The market can be familiar. The product can be different.
A stock-market index describes a group of stocks. An index futures contract and an index perp can both give price exposure related to that market. Neither gives you ownership of the companies in the index.
This guide compares index products. Futures and perpetuals can reference many other markets too.
A futures contract has a date.
Exchange-traded futures use standardized terms and a specified future date or month. Each contract has its own size and settlement rules. To continue exposure beyond its expiry, traders generally close the expiring position and open a later contract—a process called rolling. CME’s introduction to futures contracts.
Rolling can change your costs and the price level of the contract you hold. A familiar ticker is not enough: check the actual contract month.
A perp removes the scheduled expiry.
An index perp has no scheduled expiry, but it still uses a reference-pricing method and provider-specific terms. Vest, for example, documents internal reference-contract rolls for CME-linked perps. No expiry does not mean that the underlying reference never changes. Vest contract specifications.
Trading hours are a separate question. A contract without an expiry can still have closed or locked periods. Check the chosen market’s schedule rather than assume it trades all weekend. Vest market schedules.
Compare the position, not the number you type.
“One contract” and “one unit” can represent very different exposures. Before comparing two products, ask how much one point of movement changes the position’s value. Margin requirements alone do not answer that question.
For a beginner, a useful comparison starts with four questions:
- Which reference price does the contract follow?
- How large is the exposure I am taking?
- What do entry, exit, and holding cost?
- When and why can the position be closed?
Neither format wins automatically.
An expiry date and a funding mechanism are different design choices, not a complete ranking of safety or cost. Product rules, execution, provider risk, and your ability to understand the position all matter.
Continue with funding, fees, and leverage, or return to the four-product comparison.