MBX BIOSCIENCES INC

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MBX·55287L101·US·equity·Healthcare - Biotechnology-Activist

MBX (MBX BIOSCIENCES INC) is held by 87 institutional investors as of Q1 2026. Largest holders: WELLINGTON MANAGEMENT GROUP LLP ($95.3M), BlackRock, Inc. ($87.8M), FMR LLC ($87.7M). Net institutional sentiment: Mixed.

87

Holders

Avg rating(6 Elite)

$574.6M

Total Value

58% (95)

Fund Consensus

53 buying - 38 selling

Smart Money Verdict

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65Positive MomentumStrong Convergence

Institutional (13F)62

Insider (Form 4)78

Activist (13D/13G)50

Congressional (STOCK Act)

No data

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See how MBX's score breaks down across 4 SEC sources

Holder Quality

6

★★★★★

Elite

28

★★★★

Strong

29

★★★

Solid

27

★★

Below

5

★

Weak

Held by 87 funds

6 elite

Who's Trading

InsiderASAzoulay SalomonExercise 55K shMay 8, 2026

InsiderASAzoulay SalomonExercise 15K shMay 8, 2026

InsiderASAzoulay SalomonSell $2.1MMay 8, 2026

InsiderASAzoulay SalomonSell $575KMay 8, 2026

ActivistFMR LLC6.2%May 6, 2026

ActivistBlackRock, Inc.4.8%Apr 27, 2026

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13F: Mar 31, 2026Insider & Congress: Updated regularly

Positions (87)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
WELLINGTON MANAGEMENT GROUP LLP	Decreased	3.2M(-4.7%)	$95.3M	0.0%	+56.28%	0
BlackRock, Inc.	Increased	2.9M(+0.7%)	$87.8M	0.0%	+50.82%	30
FMR LLC	Increased	2.9M(+186x)	$87.7M	0.0%	+6.58%	48
Polar Capital Holdings Plc	New	1.6M	$48.4M	0.2%	+6.25%	48
DRIEHAUS CAPITAL MANAGEMENT LLC	Decreased	1M(-27.7%)	$30.4M	0.2%	+49.83%	0
CITADEL ADVISORS LLC	Increased	932,833(+15.2%)	$27.8M	0.0%	+65.55%	33
Woodline Partners LP	Decreased	900,063(-10.0%)	$26.9M	0.1%	+79.10%	0
STATE STREET CORP	Increased	787,208(+17.0%)	$23.5M	0.0%	+33.34%	33
GEODE CAPITAL MANAGEMENT, LLC	Increased	670,385(+3.2%)	$20M	0.0%	+54.61%	29
MILLENNIUM MANAGEMENT LLC	Increased	564,415(+22.1%)	$16.8M	0.0%	+93.84%	34
GOLDMAN SACHS GROUP INC	Increased	457,945(+38.0%)	$13.7M	0.0%	+51.59%	37
UBS Group AG	Increased	346,914(+23.4%)	$10.4M	0.0%	+13.90%	34
Candriam S.C.A.	New	294,374	$8.8M	0.0%	+6.25%	38
DED. E. Shaw & Co., Inc.	Decreased	288,889(-57.0%)	$8.6M	0.0%	+5.02%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Decreased	214,908(-3.3%)	$6.4M	0.0%	+58.33%	0
NORTHERN TRUST CORP	Increased	210,575(+10.3%)	$6.3M	0.0%	+49.41%	30
JPMORGAN CHASE & CO	Increased	147,057(+904.1%)	$4M	0.0%	+9.54%	43
Schonfeld Strategic Advisors LLC	Decreased	123,814(-25.9%)	$3.7M	0.0%	+196.37%	0
TD ASSET MANAGEMENT INC	Increased	115,998(+14.3%)	$3.5M	0.0%	+132.71%	30
TWO SIGMA INVESTMENTS, LP	Decreased	115,075(-17.0%)	$3.4M	0.0%	+9.52%	0

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High Conviction Moves-Signal Convergence-Fund Consensus-Double-Down Signals

Data sourced from four SEC data sources: 13F, Form 4, 13D/13G, and STOCK Act. Not financial advice. Full disclaimer