U.S. Stock Futures Muted on Tuesday After S&P 500 and Nasdaq Hit New Highs

U.S. stock futures were hovering around the flatline on Tuesday morning after the S&P 500 (SPX) and the Nasdaq Composite touched new highs yesterday, even as the U.S. government shutdown entered its second week. Futures on the Nasdaq 100 (NDX), S&P 5... [1182 chars]