August 6, 2025 | Emerging Markets Debt

Disruption Creates Opportunity in Emerging Markets Debt

Diver swimming to light at surface

Uncertainty about the future path of tariffs led to heightened market swings in the second quarter, and in this environment, emerging markets (EM) debt valuations have improved. We view the recent sell-off as an opportunity to add exposure to the asset class at more attractive levels, and below break down some of our largest active hard-currency positions by beta bucket, which is how we allocate our risk budget.


Beta-bucket approach select active positions chart


High-Beta Bucket

The largest overweight positions on a spread duration basis were in Ukraine, El Salvador, and Zambia. Conversely, the largest underweight positions were in Kenya, Nigeria, and Rwanda.

Ukraine (overweight): We are overweight via warrants on the potential for conflict negotiations, multilateral support, and a more optimistic growth outlook. However, we recently reduced our allocation to “A” bonds based on valuations—that is, to raise the beta in case of misplaced pessimism in the conflict resolution.

El Salvador (overweight): We recently increased our overweight as El Salvador had lagged peers, but its International Monetary Fund (IMF) program remains on track and adherence to the program should be achievable because of cuts in the fiscal deficit. The long end of the curve remains steep, making it attractive, in our opinion.

Zambia (overweight): Following the restructuring and the exchange into two performing bonds—one with triggers for a coupon step-up that we believe are likely to be met within the next 12 months—we remain broadly constructive on Zambia’s outlook. The shock from the recent drought is easing, and investment in the natural resource sector is gaining momentum, with copper production poised to expand.

Kenya (underweight): We have concerns about the fiscal outlook, despite funding support from the United Arab Emirates. While the government aims to reduce borrowing, it has struggled to implement revenue measures, and further tax increases appear politically untenable. Spending cuts are also likely to face resistance, casting doubt on the viability of the current macroeconomic plan under the IMF program. In our view, narrowing the fiscal deficit and improving revenue collection will be essential to restoring credibility—particularly with public dissatisfaction high and limited time remaining before the September 2027 elections.

Nigeria’s Dangote refinery is now operational and may reduce reliance on fuel imports, but recent oil price volatility poses a risk to government revenues.

Nigeria (underweight): We are currently neutral on Nigerian sovereign credit, with a small underweight in cash, as valuations have tightened. Fundamentals have improved somewhat, supported by exchange rate reform, monetary tightening, and progress on fuel subsidy reduction. However, structural challenges remain significant. The long-delayed Dangote refinery is now operational and may reduce reliance on fuel imports, but recent oil price volatility—trending lower—poses a risk to government revenues.

Rwanda (underweight): We do not hold any Rwanda bonds, because we believe valuations offer limited protection against risks to the fundamental outlook stemming from the country’s wide twin deficits and reliance on concessional financing.

Medium-Beta Bucket

The largest overweight positions on a spread duration basis were in Mexico, Colombia, and Brazil. Conversely, the largest underweight positions were in Bahrain, South Africa, and Costa Rica.

Mexico (overweight): We are overweight Pemex, given strong sovereign support and more attractive valuations relative to the sovereign. We remain underweight Mexican sovereign bonds on valuation grounds but continue to hold positions in financials and airlines.

Colombia (overweight): We increased our overweight based on valuations. Colombia had underperformed on concerns about its rising fiscal deficit, but we now believe it looks cheap versus peer countries. With President Gustavo Petro’s popularity low, we also anticipate a potential regime change in the 2026 elections.

In Brazil we’re seeing better corporate opportunities following strong sovereign performance in the first half of the year.

Brazil (overweight): We’ve recently added corporate positions, seeing better opportunities following strong sovereign performance in the first half of the year. Our current exposure includes an independent oil and gas producer, an issuer linked to the Petrobras ecosystem, and a name in environmental services.

Bahrain (underweight): We are underweight as a result of more volatility in regional geopolitics, the country’s relatively weak fiscal-reform efforts, lower oil prices, and tight valuations.

