HONG KONG (Reuters) - Chinese e-commerce giant Alibaba Group has opened the trading books for its $13.4 billion Hong Kong listing, two sources with direct knowledge of the process told Reuters on Wednesday.

The institutional bookbuild will run for a week and the stock is expected to be priced on around Nov. 20, they said.

The people could not be named because the information has not yet been made public. Alibaba stock is due to start trading the week of November 25.