MIR vs GPI Comparison

Mirion Technologies Inc provides products, services, and software that allow customers to safely leverage the power of ionizing radiation for applications that benefit the health, safety, vitality, and technological progress of the human experience. The Company manages its operations through two segments: Nuclear & Safety and Medical. The Medical segment improves the quality and safety of cancer care delivery and supports applications across medical diagnostics and practitioner safety. The Nuclear & Safety segment powers advancements in nuclear energy and critical radiation safety, measurement and analysis applications across laboratories, research and other industrial markets such as defense.

Group 1 owns and operates 32 collision centers and 254 automotive dealerships in the US and the UK, offering 36 brands of automobiles altogether. Slightly over half of the stores are in the US with locations mostly in metropolitan areas in 17 states in the Northeast, Southeast, Midwest, and California. Texas alone contributed 31.6% of new-vehicle unit volume in 2025 and the UK 27.6%. Texas, Massachusetts, and California combined was 45.4%. Revenue in 2025 totaled $22.6 billion. The firm entered the UK in 2007 and has 109 stores there contributing about 26% of total revenue. Group 1 was founded in 1995 and is based in Houston.