908 Devices
MASS
118 hedge funds and large institutions have $137M invested in 908 Devices in 2025 Q4 according to their latest regulatory filings, with 22 funds opening new positions, 38 increasing their positions, 41 reducing their positions, and 10 closing their positions.
2,578% more call options, than puts
Call options by funds: $241K | Put options by funds: $9K
120% more first-time investments, than exits
New positions opened: 22 | Existing positions closed: 10
10% more funds holding
Funds holding: 107 → 118 (+11)
3.93% more ownership
Funds ownership: 68.35% → 72.28% (+3.9%)
7% less repeat investments, than reductions
Existing positions increased: 38 | Existing positions reduced: 41
36% less capital invested
Capital invested by funds: $215M → $137M (-$77.4M)
50% less funds holding in top 10
Funds holding in top 10: 2 → 1 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$16.3M |
| 2 |
NIM
Needham Investment Management
New York
|
+$3.83M |
| 3 |
Citadel Advisors
Miami,
Florida
|
+$1.85M |
| 4 |
MIM
Meros Investment Management
Dallas,
Texas
|
+$1.7M |
| 5 |
HWM
HighMark Wealth Management
St. Paul,
Minnesota
|
+$1.68M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
State Street
Boston,
Massachusetts
|
-$11.9M |
| 2 |
GAG
GM Advisory Group
Melville,
New York
|
-$2.79M |
| 3 |
Marshall Wace
London,
United Kingdom
|
-$1.74M |
| 4 |
Bank of America
Charlotte,
North Carolina
|
-$1.7M |
| 5 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
-$1.28M |
MASS Hedge Fund Activity: Q4 2025 in Review
118 of the 8,265 institutional investors tracked by Wall St. Rank reported a position in 908 Devices (MASS) for Q4 2025, worth a combined $137M — down 36% from $215M a quarter earlier.
Buyers outnumbered sellers: 22 funds opened new MASS positions and 10 closed out — a net gain of 12 holders — while 38 added to existing stakes and 41 trimmed.
The largest buyer was First Light Asset Management, adding an estimated $16.3M. The largest seller was State Street, cutting an estimated $11.9M.
- 118 institutional investors held 908 Devices (MASS) as of Q4 2025, up from 107 in Q3 2025.
- Funds reported $137M of 908 Devices stock for Q4 2025, down 36% quarter-over-quarter.
- 22 funds opened new 908 Devices positions in Q4 2025 and 10 closed out, a net change of +12 holders.
- The largest 908 Devices buyer in Q4 2025 was First Light Asset Management, an estimated $16.3M added.
- The largest 908 Devices seller in Q4 2025 was State Street, an estimated $11.9M sold.
Based on aggregated 13F filings for Q4 2025.