CLS vs PAYX Comparison

Celestica Inc offers supply chain solutions. The company has two operating and reportable segments: Advanced Technology Solutions (ATS) and Connectivity & Cloud Solutions (CCS). The ATS segment consists of the ATS end market and is comprised of the Aerospace and Defense, Industrial, health tech, and Capital Equipment businesses. Its Capital Equipment business is comprised of the semiconductor, display, and robotics equipment businesses, and the CCS segment consists of Communications and Enterprise end markets, The Enterprise end market is comprised of its servers and storage businesses. The company generates a majority of its revenue from the Connectivity & Cloud Solutions segment.

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.