The Czech koruna (CZK) is the official currency of the Czech Republic and is used for transactions within the country. For investors, the CZK can be used as a hedge against currency fluctuations, as it is not highly correlated with the major currencies. As a result, it can be used for diversification purposes. Additionally, the CZK can be used to gain exposure to Czech stocks and bonds. As an emerging market currency, the CZK can offer higher returns than more developed currencies, however, these investments also come with additional risks.