The CAC 40 is a benchmark French stock market index. The index represents a capitalization-weighted measure of the 40 most significant values among the 100 highest market caps on the Paris Bourse (now Euronext Paris). It is one of the main national indices of the pan-European stock exchange group Euronext
Its base value of 1,000 was set on 31 December 1987, In common with many major world stock markets; its all-time high to date (6922.33 points) was reached at the peak of the dot-com bubble in September 2000.
Although the CAC 40 is almost exclusively composed of French-domiciled companies, about 45% of its listed shares are owned by foreign investors, more than any other main European index
German, Japanese, American and British investors are amongst the most significant holders of CAC 40 shares.
The CAC 40 has companies listed such as AXA, MICHELIN, L'OREAL and RENAULT