Oil price stagflation fears reshape global markets as Hormuz disruption deepens
Brent crude touched $100 a barrel intraday in early September as the Strait of Hormuz disruption entered its third month, pushing oil price stagflation fears to the forefront of global asset pricing. WTI settled at $91.01 a barrel, and the spike has already reshaped expectations for central-bank policy, equity valuations and commodity hedging across both developed and emerging markets.
The Strait of Hormuz carries roughly 20% of global oil trade, about 16 million barrels a day, and repeated closures since June have turned a short-term geopolitical shock into a persistent supply-risk variable. Iran's parliament published a strategic management plan in early August that would ban U.S. and Israeli vessels from transiting the strait, and Revolutionary Guard naval commanders have described the waterway as effectively closed. The resulting supply interruption sent domestic Chinese crude futures limit-up and pushed ultra-large tanker rates on the Middle East-to-Asia route toward $500,000 a day.
Fed tightening expectations harden on energy-driven inflation
The oil price surge has fundamentally altered the Federal Reserve's policy trajectory. Markets now price a roughly 50-65% probability of a September rate hike, reversing earlier expectations for a pause or even a cut. The 10-year Treasury yield climbed to around 4.75%, and a broad global bond sell-off has followed.
The transmission channel is direct: higher energy costs feed into core inflation, which tightens the Fed's room for maneuver and raises the discount rate applied to growth-oriented equities worldwide. Methanol, ethylene glycol and other petrochemical commodities surged in tandem, underscoring how deeply the energy shock is propagating through industrial supply chains.
A-share sentiment shift accelerates as turnover collapses
China's equity market has entered a pronounced rotation phase. Daily A-share turnover fell from a peak of 2.66 trillion yuan on August 5 to 1.76 trillion yuan by September 3, marking two consecutive sessions below the 2 trillion threshold. The board-lock success rate, a gauge of speculative momentum, collapsed from 93% on September 1 to just 57% two days later, as high-flying momentum names including Aili Home and Shenzhen China hit limit-down.
The A-share sentiment shift reflects a broader breakdown in the single-theme AI rally that had dominated positioning since mid-year. Funds are rotating away from unprofitable concept stocks toward a barbell allocation: one end anchored in upstream materials with verified pricing power, the other in geopolitical hedges.
MLCC prices have risen more than 30%, while copper-clad laminate has seen seven price hikes totaling over 100% year-to-date. At the same time, gold, defense and oil-and-gas names have attracted sustained inflows as inflation and conflict hedges. Goldman Sachs reiterated its forecast that gold could reach $4,900 an ounce by the end of 2026, as investors increasingly use gold call options to hedge macro and geopolitical risk.
US China policy divergence widens
Beijing has moved in the opposite direction from Washington. The People's Bank of China reaffirmed its moderately loose monetary stance at its mid-year work conference, pledging ample liquidity and counter-cyclical support. The PBOC conducted 14 trillion yuan in outright reverse-repo operations to maintain system liquidity, while the Ministry of Finance expanded fiscal-consumption subsidies to cover credit-card installments and personal consumer loans at a 1 percentage-point annualized subsidy rate.
CATL announced a 40 billion yuan buyback, the largest in A-share history, signaling corporate confidence in domestic policy support. The policy contrast is stark: China is easing fiscal and monetary conditions while the U.S. tightens, creating a relative liquidity buffer for A-shares even as external tightening pressures transmit through exchange rates and risk appetite.
AI supply chain enters an earnings-verification phase
The AI investment theme has not disappeared, but its character has changed. Dell raised its revenue guidance on strong AI server demand, and Snowflake validated application-layer monetization, but capital is rotating away from hardware beta toward names that can demonstrate order-book conversion.
In A-shares, the shift is visible in the divergence between upstream and downstream performance. High-tech manufacturing profits rose 50.1% year-over-year in January-July, contributing 9.6 percentage points to total industrial profit growth, a historic tilt that underscores where real earnings power resides. The market is now demanding order and pricing verification rather than rewarding broad AI exposure.
What to watch next
The critical variables are the Strait of Hormuz transit status and whether Brent crude stabilizes above $90 or breaks toward $110, the September Fed meeting dot plot, and whether the 10-year Treasury yield breaches 5.0%, a level that would trigger broader systemic risk reassessment. Domestically, A-share turnover needs to stabilize above 1.8 trillion yuan to confirm that risk appetite is finding a floor; a drop below 1.5 trillion would signal a defensive posture across the board.