William Blair & Company L.L.C.
Data sourced from SEC public records (and other sources when available). Refreshed weekly • Updated today.
Client AUMClient assets under management
$52,677,435,980
Clients
35,296
Advisors
332
across 63 offices
About
William Blair’s Private Wealth Management division provides discretionary and non‑discretionary investment management, financial planning and wealth services to individuals (including high‑net‑worth clients), foundations, pension and corporate clients. The firm also sponsors a wrap fee program, supports platform and sub‑advisory arrangements, and distributes affiliated pooled products while operating as an SEC‑registered investment adviser and broker‑dealer.
The firm pursues active, research‑driven management across equities, fixed income and alternative strategies, offering proprietary home‑office models and model portfolios to advisory clients and to other registered investment advisers through a Non‑Discretionary Model Portfolio Program. PWM advisors may hire third‑party Sub‑Managers through platform providers or engage the affiliate William Blair Investment Management LLC (WBIM) as a sub‑adviser, and William Blair provides access to private funds and co‑investment opportunities via its MB Investments Program.
Notable features in the brochure include the firm’s scale — roughly $64 billion in reported AUM and a reported 322 advisors, implying approximately $200 million of AUM per advisor — and an in‑house MB Investments structure where clients must affirmatively elect participation and where an affiliate (the MB General Partner) performs valuation and may receive carried interest. The brochure also details integrated operational relationships with custodial/clearing and platform providers (including NFS) and affiliated product conduits (WBIM, affiliated mutual funds and private funds), which influence product access, allocation and certain fee and credit arrangements.
Client services
Expertise
Occupation focus
Fee options
$0+: Up to 2.00% annually, subject to negotiation, payable quarterly (in advance or arrears) $50,000+: Minimum for PWM Non-Wrap Program Accounts $100,000+: Minimum for William Blair Wrap Program Accounts $100,000+: Minimum for Platform Separate Accounts (may be higher for certain third-party managers) $2,000,000+: Minimum for WBIM Sub-Advisory/WBIM Separate Accounts
Performance-based fees (carried interest) apply only to MB Partnership Series as described in fund documents; not offered generally to clients.
Account minimum: $50,000 for PWM Non-Wrap Program Accounts; $100,000 for William Blair Wrap Program Accounts; $100,000 for Platform Separate Accounts (may be higher for certain third-party managers); $2,000,000 for WBIM Sub-Advisory/WBIM Separate Accounts Fee-only: Flat fees or asset-based fees for non-discretionary advisory and consulting services, subject to negotiation.
Main office
See office150 North Riverside Plaza
Chicago IL 60606
Advisors at this office
63
Offices (63)
Chicago, IL
Chicago, IL
81 advisors
Chicago, IL North Riverside Plaza
150 North Riverside Plaza, Chicago, IL 60606
63 advisors
Baltimore, MD International Drive
100 International Drive Suite 19000, Baltimore, MD 21202
21 advisors
New York, NY Avenue of the Americas
1166 Avenue of the Americas Floor 20, New York, NY 10036-2774
11 advisors
Boston, MA
125 High Street Oliver Street Tower Suite 1901, Boston, MA 02110
9 advisors
Most active in
Alabama · Alaska · Arizona · Arkansas · California · Colorado · Connecticut · Delaware · District of Columbia · Florida · Georgia · Hawaii · Idaho · Illinois · Indiana · Iowa · Kansas · Kentucky · Louisiana · Maine · Maryland · Massachusetts · Michigan · Minnesota · Mississippi · Missouri · Montana · Nebraska · Nevada · New Hampshire · New Jersey · New Mexico · New York · North Carolina · North Dakota · Ohio · Oklahoma · Oregon · Pennsylvania · Puerto Rico · Rhode Island · South Carolina · South Dakota · Tennessee · Texas · Utah · Vermont · Virgin Islands · Virginia · Washington · West Virginia · Wisconsin · Wyoming
Also doing business as
William Blair · William Blair & Company · William Blair & Company L.L.C.
Disclosures
Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.
Business activities & affiliations
Is active or affiliated with:
Insurance agent
They sell insurance products and may earn commissions on those sales.
Broker-dealer / trader
They provide brokerage services and may earn transaction-based compensation in addition to advisory fees.
Fund sponsor
They manage or sponsor investment funds and may earn management or performance-based fees if clients invest in them.
Is not active or affiliated with:
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Bank
They're affiliated with a bank that may offer its own financial products and services.
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Trust company
They provide trust and estate administration services, typically for separate fees.
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Accountant / CPA / tax prep
They offer tax and accounting services, typically for separate fees.
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Lawyer
They provide legal services, typically billed separately.
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Real estate agent
They facilitate real estate transactions and may earn commissions.
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Other specialized services
They may provide services such as pension consulting or municipal advisory work, typically for separate fees.
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Advisors at this firm
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