Stock markets have seesawed this week ahead of Powell's speech at an annual gathering of central bankers in Jackson Hole, Wyoming, later on Friday. AFP
London's FTSE 100 gained 0.3 percent to 8,314.62 points, while the Paris CAC 40 added almost 0.4 points to 7,550.16 and Frankfurt's DAX advanced by 0.3 percent to 18,548.79.
Stock markets have seesawed this week ahead of Powell's speech at an annual gathering of central bankers in Jackson Hole, Wyoming, later on Friday.
Investors are hoping Powell can provide more clues about an expected interest-rate cut by the Fed at its policy meeting next month.
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