Key points
- The Kospi opened Tuesday at 6,769.06, fell 2.8% to 6,614.70 within the first ten minutes, then bounced back to nearly flat, a swing of more than 3% before 9:15am in Seoul.
- Samsung Electronics opened green, up about 0.8% at 9:16am, and SK Hynix was down only 0.4% after crashing 15.4% on Monday. When those two are calm, the index cannot fall far.
- The US June CPI report comes out at 8:30am ET, which is 9:30pm in Seoul, six hours after the Korean market closes. Korea trades all of Tuesday without knowing the number.
The question hanging over Seoul on Tuesday morning was simple: was Monday's 8.95% crash the end of something, or the middle of it? The first fifteen minutes gave both answers. The Kospi opened at 6,769.06, just under Monday's close. Within about ten minutes it dropped to 6,614.70, down 2.8%, and it looked like the selling was picking up right where it stopped. Then it turned. The index climbed all the way to 6,848.39, briefly higher than Monday's close, and by 9:16am it sat at 6,782.77, down only 0.35%. From the morning's low to its high is a move of more than 3%, all before most people in Seoul finished their commute.
The two stocks that matter are calm
Monday's crash was driven by Samsung Electronics and SK Hynix, which fell 10.7% and 15.4% and dragged the whole index into its seventh circuit breaker of 2026. Tuesday morning they are behaving. Samsung opened higher and was up about 0.8% at 256,500 won as of 9:16am. SK Hynix was down just 0.4%. Those two companies are roughly 47% of the Kospi's entire value, so when they are quiet, a crash is mathematically hard to repeat. The smaller Kosdaq index was weaker, down about 1.4%, which says the nerves have not left the market, only the biggest names.
Why the open was still so wild
A 3% swing in fifteen minutes is not a normal open, even for Korea. It is what a market looks like when nobody agrees on the price yet. Monday ended with forced selling from leveraged accounts, the margin loans and leveraged ETFs I wrote about it earlier today, and some of that selling was still finishing at Tuesday's open. Bargain hunters showed up at the same minute. The result was a 234-point gap between the morning's low and high while the two sides found each other.
Korea trades blind today
The bigger reason to not trust this bounce yet is the clock. The US June CPI report, the number Wall Street is bracing for, comes out at 8:30am Eastern time on Tuesday. In Seoul that is 9:30pm, six hours after the Kospi closes at 3:30pm. So Korea spends this entire session trading on hope and positioning, not on data. If the inflation number comes in hot and US chip stocks sell off again Tuesday night, the Kospi does not get to react until Wednesday's open, and this morning's bounce gets tested all over again from the start.
Figures in this article are from the first 16 minutes of Tuesday's session in Seoul, as of 9:16am KST on July 14, 2026 (8:16pm ET Monday), via Naver Finance real-time Korea Exchange data. The market has a full day left and these numbers will move.