Indonesian rupiah and stocks rose sharply as domestic markets reopened following a week-long holiday, driven by renewed optimism regarding potential easing of tensions between the Trump administration and Iran. The currency gained the most in six months, reflecting strong investor sentiment. Stocks also climbed, buoyed by expectations that reduced geopolitical risk could boost economic activity and corporate earnings in Southeast Asia's largest economy. The reopening saw increased trading volumes as investors returned to the market after the extended break.

This positive market movement follows a period of heightened uncertainty due to the holiday closure and concerns about Middle East stability. The Trump administration's push to de-escalate the Iran situation is seen as a critical factor lifting sentiment, as reduced conflict risk is viewed as beneficial for global markets and regional trade flows. Investors appear hopeful that a resolution could lead to lower oil prices and improved business conditions for Indonesian exporters.

The rally suggests investors are betting on a favorable shift in the geopolitical outlook translating into tangible economic benefits for Indonesia. While the holiday closure limited immediate trading, the strong opening sets a positive tone for the rest of the year, though sustained gains will depend on concrete progress in resolving the Iran tensions.