The US military action may cause oil prices to have a knee-jerk reaction at Monday's opening.

Investors say that the US attack on Iran's nuclear facilities on Saturday could lead to a knee-jerk reaction in global markets when they reopen, pushing up oil prices and triggering a flight to safety. They are evaluating how the latest escalation in tensions will have a chain reaction on the global economy. Potomac River Capital CEO Mark Spindel said, "I think the markets will initially panic, and I think oil prices will rise at the open. I think this uncertainty will hang over the markets because Americans everywhere now face risks. This will increase uncertainty and volatility, especially in the oil market." However, Spindel said there is time to digest this news before the markets open.