Stamford, CT Landmark Square Office

Team
Updated today
William Blair & Company L.L.C. logo

William Blair & Company L.L.C.

Enterprise

Firm-wide stats for William Blair & Company L.L.C.

Total advisors

329

Across 62 offices

Clients per advisor

107 High

Avg AUM per client

$1,492,448 Very High

HNW client ratio

26% High

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.

Based on William Blair & Company L.L.C.

Expertise

Private / alternative investments Wealth management Active portfolio management ESG / Sustainable investing Retirement plans for business owners (SEP, solo 401k)

Based on William Blair & Company L.L.C.

Occupation focus

Founder/Business Owner Executive

Based on William Blair & Company L.L.C.

Location

6 Landmark Square, Landmark Square Center

Stamford CT 06901-2792

Advisors at this office

3

Advisors at this office

user avatar

Gianni D

CFP®, Series 63

Stamford, CT

William Blair

Gianni Dimeglio is a CFP® credentialed financial advisor with 19 years of industry experience. He is currently with William Blair, where he has worked since 2021. Prior to this, he spent nine years at TD Bank, N.A. and TD Private Client Wealth LLC. William Blair’s Private Wealth Management division offers discretionary and non-discretionary investment management, financial planning, and wealth services to individuals, foundations, pension, and corporate clients. The firm employs an active, research-driven approach across multiple asset classes and provides access to proprietary models, third-party sub-managers, and private investment opportunities.

Private / alternative investments Wealth management Active portfolio management ESG / Sustainable investing Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Executive
user avatar

Alexander L

CFA®, Series 63, Series 66

Stamford, CT

William Blair

Alexander Lane is a CFA® charterholder with 29 years of experience in the financial services industry. He has worked at William Blair since 2021 and previously held roles at TD Bank and TD Private Client Wealth. Outside of his advisory work, Lane serves as a snowboard instructor at Windham Mountain Snow Sports School during winter weekends and breaks. William Blair’s Private Wealth Management division offers investment management, financial planning, and wealth services to high-net-worth individuals, foundations, pension, and corporate clients. The firm employs an active, research-driven approach across multiple asset classes and provides proprietary model portfolios and access to private funds through its MB Investments Program.

Private / alternative investments Wealth management Active portfolio management ESG / Sustainable investing Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Executive
user avatar

Katrina S

Series 66

Stamford, CT

William Blair

Katrina Stanton is a financial advisor at William Blair with 10 years of industry experience. She holds a Series 66 designation and has worked at William Blair since 2021. Prior to that, she was with TD Private Client Wealth LLC and TD Bank N.A. from 2016 to 2021. William Blair’s Private Wealth Management division offers discretionary and non-discretionary investment management, financial planning, and wealth services to individuals, foundations, pension, and corporate clients. The firm utilizes an active, research-driven approach across equities, fixed income, and alternative strategies, providing proprietary models and access to private funds and co-investment opportunities.

Private / alternative investments Wealth management Active portfolio management ESG / Sustainable investing Retirement plans for business owners (SEP, solo 401k) Founder/Business Owner Executive
View complete list of advisors at this office
Warmer team member

Not sure where to start?

We'll help you think it through—whether you ultimately need an advisor or not. Warmer helps you compare advisors clearly, so you can choose with confidence.

Find your advisor

For advisor listings, we rely on sources including public filings and data provided by advisors, and we cannot guarantee that all information is current or accurate. Advisors are independent and may not have reviewed or updated this information. Please review an advisor's Form ADV and do your own diligence before deciding whether to work with them.

Advisor matching and referrals are provided by FinanceHQ LLC ("FHQ"), a wholly-owned subsidiary of Warmer and an SEC-registered investment adviser. We may be compensated by participating advisors. You pay no fee to use our matching service, and advisor fees are not increased because of a referral. We do not supervise advisors, manage or hold assets, guarantee performance, or provide advice about specific investments.

By using our service, you agree to the Warmer Terms of Service and FHQ Advisory Agreement, and acknowledge Warmer's Privacy Policy. Please review FHQ's ADV Part 2A and Form CRS. Logos provided by Logo.dev

© 2026 Warmer Holdings Inc. ("Warmer")