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NewAmsterdam Pharma Co N.V.
$34.83 -0.34 (-0.97%) At close · Jul 2
Market Cap
$4.07B
Shares
116,903,979

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 170
Total Value: $3,979,272,362
Total Shares: 124,311,873
Showing 1–100 of 179 holdings by value · page 1 of 2

Institutional Ownership Trend

15 quarters

Superinvestors Holding NAMS

All superinvestors →
Andreas Halvorsen $134,556,179 Stanley Druckenmiller $98,275,373

Holder Concentration

Across 171 13F filers
Top Holder
13.6%
Jun 2023 → Mar 2026 · range 13.6% – 29.3%
of institutional value
Top 5
44.7%
Jun 2023 → Mar 2026 · range 44.1% – 84.5%
of institutional value
Top 10
64.0%
Jun 2023 → Mar 2026 · range 63.6% – 95.9%
of institutional value
HHI
549
Jun 2023 → Mar 2026 · range 548 – 1,962
Broadly held
Showing 100 of 179
All Common Calls Puts
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Holder Value (USD) % of 13F Shares Open
Mid Frazier Life Sciences Management, L.P. $542,370,205 13.63% 16,943,774
Mega Capital World Investors $355,600,178 8.94% 11,109,034
Mid RA CAPITAL MANAGEMENT, L.P. $305,701,613 7.68% 9,550,191
Small FCPM III SERVICES B.V. $294,456,788 7.40% 9,198,900
Mega FMR LLC $280,593,608 7.05% 8,765,811
Mid Bain Capital Life Sciences Investors, LLC $233,883,177 5.88% 7,306,566
Mega WELLINGTON MANAGEMENT GROUP LLP $163,757,332 4.12% 5,115,818
Mid DEERFIELD MANAGEMENT COMPANY, L.P. $136,515,895 3.43% 4,264,789
Large VIKING GLOBAL INVESTORS LP $134,556,179 3.38% 4,203,567
Mid Duquesne Family Office LLC Family Office $98,275,373 2.47% 3,070,146
Large Polar Capital Holdings Plc $90,639,740 2.28% 2,831,607
Mega JENNISON ASSOCIATES LLC $88,040,399 2.21% 2,750,403
Small Medicxi Ventures Management (Jersey) Ltd $85,600,565 2.15% 2,674,182
Mega JANUS HENDERSON GROUP PLC $72,310,077 1.82% 2,258,984
Large WESTFIELD CAPITAL MANAGEMENT CO LP $70,515,245 1.77% 2,202,913
Mid MAVERICK CAPITAL LTD $69,986,728 1.76% 2,186,402
Mega GOLDMAN SACHS GROUP INC $62,303,431 1.57% 1,946,374
Mega Capital International Investors $46,130,603 1.16% 1,441,131
Mega ALLIANCEBERNSTEIN L.P. $38,390,393 0.96% 1,199,325
Large ADAGE CAPITAL PARTNERS GP, L.L.C. $35,423,258 0.89% 1,106,631
Mid Castle Hook Partners LP $33,374,810 0.84% 1,042,637
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $30,647,717 0.77% 957,442
Mid Cormorant Asset Management, LP $30,409,500 0.76% 950,000
Mega BlackRock, Inc. $28,380,570 0.71% 886,616
Mega JPMORGAN CHASE & CO $28,304,136 0.71% 884,228
Mega BANK OF AMERICA CORP /DE/ Bank $27,115,317 0.68% 847,089
Large Aberdeen Group plc $26,792,530 0.67% 837,005
Mega UBS Group AG $25,447,180 0.64% 794,976
Mega FRANKLIN RESOURCES INC $24,652,820 0.62% 770,160
Mega AMERIPRISE FINANCIAL INC $24,105,257 0.61% 753,054
Large Woodline Partners LP $24,081,379 0.61% 752,308
Mid TimesSquare Capital Management, LLC $24,071,135 0.60% 751,988
Mega CITADEL ADVISORS LLC $22,793,168 0.57% 712,064
Mid NWI MANAGEMENT LP $22,471,020 0.56% 702,000
Mid Logos Global Management LP $19,206,000 0.48% 600,000
Mid Rock Springs Capital Management LP $18,847,295 0.47% 588,794
Small First Turn Management, LLC $17,872,335 0.45% 558,336
Mega MORGAN STANLEY $17,789,906 0.45% 555,761
Mega AMERICAN CENTURY COMPANIES INC $16,627,754 0.42% 519,455
Small Artia Global Partners LP $16,130,991 0.41% 503,936
Large Handelsbanken Fonder AB $13,408,989 0.34% 418,900
Mid KENNEDY CAPITAL MANAGEMENT LLC $13,075,828 0.33% 408,492
