- Fitch Rating's US downgrade in August has dramatically shifted the debt market's composition.
- With the US now rated AA+, the amount of outstanding AAA sovereign debt shrank 85% to about $5 trillion.
- Meanwhile, speculative-grade sovereign debt was little changed at about $6.1 trillion.
Fitch Ratings' credit downgrade of US debt in August has shifted the bond market's composition, putting junk bonds in the lead.