Malaysian Bonds Record Worst August Performance in Southeast Asia

Malaysian bonds recorded the worst performance in Southeast Asia during August, with the 10-year bond yield jumping 16 basis points. This increase marks the largest jump in nearly two years and stands in contrast to yield declines seen in Indonesia, Thailand, the Philippines, and Singapore.

Bank Negara Malaysia has maintained the benchmark interest rate at 2.75% for over a year, but stronger-than-estimated second-quarter economic growth has fueled expectations of a policy normalization. This growth was driven by strong domestic demand and a semiconductor export boom linked to artificial intelligence. Ringgit swaps recently priced in a potential 25-basis-point increase over the next 12 months.

The selloff was further driven by investor caution regarding Treasury duration and concerns over the supply of long-dated notes, specifically 20- and 30-year bond auctions. Maybank Securities noted that selling has been more persistent than expected, while the Aberdeen Group characterized the movement as a supply, positioning, and relative-value adjustment rather than a fundamental reassessment of the national outlook.