Stocks in news: Vodafone Idea, Vedanta, Hindalco Industries, Mastek, Aurobindo Pharma

Market witnessed volatility with marginal gains, while Vedanta, Adani Enterprises, and Dalmia Bharat Cement vie for Jaiprakash Associates. Union Bank's ED faced demotion, and Narayana Health expanded in Bengaluru. Mastek's CFO resigned, JB Chemicals received US FDA approval, and Pricol's CTO also resigned. Aurobindo Pharma's arm secured UK approval, and Hindalco acquired AluChem.