The US suffered steep losses overnight with the SP 500 down by 1.9% to 2600 at the close. Not too far away from strong support of 2581, which were the close, on 2 previous days in 2018. First on Feb. 7th, and retested on April 1st. If that fails to hold on what is a near certain further test, then there appears to be no firm support level just below, so it could get really wild as the algo trades go completely ballistic.