A surge in consumer confidence helped push the Standard & Poor's 500 past 2,000 Tuesday morning, a day after the index closed just short of that milestone.
The Dow Jones industrial average was on track for its own record high.
At midday Eastern time the S&P 500 was up six points, or 0.3 percent, to 2,004.
The Dow rose 67 points, or 0.4 percent, to 17,143. The Nasdaq rose 14 points, or 0.3 percent, to 4,572.
Amazon rose 3 percent after saying it would buy Twitch, a video streaming company.
Bond prices fell. The yield on the 10-year Treasury note rose to 2.39 percent.
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