The collapse in global bond yields is not healthy, or normal.
It’s been a big week in the global bond market with the German 10-year bund yield falling below zero for the first time ever, Swiss 30-year debt flirting with negative territory, and U.S. Treasury yields falling to the lowest levels in 16 months.
Currently, more than $10 trillion worth of sovereign debt carries negative yields, according to Fitch Ratings. Another $500 billion of European corporate debt is yielding less than zero as well, according to Reuters.
http://fortune.com/2016/06/17/janet-yellen-negative-interest-rates/