Mereo BioPharma Group plc (NASDAQ:MREO) appears in 70 institutional 13F filings for the quarter ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| Rubric Capital Management LP | 31 Mar, 2026 | 15,307,347 | 0 | 0.00% | $5,051,425.00 |
| EcoR1 Capital, LLC | 31 Mar, 2026 | 13,368,855 | 5,512,389 | 70.16% | $4,411,722.00 |
| 683 Capital Management, LLC | 31 Mar, 2026 | 12,000,000 | -3,025,000 | -20.13% | $3,960,000.00 |
| Bank Of America Corp /De/ | 31 Mar, 2026 | 8,195,287 | 8,169,795 | 32,048.47% | $2,704,445.00 |
| Defilade Capital Management, L.P. | 31 Mar, 2026 | 7,558,756 | 7,558,756 | 0.00% | $2,494,389.00 |
| Newtyn Management, LLC | 31 Mar, 2026 | 7,079,056 | 6,854,434 | 3,051.54% | $2,336,088.00 |
| MILLENNIUM MANAGEMENT LLC | 31 Mar, 2026 | 3,559,103 | 3,475,457 | 4,154.96% | $1,174,504.00 |
| Tejara Capital Ltd | 31 Mar, 2026 | 2,037,520 | -122,161 | -5.66% | $672,382.00 |
| UBS Group AG | 31 Mar, 2026 | 1,490,128 | -68,803 | -4.41% | $491,742.00 |
| Wealthspire Advisors, LLC | 31 Mar, 2026 | 796,036 | 796,036 | 0.00% | $262,692.00 |
| MARSHALL WACE, LLP | 31 Mar, 2026 | 686,987 | 686,987 | 0.00% | $226,706.00 |
| GROUP ONE TRADING LLC | 31 Mar, 2026 | 335,827 | -105,809 | -23.96% | $110,823.00 |
| Rangeley Capital, LLC | 31 Mar, 2026 | 329,200 | -34,800 | -9.56% | $108,636.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 302,991 | -9,622 | -3.08% | $99,986.00 |
| Knott David M Jr | 31 Mar, 2026 | 300,337 | 0 | 0.00% | $99,111.00 |
| ACADIAN ASSET MANAGEMENT LLC | 31 Mar, 2026 | 209,084 | 147,649 | 240.33% | $68.00 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 31 Mar, 2026 | 195,920 | 195,920 | 0.00% | $64,654.00 |
| TWO SIGMA INVESTMENTS, LP | 31 Mar, 2026 | 187,839 | -337,286 | -64.23% | $61,987.00 |
| ADAR1 Capital Management, LLC | 31 Mar, 2026 | 150,000 | -150,000 | -50.00% | $49,500.00 |
| JANE STREET GROUP, LLC | 31 Mar, 2026 | 139,973 | -216,031 | -60.68% | $46,191.00 |