A couple of factors I noted from last night's fall in the markets:
With such a large fall in US markets I would have expected a $5 fall in oil prices.
With the flight to so-called quality, I expected a much larger fall in precious metals.
Copper also held up relatively well. Today's stocks on the LME have fallen by another 0.7% or 3,000 tonnes to 412,000 tonnes. At their peak, a couple of months ago, stocks were at 475,000 tonnes.
This signals accompanying this fall don't seem as obvious or as aligned with more substantial recent falls.