** Asset manager Janus Henderson's JHG.N shares rise 7.8% to $32 premarket

** JHG will manage Guardian Life Insurance's $45 billion fixed-income asset portfolio, the companies announce

** Upon transaction completion, JHG will manage over $147 billion in fixed-income assets

** Guardian will receive JHG stock warrants as part of the deal and has committed up to $400 million of capital for the asset manager's fixed-income business

** Transaction expected to close at the end of Q2 2025

** As of last close, JHG stock down 30% YTD

(Reporting by Arasu Kannagi Basil in Bengaluru)

((ArasuKannagi.Basil@thomsonreuters.com;))