Sue Gross, who has featured in many of her husband's widely followed investment outlook letters, filed a petition on Nov. 22 in Los Angeles County Superior Court.

She is represented by celebrity divorce lawyer Laura Wasser, according to the court document. Wasser could not be immediately reached for comment.

Seth Lubove, a spokesman for Bill Gross, declined to comment on the divorce petition.

Once known as the "Bond King," Gross left Pimco in September 2014, eight months after second-in-command Mohamed El-Erian quit after the two clashed over how to run the firm.

Gross, with a net worth of $2.4 billion, according to Forbes, sued the firm and its parent Allianz SE (>> Allianz SE) for $200 million, saying a "cabal" of executives drove him out of the bond fund giant he helped found.

After leaving Pimco, Gross joined Janus Capital Group Inc (>> Janus Capital Group Inc), where he runs the $1.7 billion Janus Global Unconstrained Bond Fund.

(Reporting By Jennifer Ablan and Dan Levine; Editing by Bill Rigby)

Stocks treated in this article : Janus Capital Group Inc, Allianz SE