This article explains, in general terms, how a market disclosure mechanism works. It is educational content, not investment advice, and it does not describe any specific company, security, or current event.
In South Korea, the market often knows how a listed company performed in a given quarter weeks before that company’s outside auditor has finished checking a single figure. That gap between “known” and “confirmed” is not a leak, and it is not an error. It is written into the rules. Korean securities regulation requires listed companies to publish provisional, unaudited earnings, commonly referred to in the market as “jamjeong siljeok” (literally, provisional results), on a fixed schedule, well before the audited financial statements that eventually replace those figures are filed. Understanding how this two-step disclosure works, and what happens when the two sets of numbers do not match, explains why corporate earnings news in Korea often moves ahead of the formal reporting calendar.
Why an early, unaudited number exists at all
A full external audit of a company’s financial statements takes time. Auditors need to verify revenue recognition, inventory valuation, provisions, and dozens of other line items before they will attach their opinion to a set of accounts. If investors had to wait for that entire process to finish before learning anything about a quarter’s performance, there would be a lengthy information vacuum, one that creates room for material facts to leak selectively to analysts, large shareholders, or trading counterparties ahead of the general public. To close that gap, Korea Exchange (KRX), working within the disclosure framework overseen by the Financial Services Commission (FSC) and the Financial Supervisory Service (FSS), requires listed companies to release company-compiled preliminary results as soon as their internal accounting close is finished, rather than waiting for the external auditor’s sign-off. This sits alongside Korea’s broader fair-disclosure regime, which is built around giving all investors access to material information at the same time.
How the reporting timetable actually works
Once a quarter or a fiscal year ends, a listed company’s internal finance team closes the books well before an outside audit firm has completed its review. Korean periodic reporting rules give companies a set window to file their formal quarterly, semiannual, and annual reports (quarterly and semiannual filings are generally due within 45 days of period-end, with the full audited annual report allowed up to 90 days), and those filings are lodged through the DART electronic disclosure system used by Korean regulators. The provisional earnings disclosure is designed to arrive earlier than that: it typically covers headline figures, such as revenue, operating profit, and net income, without the footnotes, segment breakdowns, or formal auditor’s opinion that accompany the eventual audited statements. For companies whose shares are widely held, this earlier release is often the number that first moves market commentary, even though it is explicitly labeled as unaudited and subject to change.
Why the follow-up correction is just as important
Because the preliminary figures are compiled internally and have not yet been reviewed by an outside auditor, they can shift once that audit is complete. Korean disclosure rules address this directly: if the confirmed, audited results deviate from the previously disclosed provisional figures by more than a specified threshold, commonly discussed in market practice as a swing of roughly 30% in operating profit or net income for most companies, with a lower threshold applied to larger, closely watched issuers, the company must file a separate corrective disclosure without delay. That correction is treated as a distinct, material disclosure event in its own right, not a quiet footnote appended to the original announcement.
The result is a system with three moving parts: a fast, unaudited estimate released soon after the period closes, a slower audited version that eventually supersedes it, and a mandatory public flag whenever the two diverge by enough to matter. Recognizing which of the two numbers a piece of Korean earnings news is actually reporting, and whether a correction has since been filed, is a basic but essential step before drawing any conclusion from either figure.
