SI Asian stocks rose on Tuesday on an extended bounce on Wall Street as investors drew comfort from full approval granted to the Pfizer/BioNTech vaccine and on easing worries of an imminent tapering of stimulus by the Federal Reserve.

The dollar was licking its wounds after its sharpest one-day fall since May, which spurred a 5 per cent rally in oil prices on Monday.

MSCI's broadest index of Asia-Pacific shares outside Japan rose 1.2 per cent, with Japan and South Korean indexes jumping more than 1 per cent. Australia shares were up 0.2 per cent and Taiwan stocks rose 0.7 per cent.

Chinese markets also edged up 0.2 per cent, with technology stocks extending their recovery after enduring a pummelling in recent weeks on regulatory worries.

Wall Street's strength underpinned sentient in Asia. The Nasdaq reached an all-time closing high on Monday after the U.S. Food and Drug Administration granted full approval to the COVID-19 vaccine developed by Pfizer and BioNTech, in a move that could accelerate inoculations in the United States.

Analysts at ANZ pointed to growing expectations that decelerating global business activity will act as a restraint on central bank intentions to start dialling back monetary stimulus in the near term.

Global markets took a beating last week on worries the Fed is edging closer to tapering its stimulus. Asia's main index tumbled 4.8 per cent last week, and MSCI's Asia Pacific index ex-Japan index is still down 2.9 per cent so far this month.

The improved sentiment overnight drove the dollar down more than 1 per cent against its Australian and Canadian counterparts as well as the Norwegian crown and Swedish crown.

"A positive risk backdrop has pushed flows out of the dollar," said Chris Weston, head of research at brokerage Pepperstone in Melbourne, adding that positive analyst commentary around oil and cyclical stocks had also helped the broad mood.

Currency market

The dollar was up 0.04 per cent against the yen to 109.72.The single currency was flat at $1.1738, having lost1.11 per cent in a month, while the dollar index, which tracks the greenback against a basket of currencies of other major trading partners, was up slightly at 93.041.

Last week, the dollar index hit a nine-month high on bets the Fed would start shifting away from its accommodative monetary policy, but that view began to change on Friday when Dallas Fed President Robert Kaplan said he might reconsider his hawkish stance if the virus harms the economy.

Now, investors are less confident Fed Chair Jerome Powell's speech at Jackson Hole this week will indicate a timeline for winding down the Fed's bond-buying program.

Data overnight showed strong albeit slowing services and manufacturing activity in Europe while business activity growth in the United States slowed for a third straight month as the spread of the Delta virus variant took a toll.

The yield on benchmark 10-year Treasury notes was up at 1.2567 per cent compared with its U.S. close of 1.255 per cent on Monday.

Commodities

In commodities markets, Brent crude oil futures edged up 0.9 per cent to $69.45 a barrel after putting on more than 5 per centon Monday, as a weaker dollar and strong global equities markets boosted crude following seven sessions of declines.

Gold prices fell slightly but hovered above the key psychological level of $1,800.

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