Shares of paint, aviation and oil marketing companies (OMCs) such as Asian Paints, Bharat Petroleum, and Castrol India rallied on Thursday, March 6, as the prices of Brent crude slipped below the $70 per barrel mark. As a result, the Nifty Oil & Gas index, which comprises of 15 oil, gas, and petroleum stocks, surged 2.59 per cent in Thursday’s session, emerging as the top sectoral gainer.