WhaleCreepWhat the best hedge funds own, from their SEC 13F filings
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Which hedge funds own MASS? 908 DEVICES INC, Q2 2026 13F holders

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4 of the hedge funds tracked by WhaleCreep disclosed a position in MASS (908 DEVICES INC) in their Q2 2026 13F filings, worth $3.1m in total. The largest holder by portfolio weight is Brevan Howard Capital Management at 0.0% of its book. 2 managers opened a new position this quarter: Brevan Howard Capital Management, D. E. Shaw & Co. 1 exited: Millennium Management.

4tracked managers holding
2opened this quarter
1exited this quarter

Which hedge funds hold MASS? Current holders by portfolio weight

ManagerAs ofWeight of bookValueSharesΔ sharesAction
Brevan Howard Capital ManagementQ2 2026 0.0%$180.0k20,692 new
Renaissance Technologies LLCQ2 2026 0.0%$1.7m191,900 -17% reduced
D. E. Shaw & CoQ2 2026 0.0%$656.4k75,446 new
Citadel AdvisorsQ2 2026 0.0%$545.9k62,747 -57% reduced

Exited since the previous quarter

ManagerPrior weightPrior value
Millennium Management0.0%$871.6k

How has hedge fund ownership of MASS changed?

QuarterManagers holdingCombined value
Q2 20264$3.1m
Q1 20263$3.2m
Q4 20252$1.5m
Q3 20251$1.8m
Q2 20251$1.2m
Q1 20251$647.8k
Q4 20241$648.9k
Q3 20241$1.1m
Q2 20241$1.0m
Q1 20242$965.7k
Q4 20232$1.3m
Q3 20231$564.0k
Q2 20232$1.8m
Q1 20232$1.3m
Q4 20222$1.8m
Q3 20222$2.7m

Counts every tracked manager that disclosed MASS in that quarter's filing, including managers that have since stopped filing.