Alibaba Group Holding Ltd is postponing the start of investor meetings for its initial public offering by about a week to answer questions from the US Securities and Exchange Commission, according to a person with knowledge of the matter.

The Chinese e-commerce giant, which was weighing a plan to market its IPO early this week, now expects the meetings to begin in the week of Sept 8, with tentative pricing on Sept 18 and trading to start the following day, said the person, who asked not to be identified because the information was private.

Alibaba, based in Hangzhou, in Zhejiang province, has been in discussions with the SEC as it seeks regulatory approval of its prospectus. The company has held off rushing the deal after originally targeting an early August trading debut, a person familiar with the matter said in July.