What it means
Borsa Italiana operates the markets located in Milan, in the area often called Piazza Affari. The main equity market is now branded Euronext Milan, and it lists large Italian names across banking, energy, luxury goods, industrials and utilities.
Smaller companies often use a separate growth market designed for them. The headline measure of the market is the FTSE MIB, an index of 40 of the largest and most liquid shares.
An index is a basket of shares used to summarise how the market is doing. Many funds and derivatives are linked to it, and it is the benchmark most often quoted in news reports.
The exchange changed ownership in 2021, when the Euronext group bought Borsa Italiana from the London Stock Exchange Group. This brought Milan into a network of European exchanges, which can make it easier for companies and investors to operate across borders.
Trading continues in euros. Italy's stock market has a distinctive profile.
It has a large weighting in banks, energy and luxury brands, and fewer technology companies than some markets. This means its performance can differ from broader European or global indexes.
For investors outside Italy, the exchange offers exposure to a eurozone economy with a sizeable manufacturing sector and a long tradition of family-owned businesses. Returns depend on share prices and, for investors holding other currencies, on the euro exchange rate.
Businesses may also consider listing there to raise funds and increase their profile. Italy's market also illustrates the role of family and state ownership.
Many large listed companies have a controlling shareholder, which is why the free-float calculation matters so much. Investors judging a company should look at who controls it and how minority holders are treated.
In practice
Real-world examples.
Example
A fashion house in northern Italy lists its shares on the exchange to raise funds for new stores. The listing improves its public profile and gives employees a way to own shares. Its finance team must now publish audited results and follow disclosure rules.
Example
A US pension fund wants exposure to Italian companies and buys an exchange-traded fund that tracks the FTSE MIB. The fund's value moves with Italian share prices and the euro. The fund manager hedges part of the currency risk and reports performance both in euros and in dollars.
Example
A corporate lawyer advising a family-owned manufacturer explains the pros and cons of listing. The company would gain access to capital, but the family would have to share information and possibly give up some control. The family decides to wait until the next generation is ready, but it begins upgrading its reporting so that a future listing would be smoother.
Formula
Calculation
Index weight of a company = Free-float market capitalisation of company / Total free-float market capitalisation of all index members x 100
Free-float market capitalisation counts only the shares available to the public, not those held by controlling owners. Suppose a company has a total market value of EUR 10 billion, of which 60% of the shares are freely traded. Its free-float market value is 10 billion x 0.60 = EUR 6 billion. If the total free-float value of all 40 index companies is EUR 120 billion, the company's weight is 6 / 120 x 100 = 5%. A 10% rise in its share price would therefore lift the index by about 0.5%, other things being equal.Case study
Seen in the real world.
Verdelago Foods is an illustrative, fictional Italian producer of olive oil and pasta with annual revenue of EUR 300 million. It wants to buy a competitor for EUR 90 million, but its bank would lend only EUR 40 million on acceptable terms.
The owners consider a listing on the Milan exchange to raise the balance. They estimate that selling 25% of the company would raise about EUR 60 million, and the costs of the listing, including advisers and ongoing reporting, would be around EUR 3 million in the first year.
In this illustrative case, the owners proceed. The acquisition goes ahead, revenue grows, and the share price rises over the following two years. They reflect that the discipline of public reporting forced them to improve their financial controls, which they now see as a lasting benefit. They also learn that quarterly reporting changes how they talk about results, with more weight on steady performance and less on single large orders.
Watch out
Common mistakes.
- Assuming the FTSE MIB represents all Italian companies, when it covers only 40 of the largest and most liquid.
- Forgetting the euro when judging returns as a foreign investor.
- Believing the exchange is still part of the London group, when it moved to Euronext in 2021.
Questions
People also ask.
Who runs the Milan Stock Exchange?
Borsa Italiana, which is now part of the Euronext group.
What is the FTSE MIB?
It is the main index of the Italian stock market, tracking 40 of the largest and most traded companies.
In what currency do shares trade?
Shares trade in euros, so investors from other countries face currency risk in addition to share price risk.
From the founder's library

Take it further with the book.
Build your financial confidence beyond this definition. Shihan's full-length guide, Accounting Fundamentals, takes the same plain-English approach and turns it into a complete, practical playbook for non-finance managers, business owners and students - with chapter-end quiz answers and presentation slides included.
25% off with code MMHQ25, applied at checkout. Priced in USD - checkout may show the equivalent in your local currency.
View the book and save 25%Related
