Greektown Casino proudly stands as the only 100 percent Michigan-owned gaming destination in Detroit. The Sault Ste. Marie Tribe of Chippewa Indians, based in Michigan's eastern Upper Peninsula, currently holds a 90-percent interest in the casino, and a group of Detroit residents controls the other 10 percent. The Tribe has committed to making an additional 10 percent of its stock available for sale in the near future.