 The bank was based in Oslo and listed on the Oslo Stock Exchange.During the 1960s and ’70s, the bank bought and merged with a number of regional and local banks in Norway, including Odda By- og Bygdebank (1964), Porsgrunds Ørebank (1964), Røkens Bank 1964, Oplandske Kreditbank (1966), Horten og Omegns Privatbank (1970), Privatbanken i Sandefjord (1970), Østfold Privatbank (1970), Finnmarkens Privatbank (1973), Haugesunds Forretningsbank (1973) and Opplandsbanken (1980).During the 1980s, DnC had expanded significantly both in Norway and internationally, and was Norway's largest bank at the time.