The OM Group
is a Swedish company
in the financial
sector. Started by Olof Stenhammar in the 1980s
to introduce trading in derivatives instruments in Sweden by use of standardized options. It acquired the Stockholm Stock Exchange
and unsuccessfully atempted acquisition of the London Stock Exchange
. The company is also a world leader in financial instruments trading systems.
In 2003 it acquired the Helsinki Stock Exchange.
See also: List of Swedish companies