The firm is publicly traded on the Milan Stock Exchange and is a constituent of the S&P/MIB index. Atlantia's largest single shareholder with around 38% of the company is Sintonia, an investment vehicle of the Benetton family.
The subsidiary Autostrade International of Virginia O & M, Inc. was formed in 1993 to operate the Dulles Greenway in the U.S. state of Virginia.