Few analysts see its breakout performance stalling out anytime soon since the U.S. “You will get some companies that have failed to meet expectations based on the weakness we’re seeing overseas, so it is going to be a source of disappointment,” said Carmine Grigoli, chief investment strategist at Mizuho Securities in New York. “It’s an important component of (U.S.) earnings going forward.” For instance, third-quarter profit-growth expectations for S&P 500 companies have fallen back to 6.4 percent from about 11 percent two months ago, Thomson Reuters data showed.