AEIS vs OSK Comparison

Advanced Energy Industries Inc provides precision power conversion, measurement, and control solutions. The company designs, manufactures, sells, and services power electronics conversion products that transform raw electrical power into controllable, usable power for complex equipment. It operates in one reporting segment, Power Electronics Conversion Products, serving the Semiconductor Equipment, Data Center Computing, Industrial and Medical, and Telecom and Networking markets. Its products include Plasma Power Products, AC-DC Power Supply Units, DC-DC Converters, High Voltage solutions, SCR Power Controllers, and Sense and Measurement solutions. The company operates in the United States, Asia, Europe, and other regions.

Oshkosh is a leading maker of access equipment, specialty vehicles, and military trucks. It serves diverse end markets, including postal, firefighting, refuse/recycling collection, aviation, and construction. It is typically the market share leader or No. 2 player in North America, or even the global leader in the case of its JLG aerial work platform business. The transport segment is a leading provider of light trucks to the military and vehicles to the Postal Service. The vocational segment, featuring brands such as Pierce, AeroTech, and Volterra, offers purpose-built vehicles and equipment to municipalities. The company reports three segments—Access equipment (45% of revenue), Vocational (35%), and Transport (20%) on 2025 revenue of $10.4 billion.