It began their operation in 1977 with management of the Louisiana Superdome.

It was one of the largest property management corporations in the world.

[1] SMG was a joint venture in general partnership form with two equal principals, The Hyatt Hotel Company and Aramark Corporation.

Ares Management sold SMG to Onex Corporation in 2017.

In October 2019, SMG and AEG Facilities merged to make a new company called ASM Global.