Global stock prices inched higher while US bond yields hovered near a 13-month peak on Monday as investors bet US economic growth will accelerate after the $1.9 trillion stimulus bill President Joe Biden signed into law last week.
A rollout of Covid-19 vaccinations in the United States and some other countries stoked a bullish mood on risk assets even as investors become wary of key central bank policy meets later in the week, including the US Federal Reserve's.
"The US is now vaccinating more three million people a day, with President Biden now saying all adults will be able to get a shot by May 1. It could soon achieve a herd immunity and an economic normalisation," said Norihiro Fujito, chief investment strategist at Mitsubishi UFJ Morgan Stanley Securities.
US S&P500 futures rose 0.2% in early Asian trade, trading just below a record high level touched last week, while Japan's Nikkei ticked up 0.3%.
Mainland Chinese shares buckled the trend to trade lower despite data showing a quickening in industrial output and a rise in retail sales.
MSCI's broadest index of Asia-Pacific shares outside Japan rose 0.2%, with Hong Kong leading the gains.
"Most market participants and policy-makers have been surprised by the speed of the recovery. On our estimates, the US economy will reach pre-Covid-19 output levels by the current quarter," said Chetan Ahya, global head of economics, in a note.
"Fiscal policy is doing much more than fill the output hole. Transfers to households have already exceeded the income lost in the recession. As reopening gathers pace, the labour market is poised for a sharp rebound."
The US House of Representatives gave final approval last week to the Covid-19 relief bill, giving Biden his first major victory in office.
Some investors speculate part of $1,400 direct payments to households could find its way to stock markets, as seemed to be the case with similar direct payments made last year for coronavirus relief.
Investors also suspect the $1.9 trillion package, which amounts to more than 8% of the country's GDP, could stoke inflation - to the detriment of bonds, especially when their yields are so low.
Rising inflation expectations could prompt the Federal Reserve to signal it will start raising rates sooner when it announces its latest economic projections at the end of Federal Open Market Committee (FOMC) meeting on Wednesday.
"Following the fiscal stimulus packages it is inevitable
that Fed GDP forecasts will be revised up, and some FOMC members might think rates will have to move higher sooner than they anticipated last December," wrote economists at ANZ.
The 10-year US Treasuries yield stood at 1.628%, having risen to as high as 1.642% on Friday, a high last seen in February last year.
On top of continued US economic optimism and increased debt supply expectations after the stimulus, uncertainties about whether the Fed will extend an emergency regulatory easing in the so-called "supplementary leverage ratio" (SLR) added to the sense of unease.
Higher US bond yields saw the dollar rising against other major currencies.
The euro slipped to $1.1947 from last week's high of $1.1990 while the dollar held firm at 109.12 yen, near nine-month high of 109.235 set last Tuesday.
The British pound slipped 0.25% to $1.3934.
Bitcoin briefly slipped to $58,742, off a record high of $61,781 hit on Saturday, after Reuters reported a senior Indian government official said Delhi will propose a law banning cryptocurrencies, fining anyone in the country trading or even holding such digital assets.
Oil prices were supported by production cuts by major oil producers and optimism about a demand recovery as the global economy recovers from the pandemic-induced recession.
US crude futures traded at $66.23 per barrel, up 0.9% on the day.