Lock-up shares worth 29.8 billion yuan (4.87 billion U.S. dollars) will become eligible for trade this week in China.

The volume is a rise from the 20.2 billion yuan's worth of lock-up shares traded from Feb. 24 to 28, according to the Shanghai and Shenzhen stock exchanges.

Altogether, 22 listed companies on the two stock exchanges will see their lock-up shares released onto capital markets from March 3 to 7.

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.