When traders talk about European shares, Germany’s DAX usually gets the attention. France’s CAC 40 deserves just as much. It is home to some of the world’s biggest luxury brands, energy companies and industrial groups, and it has a habit of reacting sharply to French politics and public finances. Here is what it is and what drives it.
What the CAC 40 is
The CAC 40 is the main benchmark index of the Paris stock exchange, run by Euronext. It tracks 40 of the largest and most actively traded French companies, weighted by their free-float market value, with caps so no single company can dominate completely. The name comes from Cotation Assistée en Continu, the exchange’s original continuous trading system. The index was launched in 1987.
What it contains
The CAC 40 has a distinctive mix. Luxury and consumer goods companies carry heavy weight, giving the index significant exposure to wealthy shoppers in China, the US and the Middle East. Energy, aerospace and defence, banks, pharmaceuticals, industrial engineering and utilities make up much of the rest.
Many of these companies earn most of their revenue outside France. That means the CAC 40 is in many ways a bet on global demand rather than on the French economy alone.
What moves it
Global consumer demand, especially from China, matters a great deal because of the luxury weighting. Signs of weaker spending in Asia can hit the index hard, while recovery can lift it quickly. The euro also matters: a weaker euro helps exporters by making their goods cheaper abroad and boosting the value of overseas earnings.
Interest rates set by the European Central Bank influence the banks and the valuations of growth companies. Energy prices affect the oil majors and the wider cost base of industry.
French politics is the factor that most often surprises outsiders. Elections, government collapses and budget disputes can drive up French government bond yields, which in turn weigh on banks and on confidence more generally. Traders watch the gap between French and German ten-year bond yields, known as the spread, as a gauge of political risk. Our guide to how bond yields affect stocks explains why that link matters.
How it compares with other indices
Against the DAX, the CAC 40 has more luxury and less heavy industry and car manufacturing. Against the FTSE 100, it has more consumer and industrial exposure and fewer mining companies. Like the DAX, the CAC 40 is often quoted as a price index, while dividend-inclusive versions exist for those tracking total returns.
How UK traders follow it
Paris trading hours run from 08:00 to 16:30 UK time, so the CAC 40 trades alongside London for almost the whole session. Brokers offer it through CFDs, spread bets and futures, and exchange-traded funds give longer-term exposure. Because many French companies are global, CAC 40 moves often line up with broader European sentiment, but French political headlines can make it diverge sharply.
Common mistakes
The first mistake is assuming the index tracks the French economy closely. It does not, because of its global earners. The second is ignoring the bond market. French yields can move the index on days when there is no company news. The third is forgetting about concentration. A few luxury names can drive much of the index’s move on any given day.
The beginner takeaway
The CAC 40 is a global consumer and industrial index with a French political twist. Watch Chinese demand, the euro and French bond yields, and its moves become easier to understand. If you want to see how you combine signals like these in your own trading, take the free Samuel & Co Trading Trader Assessment.
