Skip to content
Disclosery

NAMS NEWAMSTERDAM PHARMA COMPANY

Follow

COMMON STOCK (common), issuer CIK 1936258

186 managers (188 13F filers) reported a position in NAMS shares at 2025-12-31, 119,332,944 shares in all. 51 filers opened a position and 9 filers sold out during the quarter.

Managers
186
13F filers
188
New
51
Added
53
Reduced
51
Sold out
9
Shares held by filers
119,332,944

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Frazier Life Sciences Management, L.P.16,943,774$594M15.96%+241,81813F-HRTimeline
Capital World Investors9,984,000$350M0.05%+161,28913F-HRTimeline
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.9,550,191$335M3.43%-588,74713F-HRTimelineGroup
FCPM III SERVICES B.V.in group FCPM III SERVICES B.V.9,198,900$323M42.3%-13,48413F-HRTimelineGroup
Bain Capital Life Sciences Investors, L…in group Bain Capital Life Sciences In…7,306,566$256M19.63%-3,412,54413F-HRTimelineGroup
FMR LLCin group FMR LLC6,412,984$225M0.01%+877,69113F-HRTimelineGroup
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…5,033,175$177M0.03%+1,013,04913F-HRTimelineGroup
VIKING GLOBAL INVESTORS LPin group VIKING GLOBAL INVESTORS LP4,203,567$147M0.39%-2,271,96713F-HRTimelineGroup
DEERFIELD MANAGEMENT COMPANY, L.P.in group DEERFIELD MANAGEMENT COMPANY,…4,164,789$146M1.87%-101,90413F-HRTimelineGroup
JENNISON ASSOCIATES LLC3,489,221$122M0.07%-709,33313F-HRTimeline
Duquesne Family Office LLC3,070,146$108M2.55%+1,146,44613F-HRTimeline
Medicxi Ventures Management (Jersey) Ltd2,869,565$101M12.06%013F-HRTimeline
Polar Capital Holdings Plcin group Polar Capital Holdings Plc2,776,222$97.4M0.45%-135,41213F-HRTimelineGroup
JANUS HENDERSON GROUP PLCin group Janus Henderson2,341,723$82.3M0.04%+224,64813F-HRTimelineGroup
Capital International Investorsin group Capital International Investo…2,062,535$72.4M0.01%013F-HRTimelineGroup
MAVERICK CAPITAL LTD1,894,226$66.4M0.71%+389,47913F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC1,725,662$60.5M0.01%+845,11013F-HR/ATimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…1,406,631$49.3M0.07%-1,170,00013F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.1,300,875$45.6M0.01%-840,90313F-HRTimeline
UBS Group AGgroup of 2 filers holding1,164,641$40.9M+396,121Timeline
Castle Hook Partners LP1,085,008$38.1M0.55%new13F-HRTimeline
Cormorant Asset Management, LP1,000,000$35.1M1.99%-1,175,00013F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO999,976$35.1M<0.01%-302,52213F-HRTimelineGroup
First Turn Management, LLC893,473$31.3M3.58%+176,50213F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.849,779$29.8M<0.01%+227,26413F-HRTimelineGroup
TimesSquare Capital Management, LLC822,300$28.8M0.43%-15,06813F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources769,120$27M0.01%+363,29513F-HRTimelineGroup
Woodline Partners LP751,270$26.4M0.1%-406,59713F-HRTimeline
Pictet Asset Management Holding SAin group Pictet Asset Management Holdi…746,122$26.2M0.03%-546,02813F-HRTimelineGroup
Aberdeen Group plcin group Aberdeen Group plc729,484$25.6M0.04%+67,53813F-HRTimelineGroup
NWI MANAGEMENT LP702,000$24.6M1.51%new13F-HR/ATimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC635,247$22.3M0.02%+428,78613F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC603,401$21.2M0.01%-20,88413F-HRTimelineGroup
Decheng Capital LLC592,057$20.8M2.79%-64,99413F-HRTimeline
Rock Springs Capital Management LP557,194$19.5M1%-38,73513F-HRTimeline
Ensign Peak Advisors, Inc549,511$19.3M0.03%new13F-HR/ATimeline
MORGAN STANLEYin group MORGAN STANLEY532,803$18.7M<0.01%-964,67613F-HR/ATimelineGroup
