Strong data, health stocks lead Wall St. higher

U.S. equities had been enjoying a rally since the presidential election in November on bets that Donald Trump would introduce tax cuts, deregulation and higher infrastructure spending that would spur economic growth. The near two-month rally has seen the three main Wall Street indexes rack up double-digit percentage gains, but has left some market participants nervous about a potential correction. The S&P 500 index suffered its biggest one-day percentage drop on Wednesday, following weak hou