NEWAMSTERDAM PHARMA COMPANY (NAMS)
Institutional ownership reported to the SEC as of Q2 2026, across 15 quarters.
194
Reporting holders
$4.0B
Reported value
97.3%
Of shares outstanding
2.4%
Held as options
+24
Holder change
Institutions report 116,288,034 shares against 119,537,169 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. A figure this high can overstate: where an adviser and a sub-adviser both report the same shares, both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | $613.0M | 18,088,902 | 13.35% | 15q | +6.8%+$38.8M |
| Capital World Investors | $414.5M | 12,230,557 | 0.05% | 7q | +10.1%+$38.0M |
| FMR LLC | $350.4M | 10,339,663 | 0.02% | 10q | +18.0%+$53.3M |
| RA CAPITAL MANAGEMENT, L.P. | $323.7M | 9,550,191 | 2.81% | 15q | HELD |
| FCPM III SERVICES B.V. | $287.7M | 8,490,353 | 38.34% | 11q | -7.7%-$24.0M |
| DEERFIELD MANAGEMENT COMPANY, L.P. | $144.5M | 4,264,789 | 1.51% | 10q | HELD |
| VIKING GLOBAL INVESTORS LP | $142.5M | 4,203,567 | 0.41% | 15q | HELD |
| Bain Capital Life Sciences Investors, LLC | $129.0M | 3,806,566 | 7.67% | 15q | -47.9%-$118.6M |
| MAVERICK CAPITAL LTD | $110.7M | 3,267,802 | 0.98% | 7q | +49.5%+$36.6M |
| Jupiter Topco LLC | $86.0M | 2,535,682 | 0.04% | new | FIRST |
| Medicxi Ventures Management (Jersey) Ltd | $74.9M | 2,208,639 | 42.19% | 15q | -17.4%-$15.8M |
| JENNISON ASSOCIATES LLC | $71.2M | 2,102,286 | 0.04% | 10q | -23.6%-$22.0M |
| Orbis Allan Gray Ltd | $59.2M | 1,747,627 | 0.20% | new | NEW |
| Polar Capital Holdings Plc | $58.4M | 1,724,518 | 0.14% | 11q | -39.1%-$37.5M |
| Capital International Investors | $58.4M | 1,723,495 | 0.01% | 7q | +19.6%+$9.6M |
| GOLDMAN SACHS GROUP INC | $52.9M | 1,544,911 | 0.00% | 11q | -20.6%-$13.8M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $52.1M | 1,536,472 | 0.17% | 2q | -30.3%-$22.6M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $49.8M | 754,327 | 0.00% | 7q | +4131.8%+$48.7M |
| Castle Hook Partners LP | $46.5M | 1,371,005 | 0.21% | 3q | +31.5%+$11.1M |
| AMERIPRISE FINANCIAL INC | $42.5M | 1,253,549 | 0.01% | 6q | -16.8%-$8.6M |
| ALLIANCEBERNSTEIN L.P. | $40.3M | 1,259,940 | 0.01% | 7q | +5.1%+$1.9M |
| JPMORGAN CHASE & CO | $38.4M | 1,132,955 | 0.00% | 10q | +28.1%+$8.4M |
| Aberdeen Group plc | $37.4M | 1,102,785 | 0.05% | 9q | +31.8%+$9.0M |
| BlackRock, Inc. | $36.1M | 1,063,750 | 0.00% | 8q | +20.0%+$6.0M |
| FRANKLIN RESOURCES INC | $33.7M | 993,917 | 0.01% | 6q | +29.1%+$7.6M |
| TimesSquare Capital Management, LLC | $27.0M | 796,162 | 0.40% | 10q | +5.9%+$1.5M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $26.5M | 781,140 | 0.03% | 3q | -18.4%-$6.0M |
| Woodline Partners LP | $25.5M | 752,489 | 0.08% | 9q | HELD |
| BANK OF AMERICA CORP /DE/ | $24.9M | 735,483 | 0.00% | 10q | -13.2%-$3.8M |
| Jefferies Financial Group Inc. | $24.5M | 122,728 | 0.16% | new | NEW |
| AMERICAN CENTURY COMPANIES INC | $23.2M | 684,813 | 0.01% | 7q | +31.8%+$5.6M |
| CITADEL ADVISORS LLC | $23.2M | 645,805 | 0.00% | 12q | -9.3%-$2.4M |
