The combined value of lock-up shares eligible for trade on China's stock market this week will surge from the previous week, according to China's stock exchanges.

From Monday to Friday, [Hong Kong Company Registration Guide]24 listed companies in Shanghai and Shenzhen stock exchanges will see shares worth 33.5 billion yuan ($5.45 billion) released to the market after lock-up agreements expire.

The amount is much higher than a total value of 23.4 billion yuan that became tradable during the previous week.

Under China's market rules, [Businesses Registration]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.

A surge in newly unlocked shares will have some downward pressure on the market as it means an increase in stock supply.