Why Wall Street futures are lower following Monday's gains

Stock futures declined early Tuesday morning due to a lack of action in the market since investors are waiting for key economic data in the week.

The Dow Jones Industrial Average decreased by 123 points or 37%. The S&P 500 also decreased by 38% and the Nasdaq 100 decreased by 51%.

The Dow, S&P 500, and the Nasdaq Composite all advanced. The Dow ended the day up by around 16 points or less than 0.1%.

Ed Yardeni, president at Yardeni Research said “Since the beginning of the year we’re seeing an altitude sickness when you look at the valuation multiple.”

In economic data, May’s consumer price index reading is the big one investors are focused on, which is due out Friday.

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