capital markets, both in regard to the legislative framework and the institutions required to set the stage for sound capital movements. In 1981, the "Capital Market Law" was enacted. The next year, the main regulatory body responsible for the supervision and regulation of the Turkish securities market, the Capital Markets Board based in Ankara, was established. A new decree was issued in October 1983 foreseeing the setting up of securities exchanges in the country. In October 1984, the "Regulations for the Establishment and Functions of Securities Exchanges" was published in the Official Gazette. The regulations concerning operational procedures were approved in the parliament and the Istanbul Stock Exchange was formally inaugurated at the end of 1985. The Istanbul Stock Exchange (ISE) was the only corporation in Turkey for securities exchange established to provide trading in equities, bonds and bills, revenue-sharing certificates, private sector bonds, foreign securities and real estate certificates as well as international securities. The ISE was founded as an autonomous, professional organization in early 1986. It is situated in a modern building complex in the quarter of İstinye, on the European side of Istanbul, since May 15, 1995. ISE is home to 320 national companies. Trading hours are 09:30–12:30 for the first session and 14:00–17:30 for the second session, on workdays. All ISE members are incorporated banks and brokerage houses. ISE price indices are computed and published throughout the trading session while the return indices are calculated and published at the close of the session only. The indices are: ISE National-All Shares Index, ISE National-30, ISE National-50, ISE National-100, Sector and sub-sector indices, ISE Second National Market Index, ISE New Economy Market Index and ISE Investment Trusts Index. The ISE National-100 Index contains both the ISE National-50 and ISE National-30 Index and is used as a main indicator of the national market. On April 5, 2013, the Istanbul Stock Exchange merged with the Istanbul Gold Exchange and was reorganized and renamed as Borsa Istanbul. Logo of Borsa Istanbul The current logo of Borsa Istanbul is the traditional flower of Istanbul's imperial gardens, the tulip (also the namesake of the Tulip period in Ottoman history), which was first introduced to the Europeans in Vienna, 1554, as a gift by Ottoman Sultan Suleiman the Magnificent to Charles V, Holy Roman Emperor, of the House of Habsburg. The tulip later even became a valuable investment commodity in Europe, especially in Habsburg