Shares are divided into large caps, mid caps and small caps according to their market capitalization, whereby the term “cap” is short for capitalization. Market capitalization is calculated by multiplying the number of shares of the company traded on the stock exchange by the current share price. Large caps, the companies with the highest stock market value, include those with a market capitalization of over two billion euros. Mid caps are companies with a market capitalization of between 500 million and two billion euros, while small caps have a market capitalization of less than half a billion euros. Small caps are the equity category with the highest expected returns.