Hakuhodo DY GroupIntegration
October 29, 2001 The three agencies announce first business alliance
Hakuhodo
Daiko
Yomiko
December 2, 2002 Integration plan announced
October 1, 2003 Business integration through creation of joint holding company
(Pure holding company)
Hakuhodo
Daiko
Yomiko
December 1, 2003 Spinning off and integration of media and content units group
(Pure holding company)
Hakuhodo
Daiko
Yomiko
HDYMP