MBX BIOSCIENCES INC

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MBX·55287L101·US·Common Stock·Healthcare - Biotechnology-Activist

MBX (MBX BIOSCIENCES INC) is held by 97 institutional investors as of Q2 2026. Largest holders: FMR LLC ($293.8M), WELLINGTON MANAGEMENT GROUP LLP ($274.8M), BlackRock, Inc. ($183.5M). Net institutional sentiment: Mixed.

97

Holders

(7 Elite)

$1.5B

Total Value

61% (102)

Consensus

62 buying - 40 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)52

Insider (Form 4)58

Activist (13D/13G)78

Congressional (STOCK Act)61

Holder Quality

70

★★★★★

Elite

40

★★★★

Strong

78

★★★

Solid

36

★★

Below

57

★

Weak

Held by 97 funds

7 elite

Who's Trading

Source dates: Price Oct 12, 2026 · Insiders Aug 5, 2026 · Activists Aug 14, 2026 · Congress none

ActivistDTDeep Track Capital, LP3.6%Aug 14, 2026

ActivistFLFrazier Life Sciences Public Fund, L.P.3.0%Aug 10, 2026

ActivistOAORBIMED ADVISORS LLC6.4%Aug 10, 2026

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Top Holders

Top Holders (97)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
FMR LLC	Increased	5.3M(+81.3%)	$293.8M	0.0%	+25.22%	47
WELLINGTON MANAGEMENT GROUP LLP	Increased	5M(+56.0%)	$274.8M	0.0%	+57.07%	44
BlackRock, Inc.	Increased	3.3M(+13.0%)	$183.5M	0.0%	+104.88%	34
Polar Capital Holdings Plc	Decreased	1.6M(-0.8%)	$88.8M	0.2%	+70.33%	0
VAVANGUARD CAPITAL MANAGEMENT LLC	Decreased	1.5M(-0.0%)	$81.6M	0.0%	+70.33%	0
DRIEHAUS CAPITAL MANAGEMENT LLC	Increased	1.1M(+3.8%)	$58.3M	0.3%	+127.41%	37
Woodline Partners LP	Increased	900,092	$49.7M	0.2%	+187.09%	35
STATE STREET CORP	Increased	864,466(+9.8%)	$47.7M	0.0%	+92.00%	32
PRICE T ROWE ASSOCIATES INC /MD/	Decreased	814,807(-20.8%)	$45M	0.0%	+124.34%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	773,072(+15.3%)	$42.7M	0.0%	+103.74%	33
GOLDMAN SACHS GROUP INC	Increased	459,005(+0.2%)	$25.3M	0.0%	+144.28%	29
MWMARSHALL WACE, LLP	Increased	401,885(+540.9%)	$22.2M	0.0%	+1.30%	46
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	346,717(+18.2%)	$19.1M	0.0%	+51.49%	33
BANK OF AMERICA CORP /DE/	Increased	298,927(+939.8%)	$16.5M	0.0%	+0.76%	46
Candriam S.C.A.	Decreased	289,893(-1.5%)	$16M	0.1%	+70.33%	0
UBS Group AG	Decreased	272,747(-21.4%)	$15.1M	0.0%	+82.60%	0
FRANKLIN TEMPLETON INC	New	252,665	$13.9M	0.0%	-5.76%	39
Schonfeld Strategic Advisors LLC	Increased	248,670(+100.8%)	$13.7M	0.0%	+56.84%	45
MORGAN STANLEY	Increased	248,558(+687.5%)	$13.7M	0.0%	+3.12%	45
NORTHERN TRUST CORP	Increased	246,678(+17.1%)	$13.6M	0.0%	+95.43%	33

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer