The Chase Sapphire Reserve credit card was one of the hottest product launches in 2016 enthusiastically received by millennial consumers, a group that had previously eluded JPMorgan Chase and its competitors. Harvard Business School professor Shelle Santana discusses her case, “Chase Sapphire: Creating a Millennial Cult Brand” — how protagonists Pam Codispoti and Eileen Serra shifted their focus to retaining customers attracted by the one-time signup bonus of 100,000 reward points and on acquiring new customers now that the bonus had been reduced.