VIX

When market is up, VIX is down.
When market is down, VIX is up.

If market is up, say, 3% - you want the VIX to be down almost by double. Anywhere from 5-7% (or higher).

If market is up 3%, and VIX is only down 1.5%, it does not really confirm the up move.

If market is up 1% and VIX is down alot, like 10%, than that is very bullish.
If market is down 1%, and VIX is up a lot, like 10% than that is very bearish.