The reactivation of the naval blockade and the sudden escalation of military tension in the Strait of Hormuz have shattered expectations of a short-term agreement with Iran, immediately rattling financial and institutional markets. According to the latest Middle East Weekly Tracker report published by Natixis Corporate and Investment Banking (CIB) and authored by economists Alicia García Herrero and Jeremy Ji, the surge in war risk is already translating into sharp upward pressure on oil, widespread losses across Gulf equities, and rising sovereign risk premiums.
Impact on Equities and Institutional Investment Flows
Gulf Cooperation Council (GCC) stock markets have reacted downward to the return of geopolitical uncertainty. Dubai equities in particular recorded a decline of around 1.5% in the week prior to July 15, penalized by their high commercial, tourism, and financial exposure to physical disruptions in the Strait.
Furthermore, the Natixis CIB report notes a detrimental shift in cross-border capital behavior. As stated in their report: “Foreign flows remained mildly negative, with a net outflow of $11 million from Dubai and Saudi equity markets last week. With the blockade back, these capital outflows are more likely to increase rather than reverse.”
Crude at $85 and Stress in Credit Markets (CDS)
The paralysis of this key maritime route for international trade has driven commodities significantly higher. Brent crude futures scaled to $85 per barrel on July 16, reacting to the U.S. Navy’s re-establishment of the blockade on Iranian ports and the closure of Hormuz decreed by Iran’s Islamic Revolutionary Guard Corps (IRGC).
In the fixed income and credit derivatives markets, 5-year Credit Default Swap (CDS) spreads for GCC nations have widened noticeably. Analysts at the French institution highlight that Bahrain continues to be the sovereign adjusting upward most rapidly—increasing its cost of hedging against default—due to its status as host to U.S. bases, which directly exposes it to absorbing Iranian retaliation.
Graph taken from the Natixis Report. Source: Natixis, Bloomberg, and LSEG
Activity Collapse in the Real Economy
The physical impact of the conflict is already fully quantifiable in freight transport data compiled by Natixis. Daily vessel traffic through the Strait of Hormuz has suffered a severe collapse, plummeting to just 12 commercial ships on July 13, compared to the 25 recorded barely a week earlier. Conversely, scheduled and monitored flights at Dubai and Doha airports show minimal variation, confirming that, for now, direct economic damage remains almost exclusively concentrated in maritime transport.
The report details a succession of critical events occurring between July 11 and July 16, 2026, including direct attacks on United Arab Emirates tankers and targeted bombardments by allied forces. For the firm, political resistance to withdrawing troops from conflict zones and the lack of consensus over the control of shipping routes will keep any definitive short-term agreement completely stalled, shaping a volatile landscape that global fund managers and emerging market investors will need to monitor closely in the coming weeks.
Graph taken from the Natixis Report. Source: Natixis
