US 10-Year Treasury Yield Tops 5% on Sept. 15, 2026, First Since Mid-2007

On September 15, 2026, the US 10-year Treasury yield rose above 5.021%, breaking the 5% threshold for the first time since mid-2007. The 5% level is regarded by the market as an important psychological level for the global asset-pricing anchor. US stock index futures and overnight trading declined that day. A 5% yield directly pushes up borrowing costs across the economy and weighs on valuations of technology growth stocks that depend on distant cash flows.

Historically, the 5% yield level has not been an absolute boundary. After yields broke above 5% in 2007, the US stock market did not immediately collapse; the real crash stemmed from the subsequent rupture of the subprime credit chain. In October 2023, after yields briefly rose above 5%, as inflation cooled and the artificial intelligence industry surged, the Nasdaq index rose about 40% over the following year. After the two breaches, the direction of market performance was not consistent.

Compared with 2007, the current market does not face subprime-crisis-style credit-chain risk. The core driver of rising yields has shifted from purely monetary policy to changes in fiscal sustainability and a structural contest for capital. Leveraged funds including hedge funds have replaced traditional long-term allocation funds, making the market more prone to sharp volatility during macroeconomic shocks. Although yields have already moved higher, share prices of some artificial intelligence-related companies have not suffered major drawdowns, and individual companies' shares are still hitting new highs. Nvidia, Micron and other companies have posted standout profit figures.