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Fixed income

A disciplined approach to value in fixed income

May 19, 2026 - 5 min

Key takeaways

  • Harris | Oakmark’s value-driven fixed-income approach seeks to deliver durable, risk-aware outcomes for clients by focusing on what ultimately matters: underlying credit strength.
  • Rather than chasing yield or timing macro shifts, the team applies deep, bottom-up research to identify bonds they believe are mispriced by short-term market pressures.
  • A deliberately concentrated portfolio, enhanced by close collaboration with the equity research team, allows high-conviction ideas to meaningfully impact results.
  • Market volatility is viewed not as a risk to avoid, but as an opportunity to invest in attractively valued credits.

Q&A with Adam Abbas, Head of Fixed Income

Harris | Oakmark is known for value investing. How do you define “value” in fixed income?

We define value as buying bonds at a meaningful discount to their intrinsic value: the spread that properly compensates us for true credit risk. When determining intrinsic value, we evaluate an issuer’s long-term ability to meet obligations based on business durability, cash flow strength, balance sheet resilience, recovery prospects, and management’s capital allocation approach both in steady states and under stress.

Like Harris | Oakmark equity investing, we aim to focus on identifying value over a medium- to long-term horizon at the company or issuer level. Rather than making short-term, macro-driven bets, such as quarter-to-quarter rate calls, we aim to concentrate on bottom-up opportunities where we think the market is mispricing risk. When we can buy a bond at a wider spread than its intrinsic value implies, we’re being “overpaid for the risk” – often due to short-term technical pressures or overdone negative sentiment rather than weakening long-term fundamentals. Ultimately, we believe value in fixed income is the relationship between price and true creditworthiness, and our aim is to be more than fairly compensated for the risk we take.
 

What most differentiates your strategy, and how does it add value for clients? 

The process for generating returns through true bottom-up, concentrated credit selection and value-guided asset allocation rather than relying on making large nonconsensus duration or macro calls is what we believe most differentiates our strategy. This approach is rooted in the Harris | Oakmark tradition, bringing thoughtful, company-level research to fixed-income investing. Every position begins with a fundamental credit thesis, not an economic forecast, giving our analysts the freedom to uncover mispriced, idiosyncratic opportunities that have the potential to meaningfully influence performance in a way that is not heavily reliant on specific short-run macroeconomic outcomes.

Our portfolio is intentionally concentrated enough for individual ideas to matter, and we pair this with the discipline Harris | Oakmark has applied for decades: understanding long-term business fundamentals, cash-flow durability, default risk, and management behavior. We also benefit from an integrated research platform in which our fixed-income team works with our firm’s equity analysts, giving us differentiated insight across the capital structure.

Ultimately, the value we add comes from delivering a low-volatility core-plus bond strategy that invests primarily in investment-grade securities, can stand alone or complement a core allocation, and has performance driven by a rigorous, repeatable credit selection investment process.
 

Do you collaborate with the equity research team? 

Yes. We believe one of the most powerful advantages of the Harris | Oakmark platform is the depth of collaboration between fixed-income and equity teams.

We often describe this as a specialized strategy with a broad platform, meaning our fixed-income capabilities are meaningfully supported by the firm’s equity resources. As such, we get vital access to management teams, which we believe is imperative to understanding capital allocation and management’s general competence, as well as how to think about balance sheet risk relative to future return on capital initiatives. Almost every position in the portfolio has been vetted across teams, resulting in valuable insights gleaned from the equity side.

Overall, the equity team’s deep understanding of management decision-making and long-term fundamentals enhances the fixed-income team’s ability to move quickly and confidently when market opportunities arise – and nimbly capture value over the long term.
 

To what extent is credit selection a driver of returns in your strategy? 

Our portfolio is built from the bottom up, driven by individual credit merit and idiosyncratic return potential; macro views never drive credit selection. We identify our best ideas first, then size and structure them to create what we believe will be the strongest overall portfolio.

Portfolio construction is applied only after credits are selected for our universe to choose from; it never dictates which bonds we buy.

Once we identify the credits we view as the best idiosyncratic opportunities, we focus on sizing to balance upside and downside risks, and aggregate positions so that the implementation aligns with our value framework at the sector, quality, curve, and overall duration level. For example, when our best bottom-up ideas also offer superior relative value at the sector level for thematic reasons, we weight them more heavily or move out the duration curve to maximize both idiosyncratic and sector-level return potential.
 

How do you think about short-term volatility in your approach? 

When spreads widen and markets become more volatile and fearful, we tend not to get scared but excited. Correlations often increase the most at the sector, asset class, and index level, and there is less discernment at the individual company or security level. That creates more inefficiency.

Indeed, if you look at our track record since inception, our best periods of outperformance have historically come after “risk-off” periods, when there is measurable fear in the marketplace. During those times, we are generally deploying capital out of Treasuries, high-quality agencies and our highest-quality credit bets into our favorite ideas to own over the long horizon.
 

Where do you typically find the most attractive opportunities? 

Opportunities take many forms, but the unifying thread for us is always that we think the market is undervaluing something fundamental about a business over the long term. Often, this happens when investors focus too heavily on short-term technical pressures like momentum, sentiment and supply dynamics or when fixed-income managers, motivated by asymmetric downside bond outcomes and very small position sizes, sell first and analyze later. It can also occur when the market fails to recognize a company’s flexibility in managing its balance sheet, accessing capital, refinancing or repurchasing debt, or shifting capital allocation between growth and preservation. These overlooked dynamics frequently create the most compelling opportunities for us.

The information, data, analyses, and opinions presented herein (including current investment themes, the portfolio managers’ research and investment process, and portfolio characteristics) are for informational purposes only and represent the views of the portfolio managers as of the date written and are subject to change and may change based on market and other conditions and without notice.

This material is not intended to be a recommendation or investment advice; does not constitute a solicitation to buy, sell or hold a security or an investment strategy; and is not provided in a fiduciary capacity. The information provided does not take into account the specific objectives or circumstances of any particular investor, or suggest any specific course of action. Investment decisions should be made based on an investor’s objectives and circumstances, and in consultation with his or her financial professionals.

All investing involves risk, including the risk of loss. There is no guarantee the Fund’s investment objective will be achieved.

Unlike passive investments, there are no indexes that an active investment attempts to track or replicate. Thus, the ability of an active investment to achieve its objectives will depend on the effectiveness of the investment manager.

Fixed-income risks include interest-rate and credit risk. Typically, when interest rates rise, there is a corresponding decline in bond values. Credit risk refers to the possibility that the bond issuer will not be able to make principal and interest payments. Bond values fluctuate in price so the value of your investment can go down depending on market conditions.

Fixed-income securities may carry one or more of the following risks: credit, interest rate (as interest rates rise, bond prices usually fall), inflation and liquidity.

Value investing carries the risk that a security can continue to be undervalued by the market for long periods of time. Below investment-grade fixed-income securities may be subject to greater risks (including the risk of default) than other fixed income securities.

Before investing in any Oakmark Fund, you should carefully consider the Fund's investment objectives, risks, management fees and other expenses. This and other important information is contained in a Fund's prospectus and summary prospectus. Please read the prospectus and summary prospectus carefully before investing. For more information, please visit oakmark.com, or call 1-800-OAKMARK (1-800-625-6275).

The Oakmark Funds are distributed by Harris Associates Securities L.P., member FINRA.

Natixis Distribution, LLC (member FINRA | SIPC), a limited purpose broker-dealer and the distributor of various registered investment companies for which advisory services are provided by affiliates of Natixis Investment Managers, is a marketing agent for the Oakmark Funds.

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