After finishing slightly higher by 0.26% to 3093 points last Friday, a new historical record in closing, the S&P500 index is expected to fall off the field today as a result of taking babies. 
Cautiousness is reinforced by the sharp decline in Asian markets, with renewed tension in Hong Kong and trade-related uncertainties.
D. Trump had indicated at the end of the week that he had not given his agreement to raise the tariffs imposed on China, as required by Pékin before signing an agreement.

In hourly data, the dynamics remain bullish above 3066 points. Only the lowering of this level would militate for the beginning of a consolidation towards 3050/3030 points at first.