Mason Investment Advisory Services Inc logo

Mason Investment Advisory Services Inc

Updated today

Client AUM

$6,966,981,302

Clients

1,063

Advisors

32

across 3 offices

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

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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

See office

11921 Freedom Drive, Suite 1000

Reston VA 20190

Advisors at this office

27

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

Peter K

CFA®, Series 63

Malvern, PA

Mason Investment Advisory Services Inc

Peter Kokolus is a CFA® charterholder with 13 years of industry experience. He currently serves as a financial advisor at Mason Investment Advisory Services, Inc., where he has worked since 2026. Prior to joining Mason, he spent 22 years at The Vanguard Group, Inc. Mason Investment Advisory Services, Inc. is an SEC-registered investment adviser managing approximately $15.67 billion across about 1,063 clients. The firm offers fee-based financial planning, separately managed accounts, and institutional services including outsourced chief investment officer engagements, with an investment approach centered on strategic, long-term asset allocation and manager selection.

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® credentialed financial advisor with 20 years of industry experience. She has been with Mason Investment Advisory Services, Inc. since 2011 and previously worked at Polaris Equity Management, Inc. and Brownson, Rehmus & Foxworth, Inc. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for individuals and institutions through a team of 31 advisors. The firm focuses on strategic, long-term asset allocation and offers services including fee-based financial planning, separately managed accounts, and outsourced chief investment officer (OCIO) solutions.

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 Series 66-licensed financial advisor at Mason Investment Advisory Services Inc with 10 years of industry experience. She has been with Mason Investment Advisory Services since 2015. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for over 1,000 clients through a team of 31 advisors. The firm offers fee-based financial planning, portfolio management for individuals and institutions, and specializes in outsourced chief investment officer services with a focus on strategic asset allocation and manager selection.

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 in Reston, VA, holding Series 63 and Series 65 credentials and 37 years of industry experience. He has been with Mason Investment Advisory Services since 2017 and previously worked at Hartland & Co from 2015 to 2017. Outside of his advisory role, he is a co-owner of Kateli Trust, LLC, a real estate investment business, and serves as a volunteer board member and investment committee member for the Concord University Foundation. Mason Investment Advisory Services manages approximately $15.67 billion for over 1,000 clients through a team of 31 advisors, focusing on fee-based financial planning, separately managed accounts, and institutional services including outsourced chief investment officer engagements. The firm employs a strategic, long-term investment approach with an emphasis on asset allocation, rebalancing, and manager selection.

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

Sarah A

Series 65

Reston, VA

Mason Investment Advisory Services Inc

Sarah Avery is a financial advisor with Mason Investment Advisory Services Inc. She holds a Series 65 designation and has been with Mason since 2024. Prior to joining Mason, she spent several years in educational roles at James Madison University and Lake Braddock Secondary School. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for over 1,000 clients through a team of 31 advisors. The firm specializes in fee-based financial planning, separately managed accounts, and institutional services, with a focus on strategic, long-term asset allocation and portfolio management for high-net-worth individuals and nonprofit organizations.

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. He holds Series 63 and Series 65 licenses and has 41 years of industry experience, including 37 years with Mason Securities, Inc. and 28 years with Mason Investment Advisory Services. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for over 1,000 clients through a team of 31 advisors. The firm focuses on fee-based financial planning, separately managed accounts, and institutional services such as outsourced chief investment officer engagements, using a strategic, long-term investment approach centered on asset allocation, rebalancing, and manager selection.

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

Amy M

CFP®, CFA®

Reston, VA

Mason Investment Advisory Services Inc

Amy Mitchell is a CFP® and CFA® with nine years of industry experience. She currently works at Mason Investment Advisory Services, Inc. and previously held positions at Hemington Wealth Management, Keystone Asset Management, Altius Financial Advisors, and Mitchell Financial Services. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for individual and institutional clients through a team of 31 advisors. The firm focuses on strategic, long-term asset allocation and portfolio management, offering services that include separately managed accounts, financial planning, and outsourced chief investment officer engagements for nonprofit organizations and pension plans.

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® professional with seven years of industry experience, currently serving Mason Investment Advisory Services Inc. He has worked at several firms, including Mason Securities, Inc., Centurion Wealth Management, and Domani Wealth LLC. Mason Investment Advisory Services, Inc. manages approximately $15.67 billion for over 1,000 clients through a team of 31 advisors. The firm specializes in fee-based financial planning, separately managed accounts, and institutional services such as outsourced chief investment officer engagements, focusing on strategic, long-term asset allocation and manager selection.

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