Orient Securities (SHA:600958, HKG:3958), also trading as DFZQ, is looking to buy back between 18.52 million shares and 37.04 million shares for between 250 million yuan and 500 million yuan, a Tuesday Hong Kong bourse filing said.

The shares, which will be repurchased within three months of board approval at 13.5 yuan apiece, represent 0.22% to 0.44% of the Chinese investment bank and brokerage firm's issued share capital.