Despite Aflac’s buy-and-hold strategy for its $125 billion portfolio, the insurer’s new chief investment officer, Brad Dyslin, says he isn’t standing still. Dyslin, who was one of the first people to join Aflac’s 150-person investment team almost 11 years ago, stepped into the CIO role in January when Eric Kirsch retired. “I hate the term buy-and-hold because it implies a sort of lazy indifference to managing the portfolio,” Dyslin said.