On September 11, 1986, the Dow dropped 4.6%, the steepest one-day decline since May 28, 1962. This was followed the next day by a further 1.9% decline, and then, over succeeding months, by a series of sharp one-day drops that were precursors to the 22.6% collapse on October 19, 1987 – the largest-ever one-day correction.