With the exception of Deposit accounts and those who prefer to be classed as pay on request companies normally pay Clients any available realized profits on a weekly basis. Payments will normally be made by cheque or by means of an electronic funds transfer with prior notice. Companies will not normally send any money to any person other than the Client. Refunds by electronic funds transfer will normally only be made to the same card that the funds were deposited from. Many individuals have bank accounts specifically set up for the purposes of spread betting and use this account card only to fund their accounts.
Some companies operate a first in first out basis.
You can, however, hold a long position in the near quarter and a short position in the far quarter of a market or vice versa. Exactly the same as trading indices. You can buy or sell the price of a share. Most companies offer this facility however you should check with them first as to what charge is applicable for such a service. You can choose to roll the positions but you will normally be required to contact the company by telephone in order to do so.