NAMS · NewAmsterdam Pharma Co N.V. · Shareholders & Ownership
Market Cap
$2.45B
Shares
119.54M
Volume · Oct 20
1.08M
Avg daily vol (3M)
1.4M
Every disclosed holder of NAMS in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.
Who Owns NAMS
13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positionsNo chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.
| Holder group | Shares | % Out |
|---|---|---|
| Institutional (13F) | 123,187,078 | 103.05% |
| Insiders (Forms 3, 4, 5) | 15,966,111 | 13.36% |
| 13D/G-only blocks | 4,668,889 | 3.91% |
| Remaining | 24,284,909 | -20.32% |
| Registered funds (N-PORT, not summed) | 1,301,006 | 1.09% |
Shares outstanding: 119,537,169, the issuer's latest cover-page count restated onto today's split basis.
Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.
13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.
Holders of NAMS
| # | Holder | Shares | As of | Notes |
|---|---|---|---|---|
| 1 |
Frazier Life Sciences Management, L.P.
13F
CIK 1892134 · Registered investment adviser · Jun 30, 2026
Classes NAMS, NAMSW, carried, not yet filed for the newest quarter
|
18,589,235 | ||
| 2 |
Capital World Investors
13F
CIK 1422849 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
12,230,557 | ||
| 3 |
|
10,656,172 | ||
| 4 |
FMR LLC
13F
CIK 315066 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
10,339,663 | ||
| 4.1 |
FMR LLC
13G
CIK 315066 · Holding company · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
|
10,339,663 | ||
| 5 |
RA CAPITAL MANAGEMENT, L.P.
13F
CIK 1346824 · Registered investment adviser · Jun 30, 2026
Classes NAMS, NAMSW, carried, not yet filed for the newest quarter
|
9,883,524 | ||
| 6 |
FCPM III SERVICES B.V.
13F
CIK 2013410 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
8,490,353 | ||
| 7 |
Frazier Life Sciences X, L.P.
13D
CIK 1790879 · Unknown · Sep 18, 2026
Item 4 purpose: not restated by this amendment, the earlier 13D's purpose stands
not summed
|
7,329,857 | ||
| 8 |
ForDyne B.V.
13D
CIK 1823747 · Unknown · Sep 26, 2025
|
4,668,889 | ||
| 9 |
DEERFIELD MANAGEMENT COMPANY, L.P.
13F
CIK 1009258 · Registered investment adviser · Jun 30, 2026
Classes NAMS, NAMSW, carried, not yet filed for the newest quarter
|
4,357,576 | ||
| 10 |
VIKING GLOBAL INVESTORS LP
13F
CIK 1103804 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
4,203,567 | ||
| 11 |
Bain Capital Life Sciences Investors, LLC
13F
CIK 1703031 · Unknown · Jun 30, 2026
Classes NAMS, NAMSW, carried, not yet filed for the newest quarter
|
3,906,565 | ||
| 12 |
|
3,801,000 | ||
| 13 |
MAVERICK CAPITAL LTD
13F
CIK 934639 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,267,802 | ||
| 14 |
Duquesne Family Office LLC
13F
CIK 1536411 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
3,070,146 | ||
| 15 |
Jupiter Topco LLC
13F
CIK 2146052 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,535,682 | ||
| 16 |
Medicxi Ventures Management (Jersey) Ltd
13F
CIK 1715579 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,208,639 | ||
| 17 |
JENNISON ASSOCIATES LLC
13F
CIK 53417 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
2,102,286 | ||
| 18 |
Orbis Allan Gray Ltd
13F
CIK 1663865 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,747,627 | ||
| 19 |
Polar Capital Holdings Plc
13F
CIK 1837309 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,724,518 | ||
| 20 |
Capital International Investors
13F
CIK 1562230 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,723,495 | ||
| 21 |
GOLDMAN SACHS GROUP INC
13F
CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,544,911 | ||
| 22 |
WESTFIELD CAPITAL MANAGEMENT CO LP
13F
CIK 1177719 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,536,472 | ||
| 23 |
Castle Hook Partners LP
13F
CIK 1687241 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,371,005 | ||
| 24 |
ALLIANCEBERNSTEIN L.P.
