is among the biggest media
groups in Finland
. It owns the following:
SanomaWSOY's stock is listed in Helsinki Stock Exchange
. Its biggest owner is Aatos Erkko, whom father and grandfather founded the company first by publishing Helsingin Sanomat and then Ilta-Sanomat. Later, the company bought Helsinki Cable Network (HTV
) and Helsinki's local television channel PTV
, which name was changed first to PTV4 and then to Nelonen, and the distribution was made broader.