U.S. stocks rallied as investors saw glimmers of optimism in efforts to deliver rapid virus testing. The dollar rose.
The S&P 500 Index climbed for the fourth time in five days even after a weekend full of negative pandemic news as President Donald Trump extended recommendations aimed at inhibiting the spread. The Nasdaq 100 advanced more than 3% with health-care shares among the biggest gainers. Abbott Laboratories surged after unveiling a five-minute coronavirus test and Johnson & Johnson announced a vaccine candidate for the virus.