Lock-up shares worth 22.6 billion yuan (3.7 billion U.S. dollars) will become eligible for trade next week in China.

The volume marks a slight rise from the 20.83 billion yuan from Jan. 13 to Jan. 17, according to information from the Shanghai and Shenzhen stock exchanges.

Altogether, [HongKong Richful  - Hong Kong Company Formation, Offshore Company Incorporation]20 listed companies on the two stock exchanges will see their lock-up shares released onto capital markets next week.

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.

Of all the companies with non-tradable shares becoming tradable next week, Changshu Fengfan Power Equipment Co., Ltd. ranks first with its non-tradable shares worth 3.66 billion yuan.