Why a Hedge Rarely Matches the Asset Exactly

Basis risk affects a hedge by making it imperfect. It is the risk that the price of the hedging instrument, such as a futures contract, does not move exactly in line with the price of the asset being hedged, so gains on the hedge do not fully offset losses on the position.

The gap between the two prices is called the basis, usually measured as the spot (cash) price of the asset minus the futures price. If that gap stays constant, the hedge works perfectly, but if it widens or narrows, the hedger ends up with a better or worse result than planned.

The FRC dictionary entry on basis risk gives the core definition. This guide explains how basis risk works inside a hedge: how the basis is calculated, what makes it strengthen or weaken, where basis risk comes from, worked examples with numbers, the exam traps and five practice questions.

Where This Topic Appears on the Exams

Basis risk is tested in the investment vehicle characteristics and client recommendations sections of the Series 65, usually alongside hedging, futures and options. Questions often ask what risk remains after a hedge is placed, or which type of hedge carries the most basis risk.

FRC’s Series 65 Exam Preparation course covers derivatives, hedging strategies and the risks that remain chapter by chapter, and the Series 65 needs no sponsoring firm. The Series 7 Exam Preparation course covers options strategies in depth, and the SIE Examination Preparation course introduces derivatives and the main types of investment risk.

Every FRC course can be spread across interest-free monthly payments, so cost is no reason to delay. Basis risk questions are short, but they catch out candidates who assume a hedge removes all risk.

What a Hedge Does

Hedging means taking a position that is expected to gain when an existing position loses. A farmer who will sell grain at harvest, for example, can sell grain futures today so that a fall in grain prices is offset by a gain on the futures.

The most common hedging tools are derivatives, contracts whose value depends on an underlying asset. These include futures, forward contracts, options and swaps.

FRC’s guide to hedging vs speculation explains how the same instruments serve both purposes. A hedger aims to reduce risk, while a speculator takes on risk in pursuit of profit.

Hedging Swaps One Risk for Another

A hedge does not remove all risk. It replaces the risk of a large price move in the asset with a smaller, different risk: that the hedge and the asset will not move together exactly.

That smaller risk is basis risk. The hedger gives up most of the exposure to the asset’s price but keeps exposure to the relationship between the two prices.

This is the central exam point. After a hedge is placed, price risk is greatly reduced, but basis risk remains.

How the Basis Is Calculated

The basis is usually calculated as the spot price of the asset minus the price of the futures contract used to hedge it. If corn sells for $5.00 a bushel today and the December corn futures contract is priced at $5.20, the basis is minus 20 cents.

The basis can be positive or negative, and it changes over time as the two prices move. It reflects factors such as storage costs, interest rates, local supply and demand, and the time remaining until the futures contract expires.

As a futures contract approaches expiry, its price tends to move towards the spot price of the asset it is based on. At expiry, for a contract on exactly the same asset at the same location, the basis should be close to zero, a process known as convergence.

Strengthening and Weakening Basis

The basis strengthens when it becomes more positive, or less negative, meaning the spot price rises relative to the futures price. A move from minus 20 cents to minus 10 cents is a strengthening basis.

The basis weakens when it becomes less positive, or more negative, meaning the spot price falls relative to the futures price. A move from minus 20 cents to minus 30 cents is a weakening basis.

These movements decide whether basis risk helps or hurts the hedger. Which way helps depends on whether the hedger holds a short hedge or a long hedge.

Short Hedges and Long Hedges

A short hedge is used by someone who owns the asset, or will own it, and fears a fall in price. They hold a long position in the asset and take a short position in futures, and a strengthening basis improves their result.

A long hedge is used by someone who will need to buy the asset later and fears a rise in price, such as a food manufacturer that buys wheat. They buy futures today, and a weakening basis improves their result.

A simple way to remember it is that the short hedger wants the spot price to do relatively well, because that is what they will sell. The long hedger wants the spot price to do relatively poorly, because that is what they will buy.

