mumbai midsized private sector lender yes bank today entered the unsecured portfolio of credit segment by tying up with american express under the arrangement the fourth largest private sector bank by balancesheet will offer premium american express cards featuring the logos of both the partners however the card offering is limited to just seven cities the bank said in a statement on the new initiative yes bank managing director and chief executive rana kapoor said this is part of the banks commitment to offer comprehensive retail offerings and credit cards are a natural extension of this strategy and will constitute an important part of our payments portfolio