Investors are tracking talks aimed at ending the Russia-Ukraine war and awaiting Federal Reserve Chair Jerome Powell's speech at Jackson Hole at the end of the week.

Wall Street and European shares ended flat to modestly lower on Monday ahead of a key central bank gathering later in the week that likely will determine the future path of U.S. interest rate policy.

U.S. stock index futures hesitated following a recent rally as investors turned their attention to earnings reports from major retailers and a central bank conference in Jackson Hole. Geopolitical developments,

Wall Street ticked modestly lower ahead of U.S. President Donald Trump’s meeting with Ukrainian President Volodymyr Zelenskyy and other European leaders.