Exxon Mobil Corporation (XOM) has issued a warning regarding its third-quarter financial results, indicating a negative impact due to declining oil prices and refining margins from the second quarter. In its regulatory filing, XOM outlined the potential effects on its earnings across various segments.The company anticipates a decrease in crude prices to reduce $600 million to$1 billion in upstream profit. Similarly, changes in industry margins for energy products are expected to have a comparable impact. T ...