The Dark Index (DIX) by @SqueezeMetrics is a clever tool for traders. 

Based on our analysis, we found that when the 21 day average DIX values are &gt;0.46 it generally leads to above average $SPX returns 1 year later and &lt;0.37 leads to under-performance.

$SPY #ES_F https://t.co/bybqAcwd4R