A rolling daily CFD is a contract for difference (CFD) which is automatically extended to the next trading day rather than expiring at the end of a trading day (see: CFD expiry date). Unless the position is closed, a rolling daily CFD remains valid indefinitely.
The practice of holding open positions until the next trading day rather than closing them before an exchange closes for the day is known as overnighting.
When leverage is used in an investment position, interest is charged (buy positions) or paid out (short positions) by the broker for financing which is rolled over from one trading day. This interest is known as the overnight fee.
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