sentences:  The company is listed on MICEX-RTS.In early 2019, the key shareholders were Vladimir Potanin's Olderfrey Holdings Ltd (34.57%), Oleg Deripaska's Rusal (27.82%) and 
  Roman Abramovich's Crispian Investments Ltd.In December 2010, Norilsk made a share buyback offer for Rusal's 25% share in the company for US$12 billion, but the offer was declined.