Global Oil Stockpiles Approaching Record Lows as Hormuz Blockade Continues; UBS: Depletion by End of May; JPMorgan: Critical Levels by September; S&P 500 Falls 1.1% — Day 78

CNBC reported on May 16, 2026 (Day 78) that global oil stockpiles are approaching record lows after 78 days of Hormuz disruption, with multiple investment banks forecasting a supply crisis in the weeks ahead if the blockade continues. UBS analysts projected inventories will hit all-time lows by the end of May 2026. JPMorgan forecast that stockpiles will fall to 6.8 billion barrels by September if the Strait of Hormuz remains effectively closed, a level analysts describe as critically low for global energy security. Rapidan Energy Group warned that refined product inventories — particularly diesel and jet fuel — will reach critical levels in July–August, raising the prospect of product shortages cascading through global supply chains. The data context: inventories fell approximately 250 million barrels (at a rate of 4 million barrels per day) over March–April alone. OPEC separately warned that the Hormuz closure has cut OPEC oil production by 30%. The S&P 500 fell 1.1% from record highs on May 16, the first significant pullback since April's rally on initial ceasefire hopes, as stockpile data weighed on market sentiment. CENTCOM reported 78 commercial ships redirected and 4 vessels disabled in the course of enforcing blockade compliance. Approximately 1,550 vessels remain stranded with an estimated 22,500 mariners trapped in the Persian Gulf and adjacent waters. Commercial traffic through the strait continues at roughly 5% of pre-conflict levels despite the Trump-Xi May 14 agreement that Hormuz 'must remain open.'