Markets are trading on a positive note wherein Nifty is hovering at 9990 level and BSE Sensex gained 52 points. BSE Metal is the top gaining index in the morning session on Wednesday. It is up by 1.74% at 12,504. Vedanta is contributing majorly to the index gains and pushing it to higher levels. Vedanta is trading up 2.22% at Rs 280.50 per share on BSE. Other stocks in the index viz. Jindal Steel & Power is up 4.7% at Rs 146.50 per share, JSW Steel is up 2.6% at Rs 220.75 per share, National Aluminium is up 2.2% at Rs 72.25 per share, NMDC is up 2.2% at Rs 123.85 per share and Tata Steel is up 1.7% at Rs 563.00 per share.