These 10 Stocks Account for All of the S&P 500's First-Half Gains

Big tech stocks are still doing the heavy lifting when it comes to S&P 500 Index returns.

David Kostin, chief U.S. equity strategist at Goldman Sachs, highlighted that more than 100 percent of the S&P 500’s total return of nearly 3 percent in the first half is attributable to just 10 equities. Amazon.com Inc. alone accounts for roughly two-fifths of the benchmark gauge’s advance.