Asian stocks retreated from all-time highs on Tuesday as the months-long technology rally showed signs of fatigue. South Korea's benchmark index fell more than 4% from its record, dragged by semiconductor heavyweights as investors locked in gains. The selloff extended across the region, with broader Asian equities declining as a tech rally that propelled markets to new peaks lost momentum.

The pullback comes after an extended run in chip and tech stocks that lifted several Asian benchmarks to historic levels. Renewed concerns that valuations have become overstretched prompted profit-taking, particularly in the semiconductor sector. At the same time, investors are closely watching developments in US-Iran peace talks, adding a layer of geopolitical uncertainty to market sentiment.

The selloff hit related stocks and sectors hard, with semiconductor firms bearing the brunt of the decline. The broader technology sector, a key driver of the recent record highs, saw widespread selling as the rally that had lifted markets in recent months appeared to cool. The downturn was felt across multiple Asian indices, reflecting a synchronized pullback.

Analysts are divided on whether this marks a temporary pause or a deeper correction. Some argue that the tech rally had become overextended and that profit-taking was overdue, suggesting further downside may be limited if valuations adjust. Others warn that rising geopolitical risks and a potential slowdown in earnings growth could prolong the selloff, particularly if US-Iran negotiations falter.