Margin requirement (options) Definition: The amount of cash an uncovered option writer is required to deposit and maintain to cover his daily position valuation and reasonably foreseeable intraday price changes. Nearby Terms Margin of profit Margin of safety Margin requirement (options) Margin security Margin stock
A flexible-fuel vehicle (FFV) or dual-fuel vehicle (colloquially called a flex-fuel vehicle) is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel, and both fuels are stored in the same common tank.
Flex Fuel Vehicles. FFVs are specially designed to run on regular unleaded or any ethanol fuel blend up to 85 percent. Special on-board diagnostics âreadâ the fuel blend, enabling drivers to fuel with E10, E15, E20, E30, E40, E50 or any ethanol blend up to E85, or regular unleaded if E85 is not available.