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 ($1.4m this quarter). Holder counts are more reliable. Implied quarter-end price ≈ $26.33. Options: 5 managers hold calls ($1.9m notional), 5 hold puts ($2.0m).
Trends to Q2 2023
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 101 |
| Q4 2022 | 92 |
| Q1 2023 | 105 |
| Q2 2023 | 115 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q4 2022 | 45 | 54 |
| Q1 2023 | 55 | 30 |
| Q2 2023 | 59 | 48 |
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 |
| Q1 2023 | $4.6m | $322.0k | 0.07 |
| Q2 2023 | $1.9m | $2.0m | 1.05 |
Biggest buyers
| SAMLYN CAPITAL, LLC | Added | +1.2m |
| Fairmount Funds Management LLC | Added | +1.1m |
| RTW INVESTMENTS, LP | New | +1.1m |
| Commodore Capital LP | Added | +1.1m |
| DEERFIELD MANAGEMENT COMPANY, L.P. | Added | +651.5k |
| BlackRock Inc. | Added | +584.1k |
| Venrock Adviser, LLC | Added | +500.0k |
| Rock Springs Capital Management LP | New | +478.5k |
| Point72 Asset Management, L.P. | Added | +414.7k |
| MORGAN STANLEY | Added | +274.0k |
Biggest sellers
| BVF INC/IL | Reduced | -1.4m |
| FMR LLC | Reduced | -551.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -462.1k |
| Aquilo Capital Management, LLC | Reduced | -450.0k |
| Vivo Capital, LLC | Sold out | -353.6k |
| Ikarian Capital, LLC | Reduced | -145.5k |
| Artisan Partners Limited Partnership | Sold out | -139.7k |
| CAAS CAPITAL MANAGEMENT LP | Sold out | -100.9k |
| PLATINUM INVESTMENT MANAGEMENT LTD | Reduced | -88.8k |
| STATE STREET CORP | Reduced | -82.7k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $679.3k25.8k shares |
| GROUP ONE TRADING LLC | New | $634.6k24.1k shares |
| CITADEL ADVISORS LLC | Added | $513.4k19.5k shares |
| SIMPLEX TRADING, LLC | Reduced | $73.0k2.8k shares |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | Unchanged | $00 shares |
Biggest puts
| UBS Group AG | New | $1.2m44.6k shares |
| CITADEL ADVISORS LLC | Reduced | $423.9k16.1k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | $231.7k8.8k shares |
| GROUP ONE TRADING LLC | New | $173.8k6.6k 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, Q2 2023
| Manager | Shares | Change |
|---|---|---|
| Commodore Capital LP 11.84% of their portfolio | 4.0m $105.3m | Added +1.1m |
| DEERFIELD MANAGEMENT COMPANY, L.P. 1.70% of their portfolio | 3.0m $79.8m | Added +651.5k |
| SAMLYN CAPITAL, LLC 1.30% of their portfolio | 2.8m $74.7m | Added +1.2m |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 2.7m $70.4m | Reduced -462.1k |
| FEDERATED HERMES, INC. 0.17% of their portfolio | 2.6m $69.5m | Unchanged |
| Boxer Capital, LLC 2.32% of their portfolio | 1.9m $50.0m | Unchanged |
| Venrock Adviser, LLC 7.27% of their portfolio | 1.7m $45.5m | Added +500.0k |
| BVF INC/IL 1.18% of their portfolio | 1.6m $42.2m | Reduced -1.4m |
| Medicxi Ventures Management (Jersey) Ltd 11.80% of their portfolio | 1.6m $42.1m | Unchanged |
| FRANKLIN RESOURCES INC 0.02% of their portfolio | 1.6m $41.9m | Added +1.2k |
| BRAIDWELL LP 1.33% of their portfolio | 1.5m $40.6m | Added +70.1k |
| Fairmount Funds Management LLC 5.50% of their portfolio | 1.5m $39.0m | Added +1.1m |
| BlackRock Inc. 0.00% of their portfolio | 1.2m $31.2m | Added +584.1k |
| Lynx1 Capital Management LP 19.88% of their portfolio | 1.2m $30.3m | Added +84.8k |
| Driehaus Capital Management LLC 0.38% of their portfolio | 1.1m $29.9m | Added +32.2k |
| RTW INVESTMENTS, LP 0.53% of their portfolio | 1.1m $27.7m | New |
