Global stocks edged up for a sixth day on Monday, in a week that is almost certain to see the start of an easing cycle in the United States that investors believe may begin with an outsized move. Central banks in Japan and the UK also meet this week,

Asian stocks wobbled on Tuesday while the dollar and U.S. Treasury yields came under pressure, with just a day to go before the expected start of the Federal Reserve's easing cycle that could see policymakers deliver an outsized rate cut.

The U.S. currency dropped back sharply against the yen, handing back about half of its rally from Tuesday, when unexpectedly robust U.S. retail sales data was taken as weakening the case for aggressive Fed easing.