The market is also looking to what impact speeches at the Jackson Hole central bankers' symposium are likely to have on gold prices. "The Jackson Hole symposium is the main event for [Friday]," said Colin Tan, an analyst at Deutsche Bank. "We also have an all-star line-up of central bank governors this year. "All eyes will clearly be on the Yellen's key note address," he said. "But this time round we'll also hear from Draghi at lunchtime, Kuroda from the Bank of Japan, and Broadbent from the Bank of England.
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