Wall St. rallies as strong earnings reports boost optimism

The spotlight was on the healthcare sector , which rose 1.04 percent, the most in more than one month, after UnitedHealth's upbeat forecast. UnitedHealth rose 6.3 percent and boosted its fellow health insurers. Netflix , which dragged on the market on Monday ahead of its results, was the biggest gainer on the S&P 500 on Tuesday, rising nearly 19 percent after posting much higher-than-expected subscriber growth.