TOKYO (Standard&Poor's) Nov. 14, 2014--Standard&Poor's Ratings Services today said that its ratings on ORIX Corp. (A-/Stable/--), a Japan-based integrated financial services group, would be unaffected by the company's announcement that it would acquire Yayoi Co. Ltd., a software service provider that targets small enterprises, for about ¥80 billion. ORIX has been stepping up expansion of its business portfolio on the back of a business recovery. It has acquired Dutch asset manager Robeco Groep N.V. and U.S. insurance giant Hartford's Japanese unit, Hartford Life Insurance K.K., and made Daikyo Inc., a Japan-based real estate company, a consolidated subsidiary. ORIX's profitability has been sound partly due to Robeco's contribution. We think the acquisition of Yayoi may strengthen ORIX's