Which hedge funds own MASS? 908 DEVICES INC, Q2 2026 13F holders
15 tracked hedge funds disclosed a position in MASS (908 DEVICES INC) in their Q2 2026 13F filings, worth $106.4m in total. The largest holder by portfolio weight is AWM Investment Company, Inc. at 3.7% of its book. 5 opened a new position this quarter: Occudo Quantitative Strategies LP, Brevan Howard Capital Management LP, Magnetar Financial LLC, Schonfeld Strategic Advisors LLC. 3 exited: Trexquant Investment LP, Millennium Management LLC, Two Sigma Investments, LP.
- 15
- Holders Tracked managers whose filing for the quarter reports a long equity position in the security.
- 5
- New this quarter Holders whose previous filing (at most two quarters earlier) did not report the security.
- 3
- Exited this quarter Tracked managers whose previous filing reported the security and whose filing for the quarter does not.
- $1.2m
- Inflow, new holders Combined value of the positions the new holders reported for the quarter.
- $1.6m
- Outflow, exits Combined value the exiting managers reported for the security in their previous filing.
- $106m
- Combined value Sum of the holders' reported positions in the security.
- 1.2%
- Share of managers holding Holders as a share of tracked managers filing for that quarter. Comparable across the 2024 coverage expansion, where the raw holder count is not.
Holders, Q2 2026
| AWM Investment Company, Inc. Hedge fund | 3.7% | −6.2% | reduced |
| First Light Asset Management, LLC Hedge fund | 3.3% | +3.5% | added |
| Prescott Group Capital Management, L.L.C. Hedge fund | 0.3% | 0.0% | held |
| Campbell & CO Investment Adviser LLC Hedge fund | 0.05% | +275% | added |
| Gsa Capital Partners LLP Hedge fund | 0.03% | −80% | reduced |
| Occudo Quantitative Strategies LP Hedge fund | 0.01% | – | new |
| Graham Capital Management, L.P. Hedge fund | 0.0% | +12% | added |
| Brevan Howard Capital Management LP Hedge fund | 0.0% | – | new |
| Renaissance Technologies LLC Hedge fund | 0.0% | −17% | reduced |
| Magnetar Financial LLC Hedge fund | 0.0% | – | new |
| Squarepoint Ops LLC Hedge fund | 0.0% | −82% | reduced |
| Schonfeld Strategic Advisors LLC Hedge fund | 0.0% | – | new |
| D. E. Shaw & Co., Inc. Hedge fund | 0.0% | – | new |
| AQR Capital Management LLC Hedge fund | 0.0% | −0.5% | held |
| Citadel Advisors LLC Hedge fund | 0.0% | −57% | reduced |
Exited since the previous filing
| Trexquant Investment LP | 0.0% | $448k |
| Millennium Management LLC | 0.0% | $872k |
| Two Sigma Investments, LP | 0.0% | $270k |
Ownership over time
Who discovered MASS first? Beta
The run: Q4 2024 → Q3 2025, +298%
| AWM Investment Company, Inc. | Q1 2025 | 0.4% | +2.9 pts |
Split-adjusted quarter-end prices, excluding dividends. They describe the stock while each manager held it, not the return it earned.