Data from central banks and bond market associations showed overseas investors bought a net $10.02 billion in Indonesian, Thai, South Korean, Indian and Malaysian bonds in 2018, compared with $49 billion in 2017.

In December, South Korea and Indian bonds had the biggest inflows among the five countries, of $1.33 billion and $676 million respectively.

However, cumulative flows for India and Malaysian bonds in full-year 2018 were negative, the data showed.

U.S. Treasury yields surged last year on the back of four rate hikes by the Federal Reserve, narrowing the interest rate gap between some high yielding Asian bonds and U.S. ones.

Khoon Goh, head of Asia research at ANZ, said U.S.-China trade tensions, Fed rate hikes, wider emerging market concerns, a mid-year spike in oil prices and concerns over global growth were all headwinds impacting flows into Asia bonds last year.

"How these and other developments play out in 2019 will be key to whether portfolio inflows will return," he said.


Graphic: Foreign flows into Asian bonds-yearly - https://tmsnrt.rs/2HcKLCz

(Gr
aphic: Foreign flows into Asian bonds - monthly - https://tmsnrt.rs/2SS8ZDO

(Reporting by Patturaja Murugaboopathy and Gaurav Dogra)