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 ≈ $15.47. Options: 4 managers hold calls ($626.1k notional), 2 hold puts ($51.1k).
Trends to Q4 2022
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 101 |
| Q4 2022 | 92 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2022 | $136.0k | $318.0k | 2.34 |
| Q4 2022 | $626.1k | $51.1k | 0.08 |
Biggest buyers
| WELLINGTON MANAGEMENT GROUP LLP | Added | +1.8m |
| Venrock Adviser, LLC | New | +1.2m |
| FRANKLIN RESOURCES INC | Added | +539.7k |
| Carmignac Gestion | New | +449.7k |
| FEDERATED HERMES, INC. | Added | +326.7k |
| Polar Capital Holdings Plc | Added | +250.0k |
| Lynx1 Capital Management LP | Added | +241.5k |
| SAMLYN CAPITAL, LLC | Added | +208.4k |
| Ikarian Capital, LLC | New | +156.0k |
| Artisan Partners Limited Partnership | New | +139.7k |
Biggest sellers
| Woodline Partners LP | Sold out | -1.1m |
| MPM BIOIMPACT LLC | Sold out | -918.3k |
| Paradigm Biocapital Advisors LP | Sold out | -564.2k |
| AXA S.A. | Sold out | -533.0k |
| BVF INC/IL | Reduced | -466.0k |
| LORD, ABBETT & CO. LLC | Sold out | -422.4k |
| HealthCor Management, L.P. | Sold out | -272.9k |
| Opaleye Management Inc. | Sold out | -253.2k |
| MARSHALL WACE, LLP | Reduced | -197.0k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -188.6k |
Biggest calls
| CITADEL ADVISORS LLC | New | $399.1k25.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $211.9k13.7k shares |
| SIMPLEX TRADING, LLC | Reduced | $15.0k1.0k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| CITADEL ADVISORS LLC | New | $51.1k3.3k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $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, Q4 2022
| Manager | Shares | Change |
|---|---|---|
| FEDERATED HERMES, INC. 0.17% of their portfolio | 3.9m $60.7m | Added +326.7k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 3.7m $57.1m | Added +1.8m |
| BVF INC/IL 1.94% of their portfolio | 3.0m $46.1m | Reduced -466.0k |
| Commodore Capital LP 6.37% of their portfolio | 2.7m $42.3m | Added +116.8k |
| DEERFIELD MANAGEMENT COMPANY, L.P. 0.76% of their portfolio | 2.4m $36.8m | Reduced -141.1k |
| BRAIDWELL LP 1.04% of their portfolio | 2.0m $30.9m | First filing |
| Boxer Capital, LLC 1.55% of their portfolio | 1.9m $29.4m | Unchanged |
| Medicxi Ventures Management (Jersey) Ltd 10.40% of their portfolio | 1.6m $24.8m | Unchanged |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 1.6m $24.6m | Added +539.7k |
| Aquilo Capital Management, LLC 9.86% of their portfolio | 1.4m $22.2m | Reduced -75.0k |
| Venrock Adviser, LLC 3.20% of their portfolio | 1.2m $19.0m | New |
| Driehaus Capital Management LLC 0.25% of their portfolio | 1.1m $16.6m | Reduced -27.7k |
| Lynx1 Capital Management LP 11.43% of their portfolio | 854.6k $13.2m | Added +241.5k |
| SAMLYN CAPITAL, LLC 0.25% of their portfolio | 826.1k $12.8m | Added +208.4k |
| Polar Capital Holdings Plc 0.09% of their portfolio | 750.0k $11.6m | Added +250.0k |
| Frazier Life Sciences Management, L.P. 0.72% of their portfolio | 746.5k $11.5m | Unchanged |
| BlackRock Inc. 0.00% of their portfolio | 633.2k $9.8m | Added +112.0k |
| FMR LLC 0.00% of their portfolio | 474.8k $7.3m | Reduced -80.8k |
| Carmignac Gestion 0.13% of their portfolio | 449.7k $7.0m | New |
| Vivo Capital, LLC 0.78% of their portfolio | 438.6k $6.8m | Reduced -3.4k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 340.7k $5.3m | Reduced -188.6k |
| SPHERA FUNDS MANAGEMENT LTD. 1.54% of their portfolio | 317.0k $4.9m | Added +3.7k |
| TCG Crossover Management, LLC 0.82% of their portfolio | 300.0k $4.6m | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 281.1k $4.3m | Added +91.2k |
| SILVERARC CAPITAL MANAGEMENT, LLC 1.46% of their portfolio | 274.7k $4.2m | Reduced -20.4k |
| DAFNA Capital Management LLC 1.18% of their portfolio | 269.9k $4.2m | Reduced -7.0k |
| MORGAN STANLEY 0.00% of their portfolio | 218.9k $3.4m | Reduced -145.8k |
| PLATINUM INVESTMENT MANAGEMENT LTD 0.11% of their portfolio | 191.4k $3.0m | Added +45.1k |
| Eversept Partners, LP 0.28% of their portfolio | 184.6k $2.9m | Reduced -92.1k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 171.5k $2.7m | Added +55.6k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 160.3k $2.5m | Added +101.5k |
| Ikarian Capital, LLC 1.00% of their portfolio | 156.0k $2.4m | New |
| Artisan Partners Limited Partnership 0.00% of their portfolio | 139.7k $2.2m | New |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 139.4k $2.2m | Added +117.4k |
| VANGUARD GROUP INC 0.00% of their portfolio | 121.7k $1.9m | Reduced -4.5k |
