BEIJING - Lock-up shares worth about 81.6 billion yuan ($12.55 billion) will become eligible for trade on China's stock market?this?week.

The value is larger than 28.9 billion yuan and 15.3 billion yuan respectively in the past two weeks.

More than 6.05 billion shares from 64 companies will become tradable on the Shanghai and Shenzhen stock exchanges from April 25 to 29, according to brokerage Southwest Securities.

Hua Xia Bank Co will see the unlocking of 2.9 billion non-tradable shares worth about 29.41 billion yuan on Tuesday, the largest group of shares to hit the market during the week.

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