William Blair International Leaders Concentrated Strategy


Diversifying a Portfolio by Growth Stages

Companies at different stages of the corporate lifecycle exhibit different risks and return characteristics, providing an opportunity to further diversify a portfolio.


High-Conviction Ideas

High conviction international portfolio of 25-40 stocks. Leaders are companies that we believe demonstrate consistent value creation, competitive dominance, and sustainability of critical inputs.

Unconstrained Portfolio

Broad investment universe across market cap, region, industry, and corporate lifecycle.

Disciplined Investment Approach

Combines deep fundamental research with systematic inputs to consistently identify alpha opportunities.

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Enduring Partnership

Our active ownership culture creates long-term client relationships by aligning with your interests and helping you achieve successful investment outcomes. Contact us to learn how we can partner with you.


This content is for informational and educational purposes only and not intended as investment advice or a recommendation to buy or sell any security. Investment advice and recommendations can be provided only after careful consideration of an investor’s objectives, guidelines, and restrictions.

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. Different investment styles may shift in and out of favor depending on market conditions. Individual securities may not perform as expected or a strategy used by the Adviser may fail to produce its intended result.

Investing in the bond market is subject to certain risks including market, interest rate, issuer, credit, and inflation risk. Rising interest rates generally cause bond prices to fall. High-yield, lower-rated, securities involve greater risk than higher-rated securities. Sovereign debt securities are subject to the risk that an entity may delay or refuse to pay interest or principal on its sovereign debt because of cash flow problems, insufficient foreign reserves, or political or other considerations. Derivatives may involve certain risks such as counterparty, liquidity, interest rate, market, credit, management, and the risk that a position could not be closed when most advantageous. Currency transactions are affected by fluctuations in exchange rates; currency exchange rates may fluctuate significantly over short periods of time. Diversification does not ensure against loss. The inclusion of Environmental, Social and Governance (ESG) factors beyond traditional financial information in the selection of securities could result in a strategy's performance deviating from other strategies or benchmarks, depending on whether such factors are in or out of favor. ESG analysis may rely on certain values based criteria to eliminate exposures found in similar strategies or benchmarks, which could result in performance deviating.

There can be no assurance that investment objectives will be met. Any investment or strategy mentioned herein may not be appropriate for every investor. 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. Past performance is not indicative of future returns.

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