13F

Stock

MBX Biosciences, Inc.

MBX · held by 138 managers

Reported value

$1.5B

Holders

138

+1 new · −2 exited

Holders’ est. mark

$1.31M

Price effect on 5 books still in the name

Largest holder

$209.8M

Frazier Life Sciences Management, L.P.

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Frazier Life Sciences Management, L.P.6.65M$209.8MHeld
ORBIMED ADVISORS LLC3.94M$124.1MHeld
NEA Management Company, LLC3.61M$114MHeld
WELLINGTON MANAGEMENT GROUP LLP3.35M$105.7MHeld
Deep Track Capital, LP3.25M$102.5MHeld
BlackRock, Inc.2.92M$92.1MHeld
NVP ASSOCIATES, LLC2.14M$67.4MHeld
EcoR1 Capital, LLC2.12M$67MHeld
Vanguard1.82M$57.3MHeld
Driehaus Capital Management LLC1.41M$44.4MHeld
Cormorant Asset Management, LP1.12M$35.3MHeld
BRAIDWELL LP1.02M$32.1MHeld
Woodline Partners LP1M$31.5MHeld
Kynam Capital Management, LP934.8K$29.5MHeld
EVENTIDE ASSET MANAGEMENT, LLC890K$28.1MHeld
Parkman Healthcare Partners LLC885.6K$27.9MHeld
Citadel809.9K$25.5MHeld
Point72 Asset Management, L.P.680.6K$21.5MHeld
State Street672.7K$21.2MHeld
D. E. Shaw & Co., Inc.671.8K$21.2MHeld
TCG Crossover Management, LLC650K$20.5MHeld
GEODE CAPITAL MANAGEMENT, LLC649.4K$20.5MHeld
MILLENNIUM MANAGEMENT LLC462K$14.6MHeld
Soleus Capital Management, L.P.408.9K$12.9MHeld
GOLDMAN SACHS GROUP INC331.9K$10.5MHeld
Trails Edge Capital Partners, LP315.2K$9.94MHeld
Rock Springs Capital Management LP282.6K$8.91MHeld
UBS Group AG281.2K$8.87MHeld
Opaleye Management Inc.260K$8.2MHeld
Affinity Asset Advisors, LLC250K$7.88MHeld
CHARLES SCHWAB INVESTMENT MANAGEMENT INC222.2K$7.01MHeld
Goelzer Investment Management, Inc.221.7K$6.99MHeld
Elmind Capital, LP211K$6.65MHeld
NORTHERN TRUST CORP190.9K$6.02MHeld
Schonfeld Strategic Advisors LLC167.1K$5.27MHeld
DAFNA Capital Management LLC165.3K$5.21MHeld
Tetragon Partners GP Ltd143.3K$4.52MHeld
TWO SIGMA INVESTMENTS, LP138.6K$4.37MHeld
KVP Capital Advisors, LP121.5K$3.83MHeld
Balyasny Asset Management L.P.119.7K$3.78MHeld
TD Asset Management Inc101.5K$3.2MHeld
BURKEHILL GLOBAL MANAGEMENT, LP100K$3.15MHeld
JANE STREET GROUP, LLC86.6K$2.73MHeld
PFM Health Sciences, LP79.3K$2.5MHeld
STEMPOINT CAPITAL LP78.6K$2.48MHeld
OSAIC HOLDINGS, INC.77.6K$2.45MHeld
SUSQUEHANNA INTERNATIONAL GROUP, LLP76.5K$2.41MHeld
Nuveen, LLC75.6K$2.38MHeld
Bank of New York Mellon Corp75.3K$2.37MHeld
SCHRODER INVESTMENT MANAGEMENT GROUP73.7K$2.28MHeld
Aaron Wealth Advisors LLC70K$2.21MHeld
MANUFACTURERS LIFE INSURANCE COMPANY, THE69.6K$2.15MHeld
MORGAN STANLEY59K$1.86M$629.9KAdded$1.08M
Verition Fund Management LLC57.6K$1.82MHeld
ExodusPoint Capital Management, LP57K$1.8MHeld
BARCLAYS PLC52.7K$1.66M$303.6KAdded$1.28M
Squarepoint Ops LLC46.7K$1.47MHeld
PLATINUM INVESTMENT MANAGEMENT LTD43.6K$1.38MHeld
BANK OF AMERICA CORP /DE/37.9K$1.2M$373.7KAdded$729.4K
ALPS ADVISORS INC36.9K$1.16MHeld
Creative Planning33.7K$1.06MHeld
RHUMBLINE ADVISERS33.4K$1.05MHeld
Renaissance Technologies32.6K$1.03MHeld
WELLS FARGO & COMPANY/MN31.9K$1.01MHeld
Icahn Capital31.4K$990.6KHeld
ALLIANCEBERNSTEIN L.P.27.9K$880KHeld
Brevan Howard Capital Management LP25.7K$809.4KHeld
