One is the ratio of investment grade corporate bonds, rated AAA, with US Treasury bonds. That ratio has been going down, in a "flight to safety."
The other is the relationship between investment grade corporate bonds and high yield corporate bonds. That ratio has been going up, also in a "flight to safety." (click for updates).
Remember: these are not just squiggles on a chart. They have profound implications for the health of businesses and for future levels of unemployment.
