The 10-year Treasury yield is at its highest in nearly two decades. How we got here

• Year-ahead inflation expectations jumped to 4.6% in September from 4% in August, with markets pricing in a 64% likelihood of an October Fed rate hike
• AI-related debt issuance could reach $300 billion to $570 billion in 2024 as companies finance data-center, semiconductor, and utility infrastructure buildout
• Heavy bond supply from both federal deficit financing and corporate AI spending is the primary driver of yield increases, with elevated issuance expected to continue through next year

Market Summary: 10-Year Treasury Yield Reaches 16-Year High

Key Developments

The 10-year Treasury yield surged to 5.23% on Friday, marking its highest level since 2007. The benchmark yield has climbed rapidly from just below 4.8% earlier this month, signaling a significant shift in market dynamics.

Primary Drivers

While sticky inflation and Federal Reserve rate hike expectations are contributing factors, heavy bond issuance has emerged as the dominant driver in 2024, according to Thierry Wizman, global FX and rates strategist at Macquarie Group. Key inflation data shows the University of Michigan's year-ahead inflation expectations jumped to 4.6% in September from 4% in August—the highest since June. Fed funds futures indicate a 64% probability of an October rate hike.

AI-Fueled Borrowing Surge

A major factor is unprecedented corporate debt issuance to finance artificial intelligence infrastructure. Five tech giants—Alphabet, Amazon, Meta Platforms, Microsoft, and Oracle—issued approximately $132 billion in debt through July, dramatically exceeding the $35 billion annual average from 2020-2024. Total AI-related debt issuance could reach $300 billion to $570 billion in 2024 as companies across data centers, semiconductors, and utilities fund expansion.

Market Implications

The combination of federal deficit financing and corporate AI spending has created abnormal bond supply, pressuring yields higher. This elevated issuance is expected to continue through 2024 and into 2025, suggesting yields could climb further. Higher yields present dual challenges: increased corporate borrowing costs and enhanced competition for equities as bonds become more attractive to income-focused investors.

Bottom line: Bond supply dynamics, not just inflation concerns, are reshaping the fixed-income landscape.