Trexquant Investment LP24.3K$765.4KHeld
FOX RUN MANAGEMENT, L.L.C.23.8K$751.3KHeld
Qube Research & Technologies Ltd23.2K$732.1KHeld
Cerity Partners LLC21.3K$672.5KHeld
Invesco Ltd.21.2K$668.7KHeld
XTX Topco Ltd20.1K$635.2KHeld
DEUTSCHE BANK AG\20K$631.7KHeld
Koa Wealth Management, LLC18.4K$580.7KHeld
Seven Fleet Capital Management LP18.2K$574KHeld
CITIGROUP INC16.4K$517KHeld
MetLife Investment Management, LLC16K$505.2KHeld
Fidelity15.7K$496.6KHeld
China Universal Asset Management Co., Ltd.15.3K$483.1KHeld
JPMORGAN CHASE & CO14.6K$461.9KHeld
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.13.3K$418.2KHeld
AMERICAN CENTURY COMPANIES INC12.2K$385.9KHeld
CANADA PENSION PLAN INVESTMENT BOARD11.6K$365.9KHeld
Graham Capital Management, L.P.11.3K$355KHeld
BRIDGEWAY CAPITAL MANAGEMENT, LLC10K$315.4KHeld
GROUP ONE TRADING LLC9.43K$297.4KHeld
PROFUND ADVISORS LLC9.21K$290.6KHeld
SIMPLEX TRADING, LLC8.93K$281.5KHeld
Virtus Investment Advisers, LLC8.91K$281KHeld
Rafferty Asset Management, LLC8.11K$255.9KHeld
SEI INVESTMENTS CO7.66K$241.5KHeld
Police & Firemen's Retirement System of New Jersey7.52K$237.2KHeld
ProShare Advisors LLC7.19K$226.7KHeld
LOS ANGELES CAPITAL MANAGEMENT LLC10.4K$225.7KHeld
INTECH INVESTMENT MANAGEMENT LLC6.86K$216.3KHeld
BNP PARIBAS FINANCIAL MARKETS6.78K$214KHeld
AXQ CAPITAL, LP6.46K$203.8KHeld
NEW YORK STATE COMMON RETIREMENT FUND4.3K$135.6KHeld
Tower Research Capital LLC (TRC)3.42K$107.7KHeld
Rockefeller Capital Management L.P.3K$94.6KHeld
Russell Investments Group, Ltd.2.86K$90.1KHeld
Legal & General Group Plc2.54K$80.1KHeld
Ameritas Investment Partners, Inc.2.31K$72.9KHeld
Mirae Asset Global Investments Co., Ltd.2.18K$68.8KHeld
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM1.75K$55.3KHeld
Sterling Capital Management LLC1.64K$51.8KHeld
NISA INVESTMENT ADVISORS, LLC1.59K$50.2KHeld
ROYAL BANK OF CANADA1.53K$49KHeld
GF FUND MANAGEMENT CO. LTD.882$27.8KHeld
PRICE T ROWE ASSOCIATES INC /MD/840.5K$26.5KHeld
STRS OHIO700$22.1KHeld
US BANCORP \DE\312$9.84KHeld
GAMMA Investing LLC299$9.43KHeld
Aster Capital Management (DIFC) Ltd265$8.36KHeld
PNC Financial Services Group, Inc.196$6.18KHeld
SIGNATUREFD, LLC179$5.65KHeld
Physician Wealth Advisors, Inc.109$3.44KHeld
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC100$3.15KHeld
JONES FINANCIAL COMPANIES LLLP80$2.52KHeld
Parallel Advisors, LLC61$1.92KHeld
Allworth Financial LP52$1.64K$351Added$1.2K
ACADIAN ASSET MANAGEMENT LLC48.6K$1.53KHeld
Cornerstone Financial Management LLC34$1.07KHeld
EverSource Wealth Advisors, LLC25$789Held
ROTHSCHILD INVESTMENT LLC24$757Held
GSA CAPITAL PARTNERS LLP19.3K$609Held
Global Retirement Partners, LLC19$599Held
Essential Partners LLC15$473$28Added$438
Farther Finance Advisors, LLC10$315Held
SBI Securities Co., Ltd.9$284Held
SG Americas Securities, LLC4.76K$150Held
True Wealth Design, LLC2$64Held
Cygnus Capital Advisors, LLC1.8K$57Held
CWM, LLC1.78K$56Held
IFP Advisors, Inc1$32New
AMALGAMATED BANK895$28Held
Daiwa Securities Group Inc.150$5Held

Who left

Positions as of Q4 2025. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.