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ASEAN Macro Daily(Beta Mode)

September 29, 2026 robomacro.com

Rupiah Hits 18,000 as BI Signals Defense

JCI6,147.86-1.51%
KLCI1,670.02-0.10%
STI5,729.02+0.31%
USD/IDR17,993.00+0.24%

Market Snapshot

AssetLevelChange
JCI6,147.86-1.51%
KLCI1,670.02-0.10%
STI5,729.02+0.31%
USD/IDR17,993.00+0.24%
USD/THB33.51+0.24%
USD/MYR4.08+0.11%
USD/PHP62.45+0.13%
USD/SGD1.28-0.08%
Brent Crude95.67-9.13%
Gold4,215.00+1.12%
Bitcoin83,506.51+0.00%
Indonesia 10Y Govt Yield--
Thailand 10Y Govt Yield--

Prior Economic Events

Data Prior Cons Actual
No events available
USD/IDR Exchange RateUSD/IDR Exchange Rate | Type: market_hloc | USD per IDR: 1.799e+04 (2026-09-29) | Range: 1.75e+04–1.816e+04 | Trend(6pt): 1.783e+04,1.793e+04,1.782e+04,1.772e+04,1.756e+04,1.799e+04

Today's Economic Events

Data Prior Cons Time
Inflation Rate Year-over-Year3.19-20:00
Trade Balance130m-20:00
  • Rupiah hits 18,000 threshold amid outflows, prompting BI intervention shift
  • JCI drops 1.51% while STI gains 0.31% on regional divergence
  • Indonesia inflation and trade data due tomorrow; Thailand advances US trade talks

Yesterday's Recap

Indonesian markets dominated ASEAN action as the rupiah breached the 18,000 level against the USD, closing at 17,993 after a 0.24% daily gain in USD/IDR. Portfolio outflows and sustained FX demand pressured the currency despite earlier rate support, with Bank Indonesia acknowledging fundamental problems behind the depreciation. The Jakarta Composite Index fell 1.51% to 6,147.86.

In contrast, Singapore’s STI rose 0.31% to 5,729.02 while Malaysia’s KLCI eased 0.10%. Thailand’s cabinet approved a 1.26 trillion baht FY2027 borrowing plan with public debt projected above 69% of GDP. The Thai baht also hit a two-month low as regional Asian currencies weakened.

No macro data releases occurred across the six ASEAN economies on 28 September.

The Day Ahead

Indonesia will publish August inflation year-over-year and trade balance figures at 20:00 ET on 30 September. The inflation print follows the prior 3.19% reading while trade balance data will update from the previous 130 billion rupiah surplus. No central bank meetings, policy announcements or bond auctions are scheduled for any ASEAN market.

Thailand continues implementation work on its high-income action plan targeting manufacturing and digital sectors by 2037. Regional traders will monitor USD strength and oil price movements for further currency implications.

Other Economic Notes

Persistent foreign outflows from Indonesia highlight eroding rate-support effects on the rupiah as BI reduces spot intervention to 30% of total FX operations. Thailand’s push for a US trade agreement ahead of the Section 301 review aims to secure supply-chain positioning amid ongoing China shifts. The sharp 9.13% drop in Brent crude to 95.67 offers relief to import-dependent ASEAN economies but pressures commodity exporters like Indonesia.

Gold’s 1.12% advance to 4,215 reflects safe-haven demand amid global uncertainty. No fresh PMI or FDI prints emerged to alter growth assessments.

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ASEAN Macro Daily(Beta Mode)

September 29, 2026 robomacro.com
Brent Crude Oil Price Brent Crude Oil Price | Type: market_hloc | USD per Barrel: 95.95 (2026-09-29) | Range: 71.57–108.8 | Trend(5pt): 73.15,94.07,87.07,96.28,95.95
JCI Indonesia Equity Index JCI Indonesia Equity Index | Type: market_hloc | Index Level: 6148 (2026-09-28) | Range: 5643–6686 | Trend(5pt): 5821,6340,6374,6620,6148

Global Macro News

Broad USD strength lifted USD/IDR, USD/THB, USD/MYR and USD/PHP while USD/SGD eased modestly. Hawkish Fed sentiment and rising Treasury yields weighed on Asian currencies, with the Thai baht particularly affected. The oil price collapse signals weaker global demand or supply adjustments that could ease imported inflation pressures across ASEAN.

Gold’s gain underscores hedging against currency volatility and geopolitical risks. No major shifts appeared in Bitcoin or unreported sovereign yields. Supply-chain diversification themes continue to favor Vietnam and Malaysia as alternatives to China, though short-term capital flow volatility remains centered on Indonesia.

Regional equity divergence reflects these varying external exposures.

ASEAN Central Banks Watch

Bank Indonesia faces the most acute pressure as the rupiah breach of 18,000 forces a defensive stance with reduced spot intervention and explicit recognition of fundamental depreciation drivers. BI has noted that every 25 basis point rate hike slows economic growth by 0.1%, limiting further tightening room. No policy actions or statements emerged from the Bank of Thailand, Bank Negara Malaysia, Bangko Sentral ng Pilipinas, Monetary Authority of Singapore or State Bank of Vietnam.

MAS continues to manage the Singapore dollar NEER band without interest-rate adjustments. Policy divergence persists with BI most active on FX defense while other central banks maintain steady postures amid contained inflation and stable capital flows. Reserve adequacy remains a focus for BI given ongoing outflows.

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