The most recent "S" signal means submissive and ends the 4hr dominance of Bitcoin for the previous dominance signal ("D").
Expect further decline as Bitcoin is obviously not able to keep up the current price-range.
You can add the dominance indicator to any of your charts and combine it with your own TA, not just Bitcoin to see how your asset performs while Bitcoin is dominating (click on "Add to favorite scripts" and in "Indicators" pick it from your favs):