13F
CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,259,940 | ||
| 25 |
AMERIPRISE FINANCIAL INC
13F
CIK 820027 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,253,549 | ||
| 26 |
PRICE T ROWE ASSOCIATES INC /MD/
13F
CIK 80255 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,167,357 | ||
| 27 |
JPMORGAN CHASE & CO
13F
CIK 19617 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,132,955 | ||
| 28 |
Aberdeen Group plc
13F
CIK 1716774 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,102,785 | ||
| 29 |
|
1,078,638 | ||
| 30 |
BlackRock, Inc.
13F
CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
1,063,750 | ||
| 30.1 |
iShares ESG Aware MSCI USA Small-Cap ETF
Fund
S000061604 · Registered fund · May 31, 2026
iShares Trust, not summed
|
32,510 | ||
| 30.2 |
iShares MSCI World Small-Cap ETF
Fund
S000091430 · Registered fund · May 31, 2026
iShares Trust, not summed
|
2,543 | ||
| 31 |
FRANKLIN RESOURCES INC
13F
CIK 38777 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
993,917 | ||
| 32 |
TimesSquare Capital Management, LLC
13F
CIK 1313816 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
796,162 | ||
| 33 |
BNP PARIBAS ASSET MANAGEMENT Holding S.A.
13F
CIK 1520354 · Non-US institution · Jun 30, 2026
carried, not yet filed for the newest quarter
|
781,140 | ||
| 34 |
SUSQUEHANNA INTERNATIONAL GROUP, LLP
13F
CIK 1446194 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
754,327 | ||
| 35 |
Woodline Partners LP
13F
CIK 1784547 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
752,489 | ||
| 36 |
BANK OF AMERICA CORP /DE/
13F
CIK 70858 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
735,483 | ||
| 37 |
NWI MANAGEMENT LP
13F
CIK 1103887 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
702,000 | ||
| 38 |
AMERICAN CENTURY COMPANIES INC
13F
CIK 748054 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
684,813 | ||
| 38.1 |
Small Cap Growth Fund
Fund
S000006193 · Registered fund · Jul 31, 2026
American Century Mutual Funds, Inc., not summed
|
524,241 | ||
| 39 |
CITADEL ADVISORS LLC
13F
CIK 1423053 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
645,805 | ||
| 40 |
Rock Springs Capital Management LP
13F
CIK 1595725 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
582,744 | ||
| 41 |
First Turn Management, LLC
13F
CIK 1993440 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
582,497 | ||
| 42 |
MORGAN STANLEY
13F
CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
|
575,825 | ||
| 43 |
ADAGE CAPITAL PARTNERS GP, L.L.C.
13F
CIK 1165408 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
550,000 | ||
| 44 |
Affinity Asset Advisors, LLC
13F
CIK 1773195 · Registered investment adviser · Jun 30, 2026
Classes NAMS, NAMSW, carried, not yet filed for the newest quarter
|
520,000 | ||
| 45 |
Artia Global Partners LP
13F
CIK 1937964 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
503,936 | ||
| 46 |
MILLENNIUM MANAGEMENT LLC
13F
CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
501,614 | ||
| 47 |
Cormorant Asset Management, LP
13F
CIK 1583977 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
500,000 | ||
| 48 |
JANE STREET GROUP, LLC
13F
CIK 1595888 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
|
474,236 | ||
| 49 |
KENNEDY CAPITAL MANAGEMENT LLC
13F
CIK 884589 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
|
421,374 | ||
| 49.1 |
Kennedy Capital ESG SMID Cap Fund
Fund
S000063803 · Registered fund · Jun 30, 2026
INVESTMENT MANAGERS SERIES TRUST II, not summed
|
14,004 | ||
| 49.2 |
Kennedy Capital Small Cap Growth Fund
Fund
S000076117 · Registered fund · Jun 30, 2026
INVESTMENT MANAGERS SERIES TRUST II, not summed
|
110 | ||
| 50 |
Bank of New York Mellon Corp
13F
CIK 1390777 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
|
353,298 |
Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.
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