As unconstrained fixed income investing has grown in popularity in recent years, many strategies and approaches have been marketed under this generic term. To WisdomTree, an unconstrained fixed income strategy allows an investment manager increased flexibility to generate total returns and manage risk compared to an index-based approach. Unconstrained investment managers choose the investments as opposed to tracking traditional index methodologies—the most common of which just allocate the most weight to issues with the most debt outstanding.

Unconstrained ≠ Undisciplined Approach

Despite the name, unconstrained strategies are not undisciplined—a focus on risk is essential to management of these strategies. The specific level of risk that the manager targets is a primary differentiating factor among unconstrained strategies; some target bond-like volatility, while others are more opportunistic and target much higher levels of risk. As we outline below, an unconstrained approach to fixed income may help investors navigate today’s particularly uncertain market environment.

Traditional Fixed Income Benchmarks: Less Yield, More Interest Rate Risk

Why are these strategies in such high demand today? On a risk-adjusted basis, the Barclays U.S. Aggregate Index (Agg) has been one of the best performing strategies over the last 10 years as interest rates fell to record lows.1 Unfortunately, the fall in rates has coincided with a rise in interest rate risk sensitivity over time.

Today, the balance between yield and interest rate risk leaves many bond investors more vulnerable to the potential for negative returns. As we show in the graph below, the amount of income potential has slowly decoupled from the amount of interest rate risk that an investor must assume to own strategies tracking the Barclays U.S. Aggregate Index. While this has been great for total returns in a falling rate environment, what happens should this trend reverse?

Evolution of Risk vs. Return of the Barclays U.S. Aggregate Index

For definitions of terms in the chart, visit our glossary.

Growing Headwinds for Core Fixed Income

As the Federal Reserve (Fed) looks to lift rates for the first time in nearly a decade, we believe that interest rate risk is likely to serve as a headwind rather than a tailwind going forward. In this investment environment, investors should ask themselves if the Agg’s current composition is reflective of their investment goals. As government issuance has risen in the United States, will this subset of the market offer compelling opportunities for income given the current interest rate environment? Put simply, an index is a reflection of issuance, not value.

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