Foreign investors further increased their holdings of markets such as Malaysia and other Southeast Asian countries,continuing to seek their high yields and promise of capital gains.
Yet, the shifting in the global sentiment over the past few weeks has had an impact as concerns grew that top central banks may not have additional measures to support economies after a slew of unconventional steps like negative interest rates and money printing.
Worries that the Bank of Japan may lead the way by forcing longer term yields up, and therefore steepening yield curves,also weighed on emerging market bonds.
"The global steepening of bond yields has caused people to reconsider the carry trades that were being put on earlier," said Mirza Baig, head of currency and rates research for emerging Asia at BNP Paribas in Singapore.
"We've had a very solid run for the last four months if you look at any measure of emerging market bond performance," Baig said, adding that the selloff therefore appeared to be driven by profit-taking.
Most emerging Asian bonds have been slumping since the European Central Bank on Sept. 8 provided few hints about future stimulus.
The Federal Reserve is expected to hold interest rates this week, but the U.S. central bank is likely to tighten this year.
There is no consensus inside the BOJ on whether to deepen negative rates at the Sept. 20-21 meeting, sources said.
Malaysia's five-year government bond yield rose to 3.285 percent on Monday, its highest since July 5.
Saktiandi Supaat, Maybank's head of FX research, said Malaysian bonds will see intermittent outflows although demand among long-term investors remains strong.
"The inflows have been significant and domestic factors such as weak economic data and commodities cycle can play a role," Singapore-based Saktiandi said.
Malaysia was a hot spot in emerging Asia bond markets. Last month, it enjoyed 6.0 billion ringgit ($1.5 billion) of bond inflows, the largest since April.
That came as U.S. investment bank JPMorgan decided to include dollar-denominated Islamic bonds (sukuk) from Malaysia,Turkey and Indonesia in its emerging markets indices starting from Oct. 31.
Foreign holdings in Malaysian bonds and bills, excluding sukuk, stood around 55 percent of total outstanding in the second quarter, increasing risks of more profit-taking.
The recent slide in crude prices is also likely to undermine the country's oil and gas revenue, hurting sentiment.
South Korea is seen as another victim, with expectations for further rate cuts weakening. Last month, foreign investors cuttheir holdings of its bonds by 917 billion won ($817.8 million), although offshore funds are net buyers so far this month.
The Bank of Korea on Sept. 9 kept its policy interest rate unchanged at the record low of 1.25 percent amid caution oversurging household debts.
"Until the household debt issue is solved, the BOK is unlikely to move," said Shin Dong-su, a fixed-income analyst at Eugene Investment & Securities in Seoul.
"It is unlikely to extend duration here. Any rise in yield is not a chance to buy on dips given growing risks of losses."
INDONESIA STILL ATTRACTIVE
By contrast, Indonesian bonds continued to lure foreign investors as the country's central bank indicated further easing.
Foreigners increased Indonesian bond holdings by 7.1 trillion rupiah ($540.1 million) in the first 14 days of September after adding 9.1 trillion rupiah in August.
"Inflation has fallen below the central bank's target, this has increased the likelihood of further monetary easing," said Wan Howe Chung, global asset manager Amundi's head of Asian fixed income.
"While positioning of investors is relatively heavy, we expect supply and fiscal stance in Indonesia to be stable and expect Indonesia government bonds to be well supported by both domestic and offshore market participants," he said.