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Chart of the Week

Weekly chart using economic data to address timely market topics from the Wells Fargo Investment Institute Global Investment Strategy team.

September 15, 2026

Mason Mendez, Global Real Assets Analyst

Food inflation risks strengthen the case for commodities

This bar chart shows the year-to-date (as of August 31, 2026) price return for various agricultural commodities and inputs: Diesel (57%), Wheat (47%), Soybean oil (47%), Bloomberg Commodity Agriculture Index (25%), Grains (24%), Soybeans (24%), Sugar (19%), Corn (16%), Fertilizer (13%), Cocoa (10%), and Coffee (-1%).Sources: Bloomberg and Wells Fargo Investment Institute. Return data are from December 31, 2025, through August 31, 2026. Diesel: AAA National Average Diesel Price. Fertilizer: U.S. Gulf NOLA Urea Granular Spot Price. Wheat, soybean oil, soybeans, sugar, corn, cocoa, and coffee are based on generic front-month futures prices as of August 31, 2026. An index is unmanaged and not available for direct investment. Past performance is no guarantee of future results. Excerpted from Investment Strategy report (September 8).

Supply disruptions are fueling agricultural commodity gains

Growing disruptions in grain exports and elevated production costs are creating global supply concerns. Russia and Ukraine together accounted for roughly 30% of global wheat exports in 2025, with most shipments moving through the Black Sea. Since July, escalating attacks on grain terminals and shipping infrastructure have disrupted exports, raising concerns about whether supply can efficiently reach global markets.

Energy markets have also played a key role in the rally. Elevated diesel, fertilizer, and other farm-input costs have increased production expenses across the agricultural sector. As the chart shows, nearly every major agricultural commodity is posting double-digit gains year to date, while wheat prices have surged to their highest levels since 2022.

What it may mean for investors

In our view, these risks are unlikely to disappear anytime soon, as the path toward a resolution in the Russia-Ukraine war remains unclear and ongoing refining challenges drive elevated input costs for producers. Broad commodity exposure may offer a way to hedge against further increases in food and energy prices. We remain favorable on Commodities and view pullbacks as opportunities to add exposure, given our forecasts for additional upside in the Bloomberg Commodity Index through 2027.

Risk Considerations

Each asset class has its own risk and return characteristics. The level of risk associated with a particular investment or asset class generally correlates with the level of return the investment or asset class might achieve. The commodities markets are considered speculative, carry substantial risks, and have experienced periods of extreme volatility. Investing in a volatile and uncertain commodities market may cause a portfolio to rapidly increase or decrease in value which may result in greater share price volatility.

Definitions

Bloomberg Commodity Index is comprised of 22 exchange-traded futures on physical commodities and represents 20 commodities weighted to account for economic significance and market liquidity.

Bloomberg Agriculture Subindex is a commodity group subindex of the Bloomberg Commodity Index. It is composed of futures contracts on coffee, corn, cotton, soybeans, soybean oil, soybean meal, sugar and wheat. It reflects the return of the underlying commodity futures and is quoted in USD.

Bloomberg Grains Subindex is a commodity group subindex of the Bloomberg Commodity Index. It is composed of futures contracts on corn, soybeans and wheat. It reflects the return of underlying commodity futures price movements only and is quoted in USD.

An index is unmanaged and not available for direct investment.

General Disclosures

Global Investment Strategy (GIS) is a division of Wells Fargo Investment Institute, Inc. (WFII). WFII is a registered investment adviser and wholly owned subsidiary of Wells Fargo Bank, N.A., a bank affiliate of Wells Fargo & Company.

The information in this report was prepared by Global Investment Strategy. Opinions represent GIS’ opinion as of the date of this report and are for general information purposes only and are not intended to predict or guarantee the future performance of any individual security, market sector or the markets generally. GIS does not undertake to advise you of any change in its opinions or the information contained in this report. Wells Fargo & Company affiliates may issue reports or have opinions that are inconsistent with, and reach different conclusions from, this report.

The information contained herein constitutes general information and is not directed to, designed for, or individually tailored to, any particular investor or potential investor. This report is not intended to be a client-specific suitability or best interest analysis or recommendation, an offer to participate in any investment, or a recommendation to buy, hold or sell securities. Do not use this report as the sole basis for investment decisions. Do not select an asset class or investment product based on performance alone. Consider all relevant information, including your existing portfolio, investment objectives, risk tolerance, liquidity needs and investment time horizon. The material contained herein has been prepared from sources and data we believe to be reliable but we make no guarantee to its accuracy or completeness.

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