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.

Future tied to Wall Street's main stock indexes inched higher on Friday in the run-up to Federal Reserve Chair Jerome Powell's speech at the Jackson Hole Economic Symposium, which would shed more light on the interest-rate path.