US Dollar Weakens Globally; Ringgit Strengthens While Rupiah Remains Sluggish

Most Asian currencies strengthened today, Tuesday (9/6/2026). According to Refinitiv, the South Korean won led the gains, rising by 0.51%, followed by the Malaysian ringgit, which strengthened by 0.27%. However, the Indonesian rupiah and the Japanese yen both declined. The rupiah weakened by 0.03% after an initial period of strength during early trading.

The strengthening of Asian currencies was supported by the weakening of the US Dollar. The US Dollar index fell to the 99 level today, after having remained at the 100 level for two days. This decline in the index indicates that investors are selling the US Dollar in favour of alternative investments. This downward trend was primarily supported by falling global oil prices. With the decline in oil prices, inflation is expected to ease slightly.

Global oil prices moved lower during Tuesday (9/6/2026) morning WIB as market participants monitored recent developments in the Middle East. The easing of direct attacks between Iran and Israel has reduced some of the geopolitical risk premiums that had been driving up energy prices in recent months. According to Refinitiv data at 09:15 WIB, Brent crude oil prices stood at US$93.64 per barrel, down 0.65% from the previous close. Meanwhile, West Texas Intermediate (WTI) crude fell 0.70% to US$90.66 per barrel. This decline follows the previous day’s close, where Brent stood at US$94.25 per barrel and WTI at US$91.30 per barrel.