SIA’s 2020 list of largest IT staffing firms in the US comprises 55 companies with more than $100 million in IT staffing revenue, up from 50 on last year’s list. The list was released on Friday.

Added together, these firms generated $23.3 billion in IT staffing revenue. In addition, the 55 firms represented 72% of the market share for IT staffing in 2019, the year measured in the report. That’s up from 67% among firms on last year’s list, which was based on 2018 revenue.

The five largest firms on the list of Largest IT Staffing Firms in the US, along with their 2019 IT staffing revenue:

1. TEKsystems (Allegis Group): $4.05 billion

2. ASGN: $2.19 billion

3. Insight Global: $1.92 billion

4. Randstad Technologies: $1.19 billion

5. Kforce: $1.04 billion

The list’s five largest firms were unchanged from the previous year and garnered 32% of the market share in 2019, also unchanged from 2018.

Six firms are new to the list this year: BG Staffing, Epitec, Icon Information Consultants, Matlen Silver, Next Level Business Services and System Soft Technologies.

Corporate members of Staffing Industry Analysts can download the report with the full list.