The FTSE 100 index itself is calculated daily in real-time from the opening auction at 08.00 am in London until the closing auction at 16.35pm, Monday to Friday, excepting UK Bank Holidays. However, FTSE 100 futures are traded in London over a much longer period, which runs between 01.00 am to 9.00 pm. What’s more many CFD and spread betting providers offer prices in the FTSE 100 24 hours per day, five days a week.