MEREO BIOPHARMA GROUP PL-ADR (MREO) Institutional Ownership Changes & 13F Activity
MEREO BIOPHARMA GROUP PL-ADR (MREO). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Rubric Capital Management Lp, 683 Capital Management, Llc, Ecor1 Capital, Llc, Schonfeld Strategic Advisors Llc, and Logos Global Management Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Astoria Portfolio Advisors Llc. | Buy | +10,000 | — | 10,000 | $4.03K | Q4 2025 | Feb 24, 2026 |
| 683 Capital Management, Llc | Buy | +15,025,000 | — | 15,025,000 | $6.26M | Q4 2025 | Feb 17, 2026 |
| Ecor1 Capital, Llc | Buy | +7,856,466 | — | 7,856,466 | $3.27M | Q4 2025 | Feb 17, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +6,090,381 | — | 6,090,381 | $2.54M | Q4 2025 | Feb 17, 2026 |
| Logos Global Management Lp | Buy | +1,850,000 | — | 1,850,000 | $770.89K | Q4 2025 | Feb 17, 2026 |
| Balyasny Asset Management L.P. | Buy | +1,280,275 | — | 1,280,275 | $533.49K | Q4 2025 | Feb 17, 2026 |
| Two Sigma Investments, Lp | Buy | +525,125 | — | 525,125 | $218.82K | Q4 2025 | Feb 17, 2026 |
| Luminus Management Llc | Buy | +395,000 | — | 395,000 | $164.60K | Q4 2025 | Feb 17, 2026 |
| Rangeley Capital, Llc | Buy | +364,000 | — | 364,000 | $151.68K | Q4 2025 | Feb 17, 2026 |
| Quadrature Capital Ltd | Buy | +266,731 | — | 266,731 | $111.15K | Q4 2025 | Feb 17, 2026 |
| Sphera Funds Management Ltd. | Buy | +255,400 | — | 255,400 | $106.42K | Q4 2025 | Feb 17, 2026 |
| Two Sigma Advisers, Lp | Buy | +251,900 | — | 251,900 | $104.97K | Q4 2025 | Feb 17, 2026 |
| Newtyn Management, Llc | Buy | +224,622 | — | 224,622 | $93.60K | Q4 2025 | Feb 17, 2026 |
| Adar1 Capital Management, Llc | Buy | +150,000 | — | 150,000 | $62.51K | Q4 2025 | Feb 17, 2026 |
| Virtus Investment Advisers, Llc | Buy | +122,595 | — | 122,595 | $51.09K | Q4 2025 | Feb 17, 2026 |
| Graham Capital Management, L.P. | Buy | +116,286 | — | 116,286 | $48.46K | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +83,646 | — | 83,646 | $34.85K | Q4 2025 | Feb 17, 2026 |
| Caption Management, Llc | Buy | +50,000 | — | 50,000 | $20.84K | Q4 2025 | Feb 17, 2026 |
| Engineers Gate Manager Lp | Buy | +49,798 | — | 49,798 | $20.75K | Q4 2025 | Feb 17, 2026 |
| Forefront Analytics, Llc | Buy | +31,768 | — | 31,768 | $13.24K | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +25,492 | — | 25,492 | $10.60K | Q4 2025 | Feb 17, 2026 |
| Aquatic Capital Management Llc | Buy | +21,216 | — | 21,216 | $8.84K | Q4 2025 | Feb 17, 2026 |
| Toronto Dominion Bank | Buy | +5,500 | — | 5,500 | $2.29K | Q4 2025 | Feb 17, 2026 |
| Rockefeller Capital Management L.P. | Buy | +2,000 | — | 2,000 | $833.00 | Q4 2025 | Feb 17, 2026 |
| Osaic Holdings, Inc. | Buy | +500 | — | 500 | $208.00 | Q4 2025 | Feb 17, 2026 |
| Rubric Capital Management Lp | Buy | +15,307,347 | — | 15,307,347 | $6.38M | Q4 2025 | Feb 13, 2026 |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | Buy | +1,763,666 | — | 1,763,666 | $735.45K | Q4 2025 | Feb 13, 2026 |
| Morgan Stanley | Buy | +1,273,785 | — | 1,273,785 | $530.79K | Q4 2025 | Feb 13, 2026 |
| Citigroup Inc | Buy | +195,814 | — | 195,814 | $81.60K | Q4 2025 | Feb 13, 2026 |
| State Street Corp | Buy | +130,643 | — | 130,643 | $54.44K | Q4 2025 | Feb 13, 2026 |
Frequently asked questions about MREO activity
Which institutional owners are buying MREO?
Institutional owners buying MREO include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in MREO activity?
"Buy" means an investor increased their reported position in MREO compared to the prior reporting period. This reflects growing exposure to MEREO BIOPHARMA GROUP PL-ADR (MREO) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in MREO increasing?
Institutional interest in MREO can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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