In currencies, the dollar held onto most of its overnight gains ahead of the end of the Federal Reserve's May meeting. The dollar index, which tracks the greenback against a basket of six currencies, was slightly softer at 92.330 at 3:32 p.m. HK/SIN, but remained near a four-month high.
Most analysts expect the Fed to hold interest rates steady this month, but will be on the lookout for signals on the central bank's views on inflation and the economy.
Against the yen, the dollar was mostly steady at 109.76. Meanwhile, the Australian dollar edged higher after slipping below the $0.75 handle in the last session. The Aussie dollar last traded at $0.7526.
"What's happened most recently has been a growing divergence in the growth and the inflation data in the U.S. versus Europe and Japan, in particular. And we think that persists for a little while longer, but as you start to go into the second half of this year, euro zone inflation ... starts to tick up, as does Japanese inflation," Marc Franklin, senior portfolio manager at Conning Asia Pacific, told CNBC's "Capital Connection."
"So cyclically, on a shorter term basis, we think this rebound in the dollar is [for] a fairly finite period of time."
Oil prices edged higher after sliding in the last session amid strength in the dollar. Brent crude futures for July delivery gained 0.49 percent to trade at at $73.49 per barrel and U.S. West Texas Intermediate futures for June delivery tacked on 0.7 percent to trade at $67.72.
Recent concerns over the possibility of the U.S. re-imposing sanctions on Iran have supported oil prices.
On the economic front, China's Caixin manufacturing PMI rose to 51.1 last month, compared to a forecast of 50.9.
In individual movers, SK Innovation advanced 6.11 percent following news earlier this week that it would buy back around 1 trillion won (932.6 million) of its shares.
Meanwhile, shares of Standard Chartered were down 1.75 percent in Hong Kong as of 3:37 p.m. HK/SIN. The bank reported earlier in the day that first-quarter pretax profit topped expectations.
Elsewhere, Qantas stock jumped 8.1 percent after the airline announced it was expecting record full-year pre-tax profit of between 1.55 billion and 1.6 billion Australian dollars ($1.17 billion to $1.2 billion).