Gulf markets slide as US-Iran hostilities flare up again, oil prices whipsaw

The fragile ceasefire between the US and Iran lasted about as long as a New Year’s resolution. With hostilities resuming on July 8, Gulf stock markets are now paying the price, and investors across the region are scrambling to reassess risk in one of the world’s most strategically important corridors for global trade and energy. Dubai’s Financial Market General Index slipped 0.2% to 5,991 on July 9, extending a streak of losses that has rattled confidence across the Gulf. The Qatar Stock Exchange, which had temporarily suspended trading amid the chaos, has since resumed operations. What happened and why it matters for markets The broader Iran conflict kicked off on February 28, 2026, but a ceasefire had offered a brief window of relative calm. That window slammed shut when Iranian forces struck commercial shipping vessels in the Strait of Hormuz, prompting the US to respond with renewed airstrikes. The Strait of Hormuz is the narrow waterway through which roughly a fifth of the world’s oil supply flows daily. Disagreements over oil shipping routes were reportedly the fault line that cracked the ceasefire apart. Brent crude, the global oil benchmark, has been swinging wildly in resp...