PIMCO headquarters building in Newport Beach, Calif.

Dan Ivascyn, who succeeded Bill Gross as Pimco's new chief investment officer nearly a year ago, acknowledges that life at the firm is now "less glamorous."

Unlike Gross, who was widely known as "the Bond King" and has rarely been away from the headlines in both mainstream and social media in recent years, Ivascyn is rarely on TV and doesn't tell the world about any big investment calls through Twitter.