Here are the Pittsburgh region's largest private companies

PITTSBURGH — The Business Times annual List of Largest Private Companies drops today, offering a look at the companies in the region generating the most revenue in 2018.

The largest company had just shy of $9 billion in revenue.

The 15 largest private companies collectively totaled $33 billion in revenue, up 13.8 percent over the revenue of those same 15 companies in 2017 sales. Ten companies reached $1 billion in sales, one more than last year and the largest company had just shy of $9 billion.