BEIJING - Lock-up shares worth 32.6 billion yuan ($5.34 billion) will be eligible for trade next week on two major stock exchanges in the Chinese mainland.

According to calculations by Southwest Securities, some 4.48 billion shares will become tradable, accounting for 1.14 percent of lock-up A shares on the Shanghai and Shenzhen stock exchanges.

A total of 13 listed companies on the two bourses will see lock-up shares released to capital markets.

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 companies with non-tradable shares becoming tradable next week, China Shipbuilding Industry Company is highest valued with its non-tradable shares worth 18.28 billion yuan.

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