The Stockholm Stock Exchange, officially called Nasdaq Stockholm, is the main stock exchange of Sweden. It was founded in 1863 and acquired by futures exchange OM in 1998, which merged with the Helsinki Stock Exchange in 2003 to form OMX. OMX was subsequently acquired by Nasdaq in 2008. It is one of eight stock exchanges that belong to Nasdaq Nordic, which is a subsidiary of Nasdaq that operates stock exchanges in several Nordic and Baltic countries and provides access to 80% of the Nordic and Baltic securities market. The Stockholm Stock Exchange is headquartered in Stockholm, Sweden`s capital and most populous city. It lists 310 companies with a market cap of $1.3 trillion. The exchange also houses bonds and derivatives.

Among the listings are well-known and actively traded companies such as The Volvo Group, Nordea, Ericsson, Hennes & Mauritz and Electrolux. The exchange manages the OMX Stockholm 30 Index, a market weighted price index that tracks the performance of the 30 most actively traded stocks. It is widely seen as the benchmark index for the Swedish stock market. The constituents are screened for eligibility and reviewed semi-annually. The exchange also operates an all share index, several indices that reflect the performance of different sectors and industries as well as a large cap, mid cap and small cap index.