Wall Street advanced, as did the US dollar, after Federal Reserve policy makers kept their pledge to maintain interest rates near zero for a "considerable time" after the end of its monthly bond-buying program.
"'Considerable time' sounds like it is a calendar concept, but it is highly conditional and it is linked to the committee's assessment of the economy," Fed Chair Janet Yellen said at a press conference. "There is no fixed mechanical interpretation of a time period."
Still, policy makers lifted their federal funds rate predictions, raising the median estimate to 1.375 per cent at the end of 2015, compared with a June forecast of 1.125 per cent.
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"On balance, labour market conditions improved somewhat further; however, the unemployment rate is little changed and a range of labour market indicators suggests that there remains significant underutilisation of labour resources," the Federal Open Market Committee said in a statement. "A highly accommodative stance of monetary policy remains appropriate."