The 40 largest US industrial staffing firms — those with $100 million or more in revenue — generated $24.1 billion in US industrial staffing revenue during 2017, according to a new list released by Staffing Industry Analysts.

Together, the firms represented 72% of the $33.6 billion industrial staffing market in the US. It’s the largest staffing segment, in terms of revenue.

In addition, the report listed the 40 largest firms by revenue and market share. And the five largest industrial staffing providers in the US are:

1. EmployBridge Holding Co.: $2.60 billion, 8% market share
2. Express Employment Professionals: $2.59 billion, 8% market share
3. TrueBlue: $2.26 billion, 7% market share
4. Aerotek (Allegis Group): $2.07 billion, 6% market share
5. Randstad: $1.87 billion, 6% market share

The report also noted seven firms that grew to more than $100 million in US industrial staffing revenue, appearing in this year’s report but not on last year’s: CorTech, Hire Dynamics, Impellam Group, Premier Employee Solutions, PrideStaff, Snelling Staffing and SURESTAFF.

Corporate members of Staffing Industry Analysts can download the full report will all 40 firms listed.