US stocks extend sell-off as bond yields jump following Fitch downgrade of US credit rating

• US stocks continued to slide Thursday following Fitch's US credit downgrade.
• The hit to America's credit rating also caused bond yields to jump.
• Meanwhile, investors are waiting on earnings from mega-cap tech firms Apple and Amazon.

US stocks fell further on Thursday as bond yields continued to climb following Fitch's US credit downgrade earlier this week.

The rating agency slashed the US's long-term credit rating from the top-tier AAA score to AA+ late Tuesday. The 10-year Treasury yield rose further above the 4% level as bond prices slumped.