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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 11 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.

Q1 2026 vs. Q4 2025

How the institutions holding 908 Devices Inc. changed between Q4 2025 and Q1 2026.

All holders in Q1 2026All holders in Q4 2025

13F holders of MASS: Q4 2025 compared with Q1 2026
MeasureQ4 2025Of which not filed for Q1 2026Q1 2026Change
Holders1181112−5
Shares26.2M1.47M27.9M+3.26M (+13.2%)
Value$137.3M$7.72M$171.0M+$41.4M (+31.9%)

1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so the changes leave them out.

New holders (11)

Institutions that held 908 Devices Inc. at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to MASS in Q1 2026
InstitutionSharesValue% of portfolio
Vanguard Capital Management LLC1,119,236$6.85M0.00%
Vanguard Fiduciary Trust Co180,250$1.10M0.00%
Vanguard Portfolio Management LLC163,694$1.00M0.00%
Trexquant Investment LP73,194$447.9K0.00%
Skopos Labs, Inc.46,259$283.1K0.01%
Dynamic Technology Lab Private Ltd13,898$85.1K0.01%
Vanguard Global Advisers, LLC10,286$63.0K0.00%
Intelligence Driven Advisers, LLC10,000$61.2K0.01%
Parallel Advisors, LLC1,937$11.9K0.00%
Farther Finance Advisors, LLC393$2.44K0.00%
SBI Securities Co., Ltd.3$180.00%

Sold out (16)

Institutions that held 908 Devices Inc. at the end of Q4 2025 and filed for Q1 2026 without it.

Institutions that sold out of MASS in Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Marshall Wace, LLP190,635$1.00M
HRT Financial LP154,830$812.0K
Acadian Asset Management LLC81,862$428.0K
Point72 Asset Management, L.P.55,945$293.7K
STRS Ohio29,700$155.9K
Axq Capital, LP28,125$147.7K
Engineers Gate Manager LP26,681$140.1K
Opal Capital LLC17,581$121.1K
Intech Investment Management LLC11,515$60.5K
Daiwa Securities Group Inc.6,750$35.0K
State of Wyoming3,544$18.6K
Amalgamated Bank860$5.00K
Flagship Harbor Advisors, LLC500$2.63K
Quarry LP197$1.03K
SRS Capital Advisors, Inc.114$599
Advocate Investing Services LLC18$95

Not filed for Q1 2026 yet (1)

Institutions that held 908 Devices Inc. at the end of Q4 2025 and haven't filed a 13F for Q1 2026. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MASS in Q4 2025 that haven't filed for Q1 2026
InstitutionShares, Q4 2025Value, Q4 2025
Vanguard Group Inc1,470,864$7.72M