Zhejiang Chengchang Technology (SHE:001270) said there is no undisclosed material information or abnormal changes in its operations that could explain its recent stock movement.
The company's stock posted cumulative price decline deviations exceeding 20% over three consecutive trading days through June 2, according to a Wednesday filing with the Shenzhen bourse.
Shares of the chip manufacturer were up 10% in recent trade.