The NSE to levy 15% additional margin on equity derivatives in which top 10 clients account for more than 20% MWPL from March F&O series onwards; withdraws additional margin on Gold, Silver futures.The NSE to levy 15% additional margin on equity derivatives in which top 10 clients account for more than 20% MWPL from March F&O series onwards; withdraws additional margin on Gold, Silver futures. Latest News [ SOBAN NEWS: International and National ]