Vault-13

MERUS N V MRUS

COM · Common Stock · CUSIP N5749R100

101 institutional holders
34,582,79834.6m shares reported held*
$692.7mreported value*

* 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

Biggest puts

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

#ManagerLocationShares Value% of their portfolioChangeShares change
1 FEDERATED HERMES, INC. 0.21% of their portfolio PITTSBURGH, PA 3,597,6003.6m $72.1m $72.1m 0.21% —
2 BVF INC/IL 2.85% of their portfolio San Francisco, CA 3,444,4203.4m $69.0m $69.0m 2.85% —
3 Commodore Capital LP 8.43% of their portfolio NEW YORK, NY 2,615,7622.6m $52.4m $52.4m 8.43% —
4 DEERFIELD MANAGEMENT COMPANY, L.P. 1.01% of their portfolio New York, NY 2,521,5532.5m $50.5m $50.5m 1.01% —
5 WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio Boston, MA 1,937,3881.9m $38.8m $38.8m 0.01% —
6 Boxer Capital, LLC 2.14% of their portfolio San Diego, CA 1,900,0001.9m $38.1m $38.1m 2.14% —
7 Medicxi Ventures Management (Jersey) Ltd 13.34% of their portfolio ST. HELIER, Y9 1,600,0001.6m $32.0m $32.0m 13.34% —
8 Aquilo Capital Management, LLC 12.70% of their portfolio SAN FRANCISCO, CA 1,507,1091.5m $30.2m $30.2m 12.70% —
9 Driehaus Capital Management LLC 0.33% of their portfolio Chicago, IL 1,101,2201.1m $22.1m $22.1m 0.33% —
10 Woodline Partners LP 0.31% of their portfolio San Francisco, CA 1,051,9551.1m $21.1m $21.1m 0.31% —
11 FRANKLIN RESOURCES INC 0.01% of their portfolio San Mateo, CA 1,050,8911.1m $21.0m $21.0m 0.01% —
12 MPM BIOIMPACT LLC 4.36% of their portfolio BOSTON, MA 918,310918.3k $18.4m $18.4m 4.36% —
13 Frazier Life Sciences Management, L.P. 1.15% of their portfolio PALO ALTO, CA 746,479746.5k $15.0m $15.0m 1.15% —
14 SAMLYN CAPITAL, LLC 0.24% of their portfolio New York, NY 617,645617.6k $12.4m $12.4m 0.24% —
15 Lynx1 Capital Management LP 11.08% of their portfolio DORADO, PR 613,071613.1k $12.3m $12.3m 11.08% —
16 Paradigm Biocapital Advisors LP 1.59% of their portfolio NEW YORK, NY 564,214564.2k $11.3m $11.3m 1.59% —
17 FMR LLC 0.00% of their portfolio BOSTON, MA 555,586555.6k $11.1m $11.1m 0.00% —
18 AXA S.A. 0.02% of their portfolio PARIS, I0 532,954533.0k $10.7m $10.7m 0.02% —
19 MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio NEW YORK, NY 529,303529.3k $10.6m $10.6m 0.01% —
20 BlackRock Inc. 0.00% of their portfolio New York, NY 521,130521.1k $10.4m $10.4m 0.00% —
21 Polar Capital Holdings Plc 0.06% of their portfolio London, X0 500,000500.0k $10.0m $10.0m 0.06% —
22 Vivo Capital, LLC 0.98% of their portfolio Palo Alto, CA 442,000442.0k $8.9m $8.9m 0.98% —
23 LORD, ABBETT & CO. LLC 0.03% of their portfolio JERSEY CITY, NJ 422,384422.4k $8.5m $8.5m 0.03% —
24 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 364,615364.6k $7.3m $7.3m 0.00% —
25 SPHERA FUNDS MANAGEMENT LTD. 1.11% of their portfolio TEL AVIV, L3 313,326313.3k $6.3m $6.3m 1.11% —
26 TCG Crossover Management, LLC 1.80% of their portfolio PALO ALTO, CA 300,000300.0k $6.0m $6.0m 1.80% —
27 SILVERARC CAPITAL MANAGEMENT, LLC 2.51% of their portfolio BOSTON, MA 295,136295.1k $5.9m $5.9m 2.51% —
28 DAFNA Capital Management LLC 1.49% of their portfolio LOS ANGELES, CA 276,893276.9k $5.5m $5.5m 1.49% —
29 Eversept Partners, LP 0.66% of their portfolio NEW YORK, NY 276,673276.7k $5.5m $5.5m 0.66% —
30 HealthCor Management, L.P. 0.68% of their portfolio NEW YORK, NY 272,890272.9k $5.5m $5.5m 0.68% —
