Fighting between the United States and Iran escalated, pushing oil prices higher on Sunday.
U.S. stock-index futures remained mostly flat during the same period.
Investors weighed the geopolitical tensions alongside a busy week of corporate earnings.
Major technology companies are scheduled to report results in the coming days.
The conflict intensified in the Middle East, raising concerns about global supply disruptions.
Crude prices surged as traders priced in heightened risk in the region.
The energy market reacted sharply to news of continued military operations.
