Bill Gross, who has been running the $1.5 billion Janus Global Unconstrained Bond Fund since leaving Pacific Investment Management Co. last year, is getting a co-manager. Janus Capital Group Inc. on Wednesday said that Kumar Palghat, who worked with Gross at Pacific Investment Management Co. for 10 years, will help run the fund, with Gross staying on as lead manager. Janus also bought a majority stake in Palghat’s firm, Kapstream Capital Pty Ltd, a global unconstrained fixed income manager with $6.6 billion in assets.