South Korea's benchmark Kospi index climbed 12.3% on March 5, 2026, posting its strongest single-day performance in history and reversing a multi-day selloff. The rally lifted tech, materials, and energy sectors, while global risk sentiment improved.
- Kospi index gained 12.3% on March 5, 2026, the largest single-day increase in its history
- Samsung Electronics stock rose 22% amid strong sector-wide momentum
- Technology sector led gains with a 17.2% increase, materials up 14.6%, energy 11.8%
- VIX fell from 31.8 to 18.4, signaling reduced market volatility
- Brent crude (CL=F) rose 3.1% to $89.40 per barrel
- Regional markets followed with Japan’s Nikkei up 5.8%, Taiwan’s TAIEX up 6.3%
South Korea's Kospi index surged 12.3% on March 5, 2026, marking its largest one-day gain ever and vaulting to its highest level since early 2025. The index closed at 3,248.72, following three consecutive days of losses that had erased over 8% of market value. The rebound followed a sharp drop in volatility, with the VIX index falling from 31.8 to 18.4, signaling a rapid de-escalation in investor fear. The rally was broad-based, with the technology sector leading gains, up 17.2%, driven by a 22% surge in semiconductor giant Samsung Electronics. Materials stocks advanced 14.6%, boosted by stronger-than-expected demand signals for industrial metals. Energy stocks rose 11.8%, supported by a modest rebound in crude oil prices, with Brent crude (CL=F) climbing 3.1% to $89.40 per barrel. Market analysts attribute the reversal to a combination of unexpected policy measures, including a coordinated intervention by the Bank of Korea to stabilize liquidity and a diplomatic breakthrough that eased regional tensions. The move also triggered a positive cascade across Asian markets, with Japan’s Nikkei 225 gaining 5.8% and Taiwan’s TAIEX rising 6.3%. The rally has prompted a reassessment of risk exposure across global portfolios. Equity futures in the U.S. and Europe opened higher, reflecting renewed appetite for equities. Investors are now closely monitoring the sustainability of the rebound, particularly in the face of ongoing global inflation pressures and shifting monetary policy trajectories.