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NewAmsterdam Pharma (NAMS) Institutional Ownership

NewAmsterdam Pharma logo
$23.20 -0.96 (-3.97%)
Closing price 10/2/2026 04:00 PM Eastern
Extended Trading
$23.72 +0.53 (+2.26%)
As of 10/2/2026 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for NewAmsterdam Pharma (NASDAQ:NAMS)

Current
Institutional Ownership
Percentage
89.89%
Number of
Institutional Buyers
(last 12 months)
100
Total
Institutional Inflows
(last 12 months)
$507.01M
Number of
Institutional Sellers
(last 12 months)
53
Total
Institutional Outflows
(last 12 months)
$756.74M
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NAMS Institutional Buying and Selling by Quarter

NewAmsterdam Pharma Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Engineers Gate Manager LP19,529$662K0.0%N/A0.016%
9/9/2026Squarepoint Ops LLC92,026$3.12M0.0%+113.9%0.077%
9/8/2026Arizona State Retirement System16,656$564K0.0%+34.6%0.014%
8/23/2026Frazier Life Sciences Management L.P.18,088,902$613.03M13.3%+6.8%15.132%
8/19/2026Wellington Management Group LLP218,749$7.41M0.0%-95.7%0.183%
7/10/2026Handelsbanken Fonder AB122,400$4.15M0.0%-70.8%0.105%
5/26/2026Glenmede Trust Co. NA18,575$595K0.0%-16.4%0.016%
5/19/2026Bank of America Corp DE847,089$27.12M0.0%+84.4%0.725%
5/19/2026Stempoint Capital LP180,658$5.78M1.1%+147.1%0.155%
5/19/2026Janus Henderson Group PLC2,258,984$72.25M0.0%-3.5%1.932%
5/18/2026California State Teachers Retirement System54,329$1.74M0.0%+34.9%0.046%
5/18/2026Royal Bank of Canada11,314$362K0.0%-53.0%0.010%
5/18/2026Eversept Partners LP285,764$9.15M0.5%-32.1%0.244%
5/16/2026The Manufacturers Life Insurance Company11,302$362K0.0%-50.2%0.010%
5/16/2026Maverick Capital Ltd.2,186,402$69.99M0.8%+15.4%1.902%
5/14/2026Sei Investments Co.55,637$1.78M0.0%+35.6%0.048%
5/14/2026Walleye Capital LLC58,434$1.87M0.0%-39.3%0.051%
5/13/2026Mizuho Markets Cayman LP52,227$1.67M0.1%+9.1%0.045%
5/13/2026Decheng Capital LLC325,057$10.41M1.6%-45.1%0.283%
5/13/2026First Trust Advisors LP267,105$8.55M0.0%-4.5%0.232%
5/8/2026PNC Financial Services Group Inc.9,119$292K0.0%+147.7%0.008%
5/7/2026AlphaCentric Advisors LLC14,656$469K0.5%+6.7%0.013%
5/7/2026KBC Group NV1,171$37K0.0%N/A0.001%
5/7/2026SEB Asset Management AB272,654$8.73M0.0%N/A0.237%
5/6/2026Jennison Associates LLC2,750,403$88.04M0.1%-21.2%2.392%
5/5/2026Bank of New York Mellon Corp378,800$12.13M0.0%-3.3%0.329%
4/29/2026Swedbank AB100,900$3.23M0.0%+11.0%0.088%
4/25/2026Keybank National Association OH12,480$399K0.0%-4.7%0.011%
4/24/2026Peregrine Capital Management LLC178,493$5.71M0.2%N/A0.155%
4/22/2026Pictet Asset Management Holding SA6,533$209K0.0%-99.1%0.006%
4/22/2026Medicxi Ventures Management Jersey Ltd2,674,182$85.60M8.7%-6.8%2.326%
4/17/2026AdvisorNet Financial Inc2,565$82K0.0%N/A0.002%
2/26/2026Seven Fleet Capital Management LP4,000$140K0.1%N/A0.004%
2/19/2026Invesco Ltd.5,961$209K0.0%-94.3%0.005%
2/18/2026Empowered Funds LLC2,428$85K0.0%N/A0.002%
2/18/2026XTX Topco Ltd137,492$4.82M0.1%+1,714.1%0.121%
2/18/2026Ikarian Capital LLC45,830$1.61M0.1%-57.1%0.040%
2/18/2026Virtus Investment Advisers LLC7,142$251K0.1%+32.0%0.006%
2/18/2026Twinbeech Capital LP27,400$961K0.1%N/A0.024%
2/18/2026Millennium Management LLC254,596$8.93M0.0%N/A0.225%
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2/18/2026Ishara Investments LP30,000$1.05M1.2%N/A0.026%
2/18/2026Janus Henderson Group PLC2,341,723$82.30M0.0%+10.6%2.065%
2/18/2026Eversept Partners LP420,827$14.76M0.7%-13.9%0.371%
2/18/2026Castle Hook Partners LP1,085,008$38.06M0.2%N/A0.957%
