Every futures contract has an end date. When that date arrives, the contract settles in cash or by delivery, and it stops trading. Most traders never let it get that far. Instead, they close positions or roll them into a later contract month. Here's what expiration means and how rolling works.
Expiration basics
CME Group defines expiration as the last day you can trade a contract. For many contracts it falls around the third Friday of the expiration month, but the exact rule varies by product, so check the contract's specifications for its last trading day.
Exchanges list several contract months at the same time. Some markets list every month (crude oil, for example), while many financial contracts, including stock index futures, follow a quarterly cycle of March, June, September, and December. See Reading futures symbols for the month codes.
What happens at expiration
| Settlement type | If you still hold the position |
|---|---|
| Cash-settled (e.g., stock index futures) | Your position is closed at the final settlement price, and the gain or loss is credited or debited in cash. |
| Physically delivered (e.g., many energy, metal, and agricultural contracts) | Sellers deliver and buyers take delivery under exchange rules, with deadlines that can begin before the last trading day. |
Watch the first notice day
For physically delivered contracts, delivery-related dates (such as first notice day) can come before the last trading day. Most retail brokers require you to exit before then and may close your position automatically. Learn your broker's cutoff for every physical market you trade.
What "rolling" means
Rolling means closing a position in the expiring contract and opening the same position in a later contract. CME Group's example: a trader long four September E-mini S&P 500 contracts would sell those four and buy four December (or later) contracts.
The trader's market exposure stays roughly the same; only the expiration date moves forward.
When traders roll
There's no single correct day. CME Group notes that traders often watch volume in both contracts to decide when to switch. In the days before expiration, trading activity migrates from the expiring contract to the next one. Once the next month becomes the more active contract, most traders follow, because:
- Liquidity moves. Tighter bid-ask spreads and deeper markets make it cheaper to trade the active month.
- Expiration risk rises. Prices of an expiring contract can behave unusually in its last days as positions close.
- Delivery deadlines approach for physical contracts.
Our guide to volume and open interest explains how to see that shift on your platform.
The price difference between months
The next contract month usually trades at a different price than the expiring one. That difference reflects the market's view of conditions over time: storage and financing costs for commodities, interest rates and expected dividends for stock indexes, and supply and demand expectations.
Here's a hypothetical illustration. You hold one long September contract and roll to December:
- You sell the September contract at 5,010.00.
- You buy the December contract at 5,045.00.
- Your position is now in December at 5,045.00. The 35-point difference is not a loss; it reflects the different prices of the two months. Your profit or loss from here depends on how December moves.
What does matter is cost: commissions and fees on two trades, plus any slippage. Many platforms let you place a single calendar spread order that sells one month and buys the other at once, which can reduce slippage. We cover spreads further in Spread trading.
Charts and continuous contracts
Because each contract only trades for a limited time, charting services build "continuous" charts that join successive months together. Some simply splice contracts; others adjust past prices to remove the jump at each roll. When you study long-term charts, know which method your chart uses. Gaps at roll dates are often artifacts of the splicing, not real market moves.
A simple rollover checklist
- Mark the last trading day, and any delivery-related dates, on your calendar when you open a position.
- Check your broker's required exit date for physically delivered contracts.
- Watch volume in the current and next month as expiration nears.
- Decide in advance whether you'll roll or close. Don't decide in the final hour.
- Use a spread order if your platform supports it, and confirm the new contract month before submitting.
- Record the roll and its costs in your trading journal.
A complete roll, step by step
Here's a hypothetical example of rolling a long position in Micro E-mini S&P 500 futures from September to December:
- Two weeks before expiration, you note the last trading day and check volume in both months each day.
- When December volume overtakes September, you decide to roll.
- You enter a calendar spread order that sells September and buys December in one transaction, or you place the two orders back to back.
- You confirm the fill: you now hold the same number of December contracts, and no September contracts.
- You update your stop and target orders to the December contract. Orders on the old month don't carry over.
- You log the roll with both prices and costs in your journal.
Step five is the one traders forget. A protective stop that was sitting on the September contract stops protecting you the moment you leave that contract.
Before you trade
Futures are leveraged. A small price move can produce a large gain or loss, and losses can exceed the money in your account. This article is general education, not a recommendation to buy or sell any contract.
- Practice in a simulated (paper) account before using real money.
- Decide your maximum loss per trade before you enter, and size positions to it.
- Confirm current contract specifications and margin requirements with the exchange and your broker.
Common questions
What happens if I forget to roll my position?
For cash-settled contracts, your position is closed at the final settlement price. For physically delivered contracts, your broker will typically require you to exit before the delivery period and may liquidate your position. Don't rely on that safety net.
Does rolling cost money?
Yes. You pay commissions and fees on both the closing and opening trades, and you may give up some value in the bid-ask spread. Some brokers and platforms let you enter a calendar spread order to roll in one transaction.
Why is the next month's price different?
Prices for different months reflect costs and expectations over time, such as storage, interest rates, dividends, and supply outlooks. That difference between months is called the spread, or the calendar spread.
Sources
- Understanding Futures Expiration and Contract Roll — CME Group Education. www.cmegroup.com/education/courses/introduction-to-futures/understanding-futures-expiration-contract-roll.html
- Mark-to-Market — CME Group Education. www.cmegroup.com/education/courses/introduction-to-futures/mark-to-market.html
- Futures Market Basics — U.S. Commodity Futures Trading Commission. www.cftc.gov/LearnAndProtect/AdvisoriesAndArticles/FuturesMarketBasics/index.htm
Last reviewed October 17, 2026. Educational content only; not investment advice. Contract specifications and margins change, so confirm current figures with the exchange and your broker. See our risk disclosure.
