Nelonen (Four) is a Finnish commercial TV channel. It started out as Helsinki's local television channel PTV in 1989 on the HTV cable network, which name was changed first to PTV4 and then to Nelonen. It started on June 1, 1997. Nelonen, in Finnish, means the glyph of the number four. The channel is mostly owned by Sanoma Corporation, which owns the Helsingin Sanomat and Ilta-Sanomat newspapers. Its largest owner is Aatos Erkko.