South Africa (underweight): We believe there is limited room for outperformance versus peers at current valuations. Political risks have subsided with the passing of the budget in parliament, while external and fiscal sector performances are relatively resilient (with a primary surplus and modest current account deficit). Nevertheless, relations in the Government of National Union (GNU) could drive ongoing asset-price volatility as the market weighs the risks to political stability. Still, we believe that the Democratic Alliance (DA) and the African National Congress (ANC) have a vested interest in keeping the GNU together ahead of municipal elections and the ANC National Conference scheduled for late 2026. Broadly speaking, the fundamental weakness in South Africa remains endemically low growth.

Costa Rica (underweight): Fundamentals remain strong, but we believe valuations are unattractive because spreads have compressed materially.

Low-Beta Bucket

The largest overweight positions on a spread duration basis were in Paraguay, United Arab Emirates, and Trinidad and Tobago. Conversely, the largest underweight positions were in Malaysia, China, and Indonesia.

Paraguay (overweight): Our overweight is based on attractive valuations relative to low-beta peers and solid fundamentals. The country’s ratio of debt to gross domestic product (GDP) is low, and it has a strong history of low fiscal deficits.

United Arab Emirates (overweight): Our overweight position is driven predominantly by a combination of corporates and the smaller emirates, where we believe valuations are attractive relative to Abu Dhabi.

Trinidad and Tobago (overweight): We finds the country’s valuations appealing relative to its low-beta peers.

Indonesia is also expected to be a major external debt issuer in 2025.

Malaysia (underweight): We are underweight sovereign bonds as a result of tight valuations but maintain selective overweights in quasi-sovereigns, where we see more attractive relative value.

China (underweight): Valuations are tight and we see unpredictable regulatory risks to Chinese state-owned entities. Based on a bottom-up analysis, we hold selective corporate bonds at what we believe are attractive valuations and positive credit trajectories.

Indonesia (underweight): Valuations remain unappealing, and the country’s fundamental outlook has become less clear following the February 2024 presidential election and the new administration’s October inauguration. With a shift in focus from economic stability to growth, the risk of fiscal slippage has increased. Indonesia is also expected to be a major external debt issuer in 2025. That said, we maintain diversified corporate exposure, supported by a resilient outlook across financials, renewable utilities, and oil and gas.


Marco Ruijer, CFA, is a portfolio manager on William Blair’s emerging markets debt team.

Subscribe Now

Want the latest insights on the economy and other forces shaping the investment landscape?

Subscribe to our Investing Insights newsletter. 

Any investment or strategy mentioned herein may not be appropriate for every investor. There can be no assurance that investment objectives will be met. Products and services listed are available only to residents of this jurisdiction and may only be available to certain categories of investors. The information on this website does not constitute an offer for products or services, or a solicitation of an offer to any persons outside of this jurisdiction who are prohibited from receiving such information under applicable laws and regulations. Nothing on this webpage should be construed as advice and is therefore not a recommendation to buy or sell shares.

Please carefully consider the William Blair Funds’ investment objectives, risks, charges, and expenses before investing. This and other information is contained in the Funds’ prospectus and summary prospectus, which you may obtain by calling 1-800-742-7272. Read the prospectus and summary prospectus carefully before investing. Investing includes the risk of loss.

The William Blair Funds are distributed by William Blair & Company, L.L.C., member FINRA/SIPC.

The William Blair SICAV is a Luxembourg investment company with variable capital registered with the Commission de Surveillance du Secteur Financier (“CSSF”) which qualifies as an undertaking for collective investment in transferable securities (“UCITS”). The Management Company of the SICAV has appointed William Blair Investment Management, LLC as the investment manager for the fund.

