Sorry, something has gone wrong. Best Answer: The Enhanced Fujita Scale, or EF Scale, is the scale for rating the strength of tornadoes in the United States estimated via the damage they cause.
DEFINITION of 'Basis Trading'. An arbitrage trading strategy that aims to profit from perceived mispricing of similar securities.
What is 'Basis'. The term basis has many meanings in finance. One definition is that basis is the variation between the spot price of a deliverable commodity and the relative price of the futures contract for the same actual that has the shortest duration until maturity. Another form of basis refers to the cost of a purchased security used to calculate taxes owed.