Malaysian government bonds post the weakest performance among Southeast Asian peers in August, with investors turning cautious amid concerns about the availability of long-dated debt and the possibility of higher interest rates.

Bloomberg reports that the market lags due to worries over supply of longer-maturity notes and the associated risk that policy rates could rise. Free Malaysia Today similarly attributes the underperformance to supply-related concerns and rate-hike anxiety, noting a sharp move in benchmark yields.

Free Malaysia Today adds specific figures, saying the yield on 10-year bonds rises 16 basis points in August—its largest increase in nearly two years—while yields fall in the Philippines, Indonesia, and Singapore. Together, the reports indicate that Malaysia sees a relative selloff versus regional counterparts, driven by expectations around bond issuance and monetary policy.