The Real Inflation Threat Isn't in the CPI: Hormuz Strait Shutdown Risk Looms

The June CPI report delivered the biggest inflation surprise of the year, with headline prices rising 3.5% year-over-year, down from 4.2% in May. However, this disinflation trend was largely driven by energy prices, as WTI crude oil fell 20.6% post-ceasefire. While the data suggests a potential peak in inflation, Moody's chief economist Mark Zandi warns that a shutdown of the Strait of Hormuz could reverse these gains. Stripping out energy, the core Personal Consumption Expenditures (PCE) price index rose 3.4% in May, its highest level since October 2023, signaling persistent underlying inflationary pressures. The 10-year Treasury yield climbed to 4.58% despite the cooling CPI, reflecting investor skepticism about a sustained decline. Meanwhile, gasoline prices dropped from $4.50 to $3.85 per gallon as oil prices retreated. Analysts highlight that tariff pass-through and tight labor markets are keeping core inflation above the Fed's 2% target. If geopolitical tensions escalate, the temporary relief from energy prices could evaporate, reigniting inflationary risks. Markets are particularly wary of supply chain disruptions and energy price volatility, which could amplify cost pressures across sectors.

Core PCE and Energy Dynamics: Inflation's Visible Face

■June CPI headline inflation fell to 3.5%, but this was primarily due to energy price declines.

■Core PCE rose 3.4% year-over-year in May, the highest level since October 2023.

■WTI crude oil prices fell 30.1% post-ceasefire, directly impacting gasoline prices.

■Vanguard's 2026 outlook warns that tariff pass-through and labor market tightness will keep core inflation elevated.

Bond Markets and Geopolitical Risks: Divergent Signals

■The 10-year Treasury yield rose to 4.58%, signaling investor caution despite CPI cooling.

■Investors remain skeptical about inflation peaking, citing Hormuz Strait shutdown risks.

■Commodity price swings are amplifying supply chain risks and market volatility.

Defne Aydın: Markets are increasingly recognizing that inflation cannot be measured solely through technical indicators. A Hormuz Strait closure poses a significant risk, especially for energy-dependent European economies. The ECB's monetary policy must adapt to address such geopolitical shocks, while tariff policies and labor costs continue to underpin core inflation. This environment demands heightened vigilance from investors amid potential volatility.