| http://www.w3.org/ns/prov#value | - To get a better understanding of an ETF it????????s important to explore what is an index.?? An index is a method used to measure the value of a section of the stock market.?? Think of this as a tool to describe the performance of a sector or the stock market as a whole.?? Listening to a business news channel such as CNBC you will hear phrases such as ???????The Dow is up 4% today??????? or ??????
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