Altogether, 17 listed companies on the Shanghai and Shenzhen stock exchanges will see their lock-up shares released to the equity markets after their lock-up periods become due in the week from Aug. 5-9.

Under China's market rules, major shareholders of non-tradable stocks are prohibited from trading their shares during the lock-up periods, usually one or two years after the stock IPO, to protect retail investors.

Shenzhen O-film Tech Co., Ltd., an optical component producer, will see non-tradable shares worth 5.2 billion yuan become tradable on Monday, the largest amount of such shares to hit the market in the week.