Sentiment had been helped by a Bloomberg report that U.S. Trade Representative Robert Lighthizer would travel to Shanghai next week for meetings with Chinese officials.
White House economic adviser Larry Kudlow on Tuesday called it a good sign and said he expected Beijing to start buying U.S. agriculture products soon.
Japan's Nikkei added 0.4% in early trade, while Australian stocks rose 0.6%. MSCI's broadest index of Asia-Pacific shares outside Japan gained 0.04%.
Not so welcome was news the U.S. Justice Department was opening an antitrust investigation of major digital tech firms and possible anticompetitive practices.
The DoJ cited concerns about "search, social media, and some retail services online" -- an apparent reference to Alphabet Inc
Facebook reports results on Wednesday and Amazon and Alphabet on Thursday.
The news took a little of the gloss off a solid overnight session for Wall Street, where upbeat quarterly reports from Coca-Cola and United Technologies helped ease some concerns about earnings. [.N]
The Dow <.DJI> had ended Tuesday up 0.65%, while the S&P 500 <.SPX> gained 0.68% and the Nasdaq <.IXIC> 0.58%.
Stocks are just a whisker from all-time highs buoyed by expectations of a wave of policy stimulus by global central banks and a resulting sharp decline in bond yields.
The ECB is thought likely to at least offer a nod to easier policy at its meeting on Thursday.
EURO BREAKS DOWN
The prospect of wide scale central bank largesse helped take the sting out of the IMF's latest downgrade to its global growth forecasts.
While yields on two-year Treasuries
In currencies, the dollar got a hand up from a deal to end the U.S. budget impasse, while the euro suffered a bout of nerves in case the ECB takes a more dovish turn.
The single currency was down near two-month lows at $1.1148
The dollar nudged up on the yen to 108.23
Sterling loitered at $1.2435
Boris Johnson is set to become Britain's new prime minister later on Wednesday, but investors are no clearer on whether he would lead the country to a no-deal exit or find a compromise.
"His grip on power will be weak, given the status of a minority government," noted analysts at NAB.
"In our view, Johnson's desire to push for Brexit, deal or no deal, increases the chance of an early general election and some possibly nasty GBP outcomes."
The dollar's gains weighed on gold, which fell back to $1,416.76 per ounce
Oil prices firmed after the head of U.S. Central Command said the United States may have taken down a second Iranian drone over the Strait of Hormuz last week. [O/R]