Business Market LIVE: Sensex zooms over 800 pts, tops 49,900, Nifty above 14,750; RIL, HDFC bank top contributors News Desk March 30, 2021 Nazara Tech IPO listing day strategy: Hefty grey market premium; should you buy more or hold after listing? Rakesh Jhunjhunwala-backed Nazara Technologies shares will list on stock markets on March …