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.
1 Cost basis is generally tracked by tax lot, which is a group of securities purchased on the same day for the same price. Special rules apply to mutual funds using the average cost method of accounting.  Cost basis is important when placing sell trades. Each time you sell securities, we will identify which securities have been sold based on a default tax lot method. Unless you instruct us otherwise at the time of sale, we will use our default tax lot method for the sale of your securities.