The NYSE Composite is a stock market index covering all common stock listed on the New York Stock Exchange, including American depositary receipts, real estate investment trusts, tracking stocks and foreign listings.
Over 2,000 stocks are covered in the index, of which over 1,600 are from United States corporations and over 360 are foreign listings.
however foreign companies are very prevalent among the largest companies in the index of the 100 companies in the index having the largest market capitalization.
According the New York Stock Exchange, its composite index was first established in 1966. It was re-introduced in 2003 using new methodology that is more in line with index methodology applied by popular broad-based US Indexes.
Currently, the NYSE Composite Index is calculated and maintained by Dow Jones Indexes. Previously, the composite index was calculated by the Securities Industry Automation Corp.