KOSPI 8K record short-lived as Iran nerves bite

South Korea's KOSPI index briefly surged above the 8,000 mark for the first time, setting a new all-time high, before reversing gains as geopolitical tensions surrounding Iran and a broad risk-off mood weighed on Asian equity markets. The intraday record proved short-lived, with the index giving back its advance by the close.

Government bond yields ground higher across the session, with the 10-year US Treasury pushing above 4.5%, lending support to the dollar while weighing on equities and metals. The risk-off tone built gradually through the day rather than arriving in one sharp move. For foreign exchange and currencies traders, the rise in US yields reinforces the dollar's yield advantage, which can attract carry flows and put pressure on Asian currencies. The dollar index held firm as the yield differential widened. NowPrice's real-time fx quotes show the dollar trading near session highs against a basket of major currencies.

The Federal Reserve provided the early narrative. New York Fed President John Williams said monetary policy is in a good place and that he sees no reason to raise or lower rates right now, a stance he grounded in his view that tariff-driven inflation has largely passed through and that the labour market is not generating unusual second-round price pressures. Fed Governor Barr added a separate note of caution. Looking ahead, traders will watch for further comments from Fed officials and any escalation in Iran-related headlines, which could amplify risk-off moves and support the dollar further. Key Asian data releases next week, including Chinese industrial production and Japanese trade figures, may also influence regional currency direction.