Chinese debt showed $2.5 billion of outflows last month, compared with $9.1 billion of inflows in other EM, IIF estimated in a report.

If confirmed by official data, it would be the fifth consecutive month of foreign outflows from China's $20 trillion bond market.

China's stock market meanwhile witnessed $9.1 billion of foreign inflows, compared with outflows of $19.6 billion in other EM markets, according to the IIF.

China's stock market rebounded more than 6% in June, on economic stimulus measures by Beijing and eased COVID-19 restrictions.

"For the coming months, several factors will influence flows dynamics, among these the timing of inflation peaking and the outlook for the Chinese economy will be in focus," the IIF report said.

Overseas investors have been reducing holdings of Chinese bonds since February, as diverging monetary policies kept Chinese yields pinned below their U.S. counterparts.

The People's Bank of China has been easing policy to aid a COVID-hit economy, while the U.S. Federal Reserve has been hiking rates to fight inflation.

Last week, China took fresh steps to lure foreign bond investors, saying it would cut service fees, improve overseas access to foreign exchange hedging, and streamline the process of opening accounts.

China also announced plans for "Swap Connect" with Hong Kong on Monday, allowing mutual access to interest rate swap trading. The move would provide a new risk-hedging tool for overseas investors in China's bond market.

(Reporting by Samuel Shen and Brenda Goh; editing by John Stonestreet)