If you take out that RED BLOB...The move down was from 4130 to 3910...Approx 5%.A big move but not as big as 4607/top of the Red BLOB to 3900 Approx 15%
So my calcs are that the Nas dropped 30% from top to recent bottom.
S+P dropped 20% but recovered so as not to register as a bear market on Friday.
Dow dropped 15% for the same period but again rallied into the close.
Conclusion. If you need to be long, do it in the Dow. If you need to be short, do it in the Nas.
If you have no fekkin idea, play both sides of the markets, but take all your longs in the Dow and your shorts in the Nas. Obviously, work out stake sizing relative to each index value, when playing the long/ short option.