Rollover
Closing a near-expiry futures position and simultaneously reopening it in the next contract month to maintain exposure without taking delivery.
Rollover is the process of exiting the expiring (front-month) contract and re-entering an equivalent position in the next active contract month. It preserves directional exposure across expiry without incurring physical settlement or cash settlement at a potentially unfavorable price.
Rollovers can be executed as a calendar spread — selling the front month and buying the back month in a single order — which avoids leg-in risk and typically gets a tighter fill than two separate market orders.
The roll date is when most open interest migrates to the new lead contract, usually 7–10 days before expiry for equity index futures. Liquidity thins in the expiring month after the roll date, so most active traders move before then.
On the desk
It is mid-September. A trader holds long 2 ESU24 (September contract) but does not want delivery. They sell 2 ESU24 / buy 2 ESZ24 (December) as a calendar spread, paying a small roll cost. Their long ES exposure continues uninterrupted.