 Japanese e-commerce firm Rakuten Inc OTC: RKUNF OTC: RKUNY is divesting an 8.32 stake to postal and banking company Japan Post Holdings Co Ltd OTC: JPHLF OTC: JPPHY, expanding a logistics tie-up to counter peers like Amazon.Com Inc NASDAQ: AMZN, Reuters reports. Rakuten plunged to an operating loss in 2020 as it battled Amazon in e-commerce and took on Japans cash-rich telecoms with its mobile network. 