Mega Bank of New York Mellon Corp Bank $12,125,386 0.30% 378,800
Small Decheng Capital LLC $10,405,074 0.26% 325,057
Mid Slate Path Capital LP $10,211,190 0.26% 319,000
Mega MILLENNIUM MANAGEMENT LLC $9,726,174 0.24% 303,848
Mid Eversept Partners, LP $9,147,305 0.23% 285,764
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $9,131,972 0.23% 285,285
Mid Affinity Asset Advisors, LLC $8,802,750 0.22% 275,000
Large SEB Asset Management AB $8,727,654 0.22% 272,654
Mega FIRST TRUST ADVISORS LP $8,550,031 0.21% 267,105
Large MARSHALL WACE, LLP $8,476,311 0.21% 264,802
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $8,354,610 0.21% 261,000
Mid ArrowMark Colorado Holdings LLC $8,307,363 0.21% 259,524
Large Ensign Peak Advisors, Inc $7,976,571 0.20% 249,190
Mid GILDER GAGNON HOWE & CO LLC $7,729,614 0.19% 241,475
Large LORD, ABBETT & CO. LLC $6,253,313 0.16% 195,355
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $5,973,066 0.15% 186,600
Small STEMPOINT CAPITAL LP $5,782,862 0.15% 180,658
Mid PEREGRINE CAPITAL MANAGEMENT LLC $5,713,560 0.14% 178,493
Mega VICTORY CAPITAL MANAGEMENT INC $5,526,942 0.14% 172,663
Mega JANE STREET GROUP, LLC $5,288,083 0.13% 165,201
Small DCF Advisers, LLC $5,140,806 0.13% 160,600
Mid XTX Topco Ltd $4,633,735 0.12% 144,759
Large LMR Partners LLP $4,366,164 0.11% 136,400
Mid Nicholas Investment Partners, LP $4,005,603 0.10% 125,136
Mega DEUTSCHE BANK AG\ Bank $3,994,047 0.10% 124,775
Mid ADAR1 Capital Management, LLC $3,797,122 0.10% 118,623
Small Moody Aldrich Partners LLC $3,680,349 0.09% 114,975
Mega GEODE CAPITAL MANAGEMENT, LLC $3,341,715 0.08% 104,396
Large Swedbank AB Bank $3,229,809 0.08% 100,900
Small Atle Fund Management AB $3,034,419 0.08% 94,796
Large ALPS ADVISORS INC $2,996,007 0.08% 93,596
Mega Swiss National Bank Bank $2,845,689 0.07% 88,900
Large Russell Investments Group, Ltd. $2,701,162 0.07% 84,385
Small Catalio Capital Management, LP $2,674,563 0.07% 83,554
Large Caption Management, LLC $2,400,750 0.06% 75,000
Mega STATE STREET CORP $2,019,510 0.05% 63,090
Large Walleye Capital LLC $1,870,472 0.05% 58,434
Large SEI INVESTMENTS CO $1,780,939 0.04% 55,637
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $1,739,071 0.04% 54,329
Large FRED ALGER MANAGEMENT, LLC $1,734,781 0.04% 54,195
Mid Mizuho Markets Cayman LP $1,671,786 0.04% 52,227
Mega DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main Bank $1,502,421 0.04% 46,936
Mid China Universal Asset Management Co., Ltd. $1,398,933 0.04% 43,703
Large Squarepoint Ops LLC $1,377,102 0.03% 43,021
Mega JANE STREET GROUP, LLC $1,312,410 0.03% 41,000
Mega BNP PARIBAS ARBITRAGE, SA $1,198,774 0.03% 37,450
Small Ishara Investments LP $1,181,169 0.03% 36,900
Mid Knights of Columbus Asset Advisors LLC $1,158,441 0.03% 36,190
Mega Legal & General Group Plc $1,071,566 0.03% 33,476
Mega NORTHERN TRUST CORP Bank $1,031,297 0.03% 32,218
Mega CITADEL ADVISORS LLC $973,104 0.02% 30,400
Large STIFEL FINANCIAL CORP $935,363 0.02% 29,221
Mega VANGUARD ASSET MANAGEMENT, Ltd $900,953 0.02% 28,146
Small Headlands Technologies LLC $885,908 0.02% 27,676
Mid Bellevue Group AG $885,428 0.02% 27,661
Mid BOOTHBAY FUND MANAGEMENT, LLC $875,025 0.02% 27,336
Small Eleva Capital SAS $871,684 0.02% 25,721
Large VOYA INVESTMENT MANAGEMENT LLC $865,870 0.02% 27,050
Key facts CIK 1936258 CUSIP N62509109 13F (30d) 4 filings 3 filers Visit website Investor relations

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