Roubaix Capital, LLC Mks Instruments Inc Transaction History

Roubaix Capital, LLC

$162 Million
Q3 2025

A detailed history of Roubaix Capital, LLC transactions in Mks Instruments Inc stock. As of the latest transaction made, Roubaix Capital, LLC holds 33,588 shares of MKSI stock, worth $4.79 Million. This represents 2.56% of its overall portfolio holdings.

Number of Shares

33,588

Previous 53,526 37.25%

Holding current value

$4.79 Million

Previous $5.32 Million 21.83%

% of portfolio

2.56%

Previous 2.95%

13 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 12, 2025	SELL	$89.62 - $129.92 $1.79 Million - $2.59 Million	-19,938 Reduced 37.25%	33,588 $4.16 Million
Q2 2025 Aug 13, 2025	BUY	$58.78 - $100.27 $1.29 Million - $2.21 Million	21,995 Added 69.76%	53,526 $5.32 Million
Q1 2025 May 13, 2025	SELL	$78.89 - $122.69 $1.78 Million - $2.77 Million	-22,614 Reduced 41.77%	31,531 $2.53 Million
Q4 2024 Feb 13, 2025	BUY	$98.56 - $117.93 $1.71 Million - $2.05 Million	17,341 Added 47.12%	54,145 $5.65 Million
Q3 2024 Oct 25, 2024	BUY	$103.52 - $144.6 $779,195 - $1.09 Million	7,527 Added 25.71%	36,804 $4 Million

Q2 2024 Aug 02, 2024	BUY	$108.17 - $137.16 $68,038 - $86,273	629 Added 2.2%	29,277 $3.82 Million
Q1 2024 Aug 01, 2024	BUY	$97.35 - $133.36 $451,606 - $618,657	4,639 Added 19.32%	28,648 $3.81 Million
Q1 2024 May 13, 2024	SELL	$97.35 - $133.36 $2.49 Million - $3.42 Million	-25,623 Reduced 47.21%	28,648 $3.81 Million
Q4 2023 Aug 01, 2024	BUY	$65.32 - $105.03 $1.67 Million - $2.69 Million	25,623 Added 89.44%	54,271 $5.58 Million
Q4 2023 Feb 07, 2024	BUY	$65.32 - $105.03 $1.98 Million - $3.18 Million	30,262 Added 126.04%	54,271 $5.58 Million
Q3 2023 Aug 01, 2024	SELL	$83.17 - $109.5 $385,825 - $507,970	-4,639 Reduced 16.19%	24,009 $2.08 Million
Q3 2023 Oct 26, 2023	SELL	$83.17 - $109.5 $33,101 - $43,581	-398 Reduced 1.63%	24,009 $2.08 Million
Q2 2023 Jul 26, 2023	BUY	$79.76 - $110.27 $1.95 Million - $2.69 Million	24,407 New	24,407 $2.64 Million

Others Institutions Holding MKSI

# of Institutions

488

Shares Held

70.6M

Call Options Held

2.05M

Put Options Held

371K

View Full List

About MKS INSTRUMENTS INC

Ticker MKSI
Exchange NASDAQ
Sector Technology
Industry Scientific & Technical Instruments
Shares Outstandng 66,491,100
Market Cap $9.49B
Description
MKS Instruments, Inc. provides instruments, systems, subsystems, and process control solutions that measure, monitor, deliver, analyze, power, and control critical parameters of manufacturing processes worldwide. Its Vacuum & Analysis segment offers pressure and vacuum control solutions, including direct and indirect pressure measurement; ma...

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Roubaix Capital, LLC Mks Instruments Inc Transaction History