SPY dropped to S6 or S7 depending on various pivot calculators. SPY volume was WAY up (166M)...a lot of it in the last 30 minutes with a million shares a minute and most of it on the sell side.
China got whacked again overnight and the VIX jumped 10% (15% at one point), There was an afterrnoon rally back up to the pivot which held for exactly 2 minutes before plummeting to the depths once again.
Signals are red for Thursday but the resistance line for the VIX has been hit and so the odds are anything but sure. The SSO/SDS model worked perfectly today.