Artia Global Partners LP503,936$17.7M2.84%+309,09813F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/459,391$16.1M<0.01%-12,70913F-HRTimelineGroup
Logos Global Management LP450,000$15.8M1.05%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC421,491$14.8M0.02%new13F-HRTimelineGroup
Eversept Partners, LP420,827$14.8M0.83%-67,76513F-HRTimeline
Handelsbanken Fonder AB415,800$14.6M0.04%+10,00013F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp391,827$13.7M<0.01%+58,82913F-HRTimelineGroup
Slate Path Capital LP319,000$11.2M0.15%013F-HRTimeline
ArrowMark Colorado Holdings LLC298,077$10.5M0.23%-12,92213F-HRTimeline
FIRST TRUST ADVISORS LPin group FIRST TRUST ADVISORS LP279,701$9.81M0.01%new13F-HRTimelineGroup
Affinity Asset Advisors, LLC275,000$9.65M0.69%013F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC254,596$8.93M0.01%new13F-HRTimelineGroup
GILDER GAGNON HOWE & CO LLC248,528$8.72M0.09%+212,14413F-HRTimeline
Nicholas Investment Partners, LP213,419$7.49M0.55%+35,88113F-HRTimeline
LORD, ABBETT & CO. LLC200,638$7.04M0.02%new13F-HRTimeline
Atle Fund Management AB197,036$6.91M2.21%+3,41113F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…195,635$6.86M0.01%+43,79813F-HRTimelineGroup
Lisanti Capital Growth, LLC179,410$6.29M1.49%+131,96513F-HRTimeline
BNP PARIBAS ASSET MANAGEMENT Holding S.…in group BNP PARIBAS ASSET MANAGEMENT …177,016$6.21M0.01%new13F-HRTimelineGroup
VANGUARD GROUP INCin group VANGUARD GROUP INC172,956$6.07M<0.01%+49013F-HRTimelineGroup
KENNEDY CAPITAL MANAGEMENT LLC172,931$6.07M0.13%+26,21613F-HRTimeline
DCF Advisers, LLC160,600$5.63M1.86%-14,65013F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC152,269$5.34M<0.01%+6,94213F-HRTimelineGroup
Moody Aldrich Partners LLC143,549$5.04M0.94%new13F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd137,492$4.82M0.13%+129,91313F-HRTimelineGroup
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\123,963$4.35M<0.01%+55,53813F-HRTimelineGroup
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC118,623$4.16M0.31%+4,26413F-HR/ATimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/116,258$4.08M<0.01%-22,07113F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC102,395$3.59M<0.01%+43713F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC96,261$3.38M0.02%new13F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC92,902$3.26M0.02%new13F-HRTimelineGroup
Swedbank ABin group Swedbank AB90,900$3.19M<0.01%new13F-HR/ATimelineGroup
Swiss National Bank88,900$3.12M<0.01%+1,80013F-HRTimeline
JTC Employer Solutions Trustee Ltd75,500$3.02M0.2%new13F-HRTimeline
Legato Capital Management LLC83,833$2.94M0.25%+60,46313F-HRTimeline
Centiva Capital, LP80,000$2.81M0.17%new13F-HRTimeline
STEMPOINT CAPITAL LP73,106$2.56M0.44%-77,46713F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…71,282$2.5M<0.01%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP68,523$2.4M<0.01%+4,71313F-HRTimelineGroup
DZ BANK AG Deutsche Zentral Genossensch…in group DZ BANK AG Deutsche Zentral G…63,302$2.22M<0.01%new13F-HRTimelineGroup
Lifetime Wealth Management P.C.59,250$2.08M1.31%13F-HR/ATimeline
Mizuho Markets Cayman LPin group MIZUHO FINANCIAL GROUP INC47,879$1.68M0.08%new13F-HRTimelineGroup
Jain Global LLC47,584$1.67M0.02%new13F-HRTimeline
FRED ALGER MANAGEMENT, LLCin group FRED ALGER MANAGEMENT, LLC47,535$1.67M0.01%+6,27113F-HRTimelineGroup
Aquatic Capital Management LLC45,989$1.61M0.05%new13F-HRTimeline
