BEIJING, July 27  -- Lock-up shares worth 13.9 billion yuan (2.26 billion U.S. dollars) will become eligible for trade this week in China.

Nine listed companies on China's Shanghai and Shenzhen stock exchanges will see a total of 642 million lock-up shares released onto capital markets from July 28 to Aug. 1, according to data from Southwest Securities.

Shenzhen-listed Shijiazhuang Yiling Pharmaceutical Co., Ltd. will see 323 million lock-up shares released with a total value of 9.64 billion yuan.

The company's share price closed 1.81 percent higher to reach 29.8 yuan per share during Friday's trading.

Under the mainland's market rules, major shareholders of non-tradable stocks are subject to one or two years of lock-up before they are permitted to trade.