A company's size, measured by its market capitalization, says a lot about its risk profile, but it guarantees neither its soundness nor its future performance. Here's what you really need to understand before relying on this criterion alone.
Market capitalization, meaning the total value of a company's shares multiplied by the number of shares outstanding, serves as a benchmark for classifying listed companies by size. This gives us large caps, often seen as more stable investments, and small caps, which can offer higher growth potential in exchange for more pronounced volatility.
These two categories play different roles in building a portfolio. Understanding what sets them apart helps an investor better spot the opportunities available, while keeping a clear view of the risks tied to each. If you'd rather have a professional handle this allocation for you, tailored to your profile and goals, our Signature program was designed for exactly that.
Big Caps
A large cap refers to a listed company whose market value exceeds 10 billion francs. In Switzerland, groups like Nestlé, Roche, or Novartis fall into this category.
These companies are also known as "blue chips": they typically stand out for consistent financial results, a solid reputation, and a robust financial position. They're often the names at the top of the SMI, the flagship index of the Swiss stock exchange.
But being a large cap doesn't shield a company from every risk. The Wirecard case is a reminder of that: this German online payments group, once seen as a jewel of European fintech, collapsed in 2020 following a major accounting scandal, ultimately filing for bankruptcy. Its former CEO later faced legal proceedings.
The lesson is simple: a company's size never guarantees the quality of an investment. Doing your own research remains essential, including looking at smaller companies, which can absolutely form a solid base within a diversified portfolio.
Small caps
As the name suggests, small caps have a much more modest market value, generally between 250 million and 2 billion francs. They're found across every sector and every stage of development, including within the SPI, the broad index of the Swiss stock exchange, alongside companies like Bossard or Comet Holding.
Contrary to popular belief, small caps aren't systematically young start-ups. Many are, in fact, well-established companies with a solid track record and a healthy financial position. It's precisely their smaller size that, in theory, leaves them more room to grow.
In exchange, these stocks tend to be more volatile, and therefore riskier, than those of larger companies. A lower trading volume is often enough to move their price significantly, sometimes even within a single trading day.
How are stocks classified by market capitalization?
There are several categories, defined mainly by a company's market value (thresholds shown here in Swiss francs, for reference):
● Mega cap: 200 billion francs and above
● Large cap: 10 to 200 billion francs
● Mid cap: 2 to 10 billion francs
● Small cap: 250 million to 2 billion francs
● Micro cap: 50 to 250 million francs
● Nano cap: under 50 million francs
These categories developed gradually, alongside the evolution of stock market indices. They remain relative rather than fixed: depending on the context, some consider a company a mega cap only above 100 billion francs, for instance.
What are the characteristics of large caps?
Beyond their size, large caps are generally long-established, well-known companies. Thanks to stable revenue sources and proven profitability, they're more likely to pay regular dividends to their shareholders. They're often market leaders, with brands widely recognized by the general public.
What are the risks associated with small caps?
Small caps can offer attractive growth prospects, but they also come with specific risks worth knowing about.
Their volatility, first of all, tends to be higher: price swings, both up and down, can be more pronounced than for larger stocks. These shares are also often less liquid and less frequently traded, with wider gaps between buying and selling prices, which can make entering or exiting a position more costly. This is the kind of detail that's better understood before investing than after an unpleasant surprise.
Frequently Asked Questions
Is a small cap necessarily a young company?
No. Many small caps are well-established companies that have been around for years, sometimes decades. Their modest size mainly reflects their sector or growth strategy, not necessarily how long they've existed.
Should beginners avoid small caps?
Not necessarily, but their higher volatility means being comfortable with more pronounced price swings. Many beginning investors prefer to first get familiar with more stable stocks before allocating part of their portfolio to small caps.
Are large caps immune to crises?
No. Their size and apparent solidity don't protect them from collapse, as the Wirecard example illustrates. A large cap remains a full-fledged investment in its own right, and deserves to be analyzed as such.
Can small and large caps be combined in the same portfolio?
Yes, and it's actually a common practice. Combining the two often allows investors to benefit from the relative stability of large companies while keeping exposure to the growth potential of smaller ones.
How can you tell which category a stock falls into?
Simply multiply the stock's current price by the total number of shares outstanding. This figure, the market capitalization, is generally available directly on major financial platforms, or on the SIX Swiss Exchange website for Swiss stocks.
At its core, there's one thing to remember: a company's size tells you about its risk profile, not its quality. A well-built portfolio often blends both profiles rather than relying solely on the most reassuring names. Not sure about your own risk profile? Take our Financial Diagnostic to get a clearer picture!
The information presented in this article is provided for informational and educational purposes only. It does not constitute personalized advice, investment advice, or an offer or solicitation to buy or sell financial products.
Any investment decision should be made after a thorough analysis of your personal situation, your objectives, and your risk profile, and may require the advice of a licensed financial advisor.
Past performance is no guarantee of future results. Investments carry risk, including the risk of capital loss.