Please carefully consider the investment objectives, risks, charges, and expenses of the William Blair SICAV. This and other important information is contained in the prospectus and Key Investor Information Document (KIID). Read these documents carefully before investing. The information contained on this website is not a substitute for those documents or for professional external advice.

Information and opinions expressed are those of the authors and may not reflect the opinions of other investment teams within William Blair Investment Management, LLC, or affiliates. Factual information has been taken from sources we believe to be reliable, but its accuracy, completeness or interpretation cannot be guaranteed. Information is current as of the date appearing in this material only and subject to change without notice. Statements concerning financial market trends are based on current market conditions, which will fluctuate. This material may include estimates, outlooks, projections, and other forward-looking statements. Due to a variety of factors, actual events may differ significantly from those presented.

Investing involves risks, including the possible loss of principal. Equity securities may decline in value due to both real and perceived general market, economic, and industry conditions. The securities of smaller companies may be more volatile and less liquid than securities of larger companies. Investing in foreign denominated and/or domiciled securities may involve heightened risk due to currency fluctuations, and economic and political risks. These risks may be enhanced in emerging markets and frontier markets. Investing in the bond market is subject to certain risks including market, interest rate, issuer, credit, and inflation risk. High-yield, lower-rated, securities involve greater risk than higher-rated securities. Different investment styles may shift in and out of favor depending on market conditions. Diversification does not ensure against loss.

Past performance is not indicative of future returns. References to specific companies are for illustrative purposes only and should not be construed as investment advice or a recommendation to buy or sell any security.

William Blair Investment Management, LLC is an investment adviser registered with the U.S. Securities and Exchange Commission.

Issued in the United Kingdom by William Blair International, Ltd., authorized and regulated by the Financial Conduct Authority (FCA), and is only directed at and is only made available to persons falling within articles 19, 38, 47, and 49 of the Financial Services and Markets Act of 2000 (Financial Promotion) Order 2005 (all such persons being referred to as "relevant persons").

Issued in the European Economic Area (EEA) by William Blair B.V., authorized and supervised by the Dutch Authority for the Financial Markets (AFM) under license number 14006134 and also supervised by the Dutch Central Bank (DNB), registered at the Dutch Chamber of Commerce under number 82375682 and has its statutory seat in Amsterdam, the Netherlands. This material is only intended for eligible counterparties and professional clients.

Issued in Switzerland by William Blair Investment Services (Zurich) GmbH, Talstrasse 65, 8001 Zurich, Switzerland ("WBIS"). WBIS is engaged in the offering of collective investment schemes and renders further, non-regulated services in the financial sector. WBIS is affiliated with FINOS Finanzomubdsstelle Schweiz, a recognized ombudsman office where clients may initiate mediation proceedings pursuant to articles 74 et seq. of the Swiss Financial Services Act ("FinSA"). The client advisers of WBIS are registered with regservices.ch by BX Swiss AG, a client adviser registration body authorized by the Swiss Financial Market Supervisory Authority ("FINMA"). WBIS is not supervised by FINMA or any other supervisory authority or self-regulatory organization. This material is only intended for institutional and professional clients pursuant to article 4(3) to (5) FinSA.

Issued in Australia by William Blair Investment Management, LLC (“William Blair”), which is exempt from the requirement to hold an Australian financial services license under Australia's Corporations Act 2001 (Cth). William Blair is registered as an investment advisor with the U.S. Securities and Exchange Commission (“SEC”) and regulated by the SEC under the U.S. Investment Advisers Act of 1940, which differs from Australian laws. This material is intended only for wholesale clients.

Issued in Singapore by William Blair International (Singapore) Pte. Ltd. (Registration Number 201943312R), which is regulated by the Monetary Authority of Singapore under a Capital Markets Services License to conduct fund management activities. This material is intended only for institutional investors and may not be distributed to retail investors.

Issued in Canada by William Blair Investment Management, LLC, which relies on the international adviser exemption, pursuant to section 8.26 of National Instrument 31-103 in Canada.