Record Month Ends in Pain as Biotech, Small Caps, Apple Tumble

The new Apple Macbook during the company's Spring Forward event in San Francisco on March 9, 2015.

Photographer: David Paul Morris/Bloomberg
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Investments that catapulted U.S. stocks to all-time highs in April turned sour as the month ended, all but erasing gains in the Standard & Poor’s 500 Index.

Health-care stocks, small caps and shares of Apple Inc. and LinkedIn Corp. tumbled as the month wound down, with companies in the biotechnology industry poised for the worst weekly retreat since August 2011. They echoed the fate of popular trades elsewhere, as the dollar and European bonds slid while energy prices rebounded.