NASDAQ compositesm index

A statistical measure that indicates changes in The Nasdaq Stock Market. The Nasdaq Composite Index measures all Nasdaq domestic and foreign common stocks. It is market-value weighted: each company's security affects the index in proportion to its market value. Securities in the Nasdaq Composite Index generally are assigned to subindexes based on their Standard Industrial Classification (SIC) codes. (Refer to market value, subindex, Standard Industrial Classification codes)