S&P 500 has an unusually hightendency to rise after a big down day

70918934 : turn around Tuesday

70918934 : looks weak though

Violets : this is how it's been lately. but in 2017, 18 19 and 20 the S&P would continue a downtrend after a large drop. we would see the downtrend last until the next day and then reverse if not two or three days after. it was usually a signal of a bearish environment. things have changed quite a bit now