The KRX may temporarily suspend trading of a certain issues if required for protection of investors and market control. That is, it may suspend trading of such issues as are radically changing or are expected to be changing in stock price and/or trading volume due to rumors related to existence of listed companies like nonpayment of bill or check/transaction suspension or prohibition with banks/suspension of whole or partial business.
Resumption of trading starts after 30 minutes from results of inquired disclosure for interruption. However, resumption of trading is done from next day if the disclosure is made after 14:30. Resumption might be postponed if relevant rumors are not cleared after the disclosure or contents of the disclosure meet criteria of delisting or causes of nomination of administrative issue.