what is a cfd rollover 
when traders hold cfd positions whether long buy or short sell the brokerage has in place predetermined dates that the contracts are closed traders may on these dates close out their positions buying or selling as the case may be and either pocket their earnings or incur their losses depending on the price movement of their cfd in the event that a trader does not specifically close his position the brokerage will automatically rollover the position to the next trading period charging or crediting the trader with the difference between the closing price on the old contract and the opening bid on the new one 