Of the 88 listed affiliates of the major business groups, only 17 affiliates made a public disclosure of their governance structure as of September, according to the report by the Daishin Economic Research Institute.
The nation's stock exchange operator maintains that listed firms should disclose their governance structure to help win investors' confidence, but it is not mandatory.
The 17 firms included 7 affiliates of Hyundai Motor Group and 7 Samsung Group firms.
No listed affiliates of GS Group, Hyundai Heavy Industries, Hanjin Group or Doosan Group made such a disclosure, the report showed.
Ahn Sang-hee, a researcher at Daishin, said in the report that the Korea Exchange needs to consider requiring listed affiliates of chaebol to make public disclosures on their governance structures. (Yonhap)