Comparing two kinds ETFs HYG - ETF of junk bonds and TLT - Long term treasury bonds.

In this picture there are 2 kinds of ETFs on bonds junk (white line) and treasure bonds (blue). If junk bonds is growing up it means that investors are ready for big risk and reward. And vice versa if growing up tresaures bonds it means that investors are avoiding risk. Current  prices on shares   puffed up like bubble. And we see that more and more invesorts are fixing profit and invest in treasures bonds.  

It means that they expect some correlation or down trend. Comparing this two ETFs is good indicators of courage of investors.