Aeon Co. said it will buy the remaining shares in Daiei Inc. to make the struggling supermarket chain a wholly owned subsidiary next year, as part of efforts to turn around the company.

Aeon, Japan's biggest retailer and the biggest shareholder in Daiei, possessing a 44.15 percent stake, aims to acquire the remainder by offering a share swap early next year.

It said Wednesday that Daiei will be delisted from the first section of the Tokyo Stock Exchange on Dec. 26.