908 DEVICES INC

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MASS·65443P102·US·Common Stock·Healthcare - Medical Devices-13D/G

MASS (908 DEVICES INC) is held by 67 institutional investors as of Q2 2026. Largest holders: ARK Investment Management LLC ($17.6M), BlackRock, Inc. ($16.9M), VANGUARD CAPITAL MANAGEMENT LLC ($11.2M). Net institutional sentiment: Mixed.

67

Holders

(3 Elite)

$104.2M

Total Value

58% (67)

Consensus

39 buying - 28 selling

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

Smart Money Verdict

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Institutional (13F)31

Insider (Form 4)80

Activist (13D/13G)37

Congressional (STOCK Act)81

Holder Quality

69

★★★★★

Elite

57

★★★★

Strong

77

★★★

Solid

35

★★

Below

10

★

Weak

Held by 67 funds

3 elite

Who's Trading

Source dates: Price Oct 12, 2026 · Insiders Oct 9, 2026 · Activists Aug 14, 2026 · Congress none

InsiderBDBrown Christopher D.Exercise 60K shOct 7, 2026

InsiderBDBrown Christopher D.Sell $357KOct 7, 2026

InsiderGIGriffith Joseph H. IVSell $65KOct 6, 2026

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Top Holders

Top Holders (67)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
ARK Investment Management LLC	Increased	2M(+4.2%)	$17.6M	0.1%	-60.38%	35
BlackRock, Inc.	Increased	1.9M(+10.0%)	$16.9M	0.0%	+315.73%	31
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	1.3M(+15.4%)	$11.2M	0.0%	+81.54%	32
First Eagle Investment Management, LLC	Increased	929,985(+15.7%)	$8.1M	0.0%	+62.84%	32
GEODE CAPITAL MANAGEMENT, LLC	Increased	761,797(+9.5%)	$6.6M	0.0%	-40.08%	30
STATE STREET CORP	Decreased	606,560(-3.1%)	$5.3M	0.0%	+62.66%	0
MORGAN STANLEY	Increased	404,078(+8.3%)	$3.5M	0.0%	+191.49%	29
AMERICAN CENTURY COMPANIES INC	Increased	359,848(+543.8%)	$3.1M	0.0%	+43.89%	43
NORTHERN TRUST CORP	Increased	266,417(+10.4%)	$2.3M	0.0%	-49.35%	29
BANK OF AMERICA CORP /DE/	Increased	251,027(+901.0%)	$2.2M	0.0%	+43.97%	42
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	233,892(+1.9%)	$2M	0.0%	-41.32%	26
Sumitomo Mitsui Trust Group, Inc.	Decreased	228,681(-15.3%)	$2M	0.0%	-59.77%	0
Amova Asset Management Americas, Inc.	Decreased	228,681(-15.3%)	$2M	0.0%	-60.79%	0
VPVANGUARD PORTFOLIO MANAGEMENT LLC	Increased	194,858(+19.0%)	$1.7M	0.0%	+79.83%	30
RENAISSANCE TECHNOLOGIES LLC	Decreased	191,900(-16.6%)	$1.7M	0.0%	+61.35%	0
VFVANGUARD FIDUCIARY TRUST CO	Increased	186,056(+3.2%)	$1.6M	0.0%	+88.45%	26
RAYMOND JAMES FINANCIAL INC	Decreased	167,348(-5.2%)	$1.5M	0.0%	+48.79%	0
Russell Investments Group, Ltd.	Increased	149,655(+3.0%)	$1.3M	0.0%	+87.80%	26
Nuveen, LLC	Increased	141,727(+40.2%)	$1.2M	0.0%	+123.39%	34
DIMENSIONAL FUND ADVISORS LP	Increased	124,498(+4.8%)	$1.1M	0.0%	+91.28%	26

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MASS908 DEVICES INC

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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