Treasury Yields Hit 24-Year High as Oil Eases and AI Sector Swings

Key points

• The 10-year Treasury yield reached 5.28%, its highest since 2002, while the 30-year yield hit a high since 2002.
• The S&P 500 fell 0.3%, the Dow dropped 0.6%, and the Nasdaq declined 0.1% during the session.
• Brent crude oil prices fell to approximately $96.95 a barrel, easing from Monday's spike above $100.
• OpenAI scrapped the release of its GPT-6.1 Astra model due to safety and alignment concerns.
• Anthropic filed for an IPO targeting a valuation exceeding $2 trillion, with revenue surging 12-fold in 2025.
• Consumer confidence dropped to an over 12-year low, and job openings fell to 7.08 million in August.

Background

This volatility follows a period of mixed signals in late September. On September 23, the Nasdaq hit a record high as diplomatic talks between the U.S. and Iran cooled oil prices. However, by September 28, market breadth had deteriorated significantly, with Goldman Sachs noting that 45% of S&P 500 stocks had negative three-month beta, a divergence not seen since the dot-com bubble. This narrowness, driven by mega-cap tech firms, masked broader market weakness and skepticism about AI-driven profits.

How outlets are covering it

While all sources agree on the rise in Treasury yields and the general decline in major indices, they differ on the primary drivers. Investing.com and the Pittsburgh Post-Gazette emphasize the bond market rout and inflation concerns stemming from the U.S.-Iran conflict as the main pressure points. Yahoo Finance highlights the specific AI sector jitters, noting that OpenAI's decision to halt its next model and Anthropic's IPO filing created a 'seesaw' effect in tech stocks. CNBC provides a broader global context, noting that Asian markets closed lower and European stocks opened higher, while also highlighting that Australia raised interest rates to a 15-year high. The Pittsburgh Post-Gazette notes that oil prices eased, which capped the decline in stocks, whereas Investing.com points to the lack of diplomatic breakthroughs as keeping oil prices elevated relative to pre-war levels.

Why it matters

The surge in Treasury yields to 24-year highs signals a shift in monetary policy expectations, with markets pricing in further Federal Reserve rate hikes. This environment increases borrowing costs for businesses and consumers, potentially slowing economic growth. The divergence between the S&P 500 and broader market indices, along with the volatility in AI stocks, suggests that the current market rally is fragile and heavily dependent on a few mega-cap technology firms. If inflation remains stubbornly high, as indicated by the PCE data expected Wednesday, the pressure on equities could intensify, leading to a broader market correction.

What to watch

Investors are watching the release of the Personal Consumption Expenditures (PCE) inflation data on Wednesday and the nonfarm payrolls report on Friday for further clues on monetary policy. The Federal Reserve is expected to raise its benchmark interest rate again at its next meeting in October. Additionally, the market will monitor the progress of diplomatic talks between the U.S. and Iran, as any breakthrough could lead to a further decline in oil prices and a relief rally in equities. The AI sector will also be watched for any further developments regarding OpenAI's model releases and Anthropic's IPO process.