Updated for the 2026 CFA® Level I curriculum.
Commodities are physical goods like oil, copper, wheat, and cattle that trade in global markets. CFA Level I tests whether you can identify commodity categories and explain how the chosen investment form changes your return and risk.
A candidate might see a fact pattern comparing physical ownership with futures exposure and need to explain why the outcomes differ. This note separates the commodity's economics from the access form's mechanics.
Quick Answer
A commodity investment gives exposure to raw materials such as energy, metals, agriculture, or livestock. Commodities generate no contractual income, so returns come only from price changes and, for derivative-based exposure, from the futures curve. Storage cost, financing cost, and convenience yield explain why futures prices differ from spot prices. The access form chosen, physical, futures, producer equity, or pooled fund, adds its own risk and return characteristics on top of the underlying commodity.
Key Takeaways
Commodities fall into four broad categories: energy, metals, agriculture, and livestock.
Investors can gain exposure through physical ownership, futures or derivatives, producer equity, or pooled funds.
Commodities pay no dividends or interest. Returns come from price change alone, or price change plus roll yield for derivative positions.
Storage cost, financing cost, and convenience yield connect spot prices to futures prices.
A futures curve in contango or backwardation can create a roll effect that changes investor returns.
Commodity prices are volatile, cyclical, and sensitive to inflation, weather, and geopolitical events.
Producer equity adds company-specific and equity-market risk that pure commodity exposure does not carry.
What You Need to Know for CFA Level I
Identify which category, energy, metals, agriculture, or livestock, a given commodity belongs to.
Distinguish physical ownership from derivative, producer-equity, and pooled-vehicle exposure.
Explain why commodities generate no contractual income.
Describe spot price, storage cost, financing cost, and convenience yield at a conceptual level.
Explain how contango and backwardation can create a roll effect for futures-based investors.
Connect inflation sensitivity, cyclicality, and volatility to commodity investment characteristics.
Recognize that portfolio-level diversification comparisons belong to a separate note.
Commodity Categories and Economic Features
Commodities group into four categories. Each category responds to different supply and demand forces, which is why price behavior varies across the asset class.
Category | Supply Driver | Demand Driver | Main Risk |
|---|---|---|---|
Energy | Extraction capacity, OPEC decisions, geopolitical events | Industrial output, transportation, seasonal heating and cooling | Sharp price swings from supply disruption |
Metals (industrial and precious) | Mine output, refining capacity, recycling | Construction, manufacturing, safe-haven demand | Long production lead times |
Agriculture | Planted acreage, weather, growing season length | Population growth, biofuel use, food demand | Weather and crop-yield uncertainty |
Livestock | Herd size, feed costs, breeding cycles | Consumer meat demand, export markets | Disease outbreaks and feed-cost swings |
Most commodities trade through standardized global contracts, which supports liquidity and price transparency. Supply often reacts slowly because production takes time to expand or contract. This lag, combined with variable demand, is a key reason commodity prices move sharply over short periods.
Ways to Invest in Commodities
The same commodity theme can produce different investment outcomes depending on the access form. Separating the underlying commodity from the vehicle is the core skill this LOS tests.
Form | Exposure | Income | Liquidity | Extra Risk |
|---|---|---|---|---|
Physical ownership | Direct | None | Low | Storage, insurance, transport |
Futures or derivatives | Indirect, price-linked | None from the commodity | High | Roll effect, collateral management |
Producer equity | Indirect, company-linked | Possible dividends | High | Company risk, equity-market risk |
Pooled funds | Indirect, index-linked | Depends on structure | High | Manager and structural risk |
Physical ownership gives the purest exposure but adds storage and insurance costs. Futures-based exposure avoids storage but introduces roll effects tied to the futures curve. Producer equity, such as shares in a mining or energy company, adds company performance and stock-market risk on top of the commodity theme. Pooled funds add manager and structural considerations depending on how the fund is built.
Commodity Pricing and Futures Context
Spot price is the price for immediate delivery. Futures price is the price agreed today for delivery at a future date. The gap between them depends on storage cost, financing cost, and convenience yield.
Convenience yield is the benefit of holding the physical commodity now, such as avoiding a production shortage. It is not cash paid to an investor. It only matters to someone who uses the physical commodity in production or trade.
When futures prices rise with maturity, the market is in contango. When futures prices fall with maturity, the market is in backwardation. An investor who continually replaces (rolls) an expiring futures contract with a longer-dated one earns a negative roll effect in contango and a positive roll effect in backwardation. This is why a futures-based investor's return can differ meaningfully from the change in spot price.
Commodity Investment Characteristics and Risks
Commodity characteristics vary by sector and access form.