Where Basis Risk Comes From

The first source is a timing mismatch. If the hedger needs to close the hedge before the futures contract expires, the basis will not have fully converged, and its value on that date is uncertain.

The second source is a product or quality mismatch. A futures contract may be based on a standard grade of a commodity that differs from the grade the hedger actually holds, so their prices do not move in perfect step.

The third source is a location mismatch. Commodity prices can differ between delivery points, so a hedger in one region using a contract priced at another may face a basis that shifts with local conditions.

Cross-Hedging

A cross-hedge uses a hedging instrument based on a different, but related, asset because no contract exists for the exact asset held. An airline hedging jet fuel with crude oil or heating oil futures is a classic example.

Cross-hedging carries more basis risk than a direct hedge, because the two assets can be affected by different forces. Jet fuel and crude oil usually move together, but a refinery outage or a shift in demand for air travel can drive them apart.

In investment portfolios, cross-hedging is common. A manager may hedge a corporate bond portfolio with Treasury futures, or a portfolio of smaller company stocks with futures on a large company index, accepting the basis risk because no exact match is available.

Basis Risk in Investment Portfolios

When a portfolio manager hedges a stock portfolio with index futures or index options, the hedge protects against broad market moves. It does not protect against the portfolio performing differently from the index.

If the portfolio holds stocks that fall further than the index in a decline, the hedge gains less than the portfolio loses. Adjusting the hedge for the portfolio’s beta improves the match but cannot remove the difference entirely.

This mirrors the split between systematic risk and company-specific risk. An index hedge addresses the market-wide part, while the portfolio’s own mix of holdings creates the basis risk.

Basis Risk in Interest Rates and Currencies

Basis risk also appears in interest rate hedging. A bank that lends at one benchmark rate and funds itself at another faces the risk that the two rates move by different amounts, even though both generally follow the wider rate environment.

The same applies to bonds. Hedging a corporate bond with a Treasury contract protects against general rate moves, but not against a change in the extra yield that investors demand for corporate credit.

In currency hedging, a company may hedge one currency with a closely linked one when a direct contract is costly or unavailable. Any change in the exchange rate between the two currencies becomes basis risk.

Basis Risk With Options

Options hedges are subject to basis risk too. A protective put on the exact stock an investor owns has very little basis risk, because the put is tied to the same security.

An investor who instead buys index puts to protect a portfolio of individual stocks takes on basis risk. If the portfolio falls but the index holds up, the puts may pay little or nothing.

FRC’s guide to call option vs put option explains how each option works. The closer the option’s underlying asset matches the holding, the lower the basis risk.

Worked Example: The Farmer’s Short Hedge

In spring, a farmer expects to harvest 10,000 bushels of corn. The spot price is $5.00, and the December futures price is $5.20, giving a basis of minus 20 cents, so the farmer sells December futures at $5.20.

At harvest, the spot price has fallen to $4.60 and the futures price to $4.75, a basis of minus 15 cents. The farmer sells the corn for $4.60 and buys back the futures at $4.75, gaining 45 cents a bushel on the futures, for an effective price of $5.05.

The effective price equals the original futures price of $5.20 plus the final basis of minus 15 cents. Because the basis strengthened by 5 cents, the farmer did 5 cents better than if the basis had stayed at minus 20 cents, which would have produced $5.00.

Worked Example: The Basis Goes the Wrong Way

Take the same farmer, but at harvest the spot price is $4.60 and the futures price is $4.85, a basis of minus 25 cents. The futures gain is 35 cents a bushel.

The effective price is $4.60 plus 35 cents, or $4.95, which also equals $5.20 plus the final basis of minus 25 cents. The basis weakened by 5 cents, so the short hedger did 5 cents worse than planned.

In both cases, the hedge protected the farmer from most of the 40-cent fall in the spot price. Basis risk explains the remaining difference of a few cents either way.

Worked Example: The Portfolio Cross-Hedge

A manager holds a $10 million portfolio of mid-sized company stocks and hedges it fully with futures on a large company stock index. Over the next month, the index falls 10% and the portfolio falls 14%.

