The 10-year Treasury yield is breaking out and 5% could be just the beginning. Here’s why that matters.

The US 10-year Treasury yield surged above 4.75% on Monday, marking its highest level since January 2025. This rise was driven by increasing oil prices, which boosted expectations that the Federal Reserve may hike interest rates to curb persistent inflation, according to a Bloomberg report. The rise in oil prices was further fueled by President Donald Trump's threat of additional attacks on Iran.

The impact of the yield increase was felt across the entire Treasury curve. The yield on five-year Treasuries hit its highest level since early 2025, while the yield on 30-year Treasuries surpassed last week's highs. These moves signal heightened concern among investors about rising government debt and the potential for more aggressive monetary tightening by the Federal Reserve.

The selloff in Treasury yields intensified in recent sessions as market participants weighed these concerns. In addition to the rise in yields, short-term Treasury yields also jumped on Friday following remarks by Fed Chairman Kevin Warsh at the central bank's Jackson Hole symposium. Warsh suggested a higher likelihood of interest rate hikes to combat inflation.

Analysts and investors are closely watching key economic indicators, such as the August employment report and consumer-price data scheduled for September 11th, to gauge the central bank's readiness to act. If the employment data remains stable while inflation remains elevated, the Fed may be inclined to raise interest rates as previously discussed by Warsh.

The 30-year Treasury yield rose approximately five basis points to nearly 5.26% on Monday, still below the multiyear highs seen in mid-August. However, longer-term yields had eased following the Treasury Department's announcement of increased debt buybacks to support market liquidity and value.

Experts suggest that longer-dated Treasuries could benefit from month-end bond-index rebalancing, scheduled for 4 p.m. New York time. A large amount of 10- to 30-year debt issued during August is expected to be added to major benchmarks, potentially providing some support.

Despite these developments, options traders are positioning for further declines in longer-maturity Treasuries. Notably, a trade involving roughly $6.5 million worth of December put options on US Treasury bond futures was placed, with a strike level implying that 30-year yields could climb to around 5.7% by November 20th, up from the current level of roughly 5.25%. The options' expiration date further adds to the potential for additional losses in longer-term Treasuries.

The upcoming supply of Treasuries, particularly in the corporate bond market, is also expected to weigh on longer-term yields. September is historically a busy month for corporate bond issuances, with expectations suggesting that issuance in September will surpass previous records.