What Is Rollover in Futures Contracts and Why Traders Do It

The short version: rollover means closing your current futures position, and opening a similar one in the next expiry month. Traders do this to keep their position running past expiry. Here’s how it actually works.

Why futures contracts need rollover at all

Every futures contract has a fixed expiry date. If you want to keep your position past that date, you can’t just leave it open.

Rollover lets you close the expiring contract, and simultaneously open a new one in the next expiry cycle.

How the rollover trade actually happens

You sell your existing position in the expiring contract. At the same time, you buy the equivalent position in the next month’s contract.

Most brokers offer a single rollover order, so you don’t need to execute two separate trades manually.

Why the rollover price isn’t identical

The next month’s contract usually trades at a different price than the expiring one, reflecting the extra time value involved.

This difference is called the rollover cost, or sometimes the rollover premium, depending on which direction the gap runs.

What rollover data can actually tell you

A high rollover percentage suggests traders expect the current trend to continue into the next series.

A low rollover percentage can suggest traders are losing conviction. They may be booking profits before expiry instead of carrying the position forward.

What to watch out for around rollover

Rollover typically happens in the final week before expiry. It can add extra volatility to both the expiring and next-month contracts.

Transaction costs apply to both legs of the rollover trade, so frequent rolling can meaningfully add up over time.

Term	Meaning
Rollover	Closing the expiring contract, opening the next month’s contract
Rollover cost	Price difference between expiring and next-month contracts
Rollover percentage	Share of open interest rolled into the next series

Related reading

• What Is Arbitrage Trading Between Cash and Futures Markets
• What Is Basis Risk in Hedging and Why It Matters

Frequently asked questions

Why do futures traders need to roll over their positions?

Every futures contract has a fixed expiry date. Keeping a position running past that date requires closing it and opening a new one.

How does a rollover trade actually happen?

You sell your existing position in the expiring contract. You buy the equivalent position in the next month’s contract, often in one combined order.

Why does the rollover price differ from the expiring contract’s price?

The next month’s contract usually trades at a different price, reflecting the extra time value between the two expiry dates.

What does a high rollover percentage suggest?

It suggests traders expect the current trend to continue, and are choosing to carry their positions into the next series.

Does rolling over a futures position cost money?

Yes, transaction costs apply to both legs of the trade. The rollover price gap itself can also add a cost.