Asian markets mostly higher on hopes for coronavirus vaccine

Shares were mostly higher in Asia on Wednesday as investors were encouraged by news that an experimental COVID-19 vaccine under development by Moderna and the U.S. National Institutes of Health revved up people’s immune systems just as desired.

Tokyo's Nikkei 225 advanced 1.6% to 22,945.50, while the Kospi in South Korea added 0.9% to 2,201.96. In Australia, the S&P/ASX 200 added 1.7% to 6,039.50. Hong Kong's Hang Seng was nearly unchanged at 25,476.31, while the Shanghai Composite Index slipped 0.5% to 3,397.63. Shares were mixed in Southeast Asia and rose in Taiwan.

The Bank of Japan kept its ultra-easy monetary stance unchanged as it wrapped up a policy meeting. It forecast that the economy would improve later in the year, assuming there is no major “second wave" of outbreaks of the new coronavirus.

But the central back acknowledged very high uncertainties over the outlook for the world's third largest economy. The bank's growth forecast for the year was downgraded to minus 5.7%- minus 4.5% from the earlier forecast of minus 5%-minus 3%.

The report also raised the issue of financial stability, noting that the “vulnerability of the financial system could increase,” said Marcel Thieliant of Capital Economics.

Investors are awaiting April-June economic growth data for China, which is due later in the week.

The focus for now was on news that scientists soon will begin a 30,000-person study to see if the experimental vaccine developed by Moderna and the NIH is strong enough to protect against the coronavirus.

News about the vaccine came after the end of trading for U.S. markets, where after another day of unsettled trading the S&P 500 rose 1.3% to 3,197.52. The Dow Jones Industrial Average added 2.1% to 26,642.59, lifted by gains for UnitedHealth Group...