Introduction
The CAC 40 is one of the most closely watched stock market indices in Europe, representing the performance of the 40 largest French companies listed on the stock market. In 2026, it remains a key barometer of the French economy and a preferred entry point for investors wishing to gain exposure to the French market. In this article, we offer a comprehensive analysis of the composition of the CAC 40, the companies that make it up, as well as the different methods to invest effectively this year.
What is the CAC 40?
The CAC 40, acronym for "Continuous Assisted Quotation," is a stock market index created in 1987. It groups the 40 most important stocks on the Euronext Paris market, selected based on their free-float market capitalization and liquidity. It therefore reflects the economic health of large French listed companies and serves as a reference for both national and international investors.
In 2026, the CAC 40 continues to be a dynamic index, regularly incorporating adjustments to reflect the evolution of companies and sectors. Its weight in diversified portfolios is often significant, as it offers exposure to several key sectors: luxury, energy, finance, industry, technology, and more.