Ikarian Capital, LLCin group Ikarian Capital, LLC45,830$1.61M0.21%-60,97013F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO41,040$1.44M<0.01%new13F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc40,951$1.44M<0.01%-4,78713F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…40,276$1.41M<0.01%-7,58613F-HRTimeline
Bellevue Group AGin group Bellevue Group AG36,336$1.27M0.02%+21,72513F-HRTimelineGroup
HighVista Strategies LLC35,586$1.25M0.32%+3,75513F-HRTimeline
BOOTHBAY FUND MANAGEMENT, LLC33,919$1.19M0.03%-6,79513F-HRTimeline
Knights of Columbus Asset Advisors LLC32,483$1.14M0.06%-1,12713F-HRTimeline
Verition Fund Management LLC32,391$1.14M0.01%+18,56313F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP32,137$1.13M<0.01%-1,16213F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC30,819$1.08M<0.01%+9,86013F-HRTimelineGroup
Ishara Investments LP30,000$1.05M1.22%13F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC28,875$1.01M<0.01%+9,57513F-HRTimelineGroup
WINTON GROUP Ltdin group WINTON GROUP Ltd28,665$1.01M0.03%new13F-HRTimelineGroup
TWINBEECH CAPITAL LP27,400$961K0.07%new13F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND26,680$936K<0.01%013F-HRTimeline
China Universal Asset Management Co., L…26,477$929K0.07%+6,73513F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS25,134$882K<0.01%-2,19413F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA24,084$846K<0.01%-2,41813F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding24,080$845K-6,210Timeline
Yarbrough Capital, LLC23,960$841K0.03%013F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …22,698$792K<0.01%+19313F-HRTimelineGroup
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA22,215$779K<0.01%13F-HRTimelineGroup
PEAK6 LLCin group PEAK6 LLC20,749$728K0.02%new13F-HR/ATimelineGroup
Holocene Advisors, LP20,459$718K<0.01%new13F-HRTimeline
DNB Asset Management ASin group DNB Asset Management AS20,119$706K<0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD19,997$701K<0.01%new13F-HRTimeline
Zurcher Kantonalbank (Zurich Cantonalba…19,804$695K<0.01%+12,40013F-HRTimeline
ENVESTNET ASSET MANAGEMENT INCin group ENVESTNET ASSET MANAGEMENT INC17,572$616K<0.01%new13F-HRTimelineGroup
Creative Planningin group Creative Planning15,637$549K<0.01%new13F-HRTimelineGroup
State of New Jersey Common Pension Fund…in group State of New Jersey Common Pe…15,377$539K<0.01%new13F-HRTimelineGroup
PSP Research LLC14,920$523K0.46%13F-HRTimeline
SBI Okasan Asset Management Co.Ltd.14,900$522K0.03%13F-HRTimeline
AlphaCentric Advisors LLC13,731$482K0.48%13F-HRTimeline
TD Asset Management Inc13,180$462K<0.01%-4,82013F-HRTimeline
KEYBANK NATIONAL ASSOCIATION/OHin group KEYBANK NATIONAL ASSOCIATION/…13,099$460K<0.01%-2,91513F-HRTimelineGroup
ARIZONA STATE RETIREMENT SYSTEM12,733$447K<0.01%-51813F-HRTimeline
PTM WEALTH MANAGEMENT, LLC12,900$432K0.24%013F-HRTimeline
CenterBook Partners LP12,060$423K0.02%-58,55313F-HRTimeline
Jefferies Financial Group Inc.in group Jefferies Financial Group Inc.12,000$421K<0.01%013F-HRTimelineGroup
LETKO, BROSSEAU & ASSOCIATES INC11,775$413K0.01%013F-HRTimeline
POLEN CAPITAL MANAGEMENT LLC11,239$394K<0.01%new13F-HRTimeline
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC10,282$361K<0.01%+8613F-HRTimelineGroup
FOX RUN MANAGEMENT, L.L.C.9,798$344K0.05%new13F-HRTimeline
Caption Management, LLC9,528$334K0.01%new13F-HRTimeline
Jaffetilchin Investment Partners, LLC9,218$323K0.02%new13F-HRTimeline
KLP KAPITALFORVALTNING AS9,100$319K<0.01%013F-HRTimeline
Mesirow Financial Investment Management…8,215$288K0.01%013F-HRTimeline
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.7,240$254K<0.01%-40013F-HRTimelineGroup
VIRGINIA RETIREMENT SYSTEMS ET Al7,200$253K<0.01%new13F-HRTimeline
