Breakingviews: Markets too sanguine on QE threat (5:21)

May 22 - The bursting of the gold bubble is just a harbinger of how vulnerable markets are to a tapering of quantitative easing, says Breakingviews. Other asset classes are also at risk.

Europe Day Ahead: Euro zone seen improving...but not by much (2:10)

May 22 - Euro zone flash PMIs to show slight improvement, ECB president Mario Draghi speaks in London and Spain sells debt

Investors Watching Central Banks for QE Clues

May 22 (Bloomberg) -- Mark Barton reports on today's top headlines. He speaks on Bloomberg Television's "Countdown." (Source: Bloomberg)