Report published September 25, 2026

MUFG FX Weekly: Bond Selling Contagion Risks Spreading to FX and Carry Trades

MUFG · September 25, 2026

A dramatic surge in US Treasury yields, climbing 72bps in 21 days on higher real rates and term premiums, has elevated the threat of contagion into equities and popular FX carry strategies. While the US dollar continues to benefit from higher real yields, the Japanese yen appears best positioned to outperform in the G10 space if market volatility expands.

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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.Severe fixed income sell-offs have pushed the 2-year UST yield up 72bps over 21 days—the sharpest spike since before the 2023 regional banking crisis—raising risks of contagion into equities and FX carry trades.
2.The Japanese yen is best positioned among G10 currencies to gain from broader risk liquidations, supported by official rhetoric against yen weakness and expectations of another BoJ rate hike in December.
3.The surge in US Treasury yields is driven primarily by real yields and term premiums rather than inflation expectations, maintaining a positive relationship where every 10bp increase in the US 30Y real yield yields roughly 0.25%-0.30% DXY appreciation.

Bond selling contagion risks spreading to FX
USD: The building risk of fixed income selling spreading
FX carry liquidation risks
JPY appears best placed to benefit in G10 space
Weekly Calendar
Key Events
Open Trade Ideas
FX Portfolio
FX Positioning
JPY Flows – Balance of Payments
What Does the US Bond Rout Mean for FX?
Yield Decomposition
Term Premium
An Extreme Yield Environment
DXY Sensitivity
FX Implications

Report data

US 30Y TREASURY YIELD DECOMPOSITION — as of September 25, 2026.

Metric	Estimate	Context
2-year US Treasury yield 21-day change	72.0 bps	Largest 21-day jump in 2yr yields since 3 March 2023 prior to SVB collapse.
US 30-Year Treasury Yield	5.46%	Highest level since 2004, sitting at the 99.98th percentile of observations since 2010.
DXY sensitivity to US 30Y real yield	0.25 % per 10bp	A 10bp increase in the US 30Y real yield corresponds to an estimated 0.25%-0.30% appreciation in the DXY index.
Magnificent 7 3-month return	19.0%	Mag 7 gained 19% over the last three months versus 5% for the S&P 500.
Japan energy fuel deficit 3-month sum	6.7 JPY trn	Energy fuel deficit expanded from JPY 4.9trn in June to JPY 6.7trn in August as Japan returned to global markets for energy.

Source: Bloomberg, Macrobond & MUFG GMR; Bloomberg and MUFG GMR; Monthly trade data / Macrobond, Bloomberg & MUFG Research. This is a dated model snapshot, not a live forecast.