Churchill owns several operating companies:

TSI Incorporated is an international leader in the design and production of precision measurement instruments.

MSP Corporation is an instrument and equipment company creating products for scientific research and industrial applications.

DICKEY-john Corporation is a provider of systems used in agricultural, public works and analytical markets.

ESC Spectrum is a leading provider of products and services for customers in the Electric Power and Petroleum industries. They help companies meet their air emissions compliance obligations accurately and efficiently by providing products and services in continuous development and backed by robust customer support.

Worthington Tractor Parts and its sister company in Australia, Neil’s Parts, are suppliers of agricultural equipment replacement parts.

Tekran Instruments Corporation is the world leader in the design and supply of trace-level mercury monitoring and analytical instruments.

Churchill Commercial Holdings is a real estate investment firm specializing in the acquisition, management, and disposition of commercial multifamily properties, ranging from 100 to 300+ units.

Churchill Yacht Partners is a provider of luxury yacht charters for an elite clientele, specializing in yachts—power and sail—from 60 to 400 feet.