Capital One (COF) to Migrate Millions of Discover Cards on July 27

On July 27, Capital One (COF) will transition millions of Discover credit cards to its platform, with the migration continuing in waves into early 2027. The move raises the question of whether Capital One can upsell Discover customers on its travel, entertainment, and offers ecosystem without losing them. Cardholders keep their card numbers and no-annual-fee terms, and Discover branding remains for now. How smoothly the migration goes could shape investor confidence in COF's ability to retain customers and grow revenue from the Discover acquisition.