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MBX Biosciences (MBX) Institutional Ownership

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$58.51 +1.96 (+3.47%)
Closing price 04:00 PM Eastern
Extended Trading
$58.54 +0.03 (+0.05%)
As of 07:30 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 MBX Biosciences (NASDAQ:MBX)

Number of
Institutional Buyers
(last 12 months)
87
Total
Institutional Inflows
(last 12 months)
$666.56M
Number of
Institutional Sellers
(last 12 months)
29
Total
Institutional Outflows
(last 12 months)
$177.23M
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MBX Institutional Buying and Selling by Quarter

MBX Biosciences Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026Tidal Investments LLC5,010$277K0.0%-43.6%0.010%
9/8/2026Arizona State Retirement System5,899$326K0.0%N/A0.012%
8/21/2026AXQ Capital LP7,757$428K0.0%N/A0.016%
8/21/2026Braidwell LP710,880$39.24M1.5%-52.4%1.476%
8/20/2026Moore Capital Management LP64,893$3.58M0.1%N/A0.135%
8/19/2026UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC21,344$1.18M0.0%+194.9%0.044%
8/19/2026Wellington Management Group LLP4,977,523$274.76M0.0%+55.9%10.335%
8/17/2026Seven Fleet Capital Management LP6,000$331K0.1%N/A0.012%
8/17/2026Bank of America Corp DE298,927$16.50M0.0%N/A0.621%
8/15/2026Jupiter Topco LLC10,300$568K0.0%N/A0.021%
8/15/2026Elmind Capital LP91,000$5.02M0.0%N/A0.189%
8/14/2026Canada Pension Plan Investment Board5,200$287K0.0%N/A0.011%
8/14/2026Parkman Healthcare Partners LLC800,173$44.17M4.5%N/A1.661%
8/14/2026Legal & General Group Plc21,583$1.19M0.0%N/A0.045%
8/14/2026The Manufacturers Life Insurance Company66,112$3.65M0.0%N/A0.137%
8/14/2026Group One Trading LLC5,231$289K0.0%N/A0.011%
8/14/2026Algert Global LLC42,070$2.32M0.0%+16.8%0.087%
8/12/2026Quantbot Technologies LP3,855$213K0.0%N/A0.008%
8/7/2026BlackRock Inc.3,323,672$183.47M0.0%N/A6.983%
8/7/2026Deutsche Bank AG31,693$1.75M0.0%N/A0.067%
8/6/2026Bank of New York Mellon Corp88,927$4.91M0.0%N/A0.187%
8/6/2026State of Wyoming1,055$58K0.0%N/A0.002%
7/10/2026Tema ETFs LLC5,010$277K0.0%-43.6%0.011%
5/19/2026Bank of America Corp DE28,750$858K0.0%-24.1%0.060%
5/19/2026Stempoint Capital LP499,469$14.91M2.8%+535.8%1.049%
5/19/2026Janus Henderson Group PLC10,300$308K0.0%N/A0.022%
5/18/2026California State Teachers Retirement System22,765$680K0.0%+1,197.9%0.048%
5/18/2026Rock Springs Capital Management LP287,967$8.60M0.5%+1.9%0.605%
5/18/2026EcoR1 Capital LLC777,000$23.19M1.0%-63.4%1.632%
5/16/2026The Manufacturers Life Insurance Company90,634$2.71M0.0%+30.3%0.190%
5/16/2026Orbimed Advisors LLC3,637,887$108.59M2.0%-7.6%7.643%
5/15/2026Affinity Asset Advisors LLC150,000$4.48M0.2%-40.0%0.315%
5/14/2026Sei Investments Co.8,989$268K0.0%+17.4%0.019%
5/7/2026Dimensional Fund Advisors LP46,753$1.40M0.0%N/A0.098%
5/7/2026Swiss National Bank44,400$1.33M0.0%N/A0.093%
5/5/2026Bank of New York Mellon Corp80,222$2.40M0.0%+6.6%0.169%
5/1/2026Candriam S.C.A.294,374$8.79M0.0%N/A0.619%
4/29/2026Koa Wealth Management LLC17,913$535K0.4%-2.7%0.038%
4/25/2026Strs Ohio1,600$48K0.0%+128.6%0.003%
4/22/2026Sterling Capital Management LLC949$28K0.0%-42.2%0.002%
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4/21/2026Aaron Wealth Advisors LLC1,168,176$34.87M2.0%+1,568.8%2.459%
4/16/2026SG Americas Securities LLC3,386$101K0.0%-28.9%0.007%
2/26/2026Seven Fleet Capital Management LP18,200$574K0.4%N/A0.041%
2/19/2026Invesco Ltd.21,203$669K0.0%+79.9%0.047%
2/18/2026KVP Capital Advisors LP121,524$3.83M3.7%N/A0.271%
