Merus N.V.
MRUSDelisted Dec 30, 2025- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001651311
Merus N.V. was delisted on Dec 30, 2025; its insiders filed their last Form 4 on Dec 30, 2025; 268 institutions reported holding it in 13F filings for Q3 2025, worth $6.70B in total; Soros Fund Management was the only superinvestor holding it.
13F holders, Q3 2025
Institutional positions in Merus N.V. 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
MRUS is no longer listed, so this page shows Q3 2025. 13F filings for later quarters list far fewer holders.
- Institutional holders
- 268
- +67 vs. Q2 2025
- Shares held
- 71.1M
- −3.66M (−4.9%) vs. Q2 2025
- Total value
- $6.70B
- +$2.76B (+70.2%) vs. Q2 2025
- New holders
- 106
- 67 more added
- Sold out
- 39
- 73 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting MRUS 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 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 10 | $5.73M |
| Q3 2025 | 268 | $6.70B |
| Q2 2025 | 201 | $3.93B |
| Q1 2025 | 185 | $2.98B |
| Q4 2024 | 192 | $2.96B |
| Q3 2024 | 189 | $3.45B |
| Q2 2024 | 179 | $3.94B |
| Q1 2024 | 156 | $2.31B |
| Q4 2023 | 131 | $1.41B |
| Q3 2023 | 113 | $1.12B |
| Q2 2023 | 114 | $1.09B |
| Q1 2023 | 104 | $672.0M |
| Q4 2022 | 91 | $563.8M |
| Q3 2022 | 100 | $687.4M |
| Q2 2022 | 93 | $793.4M |
| Q1 2022 | 95 | $878.1M |
| Q4 2021 | 103 | $1.05B |
| Q3 2021 | 64 | $487.8M |
| Q2 2021 | 68 | $564.3M |
| Q1 2021 | 59 | $558.3M |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Merus N.V.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Paradigm Biocapital Advisors LP | 4,373,770 | $411.8M | 12.18% | +91,816+2.1% | Added |
| Avoro Capital Advisors LLC | 3,542,500 | $333.5M | 4.31% | +386,945+12.3% | Added |
| Commodore Capital LP | 3,525,000 | $331.9M | 16.20% | 00.0% | Unchanged |
| Deerfield Management Company, L.P. (Series C) | 3,046,916 | $286.9M | 4.40% | −337,712−10.0% | Reduced |
| HBK Investments L P | 2,850,000 | $268.3M | 3.95% | +2,850,000 | New |
| FMR LLC | 2,810,935 | $264.6M | 0.01% | −4,679,442−62.5% | Reduced |
| BlackRock, Inc. | 2,172,015 | $204.5M | 0.00% | +1,121,073+106.7% | Added |
| Westfield Capital Management Co LP | 2,132,489 | $200.8M | 0.84% | +90,101+4.4% | Added |
| RTW Investments, LP | 2,025,277 | $190.7M | 2.35% | −1,975,276−49.4% | Reduced |
| Woodline Partners LP | 1,674,167 | $157.6M | 0.74% | +131,267+8.5% | Added |
| Glazer Capital, LLC | 1,619,372 | $152.5M | 5.12% | +1,619,372 | New |
| Lynx1 Capital Management LP | 1,534,141 | $144.4M | 29.40% | −34,700−2.2% | Reduced |
| Perceptive Advisors LLC | 1,353,093 | $127.4M | 3.68% | +644,917+91.1% | Added |
| Federated Hermes, Inc. | 1,249,162 | $117.6M | 0.21% | −279,425−18.3% | Reduced |
| Davidson Kempner Capital Management LP | 1,233,909 | $116.2M | 1.63% | +1,233,909 | New |
| Alliancebernstein L.P. | 1,196,325 | $112.6M | 0.04% | +93,969+8.5% | Added |
| Goldman Sachs Group Inc | 1,195,408 | $112.5M | 0.02% | +1,088,790+1,021.2% | Added |
| Price T Rowe Associates Inc | 1,087,143 | $102.4M | 0.01% | −1,174,868−51.9% | Reduced |
| Omni Event Management Ltd | 1,053,500 | $99.2M | 11.46% | +1,053,500 | New |
