Below is the Bloomberg Barclays US corporate high yield Average Option adjusted spread on a daily net percent change ,A general overview of the High yield market. Remember the higher the spread the more stress or worries about high yield debt,this may come from worries about An economic downturn or slowdown.Handful of people flagging up different charts showing the move higher in High yield over the last few days especially yesterdays move.The chart below shows the largest move higher in years,question now, is it one off event or a trend higher? all depends on trade talks.