Looks like the semis (SMH) broke today, so the FAANG is the only firewall left holding equities afloat. If you are going to play a swing break to retest the lows, might consider NQ vs. ES. ES is -160ish to retest lows ($8,000 notional), whereas the NQ will play catchup and shed -750 points to retest lows ($15,000 notional).
A 10% across the board average drop in the FAANG will cause the -750 NQ drop with a 20% FAANG drop creating a -1,500 NQ fall. 5 stocks holding the key to deciding whether so much equity value disappears or not, brilliant effing idea!
Not saying it will happen, but there is historic potential on the downside given the amount of money "entrusted" to automated trading and smarter than humans "AI". The historic part isn't a 20% decline, but how fast it might occur.
If the train wreck gets started, the humans will need to step in and pull the plug on the automation to stop it. A lot of these jokers that built the automation trading systems have never had to stare ruin baring down on them, so who knows how they will react when it happens. Best of luck to everyone!