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Mason Investment Advisory Services Inc

Updated today

Client assets under management

$6,966,981,302

Clients

1,063

71% high-net worth

Advisors

31

of 72 employees

Firm type

Multi Team

Clients per advisor

34

Low

Average account size

$6,554,075

About

Mason Investment Advisory Services, Inc. (MIAS) is an SEC-registered investment adviser that manages approximately $15.67 billion for about 1,063 clients through a team of 31 advisors. The firm provides fee-based financial planning, separately managed accounts, portfolio management for individuals (including high‑net‑worth clients), and institutional services such as outsourced chief investment officer (OCIO) engagements for nonprofit organizations, foundations, corporate entities and pension plans.

MIAS’s investment approach emphasizes strategic, long‑term asset allocation, rebalancing, and manager selection, implementing portfolios primarily with mutual funds, ETFs and third‑party managers under the oversight of an Investment Committee that conducts regular reviews. In addition to traditional portfolio management, the firm offers several portfolio support services — including a short‑term reserves cash management service, optional Flourish Cash sweep accounts, and aggregate custodial reporting that can be provided as a stand‑alone service — and in limited situations may invest directly in equities, fixed income or private/evergreen funds.

What distinguishes MIAS from many peers is the combination of multi‑billion dollar AUM with a relatively small advisory team and a $1 million account minimum, reflecting an emphasis on institutional‑style OCIO work and consolidated reporting alongside individual wealth management. The firm discloses affiliated business activities (an affiliated insurance agency and tax preparation services) that create potential commission and referral conflicts and has publicly reported SEC settlements related to Form 13F filing deficiencies and past mutual fund share‑class practices, noting remedial actions taken.

Client services

Financial planning Portfolio management Selection of other advisers

Expertise

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting

Fee options

Fixed

$5,000 to $15,000 for financial planning depending on complexity

Percentage

$0 - $999,999: 1.20% annually $1,000,000 - $2,999,999: 0.90% annually $3,000,000 - $4,999,999: 0.80% annually $5,000,000 - $9,999,999: 0.60% annually $10,000,000 - $24,999,999: 0.55% annually $25,000,000 - $49,999,999: 0.50% annually $50,000,000 - $99,999,999: 0.45% annually $100,000,000+: 0.40% annually

Other

Account minimum: $1,000,000

Main office location

Mason Investment Advisory Services Inc

11921 Freedom Drive, Suite 1000

Reston VA 20190, United States

Number of offices

1

Most active in

Alabama · Arizona · California · Colorado · Connecticut · Delaware · District of Columbia · Florida · Georgia · Idaho · Illinois · Indiana · Iowa · Kansas · Kentucky · Louisiana · Maryland · Massachusetts · Michigan · Minnesota · Missouri · Montana · Nevada · New Hampshire · New Jersey · New Mexico · New York · North Carolina · Ohio · Oregon · Pennsylvania · South Carolina · Tennessee · Texas · Utah · Vermont · Virginia · Washington · Wisconsin · Wyoming

Disclosures

Exclamation point means they have disclosures of this type. Check mark means no disclosures of this type were found.

Business activities & affiliations

Advisors at this firm

user avatar

David E

CFP®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

David Engler is a CFP® professional with 21 years of experience in financial advising. He has been with Mason Investment Advisory Services Inc since 2006. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, as well as charitable institutions and endowments. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process, managing approximately $13.2 billion in assets with a focused advisory team.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Sarah B

CFP®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Sarah Baker is a CFP® professional with 19 years of industry experience. She is currently with Mason Investment Advisory Services Inc, where she has worked since 2021. Her previous roles include positions at Sullivan, Bruyette, Speros & Blayney, LLC and Ronald Blue & Co. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, as well as charitable institutions. The firm employs a long-term strategic asset allocation approach with disciplined rebalancing and a manager-selection process, managing approximately $13.2 billion in assets with a team of 31 advisors.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Randon T

Series 66

Reston, VA

Mason Investment Advisory Services Inc

Randon Tagg is a financial advisor at Mason Investment Advisory Services Inc with six years of industry experience. He holds the Series 66 designation and has worked at Mason Securities, Inc. and Sallie Mae. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and rigorous manager selection, offering services such as separately managed accounts and outsourced chief investment officer solutions.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Sharon K

CFP®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Sharon Kampner is a CFP® with 19 years of industry experience and has been with Mason Investment Advisory Services Inc. since 2011. She holds Series 63 and Series 65 registrations and is based in Reston, VA. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, as well as charitable institutions, foundations, and endowments. The firm’s investment approach focuses on long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process utilizing mutual funds, ETFs, and third-party money managers.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Claudelle G

