The top four firms in Architectural Record’s yearly ranking held tight to their places from 2016. AECOM, Perkins+Will, and Jacobs followed San Francisco–based Gensler, which clinched the No. 1 spot for the sixth year in a row, seeing more than $1.19 billion in revenue—an increase of more than $100 million since 2015.

The annual list, compiled by RECORD’s sister publication Engineering News-Record, ranks companies by their architectural revenue from the prior year, as reported to ENR by firms that choose to participate. Gensler co-CEOs Andy Cohen and Diane Hoskins noted the growing importance of virtual, augmented, and mixed-reality platforms, which they say “are having a real impact on the design process, helping our designers innovate for our clients, and our clients more effectively visualize and experience their designs in real time.”