| Rock Springs Capital Management LP | $19.7M | 582,744 | 0.96% | 8q | -1.0%-$205.0K |
| First Turn Management, LLC | $19.7M | 582,497 | 2.11% | 5q | +4.3%+$818.8K |
| MORGAN STANLEY | $19.5M | 575,825 | 0.00% | 14q | +3.6%+$680.0K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $18.6M | 550,000 | 0.03% | 13q | -50.3%-$18.9M |
| Artia Global Partners LP | $17.1M | 503,936 | 3.15% | 5q | HELD |
| MILLENNIUM MANAGEMENT LLC | $17.0M | 501,614 | 0.01% | 3q | +65.1%+$6.7M |
| PERCEPTIVE ADVISORS LLC | $16.9M | options only | 0.25% | new | OPTIONS |
| Cormorant Asset Management, LP | $16.9M | 500,000 | 0.87% | 10q | -47.4%-$15.3M |
| JANE STREET GROUP, LLC | $16.7M | 474,236 | 0.00% | 8q | +187.1%+$10.9M |
| KENNEDY CAPITAL MANAGEMENT LLC | $14.3M | 421,374 | 0.25% | 5q | +3.2%+$436.6K |
| Ikarian Capital, LLC | $13.6M | options only | 1.46% | new | OPTIONS |
| Bank of New York Mellon Corp | $12.0M | 353,298 | 0.00% | 5q | -6.7%-$864.3K |
| UBS Group AG | $11.7M | 344,065 | 0.00% | 11q | -56.7%-$15.3M |
| Slate Path Capital LP | $10.8M | 319,000 | 0.15% | 7q | HELD |
| ExodusPoint Capital Management, LP | $10.3M | 304,334 | 0.07% | new | NEW |
| Eversept Partners, LP | $9.3M | 275,471 | 0.48% | 14q | -3.6%-$348.8K |
| Affinity Asset Advisors, LLC | $9.3M | 275,000 | 0.42% | 13q | HELD |
| SEB Asset Management AB | $9.2M | 272,654 | 0.03% | 2q | HELD |
| Atle Fund Management AB | $8.4M | 248,848 | 2.27% | 10q | +162.5%+$5.2M |
| LMR Partners LLP | $8.4M | options only | 0.03% | 2q | OPTIONS |
| GILDER GAGNON HOWE & CO LLC | $7.6M | 224,070 | 0.08% | 4q | -7.2%-$589.9K |
| WELLINGTON MANAGEMENT GROUP LLP | $7.4M | 218,749 | 0.00% | 10q | -95.7%-$166.0M |
| Ensign Peak Advisors, Inc | $7.2M | 212,423 | 0.01% | 3q | -57.4%-$9.7M |
| ArrowMark Colorado Holdings LLC | $7.2M | 211,843 | 0.30% | 10q | -18.4%-$1.6M |
| Point72 Asset Management, L.P. | $7.0M | 168,901 | 0.01% | 2q | HELD |
| DEUTSCHE BANK AG\ | $6.8M | 199,931 | 0.00% | 8q | +60.2%+$2.5M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $6.2M | 181,674 | 0.00% | 2q | +34.5%+$1.6M |
| Decheng Capital LLC | $6.0M | 176,887 | 0.82% | 9q | -45.6%-$5.0M |
| VICTORY CAPITAL MANAGEMENT INC | $5.9M | 172,663 | 0.00% | 2q | HELD |
| PEREGRINE CAPITAL MANAGEMENT LLC | $5.7M | 169,488 | 0.19% | 2q | -5.0%-$305.2K |
| BOOTHBAY FUND MANAGEMENT, LLC | $5.3M | 35,756 | 0.07% | 7q | +30.8%+$1.3M |
| Mizuho Markets Cayman LP | $5.1M | 150,539 | 0.19% | 3q | +188.2%+$3.3M |
| TD Asset Management Inc | $5.0M | 148,400 | 0.00% | new | NEW |
| XTX Topco Ltd | $4.9M | 145,008 | 0.06% | 4q | HELD |
| Jump Financial, LLC | $4.9M | 144,512 | 0.04% | new | NEW |
| DCF Advisers, LLC | $4.8M | 141,000 | 0.84% | 8q | -12.2%-$664.2K |
| KORNITZER CAPITAL MANAGEMENT INC /KS | $4.7M | 139,933 | 0.10% | new | NEW |
| Palo Alto Investors LP | $4.5M | 133,077 | 0.21% | new | NEW |
| Swiss National Bank | $4.1M | 121,100 | 0.00% | 9q | +36.2%+$1.1M |
| D. E. Shaw & Co., Inc. | $4.1M | 120,561 | 0.00% | new | NEW |
| ADAR1 Capital Management, LLC | $4.0M | 118,623 | 0.18% | 5q | HELD |