Benefit | Condition | Limitation |
|---|---|---|
Potential inflation hedge | Works best for energy and some metals during demand-driven inflation | Weak or inconsistent for agriculture and livestock |
Diversification versus equities and bonds | Correlation shifts across market cycles | Can rise during equity stress instead of falling |
Direct exposure to global growth | Useful in cyclical upswings | Sharp downside during demand slowdowns |
Commodities carry no contractual cash flow. Their return depends entirely on price change, plus roll effects for derivative positions. Prices are cyclical, tied to global growth, and sensitive to weather, geopolitical events, and regulation. Volatility is generally higher than for traditional equity or fixed income exposure.
Commodity Cost-of-Carry Concept
The relationship among spot price, financing cost, storage cost, and convenience yield explains the gap between spot and futures prices.
Where:
= futures price
= spot price
= financing (interest) cost, expressed as a rate over the contract period
= storage cost, expressed as a rate over the contract period
= convenience yield, expressed as a rate over the contract period
This relationship is conceptual for Level I. It shows that when storage and financing costs dominate, futures prices tend to sit above spot (contango). When convenience yield dominates, for example during a supply shortage, futures prices can sit below spot (backwardation). Real markets add frictions such as transport costs and quality differences, so the relationship is a guide, not an exact prediction.
Worked Example
An investor is considering three ways to gain exposure to copper.
Option A: Buy physical copper bars and pay for storage and insurance.
Option B: Buy a futures-based commodity fund that rolls contracts monthly. The futures curve is in contango.
Option C: Buy shares of a mid-sized copper mining company.
Copper spot price rises 6% over the year.
Option A's return tracks the spot price change closely, minus storage and insurance costs. The investor earns close to 6%, minus a small cost drag.
Option B's return is reduced by the roll effect. Because the curve is in contango, each contract roll replaces an expiring contract with a costlier one. The fund's return might land near 3% to 4%, even though spot rose 6%.
Option C's return depends on copper prices plus the company's production costs, debt levels, and broader equity market moves. If the mining company also benefits from cost cuts, its shares could rise more than 6%. If the company faces high debt or an equity market selloff, shares could underperform copper itself.
All three options share the same underlying commodity theme, but storage costs, roll effects, and company-specific factors create three different outcomes.
Common Exam Traps
Assuming commodities pay interest or dividends directly
Commodities generate no contractual cash flow. Only producer equity or certain fund structures might distribute income, and that income comes from the company or structure, not the commodity itself.
Using spot-price change as the full return on a futures strategy
Roll effects from contango or backwardation can add or subtract meaningfully from the return implied by the spot price alone.
Treating producer equity as pure commodity exposure
Producer shares carry company risk, capital structure risk, and equity-market risk in addition to commodity price movement.
Confusing convenience yield with investor cash income
Convenience yield reflects the benefit of holding the physical good for operational use. It is not a payment to a financial investor.
Assuming all commodities hedge inflation equally
Energy and some metals show stronger inflation sensitivity than agriculture or livestock in many periods.
Practice Question
An analyst observes that spot prices for a commodity rose 4% over the past year. A futures-based fund tracking the same commodity rolled contracts monthly during a period when the futures curve stayed in contango. The fund returned 1% over the same period.
Which explanation best accounts for the difference between the spot price change and the fund's return?
The fund earned a positive convenience yield paid directly to investors.
The fund experienced a negative roll effect from repeatedly replacing contracts at higher prices.
The commodity paid a dividend that was lower than the spot price increase.
Correct Answer: B
In a contango market, futures prices rise with maturity. A fund that rolls contracts monthly sells the expiring contract and buys a new, higher-priced contract. This repeated cost reduces the fund's return relative to the spot price change, which explains the gap between 4% and 1%.
Option A. Convenience yield benefits a party holding the physical commodity for operational use. It is not cash paid to a financial investor in a futures fund.
Option C. Commodities do not pay dividends. This choice incorrectly assigns an equity-like cash flow to a raw material.
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FAQs About Commodities
What are commodities in investing?
Commodities are physical raw materials such as oil, gold, wheat, or cattle that trade in global markets. In investing, commodities fall into four main categories: energy, metals, agriculture, and livestock. Investors gain exposure for price appreciation potential, inflation sensitivity, and diversification, not for contractual income.
How can investors gain commodity exposure?
Investors can buy the physical commodity, trade futures or other derivatives, buy shares of companies that produce commodities, or invest in pooled funds. Each form carries different liquidity, cost, and risk characteristics, even when the underlying commodity theme is the same.
Why can commodity futures returns differ from spot returns?
Futures prices reflect financing cost, storage cost, and convenience yield relative to the spot price. When investors roll futures contracts in a market with contango, they can face a negative roll effect. This causes the futures-based return to differ from the simple spot price change.