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Who owns 908 Devices (MASS) stock

107 funds reported 908 Devices (MASS) shares in their latest 13F filings, worth $224M in all. The largest holder is First Light Asset Management, LLC ($54.7M). Last quarter 52 funds added to their stakes and 42 cut them.

Largest holders of MASS (13F)Largest holders of MASS (13F)First Light Asset Management, LLC$54.7MARK Investment Management LLC$17.6MBlackRock$16.9MFirst Eagle Investment Management…$16.2MNeedham Investment Management LLC$15.8MVanguard Capital Management LLC$11.2MVanguard Group$7.7MGeode Capital Management, LLC$6.6MGranahan Investment Management, L…$6.0MEssex Investment Management Co LLC$5.6M

Largest holders (13F)

FundSharesValueChangeQuarter
First Light Asset Management, LLC6,282,804$54.7Mincrease2026-06-30
ARK Investment Management LLC2,027,920$17.6Mincrease2026-06-30
BlackRock1,944,236$16.9Mincrease2026-06-30
First Eagle Investment Management, LLC1,859,970$16.2Mincrease2026-06-30
Needham Investment Management LLC1,820,620$15.8Mincrease2026-06-30
Vanguard Capital Management LLC1,291,570$11.2Mincrease2026-06-30
Vanguard Group1,470,864$7.7Mincrease2025-12-31
Geode Capital Management, LLC761,797$6.6Mincrease2026-06-30
Granahan Investment Management, LLC692,092$6.0Mdecrease2026-06-30
Essex Investment Management Co LLC455,706$5.6Mdecrease2026-09-30
State Street606,560$5.3Mdecrease2026-06-30
Prescott Group Capital Management, L.L.C.361,595$4.5Munchanged2026-09-30
Morgan Stanley404,078$3.5Mincrease2026-06-30
Meros Investment Management, LP361,368$3.1Mdecrease2026-06-30
American Century Companies359,848$3.1Mincrease2026-06-30

908 Devices' latest quarter

908 Devices, Q2 2026: revenue $16.1M (+23% year over year), operating margin -79.7%, net loss $11.9M, operating cash flow $3.2M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most MASS stock?

By the latest 13F filings: First Light Asset Management, LLC ($54.7M); ARK Investment Management LLC ($17.6M); BlackRock ($16.9M); First Eagle Investment Management, LLC ($16.2M); Needham Investment Management LLC ($15.8M).

What is the short interest in MASS?

2,708,429 shares were sold short at the 2026-10-15 settlement, -0.71% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.