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KEYS vs MKSI

Keysight Technologies, Inc. and MKS Inc. Common Stock

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Keysight Technologies, Inc.

Keysight Technologies, Inc. provides electronic design and test solutions worldwide. The company operates in two segments, Communications Solutions Group and Electronic Industrial Solutions Group. It offers oscilloscopes; electronic design automation software; instrument measurement and workflow software, application software testing, instrument control software and connectivity, and software testing; modular instruments; digital multimeters, phase noise measurement, power meters and power sensors, counters, LCR meters and impedance measurement products, and electrometers; spectrum, logic, noise figure, and network analyzers; and protocol analyzers and exercisers, bit error ratio testers, AC and DC power analyzers, materials test equipment, device current waveform analyzers, and curve tracers. It also provides signal, waveform, and function generators; arbitrary waveform generators, DC power supplies, and DC electronic loads; wireless drive test, radio access and core network test, wireless analyzers, wireless network emulators, channel emulations, and over-the-air test; application and threat intelligence, cloud test, 5G NR base station test, cyber training simulators, network test hardware, protocol and load test, network security test, and network modeling; bypass switches, cloud visibility and synchronization, network and application monitoring, and network packet brokers and taps; and application-specific test systems, in-circuit test systems, parametric test, laser interferometers and calibration systems, monolithic laser combiners and precision optics, photonic test and measurement products, MMIC millimeter-wave and microwave devices, and accessories. In addition, it offers product support, technical and application support, installation, training, engineering, and integration services. The company was founded in 1939 and is headquartered in Santa Rosa, California.

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MKS Inc. Common Stock

MKS Inc. provides foundational technology solutions to semiconductor manufacturing, electronics and packaging, and specialty industrial applications in the United States, China, South Korea, Japan, Taiwan, Singapore, and internationally. It operates through Vacuum Solutions Division (VSD), Photonics Solutions Division (PSD), and Material Solutions Division (MSD) segments. The VSD segment provides foundational technology solutions, including pressure measurement and control, flow measurement and control, gas and vapor delivery, gas composition analysis, electronic control technology, reactive gas generation and delivery, power generation and delivery, and fiber optic temperature and position sensing. The PSD segment offers range of solutions, which include lasers, beam measurement and profiling, precision motion control, vibration isolation systems, photonics instruments, temperature sensing, opto-mechanical components, optical elements, systems for flexible PCB laser processing, and laser-based systems, as well as high density interconnect PCB and package manufacturing. The MSD segment develops, process, and manufactures technologies comprising advanced surface modification, electroless and electrolytic plating, and surface finishing for chemistry, equipment, and services markets, as well as high-technology applications. In addition, the company sells its products and services through direct sales, network of independent distributors, and sales representatives, as well as websites, including product catalogs. MKS Inc. was formerly known as MKS Instruments, Inc. and changed its name to MKS Inc. in May 2025. The company was incorporated in 1961 and is headquartered in Andover, Massachusetts.

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