908 Devices Inc.

MASS

Exchange: Nasdaq
Industry: Laboratory Analytical Instruments
SEC CIK: 0001555279

SEC filings (opens in a new tab)

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 2025 vs. Q4 2024

How the institutions holding 908 Devices Inc. changed between Q4 2024 and Q1 2025.

All holders in Q1 2025 All holders in Q4 2024

13F holders of MASS: Q4 2024 compared with Q1 2025
Measure	Q4 2024	Of which not filed for Q1 2025	Q1 2025	Change
Holders	81	1	87	+7
Shares	16.8M	107.0K	20.6M	+3.97M (+23.9%)
Value	$36.9M	$235.3K	$92.3M	+$55.7M (+151.9%)

1 institution that held it in Q4 2024 haven't filed for Q1 2025 yet. Not filing isn't selling, so the changes leave them out.

New holders (23)

Institutions that held 908 Devices Inc. at the end of Q1 2025 but not at the end of Q4 2024.

Institutions new to MASS in Q1 2025
Institution	Shares	Value	% of portfolio
First Light Asset Management, LLC	1,701,095	$7.62M	0.87%
Invesco Ltd.	649,630	$2.91M	0.00%
Essex Investment Management Co LLC	480,549	$2.15M	0.45%
Legato Capital Management LLC	142,442	$638.1K	0.09%
Nuveen, LLC	106,951	$479.1K	0.00%
AQR Capital Management LLC	81,558	$365.4K	0.00%
FNY Investment Advisers, LLC	75,489	$338.0K	0.21%
PDT Partners, LLC	41,600	$186.4K	0.01%
Axq Capital, LP	18,165	$81.4K	0.03%
Wolverine Trading, LLC	14,353	$58.0K	0.00%
Price T Rowe Associates Inc	12,410	$56.0K	0.00%
Zacks Investment Management	12,388	$55.5K	0.00%
Cambridge Investment Research Advisors, Inc.	10,000	$45.0K	0.00%
Police & Firemen's Retirement System of New Jersey	5,622	$25.2K	0.00%
Antipodes Partners Ltd	4,382	$19.6K	0.00%
Larson Financial Group LLC	3,638	$16.3K	0.00%
Versant Capital Management, Inc	1,989	$8.91K	0.00%
EverSource Wealth Advisors, LLC	483	$2.16K	0.00%
Coldstream Capital Management Inc	247	$1.11K	0.00%
Rise Advisors, LLC	207	$927	0.00%
South State Corp.	200	$896	0.00%
The PNC Financial Services Group, Inc.	126	$564	0.00%
True Wealth Design, LLC	32	$144	0.00%

Sold out (16)

Institutions that held 908 Devices Inc. at the end of Q4 2024 and filed for Q1 2025 without it.

Institutions that sold out of MASS in Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Ameriprise Financial Inc	1,814,187	$3.99M
Granahan Investment Management Inc	522,786	$1.15M
Sands Capital Ventures, LLC	237,258	$522.0K
Citadel Advisors LLC	197,183	$433.8K
Millennium Management LLC	116,358	$256.0K
Jane Street Group, LLC	113,890	$250.6K
Stifel Financial Corp	23,509	$51.7K
Occudo Quantitative Strategies LP	16,376	$36.0K
Prudential Financial Inc	15,405	$33.9K
Two Sigma Advisers, LP	13,500	$29.7K
US Bancorp	12,688	$27.9K
Intech Investment Management LLC	10,885	$23.9K
Federated Hermes, Inc.	1,206	$2.65K
R Squared Ltd	260	$572
Zurcher Kantonalbank (Zurich Cantonalbank)	258	$568
GPS Wealth Strategies Group, LLC	200	$440

Not filed for Q1 2025 yet (1)

Institutions that held 908 Devices Inc. at the end of Q4 2024 and haven't filed a 13F for Q1 2025. Not filing isn't selling, so they aren't counted as sold out.

Institutions holding MASS in Q4 2024 that haven't filed for Q1 2025
Institution	Shares, Q4 2024	Value, Q4 2024
Nuveen Asset Management, LLC	106,951	$235.3K