With the domestic stock market booming last year, market alerts surpassed 3,000.
According to the "2025 market alerts and rapid market change inquiry disclosures operations status" materials released by the Korea Exchange (KRX) Market Surveillance Committee on the 27th, last year's market alerts totaled 3,026, up 302 (11%) from the previous year. That is the highest level since 2020 (7,930) when COVID-19 broke out.
Market alerts are a system that gives advance notice of unfair transactions or abnormal surges. They are divided into three levels: investment caution, investment warning, and investment risk. Investment caution issues are designated for one day, and investment warning issues are designated when the share price rises 60% over five trading days or more than 100% over 15 days. If the share price surges further and an issue is designated as investment risk, margin trading is suspended.
By type, there were 2,598 investment cautions, 395 investment warnings, and 33 investment risks.
Specifically, "pre-announcement of investment warning designation" accounted for the largest share with 772 cases (30%). "Excessive same-day buying by a small number of accounts in issues that rose over 15 days" increased 85% to 432 cases (16%).
Among investment warnings, "short-term surge," which is designated when a stock rises 60% over five days, was the most common with 171 cases (43%). Cases designated for "ultra-long-term rise & unsound factors" jumped 286% from the previous year to 105 (27%).
Investment risk designations rose 120% from the previous year to 33. "Ultra-short-term surge (3 days)" accounted for the largest share with 20 cases (61%).
The Korea Exchange (KRX) said, "After market alerts were designated, the magnitude of price increases eased or turned to slight declines, showing stabilization," adding, "It confirmed the function of preventing price overheating caused by speculative transactions such as short-term surges, themes, and unsound trading."