“Globally, the sovereign bond market is $58 trillion in size.
The investment grade sovereign bond market (meaning sovereign bonds for countries with credit ratings above BBB) is around $53 trillion. And if you’re talking about countries with credit ratings of A or higher, it’s only $43 trillion.
This is the ultimate backstop for over $700 trillion in derivatives. And a whopping $555 trillion of that trades based on interest rates (bond yields).”