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MASS 908 Devices Inc

Which ETFs hold MASS? 908 Devices Inc is held by 1 fund tracked by ETFpeek.

Held by 1 fund todayData as of 9 Oct 2026
HealthcareMedical Devices
$11.55
+44.4% 1y
$5.0352-week range$13.35
Market cap
$525M
3-month
+42.6%
CEO
Dr. Kevin J. Knopp Ph.D.
Revenue · last 4 qtrs (+23.3% YoY)

908 Devices Inc. provides purpose-built handheld mass spectrometry and fourier transform infrared (FTIR) devices for use in vital health and safety applications. The company's products include MX908, a handheld, battery-powered, and Mass Spec device that is designed for rapid analysis of solid, liquid, vapor, and aerosol materials of unknown identity; XplorIR, a handheld device that uses FTIR spectroscopy to identify, quantify, and track gases and vapors; ThreatID, a portable FTIR device that rapidly detects and identifies approximately 28,000 unknown gas, vapor, powder, and liquid chemical hazards; ProtectIR, a handheld FTIR device that can identify approximately 23,000 solid and liquid chemical hazards; and VipIR, a handheld 3-in-1 analyzer that integrates FTIR, Raman spectroscopy, and smart spectral processing (SSP), a proprietary algorithm, to provide a single result from just one sample. It operates in the United States, Europe, the Middle East, Africa, the Asia Pacific, and rest of Americas. The company was incorporated in 2012 and is headquartered in Burlington, Massachusetts.

Provider

Currently Held By

ARK
ARKG
ARK Genomic Revolution ETF
Weight in fund1.10%
Shares held1,959,635
Market value$22.6M
View fund →
Not held by the selected provider.
last 90 days
Net flow (90d):−$3.4M (1 without value)·1 BUY / 14 SELL·score ≥ 40
DatePersonActionPlanSharesValueScore i
11 Aug 2026
Kevin J. Knopp
Co-Founder, CEO, President & Director
SELLUnknown115,748$1.1M90
Net flow (90d):−$3.4M (1 without value)·1 BUY / 14 SELL·showing all trades
DatePersonActionPlanSharesValueScore i
29 Sep 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown18,000$207K0
24 Sep 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown24,000$273K0
23 Sep 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown1,000$11K0
25 Aug 2026
Joseph H. IV Griffith
CFO & Treasurer
SELLUnknown11,459$125K30
21 Aug 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown41,578$441K30
20 Aug 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown8,422$89K30
12 Aug 2026
Kevin J. Knopp
Co-Founder, CEO, President & Director
SELLUnknown2,747$28K30
11 Aug 2026
Kevin J. Knopp
Co-Founder, CEO, President & Director
SELLUnknown145,918
2 tranches
$1.4M90
11 Aug 2026
Christopher D. Brown
Co-Founder, Board Advisor & Director
SELLUnknown8,358$77K30
10 Aug 2026
Christopher D. Brown
Co-Founder, Board Advisor & Director
SELLUnknown9,442$85K30
10 Aug 2026
Kevin J. Knopp
Co-Founder, CEO, President & Director
SELLUnknown348$3K30
5 Aug 2026
Christopher D. Brown
Co-Founder, Board Advisor & Director
SELLUnknown20,000$170K30
4 Aug 2026
Investment Company, Inc. AWM
Director / Other
SELLUnknown50,000$418K30
1 Aug 2026
Brandi C Vann
Director / Other
BUYOption Exercise5,192—0
Data: Finnhub (SEC Form 4 filings) · Score: ETFpeek heuristic
0 trades
DateFundDirectionShares Changed% Δ ETF i% Δ Position i
No trades recorded yet.
No trade history for SmartShares funds — their underlying ETFs are passive index trackers, so day-to-day rebalancing is minimal.

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