KOSPI Tumbles Below 7,300 as Foreigners Sell $9B Over 9 Sessions — Semiconductor Concentration Triggers Fear Spike

The KOSPI, which had surged 80% year-to-date and was knocking on the 8,000 level, tumbled below 7,300 as foreign investors sold for nine consecutive sessions — offloading over 13 trillion won (approximately $9 billion). The VKOSPI 200 (South Korea's fear index) spiked above 70, hitting a year-to-date high. The root cause: three semiconductor stocks accounted for 87% of the KOSPI's entire market cap gain.

The KOSPI is deep in volatility territory just as it was approaching its first-ever close above 8,000. Beginning May 7, when the index first crossed the 8,000 zone on a weekly basis, foreign investors flipped to consecutive net selling. By May 18, nine straight sessions of outflows had accumulated more than 13 trillion won ($8.9 billion) in net selling, and the index broke below 7,300 for the first time since its early-May surge.

The 8,000 Level Trigger: 5% Crash in Under Two Hours

On May 12, the KOSPI opened at 7,953 and briefly touched 7,999.67 — a hair's breadth from the historic 8,000 mark — before collapsing to 7,421 intraday, a 530-point swing in under two hours. The session closed at 7,643.15, down 2.29%. Foreign investors alone sold a net 5.62 trillion won on that single day.

The VKOSPI 200 surged to 70.14, the highest since March 9 (during the U.S.-Iran war spike). Short interest outstanding exceeded 20 trillion won, and securities lending balances broke 180 trillion won for the first time ever.

• Foreign net selling: 9 consecutive sessions (May 7 to May 18)
• Cumulative foreign net selling: 13+ trillion won; retail offset: 13+ trillion won
• VKOSPI 200 peak: 70.14 (year-to-date high)
• Short interest > 20 trillion won; securities lending > 182 trillion won
• KOSPI below 7,300 on May 18 — roughly 8.7% off the intraday high

Semiconductor Concentration: Samsung, SK Hynix, SK Square Drove 87% of Gains

The deeper cause is extreme semiconductor concentration. In May alone, Samsung Electronics surged 29.5%, SK Hynix 46.2%, and SK Square 41.1% — all far outpacing the KOSPI's 18.5% monthly gain. According to Kiwoom Securities, these three stocks accounted for a staggering 87.4% of the KOSPI's total market cap increase.

"There's nothing wrong with the fundamentals — earnings and valuations are fine. But the stocks simply went up too fast in too short a time, and FOMO was intense, so profit-taking urges erupted all at once and triggered a sudden correction."

Han Ji-young, Kiwoom Securities

The selloff was accelerated by reports that President Trump discussed resuming military operations against Iran with his national security team, pushing WTI crude above $99 per barrel. The 30-year U.S. Treasury yield briefly touched 5.0%, and after-hours U.S. semiconductor futures (including Micron) sold off sharply, further dampening sentiment toward Korean chip stocks.

Retail Stepped In: 13 Trillion Won Absorbed, KOSPI Hit a New All-Time High

Despite the foreign selling wave, retail investors were extraordinary buyers. Between May 12 and 14, individuals net-bought roughly 19.5 trillion won, absorbing nearly all foreign outflows. On May 14, the KOSPI actually closed at a new all-time high of 7,981.41, up 1.75%, even as foreign selling entered its sixth consecutive session.

The dynamic reversed sharply on May 18, when a fresh jump in U.S. Treasury yields and renewed oil price pressure pushed the KOSPI below 7,300 as the foreign selling streak hit nine sessions.

Goldman Targets 9,000; JPMorgan Goes to 10,000

Paradoxically, global investment banks are still raising their KOSPI targets. Goldman Sachs upgraded its target from 8,000 to 9,000, saying "it has already delivered one of the most astonishing rallies in the world, but it is not over yet." JPMorgan set a base-case target of 9,000 and a bull-case of 10,000 — the first major overseas institution to put a 10,000 handle on the KOSPI.

• Goldman Sachs KOSPI target: 8,000 → 9,000
• JPMorgan base target: 9,000; bull target: 10,000 (first foreign IB)
• JPMorgan raised Samsung Electronics and SK Hynix price targets on May 18
• "Memory demand has entered a phase of structural growth due to AI investment" — JPMorgan

"Although a short-term correction is possible, for now the market remains resilient thanks to the memory semiconductor cycle and corporate governance reform."

JPMorgan research

The KOSDAQ has lagged in the KOSPI's shadow. While the KOSPI surged 80% year-to-date, the KOSDAQ rose just 28% — a historic performance gap. Some market observers see the KOSPI's pullback as a potential near-term catalyst for rotation into the relatively neglected secondary market.