Institutional Investment Management

William Blair Investment Management employs disciplined, analytical, research processes across a wide range of strategies, including U.S. equity and non-U.S. equity, fixed income, multi-asset, and alternatives.

About Us

At William Blair, we are passionate about the profession of investment management. We are an independent, 100% active employee-owned firm with no distractions from our sole priority: creating strong, risk-adjusted returns for our clients.

William Blair Investment Management is a global asset management firm based in Chicago with resources in New York, London, Zurich, Sydney, Stockholm, The Hague, Singapore,* and dedicated coverage in Canada. Our investment teams employ disciplined, analytical, research processes across a wide range of strategies, including U.S. equity and non-U.S. equity, fixed income, multi-asset, and alternatives.

We work closely with consultants, private and public pension funds, insurance companies, endowments, foundations, sovereign wealth funds, and financial advisors.

And, we are committed to active management. Our equity investment teams believe markets are inefficient at differentiating between average and quality growth companies—meaning bottom-up research is required to identify companies with strong long-term potential.

*William Blair International (Singapore) Pte. Ltd. is regulated by the Monetary Authority of Singapore under a Capital Markets Services License to conduct fund management activities.

We provide investment solutions to corporations, pension funds, governments and public agencies, endowments, foundations, Taft-Hartley plans, and other leading institutional investors across the globe.

  • Consultants

    Our senior relationship managers—who average more than 32 years of experience*—are committed to providing the highest quality service to the investment consultant community.

  • Foundations and Endowments

    Building on our long tradition of serving not-for-profit organizations and their boards, we provide a broad range of investment strategies to more than 170 endowments and foundations*.

  • Consultants

    We have deep experience working with government-sponsored plans and their consultants to help them meet participants’ needs, and oversee more than $22.3 billion* in assets for public pension plans.

  • Corporations

    Through customized investment strategies for corporations and their defined-contribution and defined-benefit plans, we oversee more than $14.2 billion* in assets for corporations across numerous industries.

  • Taft-Hartley

    We are dedicated to providing customized investment strategies for our Taft-Hartley clients, and oversee more than $4.3 billion* of Taft-Hartley assets via separate accounts and commingled funds.

    Download Taft-Hartley brochure
  • Financial Institutions

    Based on a philosophy of building enduring partnerships, we have a long history of working with financial institutions.

  • Financial Advisors

    We offer actively managed mutual funds across a wide range of strategies, including U.S. equity, global equity, emerging markets debt, fixed income, and global macro.

*As of September 30, 2021

William Blair Investment Management, LLC offers a number of investment vehicles, including separate accounts, mutual funds, CITs, and SICAVs.
  • Separate Accounts

    William Blair provides customized management of separate accounts across U.S. and non-U.S. strategies.

  • Collective Investment Trusts

    CITs are pooled investing vehicles through which assets of qualified clients (which include only employee benefit plans governed by ERISA and certain government-sponsored entities) are commingled for investment purposes. CITs offer qualified retirement plan sponsors help controlling costs due to increased regulatory scrutiny of fees and costs.

  • Mutual Funds

    By drawing on the firm’s deep investment talent and research capabilities, William Blair mutual funds are designed to meet a variety of investment objectives, from current income to capital appreciation.

    Go to the William Blair Funds website
  • SICAV Funds

    For non-U.S. citizens or residents, William Blair offers a series of Luxembourg-domiciled SICAV products that provide active management and quality growth investment expertise in U.S., global, and emerging markets.

    Go to the William Blair SICAV website
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$77.3+

billion in client assets

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$16.8+

billion in William Blair Funds assets

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$4.3+

billion in Taft-Hartley assets

As of September 20, 2021
Client asset disclosures

Our Active Approach

At William Blair, clients turn to us for an enhanced approach to active management. This approach consists of autonomous teams with shared values operating in an environment in which investment professionals can thrive. A strong foundation gives each team the freedom and resources to engage in high-conviction investing in the pursuit of long-term alpha.

Learn more about our active approach
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William Blair Funds

William Blair Funds manages $16.8 billion in assets (as of June 30, 2021) through actively managed mutual funds across a wide range of strategies, including U.S. equity, global equity, emerging markets debt, fixed income, and global macro.

Learn about the William Blair Funds

SICAV Funds

For non-U.S. citizens or residents, William Blair offers a series of Luxembourg-domiciled SICAV products that provide active management and quality growth investment expertise across markets and asset classes.

Learn about our SICAV Funds

Awards and Recognition

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ESG Integration

We consider environmental, social, and governance (ESG) factors to be among the many considerations that inform our investment decisions.

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MiFID II

In response to the European MiFID II Directive, William Blair Investment Management plans to absorb external research costs for clients globally, not just those subject to MiFID II’s research rules.

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