ROK vs PAYX Comparison

With roots tracing back to the early 1900s, Rockwell Automation is the successor to Rockwell International, which spun off its avionics segment in 2001. It is a pure-play industrial automation company that operates through three segments. Its largest segment by revenue, intelligent devices, sells factory floor-level devices such as motors, drives, sensors, relays, and actuators. Its software and control segment sells visualization, simulation, and human-machine interface software and control products such as programmable controllers, computers, and operator terminals. Its smallest segment, lifecycle services, offers digital consulting, engineered-to-order services, and other outsourced services such as remote monitoring, cybersecurity, and asset and plant maintenance and optimization.

Paychex is a technology company providing human capital management solutions, enabling clients to better implement payroll, talent, time, tax, and benefits administration. It has a diverse set of product offerings addressing client needs. Aside from its traditional cloud-based payroll and HCM software offering, which accounts for close to half of total revenue, the company provides outsourcing options. Paychex's administrative service organization and professional employer organization accounts generate over 40% of sales. The balance of revenue is generated through retirement services, insurance solutions, and other products. In fiscal 2025, the company had 800,000 clients and almost 2.5 million worksite employees across its ASO and PEO.