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

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.