Saudi Arabia's benchmark equity index declined 2.7% on October 25, its worst session in approximately 18 months, after falling as much as 3.4% intraday.
The Saudi-led coalition reported intercepting missiles and drones over Riyadh and southern areas, while Yemen's Houthis continued threatening Saudi infrastructure.
The Houthis had claimed attacks on oil facilities and airports the previous day, although the extent of damage to individual facilities was not independently established.
Saudi Aramco shares declined 0.9%, while Egypt's benchmark equity index fell 3.6% as regional investors reassessed geopolitical risks. Reuters
Source: Reuters — Gulf market reaction, October 25
Why it matters strategically
Saudi Arabia's energy infrastructure has become increasingly important to regional and global supply resilience.
The East-West Pipeline and Red Sea export facilities provide alternatives to routes exposed to disruption around the Strait of Hormuz.
However, alternative infrastructure can itself become vulnerable.
This creates a critical strategic dependency.
An energy company may diversify away from one geographical chokepoint only to concentrate operational risk in another.
The economic consequences depend on actual infrastructure damage, repair duration, export flexibility, and available inventories.