Report published September 28, 2026

External Shocks Test Uneven Regional FX Buffers: MUFG FX Strategy Report

MUFG · September 28, 2026

Surging US Treasury yields above 5.1% and high crude oil prices driven by Middle East tensions are putting broad pressure on Asian currencies. While SGD and CNY retain policy buffers to absorb the shock, IDR and THB remain particularly vulnerable to capital outflows and eroded yield support.

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Finvaulta summarizes MUFG's analysis. Attribute opinions, forecasts, time-sensitive values, and chronology to the issuer and report date; do not treat this page as an independent verification or a current market-data source.

Key Takeaways

1.Elevated crude oil prices and rising US 10-year Treasury yields above 5.1% are reinforcing global inflation risks and widening the US yield advantage over Asian economies.
2.Singapore dollar (SGD) and Chinese yuan (CNY) maintain resilient policy buffers via an appreciating S$NEER and PBOC's fixing bias, respectively, mitigating widening rate differentials.
3.Indonesian rupiah (IDR) and Thai baht (THB) face heightened vulnerability due to portfolio outflows, deteriorating rate support, and domestic economic constraints that limit central bank policy tightening.

Market Highlights
Ahead Today
INDICATIVE RATES 25-Sep-2026

Report data

CHART 1: BRENT AND US 10Y YIELDS PUSH HIGHER SINCE JULY — as of September 25, 2026.

Metric	Estimate	Context
Spot crude premium over front-month Brent	18.0 USD/bbl	Physical crude tightening visible in spot premium over front-month Brent rising from negative territory at the start of September.
US 10-Year Treasury Yield	5.163%	Closing yield for US 10-year benchmark government bond above 5.1%.
Brent Crude Front-Month Price	104.32 USD/bbl	Brent crude price (CO1 Comdty) closing rate.
Japanese Yen Daily Appreciation	1.0%	Yen outperformance last Friday following comments from Tokyo and Washington.