What it is
A block deal moves a large holding to buyers arranged in advance rather than through the order book, so the seller avoids pushing the price down during the session and buyers get a few percent discount. Books are usually built in the evening and closed before the next open.
What to check
Sales by 5%+ holders appear in Korean major-holding reports, and sales by officers or major shareholders in insider ownership filings, within days. If the company sold treasury shares, a treasury disposal filing comes first.
What to keep in mind
Shares placed at a discount often weigh on the price the next day, but the seller's reason and remaining stake matter. Confirm discount and size in the DART filing rather than press reports.
See related filings and news data →
This explanation is general information, not investment advice. Rules reflect September 2026 and may change; check official exchange and broker notices.