BEIJING, Feb 23 (Reuters) - Alibaba's Taobao China Software will sell its 20% stake in Chinese retailer to another Alibaba affiliate, Hangzhou Haoyue Enterprise Management for 2.8 billion yuan ($389 million), said in a filing on Friday.

The valuation of the Suning stake is far smaller than the $4.6 billion the Chinese e-commerce giant paid for it in 2015, representing a roughly 90% loss.

The Alibaba-owned South China Morning Post newspaper reported in December that Alibaba had transferred shares in at least seven listed companies including YTO Express and Focus Media to Hangzhou Haoyue Enterprise Management, a vehicle it created in October.

Alibaba did not immediately respond to a request for comment on the reasons behind this move.

The company is undergoing the largest restructuring in its 24-year history and said earlier this month it was looking to sell some of its traditional physical retail businesses.

($1 = 7.1979 Chinese yuan renminbi) (Reporting by Ethan Wang, Ella Cao and Brenda Goh; editing by Jason Neely and Susan Fenton)