| Magnetar Financial LLC | 1,045,209 | $98.4M | 0.60% | +1,045,209 | New |
| Pentwater Capital Management LP | 970,000 | $91.3M | 0.82% | +970,000 | New |
| Ameriprise Financial Inc | 898,822 | $84.6M | 0.02% | −235,035−20.7% | Reduced |
| TIG Advisors, LLC | 868,145 | $81.7M | 5.05% | +868,145 | New |
| Alpine Associates Management Inc. | 835,600 | $78.7M | 4.79% | +835,600 | New |
| JPMorgan Chase & Co | 756,013 | $71.2M | 0.00% | +65,068+9.4% | Added |
| Novo Holdings A/S | 750,000 | $70.6M | 4.55% | 00.0% | Unchanged |
| Hudson Bay Capital Management LP | 740,394 | $69.7M | 0.42% | +725,843+4,988.3% | Added |
| Tudor Investment Corp Et Al | 731,150 | $68.8M | 0.45% | +731,150 | New |
| Millennium Management LLC | 699,029 | $65.8M | 0.05% | +683,233+4,325.4% | Added |
| Janus Henderson Group PLC | 662,140 | $62.3M | 0.03% | −167,418−20.2% | Reduced |
| UBS Oconnor LLC | 654,126 | $61.6M | 1.85% | +637,422+3,816.0% | Added |
| Balyasny Asset Management LLC | 644,283 | $60.7M | 0.12% | +644,283 | New |
| Citadel Advisors LLC | 614,538 | $57.9M | 0.05% | +278,944+83.1% | Added |
| Adage Capital Partners GP, L.L.C. | 600,000 | $56.5M | 0.09% | −233,397−28.0% | Reduced |
| Tang Capital Management LLC | 600,000 | $56.5M | 2.17% | 00.0% | Unchanged |
| Rock Springs Capital Management LP | 597,051 | $56.2M | 3.29% | −466,557−43.9% | Reduced |
| UBS Group AG | 581,071 | $54.7M | 0.01% | +3,377+0.6% | Added |
| Baker Bros. Advisors LP | 574,377 | $54.1M | 0.39% | 00.0% | Unchanged |
| Invesco Ltd. | 548,521 | $51.6M | 0.01% | −284,840−34.2% | Reduced |
| Franklin Resources Inc | 501,615 | $47.2M | 0.01% | −1,335,960−72.7% | Reduced |
| Verition Fund Management LLC | 498,900 | $47.0M | 0.27% | +494,923+12,444.6% | Added |
| Wellington Management Group LLP | 459,087 | $43.2M | 0.01% | −3,267,636−87.7% | Reduced |
| Gilead Sciences, Inc. | 452,527 | $42.6M | 2.38% | 00.0% | Unchanged |
| Qube Research & Technologies Ltd | 422,277 | $39.8M | 0.06% | +418,002+9,777.8% | Added |
| Soros Fund Management LLCSuperinvestorSoros Fund Management | 405,000 | $38.1M | 0.60% | +405,000 | New |
| LMR Partners LLP | 390,465 | $36.8M | 0.47% | +390,465 | New |
| First Turn Management, LLC | 372,022 | $35.0M | 5.26% | +79,058+27.0% | Added |
| Man Group plc | 361,703 | $34.1M | 0.07% | +361,703 | New |
| FIL Ltd | 338,000 | $31.8M | 0.03% | +338,000 | New |
| Absolute Gestao de Investimentos Ltda. | 330,588 | $31.1M | 4.11% | +330,588 | New |
| Pictet Asset Management Holding SA | 330,228 | $31.1M | 0.03% | −585,024−63.9% | Reduced |
| Bank of America Corp | 311,566 | $29.3M | 0.00% | +161,604+107.8% | Added |
| Twin Securities, Inc. | 310,263 | $29.2M | 14.72% | +310,263 | New |
| Octagon Capital Advisors LP | 308,000 | $29.0M | 4.53% | −81,000−20.8% | Reduced |
| Artia Global Partners LP | 296,750 | $27.9M | 4.92% | 00.0% | Unchanged |
| Affinity Asset Advisors, LLC | 285,769 | $26.9M | 2.50% | +215,769+308.2% | Added |
| Vanguard Group Inc | 282,882 | $26.6M | 0.00% | +17,521+6.6% | Added |
| Point72 Asset Management, L.P. | 254,751 | $24.0M | 0.05% | +83,974+49.2% | Added |
| State Street Corp | 247,302 | $23.3M | 0.00% | +6,186+2.6% | Added |
| Vivaldi Asset Management, LLC | 245,354 | $23.1M | 1.49% | +245,354 | New |