31 Opaleye Management Inc. 2.09% of their portfolio BOSTON, MA 253,200253.2k $5.1m $5.1m 2.09% —
32 MARSHALL WACE, LLP 0.01% of their portfolio LONDON, X0 228,133228.1k $4.6m $4.6m 0.01% —
33 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 189,907189.9k $3.8m $3.8m 0.00% —
34 Tekla Capital Management LLC 0.14% of their portfolio Boston, MA 169,207169.2k $3.4m $3.4m 0.14% —
35 PLATINUM INVESTMENT MANAGEMENT LTD 0.12% of their portfolio SYDNEY AUSTRALIA 2000, C3 146,264146.3k $2.9m $2.9m 0.12% —
36 PURA VIDA INVESTMENTS, LLC 0.41% of their portfolio NEW YORK, NY 135,632135.6k $2.7m $2.7m 0.41% —
37 Schonfeld Strategic Advisors LLC 0.02% of their portfolio NEW YORK, NY 130,392130.4k $2.6m $2.6m 0.02% —
38 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 126,266126.3k $2.5m $2.5m 0.00% —
39 TWO SIGMA ADVISERS, LP 0.01% of their portfolio NEW YORK, NY 115,900115.9k $2.3m $2.3m 0.01% —
40 Sio Capital Management, LLC 0.75% of their portfolio NEW YORK, NY 87,95388.0k $1.8m $1.8m 0.75% —
41 OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 0.02% of their portfolio CHICAGO, IL 77,11677.1k $1.5m $1.5m 0.02% —
42 NORGES BANK 0.00% of their portfolio OSLO, Q8 75,00075.0k $1.5m $1.5m 0.00% —
43 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 72,36072.4k $1.4m $1.4m 0.00% —
44 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 72,20072.2k $1.4m $1.4m 0.00% —
45 VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio San Antonio, TX 69,28069.3k $1.4m $1.4m 0.00% —
46 Swiss National Bank 0.00% of their portfolio ZURICH, V8 67,15467.2k $1.3m $1.3m 0.00% —
47 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 65,77165.8k $1.3m $1.3m 0.00% —
48 ACUTA CAPITAL PARTNERS, LLC 0.53% of their portfolio REDWOOD CITY, CA 59,00059.0k $1.2m $1.2m 0.53% —
49 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 58,80458.8k $1.2m $1.2m 0.00% —
50 Ensign Peak Advisors, Inc 0.00% of their portfolio SALT LAKE CITY, UT 51,77351.8k $1.0m $1.0m 0.00% —
51 ALGERT GLOBAL LLC 0.06% of their portfolio SAN FRANCISCO, CA 51,61751.6k $1.0m $1.0m 0.06% —
52 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 50,34450.3k $1.0m $1.0m 0.00% —
53 Qube Research & Technologies Ltd 0.01% of their portfolio LONDON, X0 44,97145.0k $901.0k $901.0k 0.01% —
54 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 43,51443.5k $872.0k $872.0k 0.00% —
55 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 42,22542.2k $846.0k $846.0k 0.00% —
56 HighVista Strategies LLC 0.42% of their portfolio BOSTON, MA 36,99437.0k $741.0k $741.0k 0.42% —
57 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 36,79236.8k $737.0k $737.0k 0.00% —
58 J. Goldman & Co LP 0.05% of their portfolio NEW YORK, NY 33,06333.1k $662.0k $662.0k 0.05% —
59 Vident Investment Advisory, LLC 0.02% of their portfolio Alpharetta, GA 31,85831.9k $638.0k $638.0k 0.02% —
60 Jump Financial, LLC 0.02% of their portfolio Chicago, IL 31,00031.0k $621.0k $621.0k 0.02% —
61 SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC 0.01% of their portfolio BALA CYNWYD, PA 29,63829.6k $594.0k $594.0k 0.01% —
62 LMR Partners LLP 0.01% of their portfolio LONDON, X0 29,00129.0k $581.0k $581.0k 0.01% —
63 BIT Capital GmbH 0.11% of their portfolio BERLIN, 2M 28,78228.8k $576.5k $576.5k 0.11% —
64 Trexquant Investment LP 0.02% of their portfolio STAMFORD, CT 28,64528.6k $574.0k $574.0k 0.02% —
65 STATE OF WISCONSIN INVESTMENT BOARD 0.00% of their portfolio MADISON, WI 28,24628.2k $566.0k $566.0k 0.00% —