2/18/2026Cormorant Asset Management LP1,000,000$35.08M1.6%-54.0%0.882%
2/18/2026Artia Global Partners LP503,936$17.68M2.4%+158.6%0.444%
2/18/2026Boothbay Fund Management LLC33,919$1.19M0.0%-16.7%0.030%
2/17/2026Guggenheim Capital LLC6,388$224K0.0%N/A0.006%
2/17/2026Logos Global Management LP450,000$15.79M1.0%N/A0.397%
2/17/2026Viking Global Investors LP4,203,567$147.46M0.4%-35.1%3.707%
2/17/2026ADAR1 Capital Management LLC118,623$4.16M0.3%+3.7%0.105%
2/17/2026Jain Global LLC47,584$1.67M0.0%N/A0.042%
2/17/2026RA Capital Management L.P.9,550,191$335.02M3.4%-5.8%8.422%
2/17/2026Bain Capital Life Sciences Investors LLC7,306,566$256.31M19.6%-31.8%6.444%
2/17/2026ArrowMark Colorado Holdings LLC298,077$10.46M0.2%-4.2%0.263%
2/17/2026Price T Rowe Associates Inc. MD116,258$4.08M0.0%-16.0%0.103%
2/17/2026Adage Capital Partners GP L.L.C.1,406,631$49.35M0.1%-45.4%1.241%
2/17/2026California State Teachers Retirement System40,276$1.41M0.0%-15.8%0.036%
2/17/2026Russell Investments Group Ltd.71,282$2.50M0.0%N/A0.063%
2/17/2026Fcpm Iii Services B.V.9,198,900$322.70M42.8%-0.1%8.113%
2/17/2026State of Wisconsin Investment Board19,997$701K0.0%N/A0.018%
2/17/2026Fred Alger Management LLC47,535$1.67M0.0%+15.2%0.042%
2/17/2026Royal Bank of Canada24,084$846K0.0%-9.1%0.021%
2/17/2026Persistent Asset Partners Ltd3,948$138K0.1%N/A0.003%
2/17/2026Polar Capital Holdings Plc2,776,222$97.39M0.4%-4.7%2.448%
2/16/2026Squarepoint Ops LLC30,819$1.08M0.0%+47.0%0.027%
2/16/2026Verition Fund Management LLC32,391$1.14M0.0%+134.2%0.029%
2/16/2026PEAK6 LLC20,749$728K0.0%N/A0.018%
2/16/2026Nicholas Investment Partners LP213,419$7.49M0.5%+20.2%0.188%
2/16/2026First Turn Management LLC893,473$31.34M3.6%+24.6%0.788%
2/16/2026Frazier Life Sciences Management L.P.16,943,774$594.39M16.0%+1.4%14.943%
2/16/2026Kennedy Capital Management LLC172,931$6.07M0.1%+17.9%0.153%
2/13/2026Maverick Capital Ltd.1,894,226$66.45M0.7%+25.9%1.671%
2/13/2026Walleye Capital LLC96,261$3.38M0.0%N/A0.085%
2/13/2026Quarry LP3,000$105K0.0%-56.4%0.003%
2/13/2026First Trust Advisors LP279,701$9.81M0.0%N/A0.247%
2/13/2026State Street Corp68,523$2.40M0.0%+7.4%0.060%
2/13/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC265,199$9.30M0.0%N/A0.234%
2/13/2026Wells Fargo & Company MN900$32K0.0%+50.0%0.001%
2/13/2026Lord Abbett & CO. LLC200,638$7.04M0.0%N/A0.177%
2/12/2026Orion Porfolio Solutions LLC6,545$230K0.0%N/A0.006%
2/12/2026Decheng Capital LLC592,057$20.77M2.8%-9.9%0.522%
2/12/2026Ensign Peak Advisors Inc549,511$19.28M0.0%N/A0.485%
2/12/2026AlphaCentric Advisors LLC13,731$482K0.5%N/A0.012%
2/12/2026CIBC Private Wealth Group LLC7,240$254K0.0%-5.2%0.006%
2/12/2026Alps Advisors Inc.92,902$3.26M0.0%N/A0.082%
2/12/2026Swiss National Bank88,900$3.12M0.0%+2.1%0.078%
2/12/2026Polen Capital Management LLC11,239$394K0.0%N/A0.010%
2/11/2026Empowered Funds LLC2,428$85K0.0%N/A0.002%
2/11/2026DCF Advisers LLC160,600$5.63M1.5%-8.4%0.142%
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2/11/2026Deutsche Bank AG123,963$4.35M0.0%+81.2%0.109%
2/11/2026Fox Run Management L.L.C.9,798$344K0.1%N/A0.009%
2/11/2026Franklin Resources Inc.769,120$26.98M0.0%+89.5%0.678%
2/11/2026CenterBook Partners LP12,060$423K0.0%-82.9%0.011%
2/11/2026JPMorgan Chase & Co.999,976$35.08M0.0%-23.2%0.882%
2/11/2026Capital World Investors9,984,000$350.24M0.0%+1.6%8.805%
2/11/2026WINTON GROUP Ltd28,665$1.01M0.0%N/A0.025%
2/10/2026TD Asset Management Inc13,180$462K0.0%-26.8%0.012%
2/10/2026Goldman Sachs Group Inc.1,725,662$60.54M0.0%+96.0%1.522%
2/10/2026JTC Employer Solutions Trustee Ltd75,500$2.65M0.2%N/A0.067%


