Ciner Holding
 Ciner Holding (Park Holding until December 1994) is an industrial conglomerate in Turkey operating in energy media and commerce. Via Ciner Media Group it owns media properties including the Habertürk newspaper and Habertürk TV. In the energy and mining sector it has various coal mines and power plants and via Eti Soda it controls the world's second largest trona (soda ash) reserve. Its Park Elektrik subsidiary is 35% floated on the Istanbul Stock Exchange as PRKME.