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908 Devices Inc.

MASS
Exchange
Nasdaq
Industry
Laboratory Analytical Instruments
SEC CIK
0001555279

In the last 90 days, 908 Devices Inc. insiders filed 0 open-market purchases and 13 sales; 111 institutions reported holding it in 13F filings for Q2 2026, worth $244.1M in total; ARK Invest is the only superinvestor holding it.

Q2 2026 vs. Q1 2026

How the institutions holding 908 Devices Inc. changed between Q1 2026 and Q2 2026.

All holders in Q2 2026All holders in Q1 2026

13F holders of MASS: Q1 2026 compared with Q2 2026
MeasureQ1 2026Of which not filed for Q2 2026Q2 2026Change
Holders1124111+3
Shares27.9M291.1K28.1M+414.0K (+1.5%)
Value$171.0M$1.78M$244.1M+$74.9M (+44.2%)

4 institutions that held it in Q1 2026 haven't filed for Q2 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (14)

Institutions that held 908 Devices Inc. at the end of Q2 2026 but not at the end of Q1 2026.

Institutions new to MASS in Q2 2026
InstitutionSharesValue% of portfolio
D. E. Shaw & Co., Inc.75,446$656.4K0.00%
Acadian Asset Management LLC70,374$609.0K0.00%
Brevan Howard Capital Management LP20,692$180.0K0.00%
Pier 88 Investment Partners LLC14,200$123.5K0.03%
Magnetar Financial LLC13,815$120.2K0.00%
Advyzon Investment Management, LLC12,338$107.3K0.01%
Gainline Financial Partners, LLC12,338$107.3K0.10%
Occudo Quantitative Strategies LP12,256$106.6K0.01%
Schonfeld Strategic Advisors LLC11,134$96.9K0.00%
Axq Capital, LP10,704$93.1K0.01%
Wealth Enhancement Advisory Services, LLC11,325$91.7K0.00%
SRS Capital Advisors, Inc.405$3.52K0.00%
Clear Street Markets LLC229$1.99K0.00%
SJS Investment Consulting Inc.26$2270.00%

Sold out (11)

Institutions that held 908 Devices Inc. at the end of Q1 2026 and filed for Q2 2026 without it.

Institutions that sold out of MASS in Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
Tao Capital Management LP568,981$3.48M
Millennium Management LLC142,422$871.6K
Trexquant Investment LP73,194$447.9K
Cassaday & Co Wealth Management LLC71,629$438.4K
Two Sigma Investments, LP44,127$270.1K
XTX Topco Ltd41,365$253.2K
49 Wealth Management, LLC17,101$104.7K
Dynamic Technology Lab Private Ltd13,898$85.1K
Intelligence Driven Advisers, LLC10,000$61.2K
Group One Trading, L.P.202$1.24K
Jones Financial Companies LLLP100$578

Not filed for Q2 2026 yet (4)

Institutions that held 908 Devices Inc. at the end of Q1 2026 and haven't filed a 13F for Q2 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MASS in Q1 2026 that haven't filed for Q2 2026
InstitutionShares, Q1 2026Value, Q1 2026
GM Advisory Group, Inc.238,218$1.46M
Skopos Labs, Inc.46,259$283.1K
CWM, LLC6,594$40.4K
Sunbelt Securities, Inc.22$135