2/18/2026XTX Topco Ltd20,139$635K0.0%-47.5%0.045%
2/18/2026Virtus Investment Advisers LLC8,910$281K0.1%-16.1%0.020%
2/18/2026Wellington Management Group LLP3,349,961$105.66M0.0%-30.5%7.461%
2/18/2026Orbimed Advisors LLC3,935,203$124.12M2.6%-1.7%8.764%
2/18/2026Opaleye Management Inc.260,000$8.20M1.1%+2.8%0.579%
2/18/2026Millennium Management LLC462,049$14.57M0.0%-32.1%1.029%
2/18/2026Elmind Capital LP211,000$6.66M2.0%N/A0.470%
2/18/2026Cormorant Asset Management LP1,120,000$35.33M1.6%-8.6%2.494%
2/18/2026Balyasny Asset Management L.P.119,726$3.78M0.0%+366.9%0.267%
2/18/2026Bridgeway Capital Management LLC10,000$315K0.0%-29.6%0.022%
2/17/2026Schonfeld Strategic Advisors LLC167,125$5.27M0.0%-40.9%0.372%
2/17/2026AQR Capital Management LLC31,409$991K0.0%+99.2%0.070%
2/17/2026Braidwell LP1,018,600$32.13M1.0%N/A2.268%
2/17/2026Trexquant Investment LP24,268$765K0.0%N/A0.054%
2/17/2026Price T Rowe Associates Inc. MD840,506$26.51M0.0%-12.0%1.872%
2/17/2026Osaic Holdings Inc.77,601$2.45M0.0%N/A0.173%
2/17/2026California State Teachers Retirement System1,754$55K0.0%+64.7%0.004%
2/17/2026Russell Investments Group Ltd.2,856$90K0.0%+92.8%0.006%
2/17/2026ExodusPoint Capital Management LP57,005$1.80M0.0%-43.0%0.127%
2/17/2026Royal Bank of Canada1,532$49K0.0%+59.6%0.003%
2/17/2026Graham Capital Management L.P.11,254$355K0.0%N/A0.025%
2/16/2026Squarepoint Ops LLC46,702$1.47M0.0%N/A0.104%
2/16/2026Verition Fund Management LLC57,575$1.82M0.0%-643.2%0.128%
2/16/2026Eventide Asset Management LLC890,000$28.07M0.4%N/A1.982%
2/16/2026Barclays PLC52,691$1.66M0.0%+143.6%0.117%
2/13/2026The Manufacturers Life Insurance Company 69,551$2.16M0.0%+1.7%0.155%
2/13/2026Affinity Asset Advisors LLC250,000$7.89M0.4%+51.5%0.557%
2/13/2026Schroder Investment Management Group73,736$2.28M0.0%-12.0%0.164%
2/13/2026Rafferty Asset Management LLC8,113$256K0.0%N/A0.018%
2/13/2026Charles Schwab Investment Management Inc.222,180$7.01M0.0%+30.7%0.495%
2/13/2026Police & Firemen s Retirement System of New Jersey7,520$237K0.0%+66.8%0.017%
2/13/2026State Street Corp672,740$21.22M0.0%+110.7%1.498%
2/13/2026Wells Fargo & Company MN31,931$1.01M0.0%+171.6%0.071%
2/13/2026Platinum Investment Management Ltd.43,597$1.38M0.3%-37.2%0.097%
2/12/2026MetLife Investment Management LLC16,018$505K0.0%+45.4%0.036%
2/12/2026Renaissance Technologies LLC32,644$1.03M0.0%N/A0.073%
2/12/2026Alps Advisors Inc.36,872$1.16M0.0%+119.0%0.082%
2/12/2026Nuveen LLC75,565$2.38M0.0%+241.3%0.168%
2/11/2026Deutsche Bank AG20,027$632K0.0%+83.3%0.045%
2/11/2026Fox Run Management L.L.C.23,820$751K0.1%N/A0.053%
2/11/2026Cerity Partners LLC21,323$673K0.0%N/A0.047%
2/11/2026Los Angeles Capital Management LLC10,360$327K0.0%N/A0.023%
2/10/2026TD Asset Management Inc101,450$3.20M0.0%-14.6%0.226%
2/10/2026Goldman Sachs Group Inc.331,938$10.47M0.0%-7.3%0.739%
2/10/2026AXQ Capital LP6,463$204K0.0%N/A0.014%
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2/10/2026Intech Investment Management LLC6,858$216K0.0%N/A0.015%
2/9/2026Geode Capital Management LLC649,391$20.49M0.0%+37.0%1.446%
2/6/2026ProShare Advisors LLC7,187$227K0.0%N/A0.016%
1/29/2026Koa Wealth Management LLC18,413$581K0.4%-31.1%0.041%
1/29/2026UBS Group AG281,212$8.87M0.0%+363.1%0.626%
1/29/2026Vanguard Group Inc.1,817,811$57.33M0.0%+8.4%4.049%
1/29/2026China Universal Asset Management Co. Ltd.15,317$483K0.0%+206.3%0.034%
1/27/2026GF Fund Management CO. LTD.882$28K0.0%N/A0.002%
1/26/2026Mirae Asset Global Investments Co. Ltd.2,182$69K0.0%N/A0.005%
1/26/2026CWM LLC1,784$56K0.0%+28.9%0.004%


