The rally reflects a broadly risk-on tone across Asian equities, with chip-linked names in Tokyo and Seoul benefiting most directly from renewed AI demand optimism. The stronger won alongside the Kospi's gains points to fresh foreign inflows into Korean assets, a combination that typically extends to a firmer regional risk backdrop supportive of the Australian dollar given its own sensitivity to Asian growth and commodity demand sentiment. USD/JPY has been little changed on the day itself, suggesting the yen move is more a function of last week's BOJ repricing than a fresh catalyst, while investors remain focused on crude prices, bond yields and Middle East developments as the swing factors that could quickly reverse the risk-on mood.---Chip stocks are driving a broad Asian equity rally, with Korea's won hitting its strongest level in almost two years as the region rides a wave of AI optimism.Summary:Japanese stocks rose in early trade on continued hopes for AI-related demand and signs of US economic strength, with chip-related names leading gainsSoftBank Group rose around 6%, Tokyo Electron gained roughly 4.5% and Lasertec climbed about 7%The Nikkei Stock Average rose around 1.8% to trade near 66,150The dollar traded little changed against the yen, around 156South Korea's Kospi jumped roughly 3%The South Korean won strengthened to its firmest level against the US dollar since October 2024Japanese stocks rose in early trade, extending continued hopes for artificial intelligence-related demand alongside signs of US economic strength, with chip-related names leading the advance. SoftBank Group climbed around 6%, Tokyo Electron gained roughly 4.5% and Lasertec rose about 7%, underscoring how concentrated the rally has been in AI-adjacent semiconductor names.The dollar traded little changed against the yen, hovering around 156, a sign that the yen's recent strength has stabilised somewhat after last week's sharp move tied to BOJ rate hike speculation. The Nikkei Stock Average advanced around 1.8% to trade near 66,150, tracking the broader chip-led rally rather than any fresh domestic catalyst.The optimism extended beyond Japan. South Korea's Kospi jumped roughly 3%, while the South Korean won strengthened to its firmest level against the US dollar since October 2024, pointing to renewed foreign investor appetite for Korean equities and currency exposure alongside the region's chip rally.Investors remain focused on a handful of swing factors that could quickly alter the mood. Crude oil prices, bond yields and developments in the Middle East continue to sit at the top of the watch list, given how sensitive risk sentiment across the region has been to any escalation in the ongoing Iran conflict or a sharp move in energy markets. For now, the combination of AI-driven demand optimism and resilient US data appears to be outweighing those risks, but the rally's concentration in a narrow set of chip names leaves it vulnerable to a reversal if sentiment on any of those fronts shifts. This article was written by Eamonn Sheridan at investinglive.com.