As per p.8 of Principal and non-principal futures listing Methodology (approved by NCC Management Board 29 May 2014) on 15/04/2015, 19-00 (MSK) Xi parameter for non-principal futures OJSC «Norilsk Nickel» to -6500, OJSC «Severstal» to 0, OJSC «MTS» to -2000, OJSC «Surtutneftegaz» to -2000, OJSC «Surtutneftegaz» to -2000.