| Sand Grove Capital Management LLP | 239,378 | $22.5M | 11.01% | +239,378 | New |
| Readystate Asset Management LP | 238,696 | $22.5M | 1.09% | +160,196+204.1% | Added |
| First Light Asset Management, LLC | 224,080 | $21.1M | 1.99% | +224,080 | New |
| DAFNA Capital Management LLC | 220,451 | $20.8M | 5.13% | −178,353−44.7% | Reduced |
| Caligan Partners LP | 216,954 | $20.4M | 2.83% | −440,045−67.0% | Reduced |
| Voya Investment Management LLC | 210,304 | $19.8M | 0.02% | −23,167−9.9% | Reduced |
| CNH Partners LLC | 204,994 | $19.3M | 0.49% | +204,994 | New |
| Versor Investments LP | 198,789 | $18.7M | 3.45% | +198,789 | New |
| Healthcare of Ontario Pension Plan Trust Fund | 192,500 | $18.1M | 0.03% | +192,500 | New |
| Allianz Asset Management GmbH | 192,100 | $18.1M | 0.02% | +166,100+638.8% | Added |
| Decheng Capital LLC | 186,546 | $17.6M | 3.06% | −2,552−1.3% | Reduced |
| Saturn V Capital Management LLC | 184,135 | $17.3M | 3.80% | −40,125−17.9% | Reduced |
| Driehaus Capital Management LLC | 177,508 | $16.7M | 0.12% | −1,188,736−87.0% | Reduced |
| Voloridge Investment Management, LLC | 176,009 | $16.6M | 0.06% | +176,009 | New |
| Carmignac Gestion | 167,532 | $15.8M | 0.23% | −47,190−22.0% | Reduced |
| Holocene Advisors, LP | 166,741 | $15.7M | 0.04% | −2,058,500−92.5% | Reduced |
| Sofinnova Investments, Inc. | 166,729 | $15.7M | 0.96% | −237,833−58.8% | Reduced |
| TimesSquare Capital Management, LLC | 166,002 | $15.6M | 0.22% | −76,696−31.6% | Reduced |
| Standard Life Aberdeen plc | 155,151 | $14.6M | 0.02% | +29,383+23.4% | Added |
| Capstone Investment Advisors, LLC | 152,000 | $14.3M | 0.13% | +152,000 | New |
| Nan Fung Trinity (HK) Ltd | 150,338 | $14.2M | 1.41% | 00.0% | Unchanged |
| Taconic Capital Advisors LP | 145,000 | $13.7M | 4.04% | +145,000 | New |
| Weiss Asset Management LP | 144,902 | $13.6M | 0.19% | +144,902 | New |
| Barclays PLC | 144,035 | $13.6M | 0.00% | +110,393+328.1% | Added |
| HighVista Strategies LLC | 133,321 | $12.6M | 3.08% | +43,559+48.5% | Added |
| Royal Bank of Canada | 132,212 | $12.4M | 0.00% | +5,960+4.7% | Added |
| Victory Capital Management Inc | 131,432 | $12.4M | 0.01% | +19,992+17.9% | Added |
| PFM Health Sciences, LP | 130,742 | $12.3M | 1.05% | −53,140−28.9% | Reduced |
| Harvest Management LLC | 130,000 | $12.2M | 6.01% | +130,000 | New |
| BNP Paribas Arbitrage, SA | 121,783 | $11.5M | 0.01% | −10,793−8.1% | Reduced |
| Boxer Capital Management, LLC | 120,000 | $11.3M | 3.60% | −245,000−67.1% | Reduced |
| Westchester Capital Management, LLC | 114,159 | $10.7M | 0.56% | +114,159 | New |
| Gabelli Funds LLC | 105,050 | $9.89M | 0.07% | +105,050 | New |
| Deutsche Bank AG | 104,110 | $9.80M | 0.00% | −9,398−8.3% | Reduced |
| Gabelli & Co Investment Advisers, Inc. | 103,450 | $9.74M | 1.56% | +103,450 | New |
| Meteora Capital, LLC | 101,162 | $9.52M | 1.01% | +101,162 | New |
| Swiss National Bank | 101,054 | $9.51M | 0.01% | +8,700+9.4% | Added |
| Picton Mahoney Asset Management | 100,000 | $9.41M | 0.12% | +100,000 | New |
| State of Wisconsin Investment Board | 96,224 | $9.06M | 0.02% | −53,319−35.7% | Reduced |
| Water Island Capital LLC | 96,000 | $9.04M | 1.29% | +96,000 | New |