Jan. 20 (Bloomberg) -- Bloomberg View columnist Barry Ritholtz interviews Charles D. Ellis, who founded the international strategy consulting firm Greenwich Associates in 1972. He now serves as an investing consultant to large institutional investors, government organizations and wealthy families. His latest book is “The Index Revolution.” This commentary aired on Bloomberg Radio. See omnystudio.com/listener for privacy information.

Jan. 6 (Bloomberg) -- Bloomberg View columnist Barry Ritholtz interviews Dana Telsey, chief executive officer and chief research officer of Telsey Advisory Group (TAG). In 2015, Ms. Telsey also formed Telsey Consumer Fund Management LP, an asset management firm that manages a long/short hedge fund investing in consumer-based companies. This commentary aired on Bloomberg Radio. See omnystudio.com/listener for privacy information.