China Jushi (SHA:600176) recorded an unusual stock fluctuation in three consecutive trading days, but said its operations are running normally, according to a Shanghai bourse filing on Thursday.
Between Monday and Wednesday, the closing price of the fiberglass manufacturer's shares jumped 20%, higher than the threshold set by the bourse.
The company's probe found that it has no significant information that could cause the abnormal stock movement.
The company's shares jumped 7% during the morning trade Thursday.