Lock-up shares worth 35.2 billion yuan (5.71 billion U.S. dollars) will become eligible for trading on China's stock markets during this week's four trading days.
A total of 2.67 billion shares of 27 companies will be tradable on the Shanghai and Shenzhen exchanges, representing 0.64 percent of lock-up shares in China's A share market.
China Avic Electronics Co. is the highest valued company with 16.9 billion yuan of shares coming online in the next few days.
Under market rules, major shareholders of non-tradable stocks are subject to a lock-up period of one or two years before they are permitted to sell their shares.
The benchmark Shanghai Composite Index lost 0.07 percent to finish at 2,039.21 on May 30, the previous trading day.