The market pullback follows reports of fresh Iranian strikes on commercial vessels in the Strait of Hormuz, triggering retaliatory U.S. military action. Investors reacted swiftly, pushing shares of Delta Air Lines, United Airlines, Southwest Airlines, and American Airlines down by roughly 2% to 3%. The cruise sector mirrored this volatility, with Carnival, Royal Caribbean Group, and Norwegian Cruise Line Holdings posting similar losses.

This shift in geopolitical stability has immediate consequences for fuel-sensitive industries. Brent crude futures surged past prewar levels in response to the news, erasing the relief gains recorded during the brief truce. For carriers and cruise lines, the return of high oil prices threatens the margins that had only just begun to stabilize as tensions initially cooled.