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.

Environmental Systems Corporation is the leading supplier of stack emissions reporting software.

Spectrum Systems, Inc. engages in the design, manufacture, and supply of standard and custom-engineered continuous emission monitoring (CEM) systems.

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.

Radisson Hotel Lansing at the Capitol