Now that the priciest U.S. bank merger of the last 15 years has closed, Capital One Financial has begun the process of integrating Discover Financial Services. It will be a marathon, not a sprint.

More than a year after Capital One Financial Corp. announced its $35-billion deal to acquire Discover Financial Services, it received the last federal regulatory approvals to move ahead and has set a ...

Capital One Financial's contentious acquisition of Discover Financial Services has won the regulatory approvals it needs, clearing the path to create the largest credit card lender in the country. The ...

Capital One is moving its Quicksilver and QuicksilverOne Cash Rewards cards from the Mastercard network to Discover and adding a 3% cash-back bonus on grocery and gas purchases. The changes follow ...