Yunnan Lincang Xinyuan Germanium Industry (SHE:002428) experienced an unusual stock movement for three consecutive trading days, but its operations remain normal, according to a Shenzhen bourse filing on Thursday.
The company's closing share price jumped 20% between Monday and Wednesday, higher than the threshold set by the bourse.
The company's probe found that it has no significant disclosure or announcement that could have affected its stock price.
The Chinese germanium miner's shares jumped 6% during the afternoon trade.