Another Hint... HYG

This one you could probably see for yourselves just using price, 3C adds another dimension though.

Price relative performance of High Yield Credit is far superior to the market, that is an obvious hint you can see without an indicator, most people just don't know to look at HYG.

Secondly that move in HYG was accumulated.

I'll bring you more, this seems to be somehow connected to Treasury Yields or they are part of the mechanics of the move.