TriNet Group

TriNet Group

TriNet Group was founded in 1988 as a provider of HR outsourcing solutions for small businesses, evolving into a publicly traded PEO (NYSE: TNET) that went public in 2014. The company’s leadership is headed by CEO Mike Simms, who joined in 2021 from Aon, bringing experience in human capital and benefits consulting. The firm’s core offering is co-employment — TriNet becomes the legal employer of record for client employees, handling payroll tax administration, health benefits procurement, workers' compensation, and regulatory compliance. TriNet serves more than 20,000 clients across industries including technology, professional services, and healthcare, with geographic concentration in the United States. The firm does not disclose a separate investment portfolio or AUM as it operates as a services company rather than an asset manager. TriNet reported $4.9 billion in total revenue for fiscal year 2023 (per the company's 10-K filing with the SEC, February 2024), derived primarily from client payroll pass-through and service fees. The firm employs approximately 3,500 people, supporting administration from its Dublin, Ohio headquarters and additional US service centers. It does not maintain a separate foundation or investment vehicle. TriNet’s structural differentiator is its co-employment model, which lets clients transfer legal employer liability while retaining day-to-day control of their workforce. This architecture creates a recurring revenue stream tied to payroll volume, insulating the firm from typical investment cycles. The PEO model also gives it a regulatory moat — it must remain licensed and audited by state departments of insurance in 50 states, a barrier that limits new entrants.