Ace investor Rakesh Jhunjhunwala bought an additional 44 lakh shares of Nagarjuna Construction Company (NCC), a Hyderabad-based construction and infra firm, in the March quarter of the previous fiscal. Rakesh Jhunjhunwala and his wife Rekha Jhunjhunwala together held 13.56 per cent stake or 8.27 crore shares at the end of Q4 in NCC Ltd.