MBX Biosciences (MBX) Institutional Ownership $14.15 +0.52 (+3.82%) Closing price 04:00 PM EasternExtended Trading$14.14 -0.01 (-0.04%) As of 06:48 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 Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for MBX Biosciences (NYSE:MBX)Number ofInstitutional Buyers(last 12 months)57TotalInstitutional Inflows(last 12 months)$440.20MNumber ofInstitutional Sellers(last 12 months)13TotalInstitutional Outflows(last 12 months)$13.53M Get MBX Insider Trade Alerts Want to know when executives and insiders are buying or selling MBX Biosciences stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data MBX Institutional Buying and Selling by Quarter MBX Biosciences Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 Exome Asset Management LLC63,076$720K0.4%-52.6%0.188% 8/15/2025 Opaleye Management Inc.239,319$2.73M0.6%-4.3%0.712% 8/15/2025 EcoR1 Capital LLC1,149,794$13.12M0.8%-8.7%3.423% 8/15/2025 Bridgeway Capital Management LLC29,200$333K0.0%N/A0.087% 8/15/2025 Bank of America Corp DE42,387$484K0.0%+50.9%0.126% 8/14/2025 MPM Bioimpact LLC1,294,416$14.77M2.6%+14.3%3.853% 8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.9,329$106K0.0%+40.3%0.028% 8/14/2025 The Manufacturers Life Insurance Company 87,097$994K0.0%+73.8%0.259% 8/14/2025 Stempoint Capital LP141,021$1.61M0.5%+46.0%0.420% 8/14/2025 Resolute Capital Asset Partners LLC49,670$567K0.3%N/A0.148% Get the Latest News and Ratings for MBX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for MBX Biosciences and its competitors with MarketBeat's FREE daily newsletter. 8/13/2025 Walleye Capital LLC70,333$802K0.0%+116.5%0.209% 8/13/2025 Sio Capital Management LLC241,000$2.75M1.1%N/A0.717% 8/13/2025 Virtus Investment Advisers LLC8,772$100K0.0%+9.6%0.026% 8/12/2025 XTX Topco Ltd11,861$135K0.0%N/A0.035% 8/12/2025 Rhumbline Advisers23,662$270K0.0%+171.6%0.071% 8/12/2025 Franklin Resources Inc.494,852$5.65M0.0%+34.0%1.481% 8/12/2025 JPMorgan Chase & Co.8,184$93K0.0%-95.9%0.024% 8/8/2025 Rockefeller Capital Management L.P.34,135$389K0.0%N/A0.102% 8/8/2025 Intech Investment Management LLC14,271$163K0.0%+33.0%0.043% 8/8/2025 Geode Capital Management LLC348,447$3.98M0.0%+27.0%1.043% 7/29/2025 Koa Wealth Management LLC31,752$362K0.3%+63.7%0.095% 7/28/2025 TD Asset Management Inc171,304$1.96M0.0%+13.1%0.513% 7/21/2025 Platinum Investment Management Ltd.112,743$1.29M0.1%-39.4%0.337% 6/27/2025 Goldman Sachs Group Inc.15,168$112K0.0%-56.4%0.045% 5/16/2025 Woodline Partners LP877,461$6.48M0.0%+44.1%2.625% 5/16/2025 Exome Asset Management LLC133,113$982K0.8%N/A0.398% 5/16/2025 Goldman Sachs Group Inc.15,168$112K0.0%-56.4%0.045% 5/16/2025 Parkman Healthcare Partners LLC328,323$2.42M0.3%+93.1%0.982% 5/15/2025 MPM Bioimpact LLC1,132,950$8.36M1.4%N/A3.390% 5/15/2025 Driehaus Capital Management LLC1,579,207$11.66M0.1%-0.2%4.725% 5/14/2025 Affinity Asset Advisors LLC175,000$1.29M0.1%N/A0.524% 5/14/2025 Walleye Capital LLC32,490$240K0.0%N/A0.097% 5/14/2025 Jump Financial LLC28,996$214K0.0%N/A0.087% 5/14/2025 Wellington Management Group LLP2,638,521$19.47M0.0%-9.3%7.894% 5/13/2025 Wealthedge Investment Advisors LLC11,864$88K0.0%N/A0.035% 5/12/2025 Nuveen LLC14,471$107K0.0%N/A0.043% 5/12/2025 Koa Wealth Management LLC19,396$143K0.1%N/A0.058% 5/9/2025 Deutsche Bank AG8,762$65K0.0%+102.0%0.026% 5/9/2025 Charles Schwab Investment Management Inc.94,546$698K0.0%+1.3%0.283% 5/7/2025 TD Asset Management Inc151,504$1.12M0.0%+313.9%0.453% This stock could leave NVDA in the dust (Ad)Investing Legend Hints the End May be Near for These 3 Iconic Stocks Futurist Eric Fry say Amazon, Tesla and Nvidia are all on the verge of major disruption. 