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Stocks tread water as investors watch oil, wait for economic data

Stocks are on track to open flat as the Nasdaq looks set to end the week in the green. Today is expected to be one of the busiest trading days of the year, as traders adjust their portfolios in response to the rebalancing of the Russell indices. Wall Street is also bracing for a round of economic data: the latest readings on the manufacturing sector and housing. Alexis Christoforous, Jared Blikre and Rick Newman discuss the day’s top business stories.