On April 1 1990 trading was moved to a new digital system: HETI (Helsinki Stock Exchange Automated Trading and Information System), which replaced the electro-mechanical trading board originally introduced back in 1935. HETI enabled remote traders to do transactions in equal circumstances as those in the trading room.
The cooperative changed to an LLC (Helsingin Arvopaperipörssi LLC) in the fall of 1995 and merged with several clearing and stock deposit companies and associations in the beginning of 1997. During 1997 and 1998 the Stock Exchange bought both of the Finnish derivative exchanges and merged them with itself to become HEX Llc. In November 1998 HEX LLC merged with Arvopaperikeskus to form Helsinki Exchanges Group Plc, which then changed its name to HEX Plc in the spring of 2001. In 2001 HEX acquired the majority of shares of the company operating theEstonian Stock Exhange (TSE). In the summer of 2002 HEX purchased nearly 100% of the Stock Exchange of Riga, Latvia.
See also: List of Finnish companies