The main indexes in New York had rallied as worries about the impact of the Omicron coronavirus variant faded.

In Hong Kong, Chinese real estate company Kaisa suspended trading just before the opening bell, "pending the release by the Company of an announcement containing inside information", according to a filing with the exchange.

Kaisa, China's 27th-largest property firm but one of its most indebted, became the latest company to spook investors when it announced Friday that it had failed in a bid for a debt swap that would buy it crucial time.

China's real estate sector -- a key growth driver in the world's second-largest economy -- has cooled in recent months after Beijing tightened home-buying rules and launched a regulatory assault on speculation.

The moves have created headaches for several major developers, notably China Evergrande, the country's second-largest by volume, which is billions of dollars in debt.

On Tuesday, Evergrande missed a deadline to repay some of its overseas creditors, raising the prospect of a default as it prepares for a government-backed mega-restructure.

- Receding Omicron fears -

At the close in Hong Kong Wednesday, the Hang Seng Index was up 0.06 percent at 23,996.87.

In Tokyo, the Nikkei 225 closed 1.42 percent higher at 28,860.62.

Shanghai and Shenzhen both finished up by more than one percent.

"The Nikkei index was up following gains of US shares. A wide variety of high tech shares were bought as fears over the Omicron variant receded," Okasan Online Securities said in a note.

Sydney was up more than one percent, with Wellington gaining two percent. Seoul, Jakarta and Taipei were marginally higher, while Singapore was slightly down.

Europe's top stock markets steadied at the open on Wednesday after surging the previous session.

London's benchmark FTSE 100 index gained 0.2 percent, while Frankfurt's DAX index and the Paris CAC also rose.

Wall Street stocks were up for a second straight session Tuesday, with the tech-rich Nasdaq enjoying a three percent jump.

Carol Kong, a strategist at the Commonwealth Bank of Australia, said the initial evidence about Omicron "appears to have calmed financial markets, for now, as evidenced by the recovery in risk assets".

"But we caution against drawing conclusions from these early reports."

World stocks and oil had tanked on November 26 when news of the new variant first flashed across traders' screens.

After a rollercoaster ride, investors are now optimistic over the outlook in the run-up to Christmas.

- Key figures around 0810 GMT -

Tokyo - Nikkei 225: UP 1.42 percent at 28,860.62 (close)

Hong Kong - Hang Seng Index: UP 0.06 percent at 23,996.87 (close)

Shanghai - Composite: UP 1.18 percent at 3,637.57 (close)

New York - Dow: UP 1.4 percent at 35,719.43 (close)

London - FTSE 100: UP 0.2 percent at 7,350.56

West Texas Intermediate: DOWN 0.93 percent at $71.38 per barrel

Brent North Sea crude: DOWN 0.70 percent at $74.91 per barrel

Euro/dollar: UP at $1.1286 from $1.1281

Dollar/yen: UP at 113.53 yen from 113.47 yen

Pound/dollar: DOWN at 1.3239 from 1.3248

Euro/pound: UP at 85.24 pence from 85.15 pence

-- Bloomberg News contributed to this report --

leg/qan

China Evergrande Group

Kaisa Group Holdings Ltd