April 6 (Reuters) - Japan's Dai-ichi Life 8750.T will buy a 15% stake in Australian insurer Challenger CGF.AX from MS&AD Insurance Group 8725.T for 80 billion yen ($544.59 million), the Nikkei reported on Monday.
($1 = 146.9000 yen)
(Reporting by Aaditya Govind Rao in Bengaluru; Editing by Alexandra Hudson)
((Aaditya.GovindRao@thomsonreuters.com;))