Onto Innovation Inc. engages in the design, development, manufacture, and support of process control tools that performs macro defect inspection and 2D/3D optical metrology, lithography systems, and process control analytical software worldwide.

Photronics, Inc., together with its subsidiaries, engages in the manufacture and sale of photomask products and services in the United States, Taiwan, Korea, Europe, China, and internationally.

Ultra Clean Holdings, Inc. develops and supplies critical subsystems, components and parts, and ultra-high purity cleaning and analytical services for the semiconductor industry in the United States and internationally.

Axcelis Technologies, Inc. designs, manufactures, and services ion implantation and other processing equipment used in the fabrication of semiconductor chips in the United States, Europe, and Asia.

Ichor Holdings, Ltd. engages in the design, engineering, and manufacture of fluid delivery subsystems and components for semiconductor capital equipment. It primarily offers gas and chemical delivery systems and subsystems that are used in the manufacturing of semiconductor devices.

Entegris, Inc. develops, manufactures, and supplies microcontamination control products, specialty chemicals, and advanced materials handling solutions in North America, Taiwan, China, South Korea, Japan, Europe, and Southeast Asia.

Kulicke and Soffa Industries, Inc. designs, manufactures, and sells capital equipment and tools used to assemble semiconductor devices. It operates through two segments, Capital Equipment, and Aftermarket Products and Services (APS).

Amtech Systems, Inc. manufactures and sells capital equipment and related consumables for use in fabricating silicon carbide (SiC), silicon power devices, analog and discrete devices, electronic assemblies, and light-emitting diodes (LEDs) worldwide.

Veeco Instruments Inc., together with its subsidiaries, develops, manufactures, sells, and supports semiconductor and thin film process equipment primarily to make electronic devices worldwide.

IPG Photonics Corporation develops, manufactures, and sells various high-performance fiber lasers, fiber amplifiers, and diode lasers used in various applications primarily in materials processing worldwide.

Teradyne, Inc. designs, develops, manufactures, sells, and supports automatic test equipment worldwide. The company operates through Semiconductor Test, System Test, Industrial Automation, and Wireless Test segments.

AXT, Inc. designs, develops, manufactures, and distributes compound and single element semiconductor substrates. It produces semiconductor substrates using its proprietary vertical gradient freeze technology.

Nova Ltd. designs, develops, produces, and sells process control systems used in the manufacture of semiconductors in Israel, Taiwan, the United States, China, Korea, and internationally.