Oil prices rise and stock markets weaken as U.S.-Iran tensions disrupt the Strait of Hormuz

Why does the Strait of Hormuz matter to markets?

It is a major chokepoint for global energy supplies. AP described it as a passageway for about 20% of the world's oil, and other market reports said investors were closely tracking ship movements through the strait because disruptions there can tighten supply and lift prices News18,Globe and Mail.

How did markets react immediately?

On Monday, oil prices surged while U.S. equity markets and futures moved lower. AP reported U.S. crude rose 6.3% and Brent gained 5.3%, while Wall Street futures fell before the open; other market reports also described declines in U.S. stocks tied to the renewed tensions News18,Age.

What changed by Tuesday?

Markets became somewhat less defensive as hopes emerged that talks between Washington and Tehran might resume. Reports said oil prices edged lower and some Asian stock indexes rose, although shipping through the Strait of Hormuz was still described as severely disrupted Independent,Business Standard,CNA.