Principal stock exchange in Greece, trading stocks and bonds through the fully computerized OASIS system. Screen-based futures and options trading is conducted on indices, stock futures and options, EUR-USD exchange rate future, and the 10-year Hellenic Republic bond through the Athens Derivatives Exchange. The ASE offers more than 20 indices, including the three international indices: FTSE/ASE 20 Index, FTSE/ASE Mid 40 Index, and FTSE/ASE 80 Small Cap Index, FTSE/ASE 140 The exchange introduced the FTSE Med 100 Index in 2003, a joint index involving the ASE, the Tel Aviv Stock Exchange, and the Cyprus Exchange. The ASE trades a general index and a total return general index on the main share market and one on the parallel market as well as a total return parallel market index, in addition to 19 sector indices. The FTSE/ASE indices are reevaluated quarterly. Settlement of equity transactions is T+3. Trading hours are 11 A.M. to 4 P.M., Monday through Friday, with a half-hour pretrading session from 10:30 A.M. To 11 A.M. From 4 P.M. To 4:30 P.M. There is the "at-the-close" trading, where only at the close transactions are realized. www.ase.gr.