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He gives away the names and tickers completely free in his brand-new "Sell This, Buy That" broadcast.Click to get the full details on Eric Fry's "Nvidia alternative" right here.5/1/2025 New York State Common Retirement Fund4,300$32K0.0%N/A0.013% 4/30/2025 Alps Advisors Inc.26,034$192K0.0%-3.6%0.078% 4/28/2025 Aaron Wealth Advisors LLC50,000$369K0.0%N/A0.150% 3/24/2025 Wellington Management Group LLP2,909,639$52.99M0.0%-1.0%8.705% 2/17/2025 Woodline Partners LP608,721$11.22M0.1%+17.1%1.821% 2/17/2025 Parkman Healthcare Partners LLC170,000$3.13M0.4%N/A0.509% 2/17/2025Nuveen Asset Management LLC14,471$267K0.0%N/A0.043% 2/17/2025 Millennium Management LLC333,642$6.15M0.0%-24.2%0.998% 2/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.6,335$117K0.0%N/A0.019% 2/17/2025 Deutsche Bank AG4,338$80K0.0%N/A0.013% 2/17/2025 Driehaus Capital Management LLC1,581,760$29.15M0.2%+61.2%4.733% 2/17/2025 Citadel Advisors LLC220,330$4.06M0.0%+62.5%0.659% 2/17/2025 Bank of America Corp DE16,059$296K0.0%N/A0.048% 2/17/2025 BNP Paribas Financial Markets1,486$27K0.0%N/A0.004% 2/17/2025 Alyeska Investment Group L.P.174,700$3.22M0.0%-22.4%0.523% 2/14/2025 Schonfeld Strategic Advisors LLC71,500$1.32M0.0%N/A0.214% 2/14/2025 Northern Trust Corp90,682$1.67M0.0%N/A0.271% 2/14/2025 The Manufacturers Life Insurance Company49,675$916K0.0%+7.5%0.149% 2/14/2025 Virtus ETF Advisers LLC3,468$64K0.0%N/A0.010% 2/14/2025 Price T Rowe Associates Inc. MD1,161,527$21.41M0.0%-2.6%3.476% 2/14/2025 MetLife Investment Management LLC7,230$133K0.0%N/A0.022% 2/13/2025 Marshall Wace LLP25,900$477K0.0%+115.8%0.077% 2/13/2025 Wells Fargo & Company MN5,844$108K0.0%N/A0.017% 2/12/2025 Geode Capital Management LLC265,703$4.90M0.0%+1,093.2%0.795% 2/12/2025 Franklin Resources Inc.369,300$6.81M0.0%-17.9%1.105% 2/12/2025 Wellington Management Group LLP2,909,639$52.99M0.0%-1.0%8.706% 2/12/2025 Norges Bank25,000$461K0.0%N/A0.075% 2/12/2025 BIT Capital GmbH12,743$235K0.0%N/A0.038% 2/12/2025 JPMorgan Chase & Co.9,106$168K0.0%N/A0.027% 2/11/2025 Corebridge Financial Inc.5,593$103K0.0%N/A0.017% 2/11/2025 Platinum Investment Management Ltd.162,090$2.99M0.2%+8.1%0.485% 2/6/2025 Charles Schwab Investment Management Inc.93,311$1.72M0.0%N/A0.279% 2/4/2025 Bank of New York Mellon Corp23,914$441K0.0%N/A0.072% 1/30/2025 Rhumbline Advisers9,472$175K0.0%N/A0.028% 11/27/2024 Franklin Resources Inc.450,000$11.69M0.0%N/A1.347% 11/19/2024 Barclays PLC16,400$426K0.0%N/A0.049% 11/18/2024 Teachers Retirement System of The State of Kentucky26,708$694K0.0%N/A0.080% 11/16/2024 Geode Capital Management LLC22,269$579K0.0%N/A0.067% 11/15/2024 Frazier Life Sciences Management L.P.5,985,347$155.50M6.2%N/A17.909% 11/15/2024 Barclays PLC16,400$426K0.0%N/A0.049% 11/15/2024 Jane Street Group