U.S. stocks plunged Wednesday with the selling accelerating after the S&P 500 broke through a key level technical analysts were watching as support.
With this level gone, watch out below, said these market analysts, who solely study charts to make buying and selling decisions.
"The S&P 500 broke below 1,900 and that triggered a kind of trapdoor effect," Art Cashin, director of floor operations at the NYSE for UBS Financial Services, said on CNBC in reference to the market's drop late Wednesday.
The S&P 500 last traded at 1,900 in early October of last year.
So when will the selling stop? Chart analysts gave us the next levels to watch.