(Bloomberg) -- Investors face a further dimming of the allure of Southeast Asian currencies as aggressive US interest-rate hikes point to more losses in local markets. 

Asian currencies are set to come under renewed pressure after the Federal Reserve hiked by another 75 basis points Wednesday, widening the policy divergence. Asian bond yields are likely to keep climbing, with an index of emerging-Asia debt registering losses of around 2.2% for dollar-based investors this month.

“Going long dollar-Asia seems prudent for now, so long as Fed hawkishness continues to exceed market expectations,” said Galvin Chia, a strategist at NatWest Markets in Singapore. “The alternatives all look worse.” 

The following four charts show the impact of US rate hikes on Southeast Asian currencies. 

1. Rate Divergence

The rate gap between the US and Southeast Asia is set to widen even further. Economists surveyed by Bloomberg predict Malaysia’s overnight policy rate will edge up to 2.75% by year-end, lagging further behind the Fed benchmark, which is expected to rise to 4%, according to economists surveyed as of Sept. 16. That said, economists’ projections could be revised higher after the Fed’s dot plot showed that the committee is now projecting for the US rate to rise to around 4.4% by the end of this year.

The difference between the two rates will then be 125 basis points, more than five standard deviations below the five-year average. A comparable measure for Indonesia, Thailand and Philippines is at least four standard deviations below the five-year average.   

2. Asian FX and Treasuries

The correlation between the Bloomberg JPMorgan Asia dollar index and US 10-year yields has become increasingly inverse, and is now close to the most negative since June 2021. That suggests further gains in US yields will drag Asian currencies lower, at least for now. 

All Asian currencies have weakened against the greenback in September, with the Philippine peso showing the highest vulnerability in emerging Asia to the surge in US yields on a 30-day correlation basis. 

3. Rates and Currencies 

The correlation between Southeast Asian currencies and domestic 10-year yields has risen, suggesting recent currency weakness has lowered interest in domestic bonds. Global funds have pulled out $948 million from Indonesia bonds in September, easily exceeding the $579 million inflow in August, which was the first time in six months that foreign funds have come into the market. 

4. Real Yields

Still-elevated inflation has eaten into the nominal yield returns offered by Southeast Asian bonds. August inflation in Thailand accelerated to a fresh 14-year high of 7.9%, significantly higher than the yield of around 3% on 10-year baht bonds. 

The yield on Thai debt is therefore about 500 basis points below the inflation rate, and around three standard deviations below the five-year mean. The same gauge for Indonesia and Malaysia stands at minus 2.4 and minus 1.5 respectively. 

(Updates with prices and Fed dot plot details from second paragraph onwards)

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