Online Q&A platform Zhihu has priced its U.S. initial public offering (IPO) at the bottom of an indicative range, raising $522.5 million, according to people familiar with the matter.

The company is offering 55 million ADSs at $9.50 per share. Its indicative range of each share is $9.50 to $11.50.

In addition to the IPO, Zhihu is also arranging a private placement, in which Alibaba, JD.com and Tencent Holdings have agreed to buy $250 million in shares.

Zhihu will begin trading on the New York Stock Exchange on Friday, under the ticker symbol ZH.