Sensex Opens Marginally Down; Tata Steel Top Loser By: TalkMarkets February 19, 2018 at 04:25 AM EST India share markets opened the day marginally down. The BSE Sensex is trading lower by 37 points while the NSE Nifty is trading lower by 47 points. Read More >> Related Stocks: India 50 Ishares ETF India MSCI Ishares ETF Wisdomtree India Earnings Fund