Well, the VIX system (separate from the SPY system) triggers long (SPX) when VIX closes inside the Bollinger bands after closing outside them the day before. With the VIX system the confirmation comes on the next day after the inside close, if that day also closes inside.

    yes it's back inside today.  though

    Posted by matt on 20th of Aug 2021 at 02:37 pm

    yes it's back inside today. 

    though obviously the SPY and McClellan systems are much better getting you in much earlier than waiting for the VIX. We'll see what happens next week now

    I also found 2 or

    Posted by kevindeng0727 on 20th of Aug 2021 at 02:53 pm

    I also found 2 or 3 consuective close above upper BB for VIX to be good buy signals when SPY is still in an uptrend. 

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