Tops isn't a bad chain. We have two of them in Ithaca, but they don't come close to Wegman's. Now thats a great supermarket.
Today the supermarket industry is run by a few players who own most brands:
Penn Traffic: (a public company)
Big Bear Plus
Delhaize America: (owned by Delhaize in Belgium)
Kash n' Karry
Albertsons: (a public company)
AholdUSA (owned by Royal Ahold N.V. in The Netherlands)
Stop & Shop
GIANT Food Stores
freshgo by Giant
The Great Atlantic & Pacific Tea Company (public)
Ultra Food & Drug
The Barn Markets
Other large chains include:
Publix, Winn-Dixie, Piggly Wiggly, Dagostinos, Wegman's, Shaw's, Giant Eagle, and Harris Teeter.