The Zhitong Finance app learned that on Monday, the stock price of GSIW.US (GSIW.US), a sub-initial stock, plummeted, and the stock rose more than 150% on the first day of listing. As of press release, the stock fell more than 18% to $8.35. The company issued 2.5 million shares at $4 (the lower end of the $4 to $5 range), raising $10 million.

Yiying Securities is a financial services company that provides placement and underwriting services, securities trading and brokerage services, and asset management services in Hong Kong. The company operates through subsidiaries I Win Securities and I Win Asset Management.