A pop in SPX occurred at 7pm -6 UTC, making a new high. This allowed the to expand both ways. From my point of view, this will allow the movement of the index to travel downward faster and for much longer without having to bounce back.
The blue arrows mark the opening up of the bands.
I had mentioned in my last gold chart that SPX ended today as it did before Brexit. We know what happened after Brexit.
Technically, the bands were flat on SPX , which made the candles bounce back hard. This time, the bands are not flat.
We'll see soon enough