South Korea · Samsung · Federal Reserve (FED) · CryptoSlate
The world’s hottest AI stock market just swung nearly 17% in two days
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After becoming 2026's best-performing major stock market on the back of an AI chip boom, South Korea's KOSPI suffered one of its sharpest drops on record and then rebounded almost as fast.
Key facts
- The June 5 jobs report knocked Bitcoin to a 2026 low near $59,100, wiped out more than $1.7 billion in leveraged crypto bets in a day, and extended a record run of withdrawals from US funds that hold
- KOSPI climbed about 92% in 2026 on demand for AI hardware, rising chip prices, and the race to build data centers, with Samsung and SK Hynix supplying roughly 72% of the gains
- Chipmaker Broadcom then forecast weaker AI sales than Wall Street wanted and fell about 13%, dragging the main US chip index down more than 10% on Friday
- The AI build-out is itself becoming an inflation risk for the Fed, with AI spending nearing $800 billion in 2026 and pushing up costs for power, chips, and labor
Summary
01 South Korea's KOSPI fell 8.29% Monday, then rebounded 8.18% Tuesday after a market-halting slump. 02 The swings exposed how concentrated the AI trade is, with Samsung and SK Hynix driving most of the index's gains and losses. 03 Investors still face the Fed question: strong US jobs data, inflation, and June 16-17 rate signals could keep pressure on AI-linked assets. The 48-hour swing shows how concentrated the global AI trade has become, and why investors in everything from chip stocks to Bitcoin are exposed to sudden shifts in Federal Reserve policy.