115,300+393.5% | Added |
| Group One Trading, L.P. | 139,559 | $378.2K | 0.01% | +105,278+307.1% | Added |
| Dauntless Investment Group, LLC | 134,122 | $363.5K | 1.71% | +134,122 | New |
| Nomura Holdings Inc | 125,000 | $338.8K | 0.00% | +125,000 | New |
| NEOS Investment Management LLC | 102,583 | $278.0K | 0.00% | −552,083−84.3% | Reduced |
| Tema ETFs LLC | 102,583 | $278.0K | 0.07% | −552,083−84.3% | Reduced |
| Leonteq Securities AG | 100,000 | $271.0K | 0.02% | +100,000 | New |
| Geode Capital Management, LLC | 92,534 | $250.8K | 0.00% | +378+0.4% | Added |
| XTX Topco Ltd | 69,341 | $187.9K | 0.01% | +69,341 | New |
| Point72 Asset Management, L.P. | 59,200 | $160.4K | 0.00% | +23,384+65.3% | Added |
| J. Goldman & Co LP | 52,384 | $142.0K | 0.00% | −27,003−34.0% | Reduced |
| State Street Corp | 44,942 | $121.8K | 0.00% | −717−1.6% | Reduced |
| Clear Harbor Asset Management, LLC | 42,000 | $113.8K | 0.01% | 00.0% | Unchanged |
| Avanza Fonder AB | 38,235 | $103.6K | 0.00% | +10,114+36.0% | Added |
| PFG Investments, LLC | 37,433 | $101.4K | 0.01% | 00.0% | Unchanged |
| Blue Rock Wealth Management LLC | 37,000 | $100.3K | 0.07% | +37,000 | New |
| Virtus Investment Advisers, Inc. | 33,825 | $91.7K | 0.03% | −10,182−23.1% | Reduced |
| Aquatic Capital Management LLC | 26,930 | $73.0K | 0.00% | +26,930 | New |
| Quadrature Capital Ltd | 25,399 | $69.1K | 0.00% | +2,712+12.0% | Added |
| Centiva Capital, LP | 25,000 | $67.8K | 0.00% | 00.0% | Unchanged |
| Significant Wealth Partners LLC | 22,261 | $60.3K | 0.03% | +8,490+61.7% | Added |
| Graham Capital Management, L.P. | 21,176 | $57.4K | 0.00% | −28,242−57.1% | Reduced |
| Cubist Systematic Strategies, LLC | 21,099 | $57.2K | 0.00% | +21,099 | New |
| Squarepoint Ops LLC | 20,668 | $56.0K | 0.00% | +2,737+15.3% | Added |
| Golden State Equity Partners | 19,900 | $53.9K | 0.01% | 00.0% | Unchanged |
| Forefront Analytics, LLC | 19,138 | $51.9K | 0.06% | −28,492−59.8% | Reduced |
| Resources Investment Advisors, LLC. | 18,300 | $49.6K | 0.00% | 00.0% | Unchanged |
| Sheets Smith Investment Management | 16,890 | $45.8K | 0.04% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 13,000 | $35.2K | 0.01% | +2,000+18.2% | Added |
| Level Four Advisory Services, LLC | 10,000 | $27.1K | 0.00% | 00.0% | Unchanged |
| Marex Group plc | 10,000 | $27.1K | 0.00% | 00.0% | Unchanged |
| Rhumbline Advisers | 9,878 | $26.8K | 0.00% | +3,290+49.9% | Added |
| GAMMA Investing LLC | 9,257 | $25.1K | 0.00% | +877+10.5% | Added |
| Advisor Group Holdings, Inc. | 5,377 | $14.6K | 0.00% | +2,314+75.5% | Added |
| Caitong International Asset Management Co., Ltd | 4,544 | $12.3K | 0.01% | +3,060+206.2% | Added |
| SRS Capital Advisors, Inc. | 4,000 | $10.8K | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 1,637 | $4.44K | 0.00% | +137+9.1% | Added |
| Raymond James Financial Inc | 1,570 | $4.25K | 0.00% | +1,570 | New |
| GPS Wealth Strategies Group, LLC | 1,500 | $4.07K | 0.00% | 00.0% | Unchanged |
| Sit Investment Associates Inc | 970 | $3.00K | 0.00% | 00.0% | Unchanged |
| Skopos Labs, Inc. | 849 | $2.30K | 0.00% | +849 | New |
| EverSource Wealth Advisors, LLC | 470 | $1.27K | 0.00% | +470 | New |
| MAI Capital Management | 309 | $838 | 0.00% | 00.0% | Unchanged |
| New England Capital Financial Advisors LLC | 300 | $813 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 230 | $622 | 0.00% | −1,000−81.3% | Reduced |
| Signaturefd, LLC | 187 | $507 | 0.00% | +187 | New |
| Transce3nd, LLC | 127 | $344 | 0.00% | 00.0% | Unchanged |
| Principal Securities, Inc. | 75 | $203 | 0.00% | +43+134.4% | Added |
| US Bancorp | 13 | $35 | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 3 | $8 | 0.00% | 00.0% | Unchanged |
| Adage Capital Partners GP, L.L.C. | 0 | $0 | 0.00% | −1,700,756−100.0% | Sold out |
| UBS Asset Management Americas Inc | 0 | $0 | 0.00% | −1,569,100−100.0% | Sold out |
| Great Point Partners LLC | 0 | $0 | 0.00% | −1,275,000−100.0% | Sold out |
| Woodline Partners LP | 0 | $0 | 0.00% | −947,986−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −876,961−100.0% | Sold out |
| Integral Health Asset Management, LLC | 0 | $0 | 0.00% | −800,000−100.0% | Sold out |
| Acuta Capital Partners, LLC | 0 | $0 | 0.00% | −791,815−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −113,247−100.0% | Sold out |
| BIT Capital GmbH | 0 | $0 | 0.00% | −101,070−100.0% | Sold out |
| Diadema Partners LP | 0 | $0 | 0.00% | −492,215−100.0% | Sold out |
| Ameriprise Financial Inc | 0 | $0 | 0.00% | −39,030−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −15,713−100.0% | Sold out |
| HSBC Holdings PLC | 0 | $0 | 0.00% | −13,577−100.0% | Sold out |
| ADAR1 Capital Management, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |