OSK vs PNW Comparison

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.

Pinnacle West is a holding company whose principal subsidiary is Arizona Public Service, a vertically integrated electric utility serving approximately 1.4 million customers across a 35,000-square-mile territory in central Arizona, including the Phoenix area. APS owns or leases 6.5 gigawatts of power generation capacity, including a 29% ownership stake in one of the largest nuclear plants in the US, Palo Verde. Half of the electricity that APS supplies to customers comes from clean energy sources, including nuclear.