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MBX Biosciences, Inc. hedge fund holdings

MBXNASDAQ
$58.51+1.96 (+3.47%)as of Oct 2, 2026

Every quarter, large institutional investment managers with over $100M in U.S.-listed assets under management disclose their U.S. equity holdings through 13F filings. Read together, those filings show which businesses professional capital is moving into and out of.

Price vs funds buying and selling

MBX · close · 13FReported Aug 14, 2026

Price vs funds buying and selling data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+249.3%). 0 fund reports plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
DateCategoryPersonRoleActionAmountChange in holding
Funds buying · new + increased
Funds selling · reduced + closed
Net buyers vs sellers
Buying = new + increased; selling = reduced + closed. Counts exclude position changes under 5% of the fund's holding last quarter.

Price and fund activity data

Quarterly 13F fund buying and selling activity
QuarterFunds buyingFunds sellingBoughtSoldFilersReported
Q2 20255024$51.3M$40.2M82Aug 14, 2025
Q3 20256134$242M$62.6M110Nov 14, 2025
Q4 20257743$205M$165M134Feb 14, 2026
Q1 20266154$258M$152M151May 15, 2026
Q2 20268047$525M$328M161Aug 14, 2026

Quarterly action breakdown

Q2 2026
161 filers
New position
29
$153M+2.78M sh
Increased
51
$371M+6.73M sh
Reduced
33
-$262M-4.74M sh
Out / sold
14
-$66.3M-1.2M sh
Last 4 quarters · free
Reported Aug 14, 2026
FundActionChange in dollarValue% of portfolioReported
Paradigm Biocapital Advisors LPNew Buy+$138M$138M2.59%Aug 14, 2026
Wellington Management Group LLPAdded 55.95%+$98.6M$275M0.05%Aug 14, 2026
Deep Track Capital, LPReduce 37.17%-$56.6M$95.6M1.39%Aug 14, 2026
Braidwell LPReduce 52.37%-$43.1M$39.2M1.45%Aug 14, 2026
Caligan Partners LPReduce 76.43%-$35.8M$11M0.52%Aug 14, 2026
Cormorant Asset Management, LPReduce 50.89%-$31.5M$30.4M1.56%Aug 14, 2026
EcoR1 Capital, LLCReduce 50.00%-$21.4M$21.4M1.04%Aug 14, 2026
DAFNA Capital Management LLCReduce 93.27%-$9.03M$652K0.12%Aug 14, 2026
Goelzer Investment Management, Inc.Reduce 97.56%-$8.84M$221K0.01%Jul 15, 2026
Elmind Capital, LPReduce 56.87%-$6.62M$5.02M1.26%Aug 14, 2026
Affinity Asset Advisors, LLCReduce 50.00%-$4.14M$4.14M0.19%Aug 13, 2026
Rhenman & Partners Asset Management ABNew Buy+$3.42M$3.42M0.32%Aug 13, 2026
Tetragon Partners GP LtdAdded 39.91%+$3.21M$11.2M1.77%Aug 13, 2026
Ensign Peak Advisors, IncNew Buy+$2.33M$2.33M0.00%Aug 14, 2026
Driehaus Capital Management LLCAdded 3.77%+$2.12M$58.3M0.34%Aug 14, 2026
Schroder Investment Management GroupSell 100%-$1.54M$00.00%Aug 13, 2026
Teachers Retirement System of the State of KentuckyNew Buy+$1.4M$1.4M0.01%Aug 12, 2026
Eventide Asset Management, LLCReduce 1.85%-$911K$48.2M0.64%Aug 14, 2026
Polar Capital Holdings PlcReduce 0.84%-$755K$88.8M0.21%Aug 14, 2026
Swiss Life Asset Management LtdSell 100%-$657K$00.00%Jul 29, 2026
Alps Advisors IncAdded 31.36%+$633K$2.65M0.01%Jul 29, 2026
Rock Springs Capital Management LPAdded 3.56%+$566K$16.5M0.80%Aug 14, 2026
Fred Alger Management, LLCNew Buy+$545K$545K0.00%Aug 14, 2026
DNB Asset Management ASNew Buy+$430K$430K0.00%Aug 11, 2026
Axq Capital, LPNew Buy+$428K$428K0.05%Aug 6, 2026
Exchange Traded Concepts, LLCReduce 19.97%-$378K$1.51M0.01%Aug 11, 2026
Quantinno Capital Management LPNew Buy+$359K$359K0.00%Aug 13, 2026
Seven Fleet Capital Management LPNew Buy+$331K$331K0.05%Aug 17, 2026
Canada Pension Plan Investment BoardReduce 52.29%-$315K$287K0.00%Aug 14, 2026
Pictet Asset Management Holding SANew Buy+$226K$226K0.00%Jul 30, 2026
Tidal Investments LLCReduce 43.56%-$213K$277K0.00%Aug 13, 2026
Tema ETFs LLCReduce 43.56%-$213K$277K0.01%Jul 10, 2026
Susquehanna Portfolio Strategies, LLCNew Buy+$210K$210K0.00%Aug 14, 2026
China Universal Asset Management Co., Ltd.Added 15.15%+$66.6K$506K0.03%Jul 24, 2026
PFM Health Sciences, LPReduce 1.28%-$51K$3.92M0.34%Aug 14, 2026
Koa Wealth Management, LLCReduce 4.47%-$44.2K$945K0.64%Jul 20, 2026
State of New Jersey Common Pension Fund DReduce 9.90%-$42K$382K0.00%Aug 4, 2026
Profund Advisors LLCAdded 5.05%+$23.4K$486K0.01%Aug 11, 2026
Aaron Wealth Advisors LLCReduce 0.03%-$20.8K$64.5M3.27%Jul 16, 2026
Kemnay Advisory Services Inc.New Buy+$17.7K$17.7K0.00%Aug 14, 2026
Aster Capital Management (DIFC) LtdNew Buy+$9.49K$9.49K0.00%Aug 14, 2026
HighVista Strategies LLCAdded 1.41%+$8.94K$642K0.15%Aug 14, 2026
Parkman Healthcare Partners LLCAdded 0.02%+$7.51K$44.2M4.52%Aug 14, 2026
J.Safra Asset Management CorpNew Buy+$4.69K$4.69K0.00%Aug 6, 2026
Virtus Investment Advisers, LLCAdded 0.92%+$4.64K$509K0.12%Aug 11, 2026
Optimize Financial Inc.Reduce 0.34%-$2.76K$798K0.29%Aug 27, 2026
Keating Financial Advisory Services, Inc.Added 237.50%+$2.1K$2.98K0.00%Aug 11, 2026
Bare Financial Services, IncNew Buy+$1.88K$1.88K0.00%Jul 27, 2026
Quarry LPNew Buy+$994$9940.00%Aug 14, 2026
Silver Grove Financial Group, Inc.New Buy+$718$7180.00%Aug 13, 2026
Versant Capital Management, IncSell 100%-$716$00.00%Jul 2, 2026
Hughes Financial Services, LLCNew Buy+$55$550.00%Jul 20, 2026

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