66 Bellevue Group AG 0.01% of their portfolio ZURICH, V8 25,40025.4k $509.0k $509.0k 0.01% —
67 ALPS ADVISORS INC 0.00% of their portfolio Denver, CO 25,02225.0k $501.0k $501.0k 0.00% —
68 DekaBank Deutsche Girozentrale 0.00% of their portfolio FRANKFURT, 2M 25,00025.0k $487.0k $487.0k 0.00% —
69 SANDERS MORRIS HARRIS LLC 0.12% of their portfolio Houston, TX 24,87024.9k $495.0k $495.0k 0.12% —
70 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 24,77024.8k $496.0k $496.0k 0.00% —
71 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 24,35624.4k $488.0k $488.0k 0.00% —
72 TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio STAMFORD, CT 23,04523.0k $462.0k $462.0k 0.01% —
73 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 22,01722.0k $441.0k $441.0k 0.00% —
74 ExodusPoint Capital Management, LP 0.01% of their portfolio NEW YORK, NY 21,93021.9k $439.0k $439.0k 0.01% —
75 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 21,92821.9k $439.2k $439.2k 0.00% —
76 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 20,99321.0k $420.0k $420.0k 0.00% —
77 Allianz Asset Management GmbH 0.00% of their portfolio MUNICH, 2M 17,96318.0k $360.0k $360.0k 0.00% —
78 Mitsubishi UFJ Asset Management Co., Ltd. 0.00% of their portfolio TOKYO, M0 15,53115.5k $311.0k $311.0k 0.00% —
79 UBS Group AG 0.00% of their portfolio ZURICH, V8 14,69014.7k $294.0k $294.0k 0.00% —
80 Walleye Capital LLC 0.01% of their portfolio NEW YORK, NY 12,51812.5k $251.0k $251.0k 0.01% —
81 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 10,96911.0k $220.0k $220.0k 0.00% —
82 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 10,89810.9k $218.0k $218.0k 0.00% —
83 Weiss Multi-Strategy Advisers LLC 0.01% of their portfolio NEW YORK, NY 10,65710.7k $213.0k $213.0k 0.01% —
84 FOX RUN MANAGEMENT, L.L.C. 0.08% of their portfolio GREENWICH, CT 10,31310.3k $207.0k $207.0k 0.08% —
85 Legal & General Group Plc 0.00% of their portfolio London, X0 7,1207.1k $143.0k $143.0k 0.00% —
86 VIRTUS ADVISERS, LLC 0.04% of their portfolio HARTFORD, CT 5,2205.2k $105.0k $105.0k 0.04% —
87 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 4,6974.7k $94.0k $94.0k 0.00% —
88 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 3,2563.3k $66.0k $66.0k 0.00% —
89 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 2,7322.7k $55.0k $55.0k 0.00% —
90 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 2,7272.7k $55.0k $55.0k 0.00% —
91 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 1,3311.3k $26.7k $26.7k 0.00% —
92 MACQUARIE GROUP LTD 0.00% of their portfolio Sydney, NSW 2000, C3 1,3211.3k $34.0k $34.0k 0.00% —
93 NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO 0.00% of their portfolio MILWAUKEE, WI 800800 $16.0k $16.0k 0.00% —
94 FourThought Financial, LLC 0.00% of their portfolio VENICE, FL 752752 $15.0k $15.0k 0.00% —
95 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 653653 $13.0k $13.0k 0.00% —
96 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 429429 $9.0k $9.0k 0.00% —
97 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 125125 $3.0k $3.0k 0.00% —
98 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 100100 $2.0k $2.0k 0.00% —
99 TD Waterhouse Canada Inc. 0.00% of their portfolio TORONTO, A6 9696 $1.9k $1.9k 0.00% —
100 Washington Trust Advisors, Inc. 0.00% of their portfolio WELLESLEY, MA 6060 $1.0k $1.0k 0.00% —