CAC 40

CAC 40
Name	CAC 40
Type	Stock market index
Country	France
Operator	Euronext
Inception	1987-12-31
Components	40 large-cap companies
Capitalization	Market-cap weighted
Related	Euronext Paris, SBF 120, FTSE 100, DAX

CAC 40 is the principal French stock market index representing forty of the largest and most liquid companies listed on Euronext Paris. It serves as a benchmark for French equity performance and is widely used by institutional investors, index funds, and financial media. The index is market-capitalization weighted and reflects the performance of major French firms across sectors such as banking, luxury goods, energy, pharmaceuticals, telecommunications, and industrials.

History

The index was launched on 31 December 1987 by the Paris Bourse, succeeding other benchmarks like the SBF 120 and aligning with developments in European financial markets such as the formation of Euronext and the consolidation with NYSE Euronext. Its creation followed major events including the Black Monday (1987) market collapse and the ongoing liberalization of European capital markets under frameworks influenced by the Single European Act and the lead-up to the Maastricht Treaty. Over time the index's governance and calculation methodologies were influenced by standards adopted by international counterparts including the FTSE 100 and the DAX (index), and it has been adjusted during episodes like the Dot-com bubble burst, the 2008 financial crisis, and the Eurozone crisis.

Composition and Calculation

Constituents are selected from companies listed on Euronext Paris based on free-float market capitalization and liquidity, with periodic reviews by the index committee. The weighting scheme is by free-float market capitalization with caps to limit single-constituent concentration, following practices similar to indices such as the MSCI World Index and the S&P 500. Corporate actions—mergers, acquisitions, spin-offs—are handled with protocols comparable to those used by FTSE Russell and S&P Dow Jones Indices. Calculation uses real-time pricing from exchange trades like those of Bourse de Paris and settlement conventions consistent with European clearing systems such as Euroclear.

Constituent Companies

The index comprises forty large-cap firms spanning sectors represented by notable issuers such as multinational banks and insurers like Société Générale and BNP Paribas (bank), luxury and consumer brands akin to LVMH and Kering (company), energy and utilities comparable to TotalEnergies and Engie, aerospace and defense names similar to Safran and Dassault Aviation (company), and pharmaceutical and healthcare firms in the mould of Sanofi. Other major categories include telecoms with parallels to Orange S.A., automotive groups reminiscent of Renault and Stellantis, chemicals and materials firms like Arkema, and technology-related firms comparable to Atos (company). Constituents are often multinational, listed in Paris but operating across regions including European Union, United States, Asia, and Africa.

Market Performance and Index Levels

Index levels have reflected macroeconomic cycles, geopolitical events, and sector rotation observable during episodes such as the 2000s commodities boom, the 2008 financial crisis, the European sovereign debt crisis, and the COVID-19 pandemic in France. Performance metrics commonly compared include total return versus price return, dividend yields, and volatility measures akin to those used for the VIX on the Chicago Board Options Exchange. Benchmarking often contrasts the index with peers like the FTSE 100, the DAX (index), and the S&P 500, and with regional aggregates such as the MSCI Europe Index.

Trading and Regulation

Trading of the index constituents occurs on Euronext Paris with derivatives traded on platforms offering futures and options, similar to instruments listed on the Euronext Derivatives and the CME Group for international hedging. Market structure includes order types and execution venues comparable to CAC 40 futures exchanges and European multilateral trading facilities regulated alongside entities like the Autorité des marchés financiers (France), European Securities and Markets Authority, and national regulators in France. Clearing and settlement rely on institutions like Euroclear France and cross-border arrangements with pan-European central counterparties such as LCH (clearing house).

Criticisms and Limitations

Critics highlight concentration risk, sector bias, and the limitations of market-cap weighting—issues also discussed in relation to the S&P 500 and FTSE 100. Concerns include underrepresentation of small and mid-cap innovation drivers comparable to firms listed on the Alternext or the Euronext Growth market, potential corporate governance conflicts among large family-controlled groups similar to critiques faced by LVMH or Hermès (company), and sensitivity to commodity cycles affecting companies analogous to TotalEnergies. Debate continues about alternative weighting methods promoted by proponents of indices like the MSCI ESG Leaders series and factor-based strategies such as those advocated in academic research by scholars at institutions like London Business School and INSEAD.

Category:Stock market indices