MKS Instruments
MKS Instruments, Inc. is an American process control instrumentation company. It is headquartered in Andover, Massachusetts. History. MKS Instruments was founded in 1961 as a provider of products and technologies used to measure, control, power, and monitor critical process parameters of advanced manufacturing processes. In 2001, the company acquired Emerson Electric's ENI Division which makes solid-state RF and DC plasma power supplies, networks and instruments. In April 2014, Brooks Automation entered into an agreement to sell its Granville-Phillips division to MKS Instruments. MKS Instruments more than doubled their addressable market by acquiring the Newport Corporation  and its subsidiaries, including Ophir Optronics, for $980 million ($1.2 billion inflation-adjusted) in a 2016 leveraged buyout. It acquired Electro Scientific Industries in 2019 and Atotech in 2021. In 2021, MKS Instruments had about 5,400 employees and a market capitalization of about $11 billion. As of 2021, sixty percent of the company's sales are from semiconductor products.