South Korea's EWY ETF, which tracks the MSCI Korea Index and carries heavy exposure to Samsung Electronics and SK Hynix, exhibited sharp volatility during the week of October 26, 2026, with closes ranging from $152.72 to $165.91 amid semiconductor-driven swings. Record third-quarter results and a $75 billion shareholder return commitment from SK Hynix fueled a 6.6% KOSPI surge on October 28, supported by renewed AI demand optimism, foreign net buying, and expectations around the Federal Reserve's policy path. Subsequent pullbacks on October 29–30 reflected Samsung's muted return plans and broader tech sector caution, with EWY trading near $153 intraday on October 30. These moves highlight how chip cycle momentum, earnings beats, and capital flows continue to dominate near-term price action for the ETF.