Commodity Index: Everything You Need to Know

The prices for commodities, such as oil, natural gas, gold and grains, have a significant impact on the economy and capital markets. And how do investors and financial media monitor the price movements for commodities? The short answer is commodity indexes. 

Learn more about commodity indexes, including how they work, how investors can use them and examples of the major commodity indexes. 

What Is a Commodity Index? 

A commodity index is a benchmark or indicator that tracks the performance of a specific group of commodities. The index serves as a benchmark or reference point to measure the overall price movements and performance of commodities in various sectors such as energy, metals, agriculture, or as a broad basket of multiple commodities. 

How Do Commodity Indexes Work? 

Commodity indexes are typically constructed using a weighted average or other methodologies to reflect the relative importance of different commodities within the index. The weights may be based on factors like market value, production levels or other criteria. These indexes provide investors and market participants with a standardized way to monitor and analyze the performance of the commodities market as a whole or within specific sectors. 

What Are Examples of the Major Commodity Indexes? 

Commodity indexes can be broad-based, covering a wide range of commodities, or narrow-focused, concentrating on a specific sector or subset of commodities. Each index may have its own methodology, composition and weighting scheme. Investors can use these indexes as benchmarks or references for analyzing the performance of the commodities market. 

Here are some examples of major market commodity indexes: 

• Bloomberg Commodity Index (BCOM): The Bloomberg Commodity Index is a widely followed index that tracks the performance of a diversified basket of commodity futures contracts across various sectors, including energy, metals and agriculture. It represents a broad view of the global commodity markets. 
• S&P GSCI: Formerly known as the Goldman Sachs Commodity Index, the S&P GSCI is one of the most recognized commodity indexes. It measures the performance of a diversified group of commodity futures contracts across energy, industrial metals, precious metals, agriculture and livestock sectors. The index is designed to reflect the economic significance of each commodity in the global economy. 
• Dow Jones Commodity Index (DJCI): The Dow Jones Commodity Index is another well-known commodity index that covers various commodity sectors, including energy, metals and agriculture. It aims to provide a representative view of the global commodity market by including futures contracts on physical commodities. 
• Rogers International Commodity Index (RICI): The Rogers International Commodity Index is a broadly diversified index created by renowned investor Jim Rogers. It includes a basket of commodities across the energy, metals, agriculture and natural resources sectors. The RICI is known for its focus on the long-term trends and fundamentals of the commodity markets. 
• Thomson Reuters/CoreCommodity CRB Index: The CRB Index is one of the oldest commodity indexes and tracks the performance of a basket of commodity futures contracts. It covers sectors such as energy, metals, agriculture and livestock. The index aims to provide a measure of overall commodity price movements. 

How Do Investors Use Commodity Indexes? 

Investors can use commodity indexes to gain exposure to commodity markets or as a benchmark for evaluating the performance of commodity-focused investment products such as commodity mutual funds, exchange-traded funds (ETFs) or futures contracts.  

Investors can use commodity indexes in several ways: 

• Benchmarking: Commodity indexes serve as benchmarks against which the performance of commodity-focused investment products can be evaluated. Investors can compare the returns of commodity mutual funds, ETFs or other commodity-related investments with the performance of a relevant commodity index. This helps assess the effectiveness of the investment strategy and the skill of the fund manager. 
• Performance analysis: Commodity indexes enable investors to analyze the historical performance and trends of different commodities.  
• Investing in commodity funds: Commodity indexes can be replicated by investment products such as commodity mutual funds or ETFs. Investors can invest directly in these funds, which aim to track the performance of the underlying commodity index. This allows individuals to gain exposure to a diversified basket of commodities without directly investing in physical commodities or futures contracts. 

How Do Investors Buy Commodities? 

Although investors can’t invest directly in a commodity index, they can gain access to single commodities or a basket of commodities through a range of security types, including futures contracts, ETFs, mutual funds, exchange-traded notes (ETNs) and physical ownership. 

Investors have several options to buy commodities: 

• Futures contracts: One way to invest in commodities is through futures contracts. Futures contracts represent agreements to buy or sell a specific quantity of a commodity at a predetermined price and date in the future. Investors can participate in commodity futures trading by opening an account with a futures broker or trading platform. 
• ETFs: Commodity ETFs provide exposure to commodities without directly owning the physical assets. These ETFs typically invest in commodity futures contracts or other derivative instruments to track the price movements of specific commodities or commodity indexes. Investors can buy and sell shares of commodity ETFs through brokerage accounts, like trading stocks. 
• Mutual funds: Commodity mutual funds pool investors' money to invest in a diversified portfolio of commodities or commodity-related securities. These funds can invest in commodity futures, stocks of companies in the commodity sector, or other commodity-related investments. Investors can buy shares of commodity mutual funds directly from the fund company or through brokerage accounts. 
• Exchange-traded notes: ETNs are debt securities issued by financial institutions that track the performance of a specific commodity or commodity index. Investors can buy ETNs through brokerage accounts. ETNs are different from ETFs, as they are debt instruments rather than funds, and their returns are linked to the performance of an underlying index. 
• Physical ownership: Some investors choose to own physical commodities such as gold, silver or agricultural products. This typically involves purchasing bullion, coins or other physical forms of the commodity. Physical ownership of commodities may require specialized storage and security arrangements. 

Bottom Line 

A commodity index can be used to track the price movement of a particular commodity, such as oil, gold or wheat, or the price movement of a broad basket of commodities. Although investors can’t invest directly in an index, they can gain exposure to its components through the use of various investment securities, including futures contracts, ETFs, ETNs and mutual funds.  

It's important to note that investing in commodities can be associated with unique risks and considerations, including price volatility, supply and demand factors, geopolitical events, weather conditions and regulatory changes. Therefore, individuals interested in investing in commodities or commodity-based products should carefully evaluate their risk tolerance and financial goals before making investment decisions.