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Disclosery

MBX MBX BIOSCIENCES INC

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Stock (common), issuer CIK 1776111

80 managers (80 13F filers) reported a position in MBX shares at 2025-03-31, 35,666,449 shares in all. 26 filers opened a position and 10 filers sold out during the quarter.

Managers
80
13F filers
80
New
26
Added
24
Reduced
15
Sold out
10
Shares held by filers
35,666,449

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2025

Filers in the available 13F reports with a share position at 2025-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Frazier Life Sciences Management, L.P.5,985,347$44.2M2.02%013F-HRTimeline
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC4,002,887$29.5M0.71%+190,67213F-HRTimelineGroup
NEA Management Company, LLC3,614,486$26.7M2.05%013F-HRTimeline
Deep Track Capital, LP3,018,935$22.3M0.72%013F-HRTimeline
WELLINGTON MANAGEMENT GROUP LLPin group WELLINGTON MANAGEMENT GROUP L…2,638,521$19.5M<0.01%-271,11813F-HRTimelineGroup
NVP ASSOCIATES, LLC2,136,335$15.8M14.05%013F-HRTimeline
Driehaus Capital Management LLC1,579,207$11.7M0.11%-2,55313F-HRTimeline
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.1,511,334$11.2M0.19%013F-HRTimelineGroup
EcoR1 Capital, LLC1,259,273$9.29M0.55%013F-HRTimeline
MPM BIOIMPACT LLC1,132,950$8.36M1.44%new13F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/1,100,916$8.13M<0.01%-60,61113F-HRTimeline
Woodline Partners LP877,461$6.48M0.04%+268,74013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.783,042$5.78M<0.01%+55,09013F-HRTimelineGroup
Cormorant Asset Management, LP700,000$5.17M0.39%013F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC665,563$4.91M<0.01%-5,38513F-HRTimelineGroup
TCG Crossover Management, LLC650,000$4.8M0.65%013F-HRTimeline
FRANKLIN RESOURCES INCin group Franklin Resources369,315$2.73M<0.01%+1513F-HRTimelineGroup
Parkman Healthcare Partners LLC328,323$2.42M0.29%+158,32313F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC274,458$2.03M<0.01%+8,75513F-HRTimelineGroup
Opaleye Management Inc.250,000$1.84M0.41%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO201,235$1.49M<0.01%+192,12913F-HRTimelineGroup
Schonfeld Strategic Advisors LLC200,642$1.48M0.01%+129,14213F-HRTimeline
PLATINUM INVESTMENT MANAGEMENT LTD185,932$1.37M0.08%+23,84213F-HRTimeline
STATE STREET CORPin group STATE STREET CORP177,220$1.31M<0.01%+34,57113F-HRTimelineGroup
Affinity Asset Advisors, LLC175,000$1.29M0.2%new13F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC170,440$1.26M<0.01%-163,20213F-HRTimelineGroup
TD Asset Management Inc151,504$1.12M<0.01%+114,90413F-HRTimeline
Exome Asset Management LLC133,113$982K0.88%new13F-HR/ATimeline
MORGAN STANLEYin group MORGAN STANLEY114,610$846K<0.01%+90,77513F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP111,211$821K<0.01%+85,31113F-HRTimelineGroup
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.110,482$815K<0.01%new13F-HR/ATimelineGroup
CITIGROUP INCin group CITIGROUP INC97,328$718K<0.01%+88,46413F-HRTimelineGroup
STEMPOINT CAPITAL LP96,615$713K0.23%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP96,507$712K<0.01%+5,82513F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co94,546$698K<0.01%+1,23513F-HR/ATimelineGroup
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …50,110$370K<0.01%+43513F-HRTimelineGroup
Aaron Wealth Advisors LLC50,000$369K0.04%new13F-HRTimeline
Shay Capital LLC49,133$363K0.11%new13F-HRTimeline
FMR LLCin group FMR LLC44,240$326K<0.01%+19,66713F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC40,225$297K0.03%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP33,833$250K<0.01%new13F-HRTimelineGroup
Walleye Capital LLCin group Walleye Capital LLC32,490$240K<0.01%new13F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS30,916$228K<0.01%+29,43013F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC28,996$214K<0.01%new13F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/28,090$207K<0.01%+12,03113F-HRTimelineGroup
UBS Group AGin group UBS Group AG27,499$203K<0.01%-18,40213F-HRTimelineGroup
ALPS ADVISORS INCin group ALPS ADVISORS INC26,034$192K<0.01%-98613F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp23,910$176K<0.01%-413F-HRTimelineGroup
Squarepoint Ops LLCin group Squarepoint Ops LLC20,098$148K<0.01%new13F-HR/ATimelineGroup
Verition Fund Management LLC19,815$146K<0.01%new13F-HRTimeline
Koa Wealth Management, LLC19,396$143K0.12%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC15,168$112K<0.01%-19,65913F-HR/ATimelineGroup
Nuveen, LLCin group TIAA14,471$107K<0.01%13F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…13,660$101K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP12,369$91K0.01%new13F-HRTimeline
WEALTHEDGE INVESTMENT ADVISORS, LLC11,864$87.6K0.04%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC11,818$87.2K<0.01%-5,61513F-HR/ATimelineGroup
INTECH INVESTMENT MANAGEMENT LLC10,728$79.2K<0.01%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\8,762$64.7K<0.01%+4,42413F-HRTimelineGroup
RHUMBLINE ADVISERS8,712$64.3K<0.01%-76013F-HR/ATimeline
Virtus Investment Advisers, LLCgroup of 2 filers holding8,006$59.1K+4,538Timeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…6,647$49.1K<0.01%+31213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN5,977$44.1K<0.01%+13313F-HRTimelineGroup
Corebridge Financial, Inc.in group Corebridge Financial, Inc.5,511$40.7K<0.01%-8213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND4,300$31.7K<0.01%new13F-HR/ATimeline
Police & Firemen's Retirement System of…2,143$15.8K<0.01%013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,365$10.1K<0.01%+56213F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…1,177$8.69K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc1,107$8.17K<0.01%013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…832$6.14K<0.01%013F-HRTimeline
STRS OHIO700$5.17K<0.01%-1,40013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA635$4K<0.01%-19813F-HR/ATimelineGroup
AMALGAMATED BANK384$3K<0.01%013F-HRTimeline
US BANCORP \DE\in group US BANCORP \DE\330$2.44K<0.01%new13F-HRTimelineGroup
CWM, LLCin group CWM, LLC137$1K<0.01%new13F-HRTimelineGroup
Sterling Capital Management LLC91$672<0.01%-7013F-HRTimeline
GAMMA Investing LLC20$148<0.01%new13F-HR/ATimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…9$66<0.01%new13F-HRTimelineGroup
True Wealth Design, LLC3$23<0.01%new13F-HRTimeline
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.