The CAC 40's base value of 1,000 was set on 31 December 1987, equivalent to a market capitalisation of 370,437,433,957.70 French francs. 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. In 1 December 2003, the index's weighting system switched from being dependent on total market capitalisation to free float market cap only, in line with other leading indices.
with t the day of calculation; N the number of constituent shares in the index (usually 40); Qi,t the number of shares of company i on day t; Fi,t the free float factor of share i; fi,t the capping factor of share i (exactly 1 for all companies not subject to the 15% cap); Ci,t the price of share i on day t; Qi,0 the number of shares of company i on the index base date; Ci,0 the price of equity i on the index base date; and Kt the "adjustment coefficient for base capitalization" on day t (reflecting the switch from the French franc to the Euro in 1999).
|Company||ICB Sector||Ticker symbol||Index weighting (%)1|
|Air Liquide||commodity chemicals||2.90|
|AXA||full line insurance||5.14|
|Carrefour||food retailers and wholesalers||2.73|
|France Télécom||fixed line telecommunications||5.07|
|GDF Suez||gas distribution||6.08|
|Groupe Danone||food products||3.03|
|Lafarge||building materials and fixtures||1.45|
|LVMH||clothing and accessories||2.32|
|Pernod Ricard||distillers and vintners||1.39|
|PSA Peugeot Citroën||automobiles||0.70|
|Saint-Gobain||building materials and fixtures||1.53|
|Schneider Electric||electrical components and equipment||1.91|
|Total||integrated oil and gas||13.47|
|Unibail-Rodamco||real estate investment trusts||1.58|
|Vivendi||broadcasting and entertainment||3.61|
- Weightings accurate at close of trade on 22 September 2008.