Here are the main stock market winners and losers following the Iran attacks

• The conflict with Iran has rattled markets, with stocks down and oil spiking.
• Gold rose as fresh geopolitical conflict added to the metal's bull case.
• Energy and defense stocks rallied, while travel shares among airlines, cruises, and hotels dropped.

Markets have been roiled by the attacks against Iran by the US and Israel over the weekend, with a handful of winners and losers emerging in the immediate aftermath.

Investors are concerned that the attacks, which killed Iran's Supreme Leader Ali Khamenei, could drag on into a larger regional conflict that sends energy prices spiraling higher. The Strait of Hormuz is a key area of concern, as it carries about 20% of the world's oil.

In the US, investors largely dumped stocks and flocked to areas of safety, with the Dow dropping 500 points early Monday. Here were the market's most notable movers.

The winners

Energy stocks were among the market's biggest gainers as oil prices jumped. Brent crude, the international benchmark, surged 7% Monday morning to trade at $77 a barrel, its highest level in about eight months.

Here were the biggest movers in the sector:

• SM Energy Co: +6%
• ConocoPhillips: +6%
• EOG Resources: +4%
• Exxon Mobil Corp: +4%
• Chevron: +2%

Defense stocks also rose as investors took in the potential for extended military action. The iShares US Aerospace & Defense ETF rose 2%.

• Lockheed Martin: +4%
• RTX: +4%
• Northrup Grumman: +4%
• General Dynamics: +2%

Gold also climbed higher as investors flocked into alternative assets. The metal was trading at about $5,351 an ounce, up 2%.

Geopolitical strife has been at the heart of gold's bull case over the last year, and analysts say it could extend gains amid the latest conflict. Commentators on Monday said they see the precious metal closing in on $6,000 an ounce in the months ahead.

The losers

Travel stocks were widely impacted at the start of trading on Monday, with widespread air traffic disruptions as a result of conflict.

Global airline stocks tumbled, with the US Global Jets ETF down nearly 4% early Monday.

• Finnair: -10%
• Air France: -8%
• American Airlines: -6%
• Deutsche Lufthansa: -5%
• Ryanair Holdings: -3%
• Delta: -3%
• United Airlines: -3%

Cruise stocks sank amid uncertainty hanging over the travel and tourism sector in the Middle East. Dubai, one of the world's largest luxury tourist hubs, was impacted by the attacks over the weekend as Iran retaliated against US regional allies.

• Norwegian Cruise Line: -12%
• Carnival Corporation: -9%
• Royal Caribbean: -7%

Hotel stocks also fell as the outlook for global tourism dimmed.

• Hyatt Hotels: -5%
• Hilton Worldwide: -4%
• Marriott International: -4%