| ALPS ADVISORS INC | $4.0M | 118,145 | 0.02% | 3q | +26.2%+$832.0K |
| STATE STREET CORP | $3.9M | 115,215 | 0.00% | 9q | +82.6%+$1.8M |
| Walleye Capital LLC | $3.8M | 111,819 | 0.01% | 3q | +91.4%+$1.8M |
| Caption Management, LLC | $3.8M | options only | 0.02% | 7q | OPTIONS |
| GEODE CAPITAL MANAGEMENT, LLC | $3.6M | 105,169 | 0.00% | 14q | +0.7%+$26.2K |
| Swedbank AB | $3.5M | 104,100 | 0.00% | 3q | +3.2%+$108.4K |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $3.3M | 96,232 | 0.00% | 7q | +751.5%+$2.9M |
| NORTHERN TRUST CORP | $3.2M | 93,971 | 0.00% | 7q | +191.7%+$2.1M |
| Squarepoint Ops LLC | $3.1M | 92,026 | 0.00% | 5q | +113.9%+$1.7M |
| Moody Aldrich Partners LLC | $3.1M | 90,617 | 0.55% | 3q | -21.2%-$825.5K |
| Schonfeld Strategic Advisors LLC | $3.0M | 89,765 | 0.01% | new | NEW |
| Bellevue Group AG | $2.9M | 86,994 | 0.06% | 8q | +214.5%+$2.0M |
| ALGERT GLOBAL LLC | $2.8M | 81,340 | 0.03% | new | NEW |
| Man Group plc | $2.7M | 80,832 | 0.00% | new | NEW |
| TUDOR INVESTMENT CORP ET AL | $2.7M | 79,460 | 0.00% | new | NEW |
| Y-Intercept (Hong Kong) Ltd | $2.6M | 78,136 | 0.05% | new | NEW |
| STEMPOINT CAPITAL LP | $2.6M | 77,589 | 0.45% | 6q | -78.5%-$9.6M |
| Headlands Technologies LLC | $2.5M | 72,335 | 0.26% | 2q | +161.4%+$1.5M |
| Pavaki Capital Management LLC | $2.3M | 66,600 | 0.79% | 2q | +82.0%+$1.0M |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | $2.1M | 63,298 | 0.00% | 3q | +34.9%+$554.5K |
| FOX RUN MANAGEMENT, L.L.C. | $2.0M | 59,477 | 0.33% | new | NEW |
| Russell Investments Group, Ltd. | $2.0M | 58,707 | 0.00% | 3q | -30.4%-$870.2K |
| China Universal Asset Management Co., Ltd. | $1.6M | 48,605 | 0.10% | 7q | +11.2%+$166.1K |
| Qube Research & Technologies Ltd | $1.6M | 47,090 | 0.00% | new | NEW |
| SIMPLEX TRADING, LLC | $1.5M | options only | 0.00% | 9q | OPTIONS |
| FRED ALGER MANAGEMENT, LLC | $1.5M | 45,115 | 0.01% | 7q | -16.8%-$307.7K |
| Knights of Columbus Asset Advisors LLC | $1.5M | 43,800 | 0.07% | 5q | +21.0%+$257.9K |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-06 | 13G/A | FMR LLCwith 1 co-filers | 8.8% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 194 | $4.0B | 116,288,034 | 44 | 65 | 50 | 2.4% |
| Q1 2026 | 170 | $3.9B | 120,453,506 | 22 | 64 | 48 | 0.7% |
| Q4 2025 | 179 | $4.1B | 115,144,431 | 49 | 48 | 48 | 0.6% |
| Q3 2025 | 135 | $3.5B | 119,414,158 | 20 | 43 | 40 | 2.1% |
| Q2 2025 | 127 | $2.1B | 115,197,893 | 25 | 52 | 29 | 0.2% |
| Q1 2025 | 120 | $2.3B | 109,994,160 | 24 | 45 | 31 | 0.7% |
| Q4 2024 | 126 | $2.5B | 98,041,735 | 41 | 40 | 30 | 0.7% |
| Q3 2024 | 98 | $1.3B | 76,721,069 | 18 | 41 | 16 | 0.1% |
| Q2 2024 | 88 | $1.4B | 72,215,278 | 22 | 29 | 15 | 0.0% |
| Q1 2024 | 74 | $1.7B | 72,282,220 | 42 | 13 | 10 | 0.0% |
| Q4 2023 | 33 | $708.2M | 62,202,046 | 4 | 10 | 5 | 1.9% |
| Q3 2023 | 33 | $466.6M | 50,158,187 | 8 | 9 | 6 | 0.6% |
| Q2 2023 | 28 | $584.1M | 48,833,493 | 9 | 13 | 1 | 0.6% |
| Q1 2023 | 18 | $337.9M | 24,991,263 | 7 | 4 | 1 | 1.1% |
| Q4 2022 | 11 | $271.8M | 25,215,646 | 11 | 0 | 0 | 0.0% |