Valuation reckoning: By June, a disappointing outlook from US chipmaker Broadcom triggered the first major cracks in the rally . Even when SK Hynix delivered strong earnings, analysts noted that "in today's AI market, strong is no longer enough" — investors demanded additional catalysts .
Fed policy jitters: Shifting expectations around US interest rates rattled the AI rally, with semiconductor stocks hit hardest and South Korea's KOSPI plunging over 4.5% in a single June session .
Concentration risk: South Korea and Taiwan had become hyper-concentrated in a handful of AI chip stocks, making them acutely vulnerable to any reassessment of the AI narrative, a risk highlighted by multiple analysts .
South Korea's KOSPI, which had been the world's best-performing stock market in 2026, entered bear territory by early July, falling 20% from its June peak, then extended losses to a 31% decline from the June high by early August . The KOSPI tumbled nearly 5% in a single session on July 7 as chipmakers slumped , then plunged for a second straight session on July 29 in what was described as a "record-breaking rout" . Taiwan's tech-heavy market suffered similarly severe drawdowns, with foreign investors dumping positions en masse .
Brief, violent snap rebounds occurred — South Korea staged its "sharpest reversal on record" on July 31 — but were followed by renewed selling . One market participant described the market as trading "as if it has bipolar disorder, swinging from panic to euphoria almost overnight" . Global semiconductor stocks lost over $1.3 trillion in market value within 24 hours at one point, triggering one of the biggest market sell-offs in recent history .
Foreign investors pulled a net $137.36 billion from Asian equities across seven markets in the first half of 2026, the fastest six-month outflow in LSEG data since 2010 . The scale by country was staggering:
In June alone, emerging market equity outflows totaled $46.1 billion, led by Korea and Taiwan . That month saw $30.5 billion pulled from South Korean stocks alone — the biggest outflow in over 25 years — and $18.3 billion from Taiwan .
The selloff was paradoxically driven by the success of the AI rally: foreign investors were forced to trim their biggest winners to rebalance portfolios, turning "crowded trades" into a violent unwind .
Asia-focused fundamental long-short hedge funds suffered a record monthly loss in July. According to a Goldman Sachs prime brokerage note, these funds fell 18.6% on average through July 28, giving back 21 percentage points of their year-to-date gains from a peak of +40% on July 22 . Goldman Sachs said crowded AI bets that fueled first-half gains were "driving outsized month-to-date drawdown," adding that funds with higher exposure to AI themes suffered steeper losses .
Stabilization signals began to emerge by early August. On August 4, Asian stocks edged higher as AI shares showed tentative stabilization, with gains in Australia and South Korea offsetting weakness elsewhere . The KOSPI rallied sharply on July 31, logging its biggest single-day reversal on record, driven by bargain-hunting in Samsung and SK Hynix . China's A-share tech sector attracted bullish calls from domestic brokerages like Citic Securities, who cited strong local fundamentals as a buffer and suggested the sell-off was "only a correction" .
Expert advice from major institutions:
The bottom line: The consensus among major banks in early August 2026 was that the AI investment cycle remains structurally intact, but extreme valuations, leverage, and concentration had created a violent correction that was likely not over in a straight line. Experts advised focusing on fundamental earnings delivery rather than narrative-driven momentum .