| Aquilo Capital Management, LLC 13.39% of their portfolio | 775.1k $20.4m | Reduced -450.0k |
| Polar Capital Holdings Plc 0.14% of their portfolio | 750.0k $19.7m | Unchanged |
| Frazier Life Sciences Management, L.P. 1.17% of their portfolio | 746.5k $19.7m | Unchanged |
| Point72 Asset Management, L.P. 0.06% of their portfolio | 609.2k $16.0m | Added +414.7k |
| FMR LLC 0.00% of their portfolio | 594.6k $15.7m | Reduced -551.4k |
| SILVERARC CAPITAL MANAGEMENT, LLC 5.24% of their portfolio | 589.3k $15.5m | Reduced -79.5k |
| Rock Springs Capital Management LP 0.30% of their portfolio | 478.5k $12.6m | New |
| Carmignac Gestion 0.19% of their portfolio | 414.3k $10.9m | Reduced -60.3k |
| MORGAN STANLEY 0.00% of their portfolio | 395.8k $10.4m | Added +274.0k |
| DAFNA Capital Management LLC 2.77% of their portfolio | 384.9k $10.1m | Added +100.9k |
| TCG Crossover Management, LLC 1.30% of their portfolio | 300.0k $7.9m | Unchanged |
| SPHERA FUNDS MANAGEMENT LTD. 1.57% of their portfolio | 278.3k $7.3m | Reduced -58.7k |
| STATE STREET CORP 0.00% of their portfolio | 206.4k $5.4m | Reduced -82.7k |
| Ally Bridge Group (NY) LLC 6.35% of their portfolio | 199.2k $5.2m | Reduced -76.7k |
| TWO SIGMA ADVISERS, LP 0.01% of their portfolio | 198.0k $5.2m | Added +34.7k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 197.5k $5.2m | Added +142.2k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 180.0k $4.7m | Reduced -35.0k |
| Schonfeld Strategic Advisors LLC 0.04% of their portfolio | 162.5k $4.3m | Added +93.3k |
| Nan Fung Group Holdings Ltd 2.54% of their portfolio | 151.0k $4.0m | Unchanged |
| PLATINUM INVESTMENT MANAGEMENT LTD 0.14% of their portfolio | 150.2k $4.0m | Reduced -88.8k |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.08% of their portfolio | 147.1k $3.9m | Added +32.0k |
| Eversept Partners, LP 0.36% of their portfolio | 131.2k $3.5m | Added +2.2k |
| VANGUARD GROUP INC 0.00% of their portfolio | 123.0k $3.2m | Added +1.3k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 112.5k $3.0m | Added +59.2k |
| DEUTSCHE BANK AG\ 0.00% of their portfolio | 112.3k $3.0m | Reduced -2.9k |
| BARCLAYS PLC 0.00% of their portfolio | 110.2k $2.9m | New |
| Tri Locum Partners LP 1.00% of their portfolio | 101.7k $2.7m | New |
| ALGERT GLOBAL LLC 0.11% of their portfolio | 99.7k $2.6m | Reduced -12.2k |
| VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio | 94.0k $2.5m | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 86.3k $2.3m | Reduced -59.2k |
| Hudson Bay Capital Management LP 0.02% of their portfolio | 81.3k $2.1m | New |
| Parkman Healthcare Partners LLC 0.31% of their portfolio | 67.9k $1.8m | New |
| Swiss National Bank 0.00% of their portfolio | 65.0k $1.7m | Unchanged |
| Ikarian Capital, LLC 0.56% of their portfolio | 63.1k $1.7m | Reduced -145.5k |
| NORGES BANK 0.00% of their portfolio | 60.3k $1.6m | Unchanged |
| Invesco Ltd. 0.00% of their portfolio | 53.1k $1.4m | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 51.0k $1.3m | Reduced -671 |
| Bellevue Group AG 0.02% of their portfolio | 44.5k $1.2m | Reduced -1.2k |
| CREDIT SUISSE AG/ 0.00% of their portfolio | 38.7k $1.0m | Added +3.1k |
| BIT Capital GmbH 0.12% of their portfolio | 38.6k $1.0m | Added +2.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio | 34.4k $904.8k | Added +23.1k |
| HighVista Strategies LLC 0.41% of their portfolio | 34.0k $895.9k | Reduced -11.9k |
