Shares bounced back Tuesday on the Seoul stock exchange on bargain hunting following recent heavy losses. The benchmark Kospi index rose 65.98 points, or 3.9 per cent, to close at 1,776.68. Advancing issues outnumbered losers 675 to 183, according to a report of the German Press Agency \"DPA\". The main index of the technology-heavy Kosdaq market leaped 13.85 points to 479.75.