MERUS N V MRUS
COM · Common Stock · CUSIP N5749R100
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Implied quarter-end price ≈ $20.03. Options: 2 managers hold calls ($136.0k notional), 2 hold puts ($318.0k).
Biggest calls
| SIMPLEX TRADING, LLC | — | $136.0k6.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | — | $318.0k15.9k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | — | $00 shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
No one currently above 5% in the filings since 19 Dec 2024.
Fell to 5% or below in the last year: Paradigm Biocapital Advisors LP (0.0%, 2026-02-17), GENMAB A/S (0.0%, 2025-12-30), RTW INVESTMENTS, LP (2.7%, 2025-11-14)
Holders, Q3 2022
| Manager | Shares | Change |
|---|---|---|
| FEDERATED HERMES, INC. 0.21% of their portfolio | 3.6m $72.1m | — |
| BVF INC/IL 2.85% of their portfolio | 3.4m $69.0m | — |
| Commodore Capital LP 8.43% of their portfolio | 2.6m $52.4m | — |
| DEERFIELD MANAGEMENT COMPANY, L.P. 1.01% of their portfolio | 2.5m $50.5m | — |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 1.9m $38.8m | — |
| Boxer Capital, LLC 2.14% of their portfolio | 1.9m $38.1m | — |
| Medicxi Ventures Management (Jersey) Ltd 13.34% of their portfolio | 1.6m $32.0m | — |
| Aquilo Capital Management, LLC 12.70% of their portfolio | 1.5m $30.2m | — |
| Driehaus Capital Management LLC 0.33% of their portfolio | 1.1m $22.1m | — |
| Woodline Partners LP 0.31% of their portfolio | 1.1m $21.1m | — |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 1.1m $21.0m | — |
| MPM BIOIMPACT LLC 4.36% of their portfolio | 918.3k $18.4m | — |
| Frazier Life Sciences Management, L.P. 1.15% of their portfolio | 746.5k $15.0m | — |
| SAMLYN CAPITAL, LLC 0.24% of their portfolio | 617.6k $12.4m | — |
| Lynx1 Capital Management LP 11.08% of their portfolio | 613.1k $12.3m | — |
| Paradigm Biocapital Advisors LP 1.59% of their portfolio | 564.2k $11.3m | — |
| FMR LLC 0.00% of their portfolio | 555.6k $11.1m | — |
| AXA S.A. 0.02% of their portfolio | 533.0k $10.7m | — |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 529.3k $10.6m | — |
| BlackRock Inc. 0.00% of their portfolio | 521.1k $10.4m | — |
| Polar Capital Holdings Plc 0.06% of their portfolio | 500.0k $10.0m | — |
| Vivo Capital, LLC 0.98% of their portfolio | 442.0k $8.9m | — |
| LORD, ABBETT & CO. LLC 0.03% of their portfolio | 422.4k $8.5m | — |
| MORGAN STANLEY 0.00% of their portfolio | 364.6k $7.3m | — |
| SPHERA FUNDS MANAGEMENT LTD. 1.11% of their portfolio | 313.3k $6.3m | — |
| TCG Crossover Management, LLC 1.80% of their portfolio | 300.0k $6.0m | — |
| SILVERARC CAPITAL MANAGEMENT, LLC 2.51% of their portfolio | 295.1k $5.9m | — |
| DAFNA Capital Management LLC 1.49% of their portfolio | 276.9k $5.5m | — |
| Eversept Partners, LP 0.66% of their portfolio | 276.7k $5.5m | — |
| HealthCor Management, L.P. 0.68% of their portfolio | 272.9k $5.5m | — |
| Opaleye Management Inc. 2.09% of their portfolio | 253.2k $5.1m | — |
| MARSHALL WACE, LLP 0.01% of their portfolio | 228.1k $4.6m | — |
| STATE STREET CORP 0.00% of their portfolio | 189.9k $3.8m | — |
| Tekla Capital Management LLC 0.14% of their portfolio | 169.2k $3.4m | — |
| PLATINUM INVESTMENT MANAGEMENT LTD 0.12% of their portfolio | 146.3k $2.9m | — |
| PURA VIDA INVESTMENTS, LLC 0.41% of their portfolio | 135.6k $2.7m | — |
| Schonfeld Strategic Advisors LLC 0.02% of their portfolio | 130.4k $2.6m | — |
| VANGUARD GROUP INC 0.00% of their portfolio | 126.3k $2.5m | — |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 115.9k $2.3m | — |
| Sio Capital Management, LLC 0.75% of their portfolio | 88.0k $1.8m | — |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.02% of their portfolio | 77.1k $1.5m | — |
| NORGES BANK 0.00% of their portfolio | 75.0k $1.5m | — |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 72.4k $1.4m | — |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 72.2k $1.4m | — |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 69.3k $1.4m | — |
