Below the Trendline: Oil Price Shocks, the Strait of Hormuz Crisis, and the Disrupted Growth Trajectory of Global Health Sector Equities (2024–2026)

The escalation of armed conflict in the Middle East and the resulting disruption to oil transit through the Strait of Hormuz have produced a major commodity price shock. Brent crude oil prices surged from approximately $73.86 per barrel in December 2024 to over $112 per barrel by March 2026, a rise of roughly 52 percent in under 15 months. This study investigates the extent to which this geopolitical energy shock has disrupted the growth trajectory of global health sector equities, using the Health Care Select Sector SPDR ETF (XLV) as a sector proxy benchmarked against the S&P 500. Employing a trend-deviation analytical framework, the study projects expected sector performance based on XLV's historical compound annual growth rate of 10.25 percent, then compares that projection against actual observed performance as of March 2026. Results indicate that XLV was trading approximately 4.5 percent below its expected trendline value, compared to a 1.8 percent shortfall observed in the S&P 500. This differential—an excess disruption penalty of roughly 2.7 percentage points—is attributed to the sector's dual exposure to oil-price-sensitive cost inputs and demand-side compression driven by household budget constraints during inflationary episodes. The findings indicate that energy shocks are not neutral for defensive sectors, with implications for portfolio strategy, pharmaceutical supply chain policy, and health equity in oil-importing economies.