Chinese e-commerce company Alibaba Group Holding Ltd is planning to launch its New York stock market debut in the week of Sept. 8, a person briefed on the matter told Reuters on Saturday. The much-anticipated sale or initial public offering (IPO) could raise more than $20 billion, making it the biggest technology listing in the United States. Securities and Exchange Commission (SEC) to kick-off the listing, the person said, adding that the date was still a moving target.