South Korean stocks posted their largest daily gain on record Friday, as a chip-led rebound and massive foreign buying lifted the Kospi by more than 1,000 points. The benchmark Kospi closed at 6,595.45, up 1,001.89 points, or 17.91 percent, marking record daily gains in both point and percentage terms. It opened just 1.15 percent higher at 5,657.79 before rapidly climbing by double digits to reach an intraday high of 6,630.77, up 18.5 percent. A buy-side sidecar was triggered on the Kospi at 9:0