Equity benchmark indices traded extremely volatile on Thursday but closed in the positive terrain as global oil prices rose after the United States and China signed phase one of the trade agreement. Brent was 45 cents or 0.7 per cent higher at 64.45 dollars a barrel while US crude was up by 39 cents at 58.20 dollars a barrel. Under the deal to call a truce in a trade war between the world's two biggest economies, China committed to buying over 50 billion dollars more of US oil, liquefied natural gas and other energy products over two years. At the closing bell, the BSE SandP Sensex was up by 60 points to 41,933 while the Nifty 50 inched up by 13 points at 12,356. All sectoral indices at the National Stock Exchange were in the green except for Nifty metal which dropped by 1.26 per cent. Meanwhile, Moody's Investors Service said the US-China pact could help boost bilateral exports and lead to an improvement in business confidence as well as investment.