There has never been a purchase of a restaurant chain the size of the sandwich brand Potbelly by a convenience-store chain.

There has never been a purchase of a restaurant chain the size of the sandwich brand Potbelly by a convenience-store brand.

Shares of Fiserv (FI), which sells offerings for things like payment processing, mobile banking and billing to merchants and financial institutions, could also become the S&P 500's SPX worst ...