Bond Yields & Market Regime

What Bond Yields Represent

A bond yield is the annualized return an investor earns by holding a bond to maturity. For Treasury bonds, this yield is often decomposed into three components: expected real interest rates, expected inflation, and a term premium that compensates investors for duration risk and uncertainty.

Crucially, bond prices and yields move inversely. When investors rush to buy Treasuries (flight to safety), prices rise and yields fall. When investors sell bonds to buy riskier assets, prices fall and yields rise. This inverse relationship makes yield direction a real-time gauge of risk appetite.

Flight to Safety: When Yields Plunge

During market crises, investors engage in a "flight to safety" or "flight to quality," selling equities, credit, and other risk assets to buy U.S. Treasuries. This behavior is driven by Treasuries' status as the world's benchmark safe asset: they are backed by the full faith and credit of the U.S. government, denominated in the world's reserve currency, and among the most liquid securities on the planet.

When a flight to safety occurs, the speed and magnitude of yield declines can be dramatic. The 10-year yield fell from about 1.9% to 0.5% in just weeks during the March 2020 COVID crash. Similar rapid declines accompanied the 2008 financial crisis, the 2011 European debt crisis, and the August 2019 recession scare.

The Yield Curve: Beyond the 10-Year

While the Alphameter focuses on the 10-year yield, the broader yield curve provides important context. The yield curve plots Treasury yields across different maturities, from 1-month to 30-year. In normal economic conditions, longer maturities carry higher yields (a positively sloped curve) because investors demand compensation for holding bonds over longer time horizons.

An inverted yield curve indicates that the bond market expects future growth to weaken and the central bank to eventually cut rates. Every U.S. recession since the 1960s has been preceded by a yield curve inversion, though the lead time has varied considerably.

Rate of Change Methodology

The absolute level of the 10-year yield is heavily influenced by the Federal Reserve's policy rate and structural factors like long-term inflation expectations and the global savings glut. A 10-year yield of 4% may be "normal" in one environment and "elevated" in another.

For regime detection, the Alphameter uses the 20-day rate of change in the 10-year yield. This captures whether yields are currently rising (growth confidence, risk-on) or falling (flight to safety, risk-off), independent of the absolute level.

How the Alphameter Uses Bond Yields

Bond yields carry a 15% weight in the Alphameter composite score. The scoring process:

One important nuance: extremely rapid yield increases can also be risk-off, as they may signal a disorderly bond sell-off driven by fiscal concerns or forced selling (as seen in the UK gilt crisis of September 2022). The normalization function accounts for this non-linearity, treating very sharp yield spikes differently from gradual, healthy yield increases.

Practical Considerations

The relationship between bond yields and risk has evolved over time. In the post-2008 era of quantitative easing, central bank bond purchases suppressed yields below their natural level, at times weakening the correlation between yields and organic growth expectations. Similarly, in high-inflation environments (like 2022), yields may rise not because of growth optimism but because of inflation concerns, complicating the risk-on interpretation.

The Alphameter mitigates these issues through its multi-indicator approach. If yields are rising due to inflation rather than growth, other indicators (like a falling Copper/Gold ratio or rising VIX) will provide the offsetting risk-off signal. No single indicator tells the full story, which is precisely why the composite approach is valuable.

Data Source