Cathie Wood 908 Devices Inc. Transaction History

Ark Investment Management LLC

$14.2 Billion
Q3 2025

A detailed history of Cathie Wood (Ark Investment Management LLC) transactions in 908 Devices Inc. stock. As of the latest transaction made, Ark Investment Management LLC holds 1,953,772 shares of MASS stock, worth $10.7 Million. This represents 0.12% of its overall portfolio holdings.

Number of Shares

1,953,772

Previous 2,648,278 26.22%

Holding current value

$10.7 Million

Previous $18.9 Million 9.36%

% of portfolio

0.12%

Previous 0.16%

20 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 12, 2025	SELL	$5.44 - $8.76 $3.78 Million - $6.08 Million	-694,506 Reduced 26.22%	1,953,772 $17.1 Million
Q2 2025 Jul 30, 2025	SELL	$3.63 - $7.97 $911,380 - $2 Million	-251,069 Reduced 8.66%	2,648,278 $18.9 Million
Q1 2025 May 07, 2025	BUY	$1.98 - $4.58 $219,346 - $507,376	110,781 Added 3.97%	2,899,347 $13 Million
Q4 2024 Feb 04, 2025	SELL	$1.88 - $3.91 $810,248 - $1.69 Million	-430,983 Reduced 13.39%	2,788,566 $6.13 Million
Q3 2024 Oct 31, 2024	SELL	$3.45 - $6.17 $2.48 Million - $4.43 Million	-718,082 Reduced 18.24%	3,219,549 $11.2 Million

Q2 2024 Jul 26, 2024	SELL	$5.0 - $7.24 $556,535 - $805,862	-111,307 Reduced 2.75%	3,937,631 $20.3 Million
Q1 2024 Apr 18, 2024	SELL	$6.55 - $9.92 $1.95 Million - $2.95 Million	-297,641 Reduced 6.85%	4,048,938 $30.6 Million
Q4 2023 Jan 17, 2024	BUY	$4.96 - $12.41 $1.65 Million - $4.13 Million	333,119 Added 8.3%	4,346,579 $48.8 Million
Q3 2023 Oct 18, 2023	BUY	$6.0 - $8.2 $243,330 - $332,551	40,555 Added 1.02%	4,013,460 $26.7 Million
Q2 2023 Jul 10, 2023	SELL	$5.78 - $10.02 $115,565 - $200,339	-19,994 Reduced 0.5%	3,972,905 $27.3 Million
Q1 2023 Apr 17, 2023	BUY	$6.61 - $10.66 $2.01 Million - $3.23 Million	303,424 Added 8.22%	3,992,899 $34.3 Million
Q4 2022 Jan 24, 2023	SELL	$7.0 - $17.96 $600,033 - $1.54 Million	-85,719 Reduced 2.27%	3,689,475 $0
Q3 2022 Oct 17, 2022	BUY	$15.18 - $24.99 $2.23 Million - $3.67 Million	146,974 Added 4.05%	3,775,194 $62.1 Million
Q2 2022 Jul 11, 2022	BUY	$13.3 - $20.74 $1.93 Million - $3.01 Million	145,294 Added 4.17%	3,628,220 $50.5 Million
Q1 2022 Apr 19, 2022	BUY	$13.18 - $26.28 $6.41 Million - $12.8 Million	486,533 Added 16.24%	3,482,926 $66.2 Million
Q4 2021 Jan 28, 2022	BUY	$23.17 - $38.77 $5.69 Million - $9.52 Million	245,516 Added 8.93%	2,996,393 $77.5 Million
Q3 2021 Nov 12, 2021	BUY	$29.99 - $39.13 $8.89 Million - $11.6 Million	296,520 Added 12.08%	2,750,877 $89.5 Million
Q2 2021 Aug 05, 2021	BUY	$36.7 - $55.11 $50.7 Million - $76.1 Million	1,381,491 Added 128.77%	2,454,357 $95.1 Million
Q1 2021 May 13, 2021	BUY	$39.94 - $75.0 $25.4 Million - $47.7 Million	635,618 Added 145.37%	1,072,866 $52 Million
Q4 2020 Feb 12, 2021	BUY	$49.0 - $67.92 $21.4 Million - $29.7 Million	437,248 New	437,248 $24.9 Million

Others Institutions Holding MASS

# of Institutions

112

Shares Held

24.7M

Call Options Held

39.9K

Put Options Held

13.6K

View Full List

About 908 Devices Inc.

Ticker MASS
Exchange NASDAQ
Sector Healthcare
Industry Medical Devices
Shares Outstandng 31,590,200
Market Cap $173M
Description
908 Devices Inc., a commercial-stage technology company, provides various purpose-built handheld and desktop mass spectrometry (Mass Spec) devices to interrogate unknown and invisible materials in life sciences research, bioprocessing, industrial biotech, forensics, and adjacent markets. The company's products include MX908, a handheld, battery-...

More about MASS

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