908 Devices
MASS
111 hedge funds and large institutions have $244M invested in 908 Devices in 2026 Q2 according to their latest regulatory filings, with 14 funds opening new positions, 43 increasing their positions, 36 reducing their positions, and 11 closing their positions.
43% more capital invested
Capital invested by funds: $171M → $244M (+$73.1M)
27% more first-time investments, than exits
New positions opened: 14 | Existing positions closed: 11
19% more repeat investments, than reductions
Existing positions increased: 43 | Existing positions reduced: 36
0.53% less ownership
Funds ownership: 74.77% → 74.23% (-0.53%)
1% less funds holding
Funds holding: 112 → 111 (-1)
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
NIM
Needham Investment Management
New York
|
+$4.46M |
| 2 |
American Century Companies
Kansas City,
Missouri
|
+$2.33M |
| 3 |
Bank of America
Charlotte,
North Carolina
|
+$1.74M |
| 4 |
FLAM
First Light Asset Management
Edina,
Minnesota
|
+$1.61M |
| 5 |
BlackRock
New York
|
+$1.36M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
TCM
Tao Capital Management
San Francisco,
California
|
-$3.48M |
| 2 |
AIC
AWM Investment Company
New York
|
-$2.46M |
| 3 |
GCP
GSA Capital Partners
London,
United Kingdom
|
-$1.55M |
| 4 |
Squarepoint
New York
|
-$1.35M |
| 5 |
Millennium Management
New York
|
-$872K |
MASS Hedge Fund Activity: Q2 2026 in Review
111 of the 8,349 institutional investors tracked by Wall St. Rank reported a position in 908 Devices (MASS) for Q2 2026, worth a combined $244M — up 43% from $171M a quarter earlier.
Buyers outnumbered sellers: 14 funds opened new MASS positions and 11 closed out — a net gain of 3 holders — while 43 added to existing stakes and 36 trimmed.
The largest buyer was Needham Investment Management, adding an estimated $4.46M. The largest seller was Tao Capital Management, exiting entirely with an estimated $3.48M sold.
- 111 institutional investors held 908 Devices (MASS) as of Q2 2026, down from 112 in Q1 2026.
- Funds reported $244M of 908 Devices stock for Q2 2026, up 43% quarter-over-quarter.
- 14 funds opened new 908 Devices positions in Q2 2026 and 11 closed out, a net change of +3 holders.
- The largest 908 Devices buyer in Q2 2026 was Needham Investment Management, an estimated $4.46M added.
- The largest 908 Devices seller in Q2 2026 was Tao Capital Management, an estimated $3.48M sold.
Based on aggregated 13F filings for Q2 2026.