World shares mostly fell Friday, and South Korea’s Kospi dropped more than 5% in a sharp move that traders in Seoul tracked on glowing screens beside the won and dollar exchange rate. On another monitor at Hana Bank headquarters, investors could see stock prices for South Korean companies linked to Nvidia chief executive Jensen Huang, whose planned visit to South Korea had already drawn attention.
The selloff gave the Ai Bubble a fresh jolt in Asian trading, with the Kospi’s slide standing out as one of the day’s biggest market moves. At the Hana Bank trading room in Seoul, currency traders watched the Korea Composite Stock Price Index alongside the foreign exchange rate, a reminder that equity losses and currency moves were landing at the same time.
Those screens mattered because Huang has become a market-moving figure far beyond the chipmaker he runs. In Seoul, his scheduled trip was important enough to be splashed across a display tied to South Korean companies whose share prices have moved with the global hunger for artificial intelligence chips and the firms supplying them. That made Friday’s drop feel less like an isolated wobble and more like part of a wider reset in how investors are pricing the AI trade.
What remains unclear is what actually pushed the Kospi down so hard. The market move was real and immediate, but the reporting available does not give a single cause, leaving traders to read the fall through the usual mix of global risk aversion, tech-stock swings and the pressure that comes when a heavily watched index breaks lower by more than 5% in one session.
There was also a second layer to the day’s market mood: U.S. benchmark figures were still in view, including a board above the New York Stock Exchange trading floor that had shown the Dow Jones industrial average closing number two days earlier, on Wednesday. But the sharpest signal on Friday came from Seoul, where the Kospi’s slide and the screens built around Huang’s visit showed how quickly global technology sentiment can spill across markets.
For investors, the next question is whether Huang’s South Korea visit calms the trade or adds to the scrutiny around it. For now, the day’s message was simpler: a major Asian index buckled, traders were watching the currency as closely as the stock market, and the Ai Bubble debate moved from theory to the ticker tape.