LLC26,570$690K0.0%N/A0.080% 11/15/2024 Wellington Management Group LLP2,937,853$74.26M0.0%N/A8.791% 11/15/2024 Soros Fund Management LLC30,000$779K0.0%N/A0.090% 11/15/2024 RA Capital Management L.P.1,511,334$39.26M0.5%N/A4.522% 11/15/2024 Point72 DIFC Ltd24,011$624K0.0%N/A0.072% 11/15/2024 Point72 Asset Management L.P.15,600$405K0.0%N/A0.047% 11/15/2024 Maven Securities LTD50,000$1.30M0.0%N/A0.150% 11/15/2024 Point72 Asia Singapore Pte. Ltd.10,706$278K0.1%N/A0.032% 11/14/2024 NEA Management Company LLC3,614,486$93.90M5.1%N/A10.816% 11/13/2024 The Manufacturers Life Insurance Company46,194$1.20M0.0%N/A0.138% The Coin That Could Define Trump’s Crypto Presidency (Ad)When Trump returned to office, one of his first moves was to tap PayPal’s former COO, David Sacks, as a top advisor on crypto and AI. That alone signaled a shift. But insiders close to D.C. aren’t just talking crypto policy—they’re quietly buying something most retail investors have missed. While the crowd chases Bitcoin to $150,000, Weiss Ratings expert Juan Villaverde believes a different coin—already backed by giants like Google, Visa, and PayPal—could soon become crypto’s “Third Giant.”Discover the coin that could define Trump’s crypto presidency.(Data available from 1/1/2016 forward) MBX Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of MBX shares? During the previous two years, 64 institutional investors and hedge funds held shares of MBX Biosciences. The most heavily invested institutionals were Frazier Life Sciences Management L.P. ($155.50M), NEA Management Company LLC ($93.90M), RA Capital Management L.P. ($39.26M), Price T Rowe Associates Inc. MD ($21.41M), Wellington Management Group LLP ($19.47M), MPM Bioimpact LLC ($14.77M), and EcoR1 Capital LLC ($13.12M).Learn more on MBX Biosciences' institutional investors. Which institutional investors have been buying MBX Biosciences' stock? Of the 57 institutional investors that purchased MBX Biosciences' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Frazier Life Sciences Management L.P. ($5.99M), NEA Management Company LLC ($3.61M), Wellington Management Group LLP ($2.94M), RA Capital Management L.P. ($1.51M), MPM Bioimpact LLC ($1.29M), Driehaus Capital Management LLC ($600.44K), and Franklin Resources Inc. ($575.54K). How much institutional buying is happening at MBX Biosciences? Institutional investors have bought a total of 19,466,235 shares in the last 24 months. This purchase volume represents approximately $440.20M in transactions. Which of MBX Biosciences' major shareholders have been selling company stock? Of the 13 institutional investors that sold MBX Biosciences' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Wellington Management Group LLP ($327.55K), JPMorgan Chase & Co. ($193.05K), EcoR1 Capital LLC ($109.48K), Millennium Management LLC ($106.77K), Franklin Resources Inc. ($80.70K), Platinum Investment Management Ltd. ($73.19K), and Exome Asset Management LLC ($70.04K). How much institutional selling is happening at MBX Biosciences? Institutional investors have sold a total of 1,096,020 shares in the last 24 months. This volume of shares sold represents approximately $13.53M in transactions. 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