SEOUL — Shares of Samsung Electronics surged 6.15%, or 15,000 won, to 259,000 won Tuesday afternoon, leading a broad rebound in South Korean semiconductor stocks as bargain hunters returned to the sector following last week's sharp selloff tied to global concerns over AI-related valuations.

The rally in Samsung shares came as South Korea's benchmark Kospi index snapped a two-day losing streak, climbing 3.56%, or 231.68 points, to close at 6,747.95, according to Korea Exchange data. The index had lost ground in early trading before sharply reversing course around midday, a swing strong enough to trigger a five-minute halt in program trading after the rally accelerated past technical thresholds monitored by the exchange.

Samsung and SK Hynix lead the recovery

Samsung Electronics and SK Hynix, the two memory chip giants that together account for more than half of the Kospi's total index value, led Tuesday's rebound. SK Hynix rose 4.25% to 4.1%, depending on the measurement point during the session, while Samsung's gains were the larger of the two, according to trading data reported by multiple outlets tracking the session. Trading volume for the overall session came in at a moderate 387.8 million shares, worth approximately 24.5 trillion won, or roughly $16.6 billion.

The rebound followed a difficult stretch for........

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