Average daily securities turnover at SGX was $791 million in May while the figure was $1.8 billion for the Thai exchange, and $12.4 billion for HKEX, data from Refinitiv shows.
The rebound in stock prices also prompted U.S. bond yields to step up from their recent lows, with the 10-year yield off its 21-month low hit earlier in the week.
Casting a shadow over many share markets were worries the China-U.S. trade conflict was turning into a technology cold war between the world's two largest economies.