Marc Holliday is the Chairman and CEO and a director of SL Green Realty, Manhattan’s largest office landlord.

As of March 31, 2021, SL Green held interests in 84 buildings totaling 37.8 million square feet, with a particularly large footprint in Midtown. There, SL Greens holdings include 1350 Avenue of the Americas, 625 Madison Avenue, 810 Seventh Avenue and One Vanderbilt, among many others. Its tenant roster reads like a Who's Who of corporate America, including major banks, publishing houses and law firms.

Holliday has overseen many of these acquisitions and tenant leases since his ascent to the top spot in January 2004, shortly after which he repositioned the firm to be more aggressive in its deal-making.

He joined SL Green as its chief investment officer in 1998.

Holliday earned a business degree from Lehigh University and a masters in real estate development from Columbia.