| Nan Fung Group Holdings Ltd 1.00% of their portfolio | 93.8k $1.5m | New |
| Tekla Capital Management LLC 0.05% of their portfolio | 92.3k $1.4m | Reduced -76.9k |
| ALGERT GLOBAL LLC 0.08% of their portfolio | 90.6k $1.4m | Added +39.0k |
| Sio Capital Management, LLC 0.73% of their portfolio | 88.0k $1.4m | Unchanged |
| NORGES BANK 0.00% of their portfolio | 75.0k $1.2m | Unchanged |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 72.4k $1.1m | Unchanged |
| Swiss National Bank 0.00% of their portfolio | 72.0k $1.1m | Added +4.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 63.7k $986.2k | Added +27.0k |
| TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio | 59.8k $925.0k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 57.9k $896.1k | Reduced -7.8k |
| Vident Investment Advisory, LLC 0.03% of their portfolio | 55.0k $850.9k | Added +23.1k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 52.5k $812.5k | Added +2.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 46.6k $721.0k | Reduced -25.6k |
| Bellevue Group AG 0.01% of their portfolio | 45.7k $707.0k | Added +20.3k |
| Schonfeld Strategic Advisors LLC 0.01% of their portfolio | 45.4k $701.7k | Reduced -85.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 42.2k $653.0k | Reduced -27.1k |
| ALPS ADVISORS INC 0.00% of their portfolio | 31.4k $485.5k | Added +6.4k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 31.1k $481.1k | Reduced -197.0k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 30.9k $478.7k | Added +8.9k |
| BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio | 27.3k $422.6k | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 26.7k $413.4k | Reduced -1.5k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 25.9k $400.7k | Added +1.5k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 25.5k $393.9k | Added +14.5k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 25.0k $384.0k | Unchanged |
| SANDERS MORRIS HARRIS LLC 0.15% of their portfolio | 24.9k $384.7k | Unchanged |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 24.8k $383.0k | Unchanged |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 23.2k $359.0k | Added +170 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 21.9k $339.2k | Unchanged |
| SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio | 21.2k $327.8k | Reduced -8.4k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 15.4k $240.1k | Reduced -159 |
| Qube Research & Technologies Ltd 0.00% of their portfolio | 13.1k $203.0k | Reduced -31.8k |
| Weiss Multi-Strategy Advisers LLC 0.00% of their portfolio | 10.4k $161.0k | Reduced -250 |
| VIRTUS ADVISERS, LLC 0.08% of their portfolio | 10.1k $156.3k | Added +4.9k |
| Legal & General Group Plc 0.00% of their portfolio | 8.1k $124.8k | Added +945 |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 5.3k $82.4k | New |
| BIT Capital GmbH 0.02% of their portfolio | 4.9k $76.0k | Reduced -23.9k |
| CITIGROUP INC 0.00% of their portfolio | 3.5k $54.6k | Added +803 |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 2.9k $44.6k | New |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 2.6k $40.0k | Reduced -144 |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 1.7k $27.0k | Reduced -3.0k |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 1.0k $15.9k | Reduced -306 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio | 800 $12.4k | Unchanged |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 471 $7.3k | Added +42 |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 300 $4.6k | Reduced -43.2k |
| Atle Fund Management AB 0.01% of their portfolio | 286 $4.4k | New |
| Daiwa Securities Group Inc. 0.00% of their portfolio | 186 $3.0k | Added +61 |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 161 $2.0k | Reduced -3.1k |
| PNC Financial Services Group, Inc. 0.00% of their portfolio | 100 $1.5k | Unchanged |
| UBS Group AG 0.00% of their portfolio | 100 $1.5k | Reduced -14.6k |
| NewEdge Advisors, LLC 0.00% of their portfolio | 100 $2 | New |
| TD Waterhouse Canada Inc. 0.00% of their portfolio | 96 $1.5k | Unchanged |
| SIGNATUREFD, LLC 0.00% of their portfolio | 93 $1.4k | New |
| QUADRANT CAPITAL GROUP LLC 0.00% of their portfolio | 93 $1.4k | New |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 84 $1.0k | New |
| Lindbrook Capital, LLC 0.00% of their portfolio | 65 $1.0k | New |
| Washington Trust Advisors, Inc. 0.00% of their portfolio | 60 $928 | Unchanged |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio | 0 $0 | Unchanged |