908 Devices
MASS
112 hedge funds and large institutions have $171M invested in 908 Devices in 2026 Q1 according to their latest regulatory filings, with 11 funds opening new positions, 32 increasing their positions, 46 reducing their positions, and 16 closing their positions.
200% more funds holding in top 10
Funds holding in top 10: 1 → 3 (+2)
25% more capital invested
Capital invested by funds: $137M → $171M (+$33.7M)
2.49% more ownership
Funds ownership: 72.28% → 74.77% (+2.5%)
5% less funds holding
Funds holding: 118 → 112 (-6)
30% less repeat investments, than reductions
Existing positions increased: 32 | Existing positions reduced: 46
31% less first-time investments, than exits
New positions opened: 11 | Existing positions closed: 16
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $62K
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$7.74M |
| 2 |
GIM
Granahan Investment Management
Waltham,
Massachusetts
|
+$3.78M |
| 3 |
NIM
Needham Investment Management
New York
|
+$2.94M |
| 4 |
First Eagle Investment Management
New York
|
+$1.13M |
| 5 |
Russell Investments Group
London,
United Kingdom
|
+$896K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Marshall Wace
London,
United Kingdom
|
-$1M |
| 2 |
HF
HRT Financial
New York
|
-$812K |
| 3 |
Dimensional Fund Advisors
Austin,
Texas
|
-$801K |
| 4 |
Citadel Advisors
Miami,
Florida
|
-$751K |
| 5 |
Goldman Sachs
New York
|
-$552K |
MASS Hedge Fund Activity: Q1 2026 in Review
112 of the 8,173 institutional investors tracked by Wall St. Rank reported a position in 908 Devices (MASS) for Q1 2026, worth a combined $171M — up 25% from $137M a quarter earlier.
Sellers outnumbered buyers: 16 funds closed out of MASS and 11 opened new positions — a net loss of 5 holders — while 46 trimmed existing stakes and 32 added.
The largest buyer was First Light Asset Management, adding an estimated $7.74M. The largest seller was Marshall Wace, exiting entirely with an estimated $1M sold.
- 112 institutional investors held 908 Devices (MASS) as of Q1 2026, down from 118 in Q4 2025.
- Funds reported $171M of 908 Devices stock for Q1 2026, up 25% quarter-over-quarter.
- 11 funds opened new 908 Devices positions in Q1 2026 and 16 closed out, a net change of -5 holders.
- The largest 908 Devices buyer in Q1 2026 was First Light Asset Management, an estimated $7.74M added.
- The largest 908 Devices seller in Q1 2026 was Marshall Wace, an estimated $1M sold.
Based on aggregated 13F filings for Q1 2026.