Series 66

Reston, VA

Mason Investment Advisory Services Inc

Claudelle Gehy is a financial advisor at Mason Investment Advisory Services Inc with nine years of industry experience. She holds the Series 66 designation and has been with Mason Investment Advisory Services since 2015. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm’s investment approach centers on long-term strategic asset allocation, disciplined rebalancing, and manager selection, offering services including separately managed accounts and outsourced chief investment officer solutions.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Derek L

CFA®, Series 66

Reston, VA

Mason Investment Advisory Services Inc

Derek Lesnak is a CFA® charterholder and holds a Series 66 license with three years of industry experience. He is currently with Mason Investment Advisory Services, Inc., where he has worked since 2023. His prior experience includes roles at Pathstone, Dyson Capital Advisors, and Cambridge Associates. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable organizations. The firm focuses on long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process, managing approximately $13.2 billion in assets with a relatively small advisory team.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

William C

Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

William Courson is a financial advisor with Mason Investment Advisory Services Inc, holding Series 63 and Series 65 licenses and bringing 36 years of industry experience. He has worked at Mason Investment Advisory Services since 2017 and previously at Hartland & Co from 2015 to 2017. Courson serves as a volunteer board member and investment committee member for the Concord University Foundation. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm focuses on long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process, offering separately managed accounts, outsourced chief investment officer services, and other portfolio management solutions.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

David O

CFP®, ChFC®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

David Odiorne III is a financial advisor with Mason Investment Advisory Services Inc in Reston, VA. He holds the CFP® and ChFC® designations, along with Series 63 and Series 65 licenses, and has 29 years of industry experience. Odiorne has been with Mason Investment Advisory Services since 1999. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm’s investment approach focuses on long-term strategic asset allocation, disciplined rebalancing, and manager selection, employing mutual funds, ETFs, and third-party money managers.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Devin J

CFP®, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Devin Johnson is a CFP® and holds a Series 65 license with one year of industry experience. He currently works at Mason Investment Advisory Services Inc and previously held roles at The Carlyle Group and KPMG. Mason Investment Advisory Services provides fee-based financial planning and investment management to a diverse client base, including individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm’s investment approach centers on long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Daniel C

CFP®, Series 66

Reston, VA

Mason Investment Advisory Services Inc

Daniel Corno is a CFP® and holds a Series 66 designation with three years of industry experience. He has been associated with Mason Associates, Inc. since 2011. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process, managing approximately $13.2 billion in assets with a relatively small advisory team.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Scott G

Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Scott George is a financial advisor with Mason Investment Advisory Services Inc in Reston, VA, holding Series 63 and Series 65 credentials and bringing 40 years of industry experience. He has worked with Mason Investment Advisory Services since 1998 and previously with Mason Securities, Inc. from 1988 to 2025. Mason Investment Advisory Services provides fee-based financial planning and investment management to a range of clients including individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm’s investment approach emphasizes long-term strategic asset allocation, disciplined rebalancing, and manager selection, utilizing mutual funds, ETFs, third-party money managers, and limited direct equity or fixed-income positions.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Blaine H

CFP®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Blaine Homan is a CFP® with six years of industry experience, currently serving at Mason Investment Advisory Services Inc. His prior roles include positions at Mason Securities, Inc., Centurion Wealth Management, and Domani Wealth LLC. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Matthew K

CFP®, Series 66

Reston, VA

Mason Investment Advisory Services Inc

Matthew Krause is a CFP® professional with eight years of industry experience. He is currently with Mason Investment Advisory Services Inc, where he has worked since 2021. His prior experience includes positions at Purshe Kaplan Sterling Investments, Altus Wealth Group, TIAA-CREF, and Mutual of Omaha. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and a rigorous manager-selection process.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Loizos K

Series 66

Reston, VA

Mason Investment Advisory Services Inc

Loizos Kapnisi is a financial advisor at Mason Investment Advisory Services Inc with 15 years of industry experience. He holds the Series 66 designation and has previously worked at TIAA and TIAA-CREF. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm’s investment approach focuses on long-term strategic asset allocation, disciplined rebalancing, and a manager-selection process using mutual funds, ETFs, and third-party money managers.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
user avatar

Barbara J

CFP®, Series 63, Series 65

Reston, VA

Mason Investment Advisory Services Inc

Barbara Joyce is a Certified Financial Planner (CFP®) with 10 years of industry experience. She is affiliated with Mason Investment Advisory Services Inc, where she has worked since 2000. Mason Investment Advisory Services provides fee-based financial planning and investment management to individuals, high-net-worth clients, corporations, pension and profit-sharing plans, and charitable institutions. The firm emphasizes long-term strategic asset allocation, disciplined rebalancing, and a manager-selection process that uses mutual funds, ETFs, and third-party money managers.

Charitable giving & philanthropy Equity compensation tax strategy Wealth management Active portfolio management Tax-loss harvesting
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