Oslo Børs. The OBX index is tradable, meaning that you can buy and sell listed futures and options on the index. Put another way, you can get the same exposure by purchasing an index product as if you buy all the shares (weighted) included in the index. The rating is based on a six-month trading period. The index is adjusted every third Friday in June and December. OSEBX – The Oslo Børs Benchmark Index (Norwegian: Hovedindeks) is an investable index containing a representative selection of all listed shares on Oslo Børs. The OSEBX is revised on a half year basis and the changes are implemented on December 1 and June 1. OSEFX – The Oslo Børs Mutual Fund Index (Norwegian: Fondsindeks) has the same constituents as OSEBX but applies a weight capping to comply with UCITS. Building The over 190-year-old stock exchange building has been the subject of many long debates about how the building should be managed and designed over the years. Several of Christiania's (the name of Oslo between 1624 and 1925) best known business men fought for years to get approved and funded the construction of a stock exchange in Christiania, the capital of Norway from 1814. In 1823, a building committee was appointed to consider the various suggested drawings at the time. The committee chose the architect Christian H. Grosch's proposal. On July 14, 1826, the Ministry approved the final plans of drawings and budgets. In 1828, it was called Norway's first monumental building, completed on the site called Grønningen, the first public park in Christiania. See also List of companies listed on the Oslo Stock Exchange List of companies delisted from Oslo Stock Exchange List of stock exchanges Oslo Børs Holding References External links Financial services companies of Norway Buildings and structures in Oslo Economy of Oslo Stock exchanges in Norway Companies based in Oslo Financial services companies established in 1819 1819 establishments in Norway Oslo 2019 mergers and acquisitions