Lock-up shares worth about 68 billion yuan (10.3 billion U.S. dollars) will become eligible for trading on the Shanghai and Shenzhen stock exchanges in the coming week.
The amount is around 188 percent up from the previous week, according to information service provider Wind.
Some 3.8 billion lock-up shares of 38 listed companies will become tradable from Nov. 20 to 24. DMG Yinji, a media and entertainment company, is set to unlock 1.3 billion shares worth around 16.5 billion yuan, the largest from a single company next week.
Under China's market rules, major shareholders must wait one to two years before they are permitted to sell their shares.
Chinese shares closed lower Friday. The benchmark Shanghai Composite Index fell 0.48 percent to 3,382.91 points. The Shenzhen Component Index lost 2.12 percent to close at 11,292.93 points.