| Swiss National Bank 0.00% of their portfolio | 67.2k $1.3m | — |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 65.8k $1.3m | — |
| ACUTA CAPITAL PARTNERS, LLC 0.53% of their portfolio | 59.0k $1.2m | — |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 58.8k $1.2m | — |
| Ensign Peak Advisors, Inc 0.00% of their portfolio | 51.8k $1.0m | — |
| ALGERT GLOBAL LLC 0.06% of their portfolio | 51.6k $1.0m | — |
| NORTHERN TRUST CORP 0.00% of their portfolio | 50.3k $1.0m | — |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 45.0k $901.0k | — |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 43.5k $872.0k | — |
| D. E. Shaw & Co., Inc. 0.00% of their portfolio | 42.2k $846.0k | — |
| HighVista Strategies LLC 0.42% of their portfolio | 37.0k $741.0k | — |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 36.8k $737.0k | — |
| J. Goldman & Co LP 0.05% of their portfolio | 33.1k $662.0k | — |
| Vident Investment Advisory, LLC 0.02% of their portfolio | 31.9k $638.0k | — |
| Jump Financial, LLC 0.02% of their portfolio | 31.0k $621.0k | — |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 29.6k $594.0k | — |
| LMR Partners LLP 0.01% of their portfolio | 29.0k $581.0k | — |
| BIT Capital GmbH 0.11% of their portfolio | 28.8k $576.5k | — |
| Trexquant Investment LP 0.02% of their portfolio | 28.6k $574.0k | — |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 28.2k $566.0k | — |
| Bellevue Group AG 0.01% of their portfolio | 25.4k $509.0k | — |
| ALPS ADVISORS INC 0.00% of their portfolio | 25.0k $501.0k | — |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 25.0k $487.0k | — |
| SANDERS MORRIS HARRIS LLC 0.12% of their portfolio | 24.9k $495.0k | — |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 24.8k $496.0k | — |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 24.4k $488.0k | — |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 23.0k $462.0k | — |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 22.0k $441.0k | — |
| ExodusPoint Capital Management, LP 0.01% of their portfolio | 21.9k $439.0k | — |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 21.9k $439.2k | — |
| Cubist Systematic Strategies, LLC 0.00% of their portfolio | 21.0k $420.0k | — |
| Allianz Asset Management GmbH 0.00% of their portfolio | 18.0k $360.0k | — |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 15.5k $311.0k | — |
| UBS Group AG 0.00% of their portfolio | 14.7k $294.0k | — |
| Walleye Capital LLC 0.01% of their portfolio | 12.5k $251.0k | — |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 11.0k $220.0k | — |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 10.9k $218.0k | — |
| Weiss Multi-Strategy Advisers LLC 0.01% of their portfolio | 10.7k $213.0k | — |
| FOX RUN MANAGEMENT, L.L.C. 0.08% of their portfolio | 10.3k $207.0k | — |
| Legal & General Group Plc 0.00% of their portfolio | 7.1k $143.0k | — |
| VIRTUS ADVISERS, LLC 0.04% of their portfolio | 5.2k $105.0k | — |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 4.7k $94.0k | — |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 3.3k $66.0k | — |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 2.7k $55.0k | — |
| CITIGROUP INC 0.00% of their portfolio | 2.7k $55.0k | — |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.3k $26.7k | — |
| MACQUARIE GROUP LTD 0.00% of their portfolio | 1.3k $34.0k | — |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 800 $16.0k | — |
| FourThought Financial, LLC 0.00% of their portfolio | 752 $15.0k | — |
| SIMPLEX TRADING, LLC 0.00% of their portfolio | 653 $13.0k | — |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 429 $9.0k | — |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 125 $3.0k | — |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 100 $2.0k | — |
| TD Waterhouse Canada Inc. 0.00% of their portfolio | 96 $1.9k | — |
| Washington Trust Advisors, Inc. 0.00% of their portfolio | 60 $1.0k | — |