| Cubist Systematic Strategies, LLC 0.01% of their portfolio | 33.4k $878.5k | Added +19.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 31.4k $826.0k | Added +6.6k |
| MARSHALL WACE, LLP 0.00% of their portfolio | 31.1k $818.9k | Unchanged |
| Alpha DNA Investment Management LLC 0.43% of their portfolio | 28.8k $758.8k | New |
| BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio | 28.1k $740.3k | Added +27.4k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 26.5k $697.4k | Added +46 |
| STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio | 26.4k $695.0k | Reduced -1.4k |
| DekaBank Deutsche Girozentrale 0.00% of their portfolio | 25.0k $666.0k | Unchanged |
| SANDERS MORRIS HARRIS LLC 0.15% of their portfolio | 24.9k $658.6k | New |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 24.3k $640.1k | Added +7.6k |
| TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio | 22.9k $603.5k | Added +5.3k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 22.5k $592.4k | Reduced -3.1k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 21.9k $403.5k | Unchanged |
| Legal & General Group Plc 0.00% of their portfolio | 21.4k $563.8k | Added +12.9k |
| AE Wealth Management LLC 0.00% of their portfolio | 19.7k $518.7k | New |
| Mach-1 Financial Group, LLC 0.21% of their portfolio | 19.7k $518.7k | New |
| Allianz Asset Management GmbH 0.00% of their portfolio | 18.1k $450.0k | New |
| AMERICAN CENTURY COMPANIES INC 0.00% of their portfolio | 17.1k $449.7k | New |
| Weiss Multi-Strategy Advisers LLC 0.01% of their portfolio | 16.9k $445.0k | Added +2.2k |
| JANE STREET GROUP, LLC 0.00% of their portfolio | 16.8k $441.4k | Reduced -7.2k |
| RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio | 14.0k $369.0k | New |
| INNOVIS ASSET MANAGEMENT LLC 0.13% of their portfolio | 13.3k $350.2k | New |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio | 12.1k $319.5k | Reduced -4.4k |
| JANUS HENDERSON GROUP PLC 0.00% of their portfolio | 11.6k $305.7k | Unchanged |
| BOOTHBAY FUND MANAGEMENT, LLC 0.01% of their portfolio | 11.5k $303.4k | Reduced -26.6k |
| Tower Research Capital LLC (TRC) 0.01% of their portfolio | 11.4k $300.4k | Added +9.4k |
| Verition Fund Management LLC 0.00% of their portfolio | 10.3k $271.2k | Reduced -99 |
| Corton Capital Inc. 0.11% of their portfolio | 9.3k $244.7k | New |
| ARIZONA STATE RETIREMENT SYSTEM 0.00% of their portfolio | 8.5k $222.6k | New |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC 0.00% of their portfolio | 8.2k $215.1k | New |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.00% of their portfolio | 8.2k $215.0k | New |
| Russell Investments Group, Ltd. 0.00% of their portfolio | 5.7k $150.3k | Unchanged |
| EXCHANGE TRADED CONCEPTS, LLC 0.00% of their portfolio | 5.4k $142.7k | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 4.5k $117.9k | Reduced -6.3k |
| Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio | 4.2k $111.5k | Added +2.4k |
| VIRTUS ADVISERS, LLC 0.06% of their portfolio | 4.1k $108.0k | Reduced -3.2k |
| CITIGROUP INC 0.00% of their portfolio | 2.8k $73.2k | Reduced -690 |
| Coppell Advisory Solutions LLC 0.01% of their portfolio | 1.7k $47.1k | New |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 1.6k $41.2k | Added +1.4k |
| SIGNATUREFD, LLC 0.00% of their portfolio | 1.1k $30.0k | Reduced -118 |
| QUADRANT CAPITAL GROUP LLC 0.00% of their portfolio | 910 $24.0k | Unchanged |
| China Universal Asset Management Co., Ltd. 0.00% of their portfolio | 610 $16.1k | Reduced -18 |