Wall Street’s three major indices closed in positive territory after a choppy trade session yesterday, as investors braced for a US government shutdown. The S&P 500 gained 0.4 per cent to end at 6 thousand 688, the tech-heavy Nasdaq Composite Index closed 0.3 per cent up to close at 22 thousand 660. The Dow Jones Industrial Average added almost 0.2 per cent to end at 46 thousand 398.