After seeing some initial weakness, stocks showed a substantial turnaround over the course of the trading day on Wednesday. Investors shrugged off some negative news and turned their focus to better-than-expected reports on pending home sales, manufacturing activity, and construction spending.

The initial downward move came on the heels of the release of a report from ADP showing that non-farm private employment fell by a bigger than expected 742,000 jobs following a revised decrease of 706,000 jobs in February.

Not long after the open, however, the National Association of Realtors said its index of pending home sales rose 2.1 percent to 82.1 in February from a reading of 80.4 in January. The increase by the index came as a surprise to economists, who had expected the reading to come in unchanged.

Lawrence Yun, NAR chief economist, said, Pending home sales have a way to go for there to be a meaningful increase, but recent increases in shopping activity are hopeful indicators that we'll see additional sales gains.

The Commerce Department also released its monthly report on construction spending for February, showing that spending fell 0.9 percent. Analysts had expected spending to fall 1.9 percent following a 3.5 percent decline in the previous month.

Additionally, the ISM Manufacturing index edged up to 36.3 in March from 35.8 in February, although a reading below 50 still indicates a contraction in the sector. Economists had been expecting the index to come in at 36.0.

The major averages continue to perform well in late day trading, ending the session near their best levels of the day. The Dow closed up 152.68 points or 2 percent at 7,761.60, the Nasdaq closed up 23.01 points or 1.5 percent at 1,551.60 and the S&P 500 closed up 13.21 points or 1.7 percent at 811.08.

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