XJO Weekend Charting and Chat - 09 Feb 2018, page-53

Yes - you are correct. Corrections usually last weeks.

But - since the GFC - corrections have been different.

Here's a snippet from "The Street"

In terms of the scale and speed of the current drop, things don't actually look all that different than other post-2008 drawdowns:



The latest S&P 500 drawdown is still not quite at the level of the pair of sharp corrections the market saw back in 2015.

RB