What it means
An option is a contract that gives its holder the right, but not the obligation, to buy or sell an asset at a set price before a set date. Because options expire, anyone who wants to keep an exposure for longer has to replace the contract.
Rolling is the name for doing that in a single, planned step. A roll is really two trades done together.
The investor closes the old option by selling it back (or buying it back, if they wrote it), then opens a new option with different terms. The net result is either a cash credit or a cash debit, depending on the prices of the two contracts.
There are three common directions. Rolling out moves to a later expiry, rolling up moves to a higher strike, and rolling down moves to a lower strike.
A company protecting its shares with put options (the right to sell at a set price) would normally roll out to keep the protection running, while a covered-call writer (someone who sells call options on shares they already own) may roll up and out to avoid having shares taken away at a low price. The business reasons are practical.
A treasury team may want to extend a currency option that protects a long-term contract, or an investor may want to avoid being forced to sell a position that has risen in value. Rolling can also be used to take profit, reset a strike closer to the current price, or limit a loss on a position that has moved the wrong way.
Rolling is not free. Each roll carries trading costs and, when a position is rolled to a later date, the investor pays for the extra time through a higher premium (the price of the option).
Rolling also does not undo a loss: if the position is down, rolling simply extends the exposure and may increase the total amount at risk. Tax and accounting can be a further nuance, because closing the old option may trigger a realised gain or loss.
The finance team should confirm how the local rules treat the close and the new contract.
In practice
Real-world examples.
Example
A software company owns put options that protect a block of shares it holds as a long-term investment. The options are about to expire in two weeks, so the treasurer sells them and buys new puts that last another six months. The extra $12,000 net cost is booked as the price of extending the protection.
Example
An investor writes call options on shares she owns to earn premium income. The share price rises above the strike price, and she does not want her shares called away. She buys back the call and writes a new one at a higher strike and a later expiry, collecting a small net credit.
Example
An importer holds a currency option that caps the dollar cost of a payment due next quarter. The payment date is moved back by two months, so the finance team rolls the option to match the new date. The roll costs a modest additional premium, which is recorded as a hedging cost.
Formula
Calculation
Net roll = premium received from closing the old option - premium paid for the new option
Suppose an investor holds 10 call option contracts, with each contract covering 100 shares, so the position covers 1,000 shares. The old option is sold back for $4.20 per share, which brings in 4.20 x 1,000 = $4,200. The new option, with a later expiry, costs $5.10 per share, which is 5.10 x 1,000 = $5,100. Net roll = 4,200 - 5,100 = -$900, so the investor pays a net debit of $900 to extend the position.Case study
Seen in the real world.
Brightwater Foods is an illustrative, fictional company that buys sugar every month and uses call options to cap its price. In March it held options on 500,000 pounds of sugar that were due to expire at the end of the month, but its purchasing plan ran through to September.
The finance manager sold the expiring options for $0.0220 per pound and bought new options expiring in September at $0.0310 per pound. The net debit was 0.0090 x 500,000 = $4,500, which the manager recorded as the cost of extending the protection.
The board asked whether the company should simply wait and buy new options later. The illustrative answer was that the roll locked in the price cap before a seasonal rise in sugar, and the $4,500 cost was small compared with the margin it protected.
Watch out
Common mistakes.
- Assuming a roll resets a losing trade, when it only extends the exposure and often adds more cost.
- Ignoring trading costs and bid-offer spreads, which can erode the benefit of rolling small positions.
- Rolling too late, close to expiry, when the option has little time value left and the market for it is thin.
Questions
People also ask.
When should an option be rolled?
There is no single date, but many investors roll a few weeks before expiry because time value falls quickly in the final days and trading remains active.
Is rolling the same as exercising an option?
No, exercising uses the right to buy or sell the underlying asset, while rolling just replaces one option contract with another.
Can a roll produce a credit?
Yes, if the new option is worth less than the one being closed, which often happens when rolling a written option to a lower-priced strike.
From the founder's library
Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related