Central bank uncertainty weighs on investors

Investors generally sold riskier assets across financial markets on Friday, remaining to a certain degree in limbo until they learn how much of a punch central banks will give to the stumbling global economy.
The euro zone's struggle to prevent its own break up continues to dominate markets and play on economic confidence.
European shares .FTSE, which have suffered their worst run in over a month in the last few days as euro zone uncertainty has returned, were flat but MSCI's main global index .MIWD00000PUS was down around a third of a percent on the day.
"We are in a vacuum policy wise ahead of the Jackson Hole meeting and the (European Central Bank) meeting on September 6 so we are in a wait and see mode," said Saxo Bank chief economist Steen Jakobsen.
Federal Reserve Chairman Ben Bernanke and other central bank leaders meet in Jackson Hole, Wyoming, next week for an annual get-together that often hints at what monetary policy is to come.
"We are waiting to see whether we get QE3 (another round of asset buying from the Fed) and to see how the ECB is going play the promise that it will help the peripherals, so right now the market is just concentrating on technicals."

Read more: http://www.reuters.com/article/2012/08/24/us-markets-global-idUSBRE86F00620120824