1929:
1987:
Currently, the major indices are within 2% of all time highs
The potential for a HALO crash comes from indices pinned to all time highs while the majority of stocks deteriorate:
Russell 2000 Small Caps with S&P 500:
We've never seen this before (correlation bottom pane)
Even within the S&P 500 there is major erosion under the surface:
% of stocks above 200 DMA:
Advance-Decline 50 DMA
Very similar to 2011 i.e. the last significant sell-off (20%):
The ingredients are all in place, just add PANIC.