MBX Institutional Ownership - Frequently Asked Questions

During the previous two years, 136 institutional investors and hedge funds held shares of MBX Biosciences. The most heavily invested institutionals were Wellington Management Group LLP ($274.76M), BlackRock Inc. ($183.47M), Frazier Life Sciences Management L.P. ($155.50M), Orbimed Advisors LLC ($108.59M), NEA Management Company LLC ($93.90M), Vanguard Group Inc. ($57.33M), and Deep Track Capital LP ($55.13M).Learn more on MBX Biosciences' institutional investors.

Of the 124 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: Wellington Management Group LLP ($7.28M), Frazier Life Sciences Management L.P. ($5.99M), NEA Management Company LLC ($3.61M), BlackRock Inc. ($3.32M), RA Capital Management L.P. ($1.51M), Franklin Resources Inc. ($1.39M), and MPM Bioimpact LLC ($1.29M).

Institutional investors have bought a total of 19,058,972 shares in the last 24 months. This purchase volume represents approximately $666.56M in transactions.

Of the 29 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 ($1.47M), EcoR1 Capital LLC ($1.35M), Braidwell LP ($781.59K), Schonfeld Strategic Advisors LLC ($464.29K), Orbimed Advisors LLC ($365K), Millennium Management LLC ($218.37K), and Price T Rowe Associates Inc. MD ($114.22K).

Institutional investors have sold a total of 5,383,757 shares in the last 24 months. This volume of shares sold represents approximately $177.23M in transactions.


Related Companies

Institutional ownership data for NASDAQ:MBX 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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