Investors have all eyes fixed on the Federal Reserve’s annual economic symposium in Jackson Hole, Wyo., as the Fed charts the future direction of the monetary policy in what could be a defining moment for the market’s summer story.

U.S. stock index futures edged higher on Friday, recovering slightly from the previous session's losses as investors awaited Federal Reserve Chair Jerome Powell's address at the Jackson Hole Symposium for clues on the interest-rate path.