The Tehran Stock Exchange (TSE) is Iran's largest stock exchange, which first opened in 1967. The TSE is based in Tehran. As of May 2023, 666 companies with a combined market capitalization of US$1.45 trillion were listed on TSE. TSE, which is a founding member of the Federation of Euro-Asian Stock Exchanges, has been one of the world's best performing stock exchanges in the years 2002 through 2013. TSE is an emerging or "frontier" market.

Tehran is the capital and largest city of Iran and also the largest city in Tehran Province. It also serves as the capital of the province, county and the Central District. With a population of around 9 million and 400 thousand in the city and around 16 million and 800 thousand in the larger metropolitan area of Greater Tehran, The Greater Tehran metropolitan area contains towns like the "New Town of Andisheh", "Islam Shahr", "Shahreh Qods", "Shahryar", "Pakdasht", "Firooz Kooh" and "Shamiran". Tehran is the most populous city in Iran and Western Asia, and has the second-largest metropolitan area in the Middle East, after Cairo. It is ranked 24th in the world by metropolitan area population.