Virtus Investment Advisers, LLCin group Virtus Investment Advisers, L…7,142$251K0.07%+1,73113F-HRTimelineGroup
TEACHER RETIREMENT SYSTEM OF TEXAS6,687$235K<0.01%-4,09613F-HRTimeline
Allianz Asset Management GmbHin group Allianz SE6,600$232K<0.01%new13F-HRTimelineGroup
Avanza Fonder AB6,566$230K0.01%-93913F-HRTimeline
Orion Porfolio Solutions, LLC6,545$230K<0.01%new13F-HRTimeline
GUGGENHEIM CAPITAL LLCin group GUGGENHEIM CAPITAL LLC6,388$224K<0.01%new13F-HRTimelineGroup
Invesco Ltd.in group Invesco Ltd.5,961$209K<0.01%-98,71513F-HRTimelineGroup
SIMON QUICK ADVISORS, LLC5,763$202K0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC5,652$198K<0.01%-6613F-HRTimelineGroup
Seven Fleet Capital Management LP4,000$140K0.09%13F-HR/ATimeline
Persistent Asset Partners Ltd3,948$138K0.07%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC3,698$130K<0.01%-1,40413F-HRTimelineGroup
Quantbot Technologies LP3,692$130K<0.01%new13F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…3,682$129K<0.01%+6613F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\3,419$120K<0.01%+3,28413F-HRTimelineGroup
Quarry LP3,000$105K0.02%-3,87513F-HRTimeline
LANARK FINANCIAL, INC.2,457$86.2K0.01%new13F-HRTimeline
GF FUND MANAGEMENT CO. LTD.2,228$78.2K<0.01%-19513F-HRTimeline
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/2,017$70.8K<0.01%+6813F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC2,012$70.6K<0.01%-41713F-HRTimelineGroup
Parallel Advisors, LLC1,400$49.1K<0.01%013F-HRTimeline
Navalign, LLC1,315$46.1K0.01%new13F-HRTimeline
GROUP ONE TRADING LLC1,313$46.1K<0.01%+21613F-HRTimeline
THURSTON, SPRINGER, MILLER, HERD & TITA…1,067$37.4K0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC981$34K<0.01%+213F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…943$33.1K<0.01%-2,02913F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN900$31.6K<0.01%+30013F-HRTimelineGroup
Farther Finance Advisors, LLC724$25.4K<0.01%+70813F-HRTimeline
Cheviot Value Management, LLC796$25.4K<0.01%013F-HRTimeline
SIGNATUREFD, LLC647$22.7K<0.01%013F-HRTimeline
State of Wyoming601$21.1K<0.01%+2113F-HRTimeline
Roxbury Financial LLC443$15.5K0.01%+11913F-HRTimeline
Daiwa Securities Group Inc.in group Daiwa Securities Group Inc.335$12K<0.01%-4013F-HRTimelineGroup
Stone House Investment Management, LLC325$11.4K<0.01%013F-HRTimeline
Strategic Wealth Partners, Ltd.325$11.4K<0.01%-65013F-HRTimeline
Global Retirement Partners, LLC270$9.47K<0.01%new13F-HRTimeline
Greenline Wealth Management LLC233$8.16K0.01%13F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP199$6.98K<0.01%-5013F-HRTimelineGroup
EASTERN BANK187$6.56K<0.01%new13F-HRTimeline
Basecamp Wealth Advisors LLC99$3.47K<0.01%13F-HRTimeline
SJS Investment Consulting Inc.85$2.98K<0.01%new13F-HRTimeline
ORG Partners LLC60$2.1K<0.01%new13F-HRTimeline
Rachor Investment Advisory Services, LLC28$983<0.01%13F-HRTimeline
Caitong International Asset Management …23$807<0.01%new13F-HR/ATimeline
True Wealth Design, LLC21$737<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.10$351<0.01%new13F-HRTimelineGroup
GAMMA Investing LLC10$351<0.01%new13F-HRTimeline
Kilter Group LLC9$316<0.01%-113F-HRTimeline
Sunbelt Securities, Inc.8$281<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…8$281<0.01%013F-HRTimelineGroup
IFP Advisors, Inc3$105<0.01%013F-HRTimeline
Essential Partners LLC2$70<0.01%013F-HRTimeline
DUPONT CAPITAL MANAGEMENT CORP1$35<0.01%013F-HRTimeline
NOMURA ASSET MANAGEMENT CO LTDin group NOMURA ASSET MANAGEMENT CO LTD0$00%013F-HRTimelineGroupValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.