Global Stock Markets Plunge Amid Tech Sell-Off

Global stock markets experienced significant declines on Tuesday, primarily driven by technology companies. While tech firms specializing in artificial intelligence and chip production were previously propelling markets to new heights, their recent downturn has greatly impacted market indexes.

A sell-off initiated in the United States on Monday spread globally, hitting Asian markets notably hard. Major U.S. tech companies like Alphabet and Amazon continued to decline in premarket trading on Tuesday. SpaceX, another key player, also saw its stocks slide after an initial jump during its trading debut. The company’s value dropped over 20% within three trading sessions but remained above its initial public offering price.

The most pronounced drop in Asia occurred in South Korea, which had been the best-performing stock market globally since the beginning of 2025. The country’s Kospi index fell by 10%, prompting a 20-minute trading halt by the exchange operator. The recent surge in South Korean stocks was chiefly powered by its two largest memory chip manufacturers, Samsung Electronics and SK Hynix. These companies produce semiconductors essential for AI systems. Their stocks plummeted by more than 12% on Tuesday.

Alexander Redman, chief equity strategist at CLSA, noted that such dramatic one-day drops often lead to panic. However, they are becoming more routine in today’s markets. “It’s unnerving to witness such volatility,” Redman remarked at an investor conference in Seoul. “It just feels very frothy.”

The sell-off occurring in South Korea reflects broader market trends where rapid swings have become common, fueled by retail investors keenly trading on momentum.