What it means
Many business risks last far longer than the financial contracts available to cover them. An airline may burn fuel for years, but the most actively traded fuel futures (standardised contracts to buy or sell at a fixed price on a future date) run out within months.
A rolling hedge bridges that gap by closing the old contract and opening a fresh one just before expiry. The strategy matters because it lets a finance team protect margins without locking in one price for a very long time.
If the business tied itself to a single five-year contract, it would carry a large commitment and could be stuck with a poor price if conditions changed. Rolling keeps the position flexible, because every roll is a chance to review the size and the price of the cover.
In practice the treasury team agrees a hedge ratio, which is the share of the exposure it wants protected, and a rolling schedule. For example, it may hedge 80% of the next three months of fuel use, then roll monthly to keep the cover in place.
Each roll creates a small gain or loss that finance needs to record and explain. The cost of rolling depends on the shape of the futures curve, which is the pattern of prices for contracts of different expiry dates.
When later contracts cost more than nearer ones (a market condition called contango), a buyer pays a premium every time it rolls forward. When later contracts are cheaper (backwardation), rolling can produce a gain instead.
There is also a risk that the hedge no longer matches the exposure. If volumes fall, the business can end up over-hedged, and the contracts then act as a speculative position rather than as protection.
Rolling hedges also create cash needs, because daily margin payments on futures must be funded even when the underlying business is performing as planned. Accounting is the final nuance finance teams must manage.
To use hedge accounting, which matches the gain or loss on the hedge to the item being protected, the company must document the strategy and test that the hedge is effective. A rolling hedge requires that documentation to be kept up to date at every roll.
In practice
Real-world examples.
Example
A budget airline expects to buy fuel every month for the next two years. Its treasury team buys three-month fuel futures covering 70% of expected use and rolls them each quarter. Because finance builds the expected roll cost into the budget, fare pricing is not disrupted by a spike in fuel.
Example
A UK-based furniture exporter invoices customers in dollars and wants to protect its pound income over several years. It uses one-month currency forwards and renews them as each one settles. The rolling arrangement keeps the rate it can lock in close to the market, but the team has to watch the interest rate gap between the two currencies, which feeds into each roll.
Example
A food manufacturer uses wheat as its main raw material and cannot fix a supplier price for more than a season. It rolls wheat futures forward every few months so that a bad harvest does not cut its gross margin. When the market flips into backwardation, the rolls produce small gains that partly offset the higher cost of physical wheat.
Formula
Calculation
Cost of one roll = (price of new contract - closing price of expiring contract) x quantity
Suppose a freight company hedges 100,000 barrels of fuel by holding futures that are replaced every quarter. The expiring contract is closed at $80.00 per barrel, and the replacement contract for the next quarter is bought at $81.50 per barrel. The difference is 81.50 - 80.00 = $1.50 per barrel. Cost of the roll = 1.50 x 100,000 = $150,000. If the market stays in the same shape over four quarters, the annual roll cost would be about 150,000 x 4 = $600,000, which should be built into the budgeted price of fuel.Case study
Seen in the real world.
Harbourline Logistics is an illustrative, fictional shipping company that burns about 400,000 barrels of fuel each year. Its finance director was worried about a sudden price spike and agreed a policy of hedging 75% of expected use, using three-month futures that are rolled every quarter.
In the first year the market was in contango, and the company paid roughly $0.80 per barrel on each roll. On the 300,000 barrels covered across the year, that came to an extra 0.80 x 300,000 = $240,000, which the team had flagged to the board in advance as the price of certainty.
In the second year fuel prices jumped sharply and the hedge gains more than covered the roll costs, protecting the company's margins during a tight season. The illustrative lesson is that a rolling hedge is a cost of insurance, and its value is judged by the risk it removed rather than by whether the hedge made money.
Watch out
Common mistakes.
- Treating a rolling hedge as a way to make a profit, when its job is to reduce risk and every roll has a cost or gain that moves with the futures curve.
- Forgetting that daily margin calls on futures need cash, so a hedge that works perfectly on paper can still cause a liquidity squeeze.
- Rolling at the same size for years without checking whether the underlying exposure has changed, which can leave the business over-hedged.
Questions
People also ask.
How often should a hedge be rolled?
It depends on the contract and the policy, but most teams roll a short time before expiry to avoid thin trading, and many review the size of the hedge at each roll.
What is the difference between a rolling hedge and a stack hedge?
A rolling hedge uses short-dated contracts replaced over time, while a stack hedge buys many contracts of one expiry up front, so the first is more flexible and the second usually has less roll risk.
Can a rolling hedge lose money even if it works?
Yes, because the hedge can lose value when prices move in your favour, and that loss is offset by cheaper physical costs elsewhere in the business.
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