Wall Street advanced amid optimism that US Federal Reserve Chairman Ben Bernanke will reassure investors that the central bank will not pull back its monetary stimulus before it is satisfied with the economic outlook.
In late afternoon trading in New York, the Dow Jones Industrial Average gained 1 per cent, the Standard & Poor's 500 Index rose 0.83 per cent and the Nasdaq Composite Index increased 0.97 per cent.
The Federal Open Market Committee has begun a scheduled two-day meeting. It will release its latest policy statement on Wednesday in the US, followed by a news conference hosted by Bernanke.
"It's like the market's chewing on a piece of grass, trying to buy time," John Manley, chief equity strategist for Wells Fargo Funds Management, told Bloomberg News.
"Of course the Fed will taper. If they don't taper, heaven help us, but I don't think they'll taper one minute too soon," Manley said. "If they do anything, they'll probably err on the side of caution. They'll phase it back but only when they think they can do it safely. There are signs that it's working."