Shandong Hi-Speed (HKG:0412) said there were no undisclosed matters that would warrant an unusual movement in its stock price, according to a Hong Kong bourse filing Friday.

The company said having made relevant inquiries, there were no developments that needed to be announced to the market and that its business operations were continuing as usual.

Shandong Hi-Speed more recently flagged a high concentration of shareholding in the firm's shares following a request from the Hong Kong Stock Exchange.

Shares of the investment firm gained over 16% in midday trade Monday.