NAMS Institutional Ownership - Frequently Asked Questions

During the previous two years, 187 institutional investors and hedge funds held shares of NewAmsterdam Pharma. The most heavily invested institutionals were Frazier Life Sciences Management L.P. ($613.03M), Capital World Investors ($350.24M), RA Capital Management L.P. ($335.02M), Fcpm Iii Services B.V. ($322.70M), Bain Capital Life Sciences Investors LLC ($256.31M), Viking Global Investors LP ($147.46M), and Deerfield Management Company L.P. ($121.35M).Learn more on NewAmsterdam Pharma's institutional investors.

89.89% of NewAmsterdam Pharma's stock is owned by institutional investors. Learn more on NAMS's institutional investor holdings.

Of the 163 institutional investors that purchased NewAmsterdam Pharma's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Wellington Management Group LLP ($6.38M), Frazier Life Sciences Management L.P. ($5.77M), Jennison Associates LLC ($4.31M), Deerfield Management Company L.P. Series C ($3.41M), Capital World Investors ($2.61M), Alliancebernstein L.P. ($2.33M), and RA Capital Management L.P. ($2.07M).

Institutional investors have bought a total of 15,668,528 shares in the last 24 months. This purchase volume represents approximately $507.01M in transactions.

Of the 53 institutional investors that sold NewAmsterdam Pharma's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Wellington Management Group LLP ($4.90M), Bain Capital Life Sciences Investors LLC ($3.41M), Viking Global Investors LP ($2.77M), Jennison Associates LLC ($1.45M), Fcpm Iii Services B.V. ($1.43M), Pictet Asset Management Holding SA ($1.29M), and Cormorant Asset Management LP ($1.18M).

Institutional investors have sold a total of 22,815,341 shares in the last 24 months. This volume of shares sold represents approximately $756.74M in transactions.


Related Companies

Institutional ownership data for NASDAQ:NAMS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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