So, here's what happens when you kill a Supreme Leader on a weekend: the oil market wakes up on Monday and decides it's time to party. Or panic. Or both.

Energy stocks and related ETFs absolutely rocketed in pre-market trading Monday, fueled by a sharp climb in Brent crude prices after joint U.S.-Israeli strikes over the weekend killed Iran's Supreme Leader, Ayatollah Ali Khamenei. Traders scrambled for any energy exposure they could find, which is the financial version of stocking up on bottled water before a hurricane.

Adding fuel to the fire, President Donald Trump suggested that the current military campaign—which has the rather dramatic codename "Operation Epic Fury"—could persist for "four to five weeks, if necessary." When the commander-in-chief starts talking about sustained operations, markets tend to price in a sustained risk premium.

Crude's 8% Jump and the Supply Fear

Brent crude, the global benchmark, surged roughly 8% to about $78.70 a barrel. That's a sharp, meaningful move that screams one thing to traders: potential supply disruption. The Middle East is the world's gas station, and when someone starts a fight in the parking lot, everyone worries the pumps might get shut off.

The Big Oil Players Charge Ahead

The majors didn't waste any time. Here's a look at how some of the biggest names were moving before the bell:

It's a simple equation for these giants: higher oil prices generally mean higher profits. When crude jumps 8%, their reserves in the ground suddenly become more valuable.

ETFs Catch the Crude Wave

For investors who want the oil price move without picking a specific company, exchange-traded funds were also riding the wave. These funds track oil futures or baskets of energy stocks, offering a cleaner bet on the commodity itself.

The ProShares K-1 Free Crude Oil ETF (OILK) was the standout, up nearly 9%. It's a reminder that in volatile moves, some of the more niche products can see exaggerated swings.

The Producers Post Huge Gains

While the majors moved, some of the biggest pre-market pops came from the smaller and mid-sized exploration and production companies. These stocks are often more leveraged to the price of oil—when it goes up, their earnings potential can skyrocket.

Notice a pattern? Nearly everything is up 5% or more. SM Energy (SM) leading the pack with a 9.25% gain shows just how powerful the fear-of-missing-out trade can be when geopolitical tensions flare.

Why Everyone is Watching the Strait of Hormuz

Behind all these numbers is one very real, very narrow stretch of water: the Strait of Hormuz. It's the ultimate chokepoint, responsible for moving over 27% of the world's seaborne crude oil. If you're looking for the single biggest risk to global oil supply, this is it.

The instability has only been exacerbated by Iran's retaliatory missile strikes against U.S. bases in the UAE, Bahrain, Kuwait, Qatar, and other countries. It's a classic escalation cycle—one side acts, the other responds, and traders in New York and London frantically reprice risk.

So, when you see oil prices jump 8% and a dozen energy stocks up 5-9% before the market even opens, it's not just speculation. It's the market calculating the odds that a critical shipping lane gets disrupted, and deciding it's better to buy first and ask questions later. Whether "Operation Epic Fury" lasts weeks or longer, the oil risk premium is back with a vengeance.