ATLASCAC 40 today: level, companies and odds
The CAC 40 closed at 7,847 (+0.83%) on Oct 26, 2026. It has 40 members and ATLAS covers 35 of them, the largest being LOréal, LVMH Moët Hennessy - Louis Vuitton, and TotalEnergies. Below: each member's price, how far it trades from ATLAS fair value and the model probability of a higher close in a month.
The CAC 40 is the benchmark index of the Paris stock exchange, made up of 40 of the largest companies listed on Euronext Paris.
Data as of Oct 27, 2026.
Index level
CAC 40 closed at 7,847 on October 26, 2026, up 0.83% on the previous session.
ATLAS breadth
32 of 35 members (91%) have a probability above 50% of closing higher in a month in ATLAS's model.
Of 33 members with a fair value estimate, 21 trade at least 8% below it and 5 at least 8% above; the median gap is -31%.
How to read it: ATLAS's calibrated model uses the same long-run drift for every stock, so the share above 50% mostly reflects how many members are calm enough (low volatility) to sit above a coin flip. It gauges how calm the index is, not where it is going.
Best and worst members on the last close
Best
| RMS.PAHermes International | €1,279 | +3.2% |
|---|---|---|
| BNP.PABNP Paribas | €85.55 | +2.4% |
| FGR.PAEiffage | €99.70 | +2.3% |
| ENGI.PAEngie | €23.31 | +2.2% |
| HO.PAThales | €232.90 | +2.1% |
Worst
| EL.PAEssilorLuxottica S. A. | €175.00 | -3.4% |
|---|---|---|
| PUB.PAPublicis Groupe | €99.26 | -1.6% |
| CA.PACarrefour | €13.78 | -0.4% |
| BN.PADanone | €62.00 | -0.4% |
| BVI.PABureau Veritas | €29.10 | -0.4% |
Moves are for the latest stored close of each stock.
All CAC 40 companies
Weights are each member's share of the combined market value of the 35 companies listed here: an estimate, not the official index weighting.
Sector mix
Industrials is the biggest sector with 24% of the combined market value of the members.
How this page is built
Members: the list of companies in the CAC 40 comes from an index-data provider and is refreshed every week. Companies ATLAS does not publish (too small, no data or not listed in the country) are left out, so this page covers 35 of 40.
Price, fair value and probability come from the same stored data as each company page; probabilities use ATLAS's calibrated one-month model. The index level and daily change are for the last close of the index.
Limits: this is not the official index factsheet. Weights are estimated from market value, probabilities are not forecasts, and nothing here is investment advice.
Frequently asked questions
What is the CAC 40?
The CAC 40 is the benchmark index of the Paris stock exchange, made up of 40 of the largest companies listed on Euronext Paris. ATLAS covers 35 of its 40 members.
Which are the biggest companies in the CAC 40?
By market value the largest members are LOréal, LVMH Moët Hennessy - Louis Vuitton, and TotalEnergies. Together the top three make up 28% of the combined market value of the 35 members listed here.
How many companies are in the CAC 40?
The index has 40 members; ATLAS publishes 35 of them.
What does ATLAS breadth mean for the CAC 40?
It is the share of members whose probability of closing higher in a month is above 50% in ATLAS's calibrated model: 91% today (32 of 35). Because the model uses one long-run drift for all stocks, it mostly measures how calm the members are. It is not a forecast for the index.
Which CAC 40 stocks moved the most on the last close?
On the latest stored close, Hermes International rose the most (+3.2%) and EssilorLuxottica S. A. fell the most (-3.4%) among members.
Can I invest in the CAC 40?
An index is a list, not a product, so you cannot buy it directly. Funds that replicate it exist in many markets, but ATLAS does not recommend products. Check costs, taxes and currency before choosing any.
How often is this page updated?
Prices and probabilities are refreshed every day and the page is rebuilt at least every 6 hours. The member list is refreshed every week.
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Other indices
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Information only, not investment advice. ATLAS estimates come from statistical models using public data; they can be wrong, and past results do not guarantee future ones. Disclaimer