An interesting chart of the 30-year sovereign yields less Fed Funds rate reveals that much of the world is in a state of global yield curve inversion. (Graph courtesy of the great folks at Crescat Capital).
While the US is not in a state of yield curve inversion (except for the 1-5 segment), the US remains (for the moment) is positive territory.
I prefer using the 10-year Treasury Note for curve analysis rather than the 30-year Treasury Bond.
One might observe that Treasury volatility measures are quite low … again.
So, yield curve inversion is the same all over the world. The US seems to be on track to invert as well.