South Korean stocks closed down more than 1% on Tuesday, snapping a five-trading-day winning streak as a sharp rise in government bond yields undermined risk appetite. The market had earlier climbed to its highest intraday level in a month, helped by strength in chip shares after the Philadelphia Semiconductor Index rose 1.6% overnight, but momentum weakened into the afternoon. Samsung Electronics fell 2.19% after erasing an earlier gain of as much as 4.9%, while SK Hynix ended up 1.03% after rising as much as 8.9% during the session. Mirae Asset Securities analyst Seo Sang-young said foreign funds came in early, but capital flows and overall market sentiment became unstable as yields climbed. In the bond market, the yield on the most liquid three-year South Korean government bond rose 8.5 basis points to 3.854%, while the benchmark 10-year yield advanced 9.5 basis points to 4.395%.