Shortly before the cash market opening, investors will get the opportunity to react to the latest data on Core PCE prices, which is often called the Fed's preferred inflation gauge. "While expectations remain high by historical standards, the modest curtailment in optimism suggests that consumers do not foresee the economy gaining much momentum in the months ahead." Friday's second-quarter GDP report was relatively strong, but what do you expect when you cut taxes then threaten tariffs that encourage producers to sell all they can before prices increase.