The hedge gains about $1 million, while the portfolio loses about $1.4 million. The net loss of about $400,000 is the result of basis risk, because the portfolio and the index did not move together.

Without the hedge, the loss would have been $1.4 million, so the hedge still did most of its job. A beta-adjusted hedge would likely have closed part of the gap, but could not guarantee a perfect match.

How Hedgers Manage Basis Risk

The most effective step is choosing the closest available match. Hedgers prefer contracts on the same asset, grade and location, with an expiry date close to when the hedge will be lifted.

Where an exact match is not available, hedgers study the historical relationship between the asset and the hedging instrument. They may adjust the size of the hedge, known as the hedge ratio, so the expected movements line up as closely as possible.

Basis risk can be reduced, but it can rarely be eliminated. Only a hedge with the same asset, quantity, location and timing removes it completely.

Basis Risk and the Adviser’s Duty

Advisers who recommend hedging strategies must make sure clients understand what the hedge does and does not cover. Presenting a hedge as removing all risk would be misleading.

Derivatives strategies must also be suitable for the client. A client with limited investment experience or a low risk tolerance may not understand the costs, leverage and residual risks involved. For many such clients, a diversified portfolio built around their goals is the simpler and more suitable choice.

The adviser should document the purpose of any hedge and explain that a gap between the hedge and the holding can remain. Clear disclosure protects both the client and the adviser.

The Exam Traps

The first trap is assuming a hedge eliminates all risk. A hedge greatly reduces price risk but leaves basis risk in place.

The second trap is getting the direction wrong. A strengthening basis helps a short hedger, and a weakening basis helps a long hedger.

The third trap is overlooking cross-hedging. A hedge using a related but different asset carries more basis risk than a hedge on the exact asset held.

The fourth trap is forgetting convergence. As a futures contract approaches expiry, its price moves towards the spot price, and the basis tends towards zero.

FRC’s guide to Series 65 investment vehicles questions and exam traps covers more traps in this area. For the full list, see FRC’s guide to Series 65 exam traps and common mistakes.

A Memory Aid

Remember “a hedge trades price risk for basis risk.” Hedging never leaves the investor with no risk at all.

For the direction, add “short likes strong.” A short hedger benefits when the basis strengthens, and a long hedger benefits when it weakens.

Practice Questions

Question one: what is the basis? The spot price of the asset minus the price of the futures contract used to hedge it.

Question two: what risk remains after a hedge is placed? Basis risk, the risk that the hedge and the asset do not move together exactly.

Question three: which hedger benefits from a strengthening basis? The short hedger, who owns the asset and has sold futures.

Question four: an airline hedges jet fuel with heating oil futures. What is this called? A cross-hedge, which carries higher basis risk.

Question five: what happens to the basis as a futures contract approaches expiry? It tends towards zero as the futures price converges with the spot price.

Get Exam-Ready

Basis risk questions reward candidates who know that hedging changes the risk rather than removing it. Once “a hedge trades price risk for basis risk” is fixed, the rest of the topic is straightforward.

The FRC dictionary is more than a dictionary. It is a library of explainer videos, written explanations and on-page quizzes covering the FINRA and SEC rules you are tested on, so you can open any term, such as long vs short options, and go deeper whenever a question catches you out.

Study With FRC

FRC’s programs and memberships are open to everyone. Whether you are preparing for the Series 65, the Series 7, the SIE or a combination, structured exam preparation turns topics like basis risk into marks you can rely on.

FRC’s Professional Membership adds verified progress and a Digital Profile, so when you apply to advisory firms, hiring managers can see your exam progress and the knowledge you are building, not just read about it on a resume.

Your Next Step

Basis risk is the risk that a hedge and the asset it protects do not move together exactly, leaving a gap between the gain on the hedge and the loss on the position. It comes from mismatches in timing, quality, location or the asset itself, and it can be reduced but rarely eliminated.

Remember “a hedge trades price risk for basis risk,” and you will be ready for every version of this question the exam can ask.