Weekly Market Update September 21, 2026

The Federal Reserve raised the benchmark short-term interest rate at its September Federal Open Market Committee (FOMC) meeting. The quarter-point increase, to 3.75%-4.00%, was the first move by the central bank since last December, when it cut the interest rate. Since then, a reacceleration in inflation, exacerbated by higher oil prices, has prompted the lead bank to change course. 

Inflation, albeit steadying in terms of the rate, is still running above the Fed’s target rate of 2.0%. The August Consumer Price Index (CPI) and core CPI, the latter of which excludes food and energy components, increased 0.4% and 0.3%, respectively, on a month-to-month basis. From a one year perspective, the CPI and core CPI rose 3.4% and 2.4%, respectively. The 12-month core figure came in below forecast, which was encouraging. However, energy prices are on the rise again, and the resultant higher cost of oil will likely put upward pressure on prices in the coming months. 

Hostilities in the Middle East have picked up. Indeed, the United States’ severe economic sanctions against Iran have brought retaliatory military attacks by the rogue nation and its proxies against the U.S. and its allies in the region. The resulting disruptions to oil shipments, along with recent Ukrainian attacks on Russian oil refineries, have pushed global oil prices above $100 a barrel. A continuation of this trend would make it more expensive for both businesses and consumers to function. On point, diesel fuel, used to power machinery and trucks, among other things, recently surged to $6.25 a gallon, up more than 55% since the start of the Iran war. 

Treasury security yields have climbed, with rates on the 10-year note recently topping 5.00%. Rising oil prices, along with broader inflation concerns, worries about the massive corporate debt issued to fund spending on artificial intelligence (AI) infrastructure, and the rising national debt level have weakened demand for bonds and pushed yields, which move inversely to price, to their highest levels since 2007. 

Conclusion: Market volatility picked up in September, prompted by higher oil prices and bond yields. Given this backdrop, holding a well-diversified portfolio, consisting mostly of high-quality stocks with good growth prospects and cash flows, may prove astute.

Source: Valueline.com