What is a rollover?
In trading, a rollover is the process of keeping a position open beyond its expiry.
Many trades have an expiry date attached to them, at which point the position will automatically close and any profits or losses will be realised. In some circumstances, however, the trade can be rolled over. This means that profits or losses will be realised and the trade gets a new expiry. Often, a rollover will come with an associated charge.