It would be havoc right now if markets were open and it might yet be when they open in less than 24 hours.
Bitcoin is down more than 6% in what could be a sign of what's to come. Bitcoin finished Friday at $67,138 but it's now trading down more than $4200 to $62,898.
Broader markets will have a bit of time to digest this but I don't see any way the dust settles by this time tomorrow.
Though it seems as though Iran hopes that is the case: