From since it remained a "free form" financial association until in 1984 it was converted into a cooperative owned mostly by banks, traders[?], other companies and associations.
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 was 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 begining 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 it's name to HEX Plc in the spring of 2001
In 2001 HEX aqcuired 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)
HEX operates both of these exchanges now
In 2003 HEX is merging with the Stockholm Stock Exhange owned by OM.
wikipedia.org dumped 2003-03-17 with terodump