Janus Henderson CEO, Richard Weil, addressed Bill Gross' fund performance in an interview with CNBC's "Worldwide Exchange. ": The boss of influential bond investor Bill Gross told CNBC on Thursday that the billionaire guru "has been wrong and wrong badly" this year. Gross is the portfolio manager of Janus Henderson Global Unconstrained Bond Fund, which suffered more than $200 million in redemptions last month, according to Bloomberg, lowering assets to $1.25 billion from $2.24 billion in February. The fund is down 7 percent this year and ranks in the last percentile of funds in its category, according to Morningstar.