I've used 3 indicators, namely, MACD, RSI & BB width to show the idea of momentum building up in the background. If VIX spikes that's definitely not a good thing for the markets.
Volatility is a mean reverting animal so its just simple statistics that a big spike is coming.

TIMEFRAME: If vix starts to pop this week, the rally could end 3-4 weeks from now.
OscillatorsVolatilityWedge

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