Valued at a market cap of $31.3 billion, State Street Corporation (STT) is a leading financial services and bank holding company headquartered in Boston, Massachusetts. Founded in 1792, it is one of the oldest financial institutions in the United States. The company primarily operates through its subsidiary State Street Bank and Trust Company, which is among the world’s largest custodian banks. Companies worth$10 billion or more are generally described as “large-cap stocks,” and STT perfectly fits that d ...