Andrew A. Marchionni

Advisor at Main Street Research LLC — Lakeville, CT

Updated today

Credentials

CFP®, Series 66

Experience

8 years

Location

Lakeville, CT 06039

Main Street Research LLC logo

Main Street Research LLC

Team

Total advisors

19

Across 3 offices

Clients per advisor

54 Typical

Avg AUM per client

$2,574,741 Very High

HNW client ratio

80% Very High

About

Andrew Marchionni is a Financial Consultant currently with Fidelity Investments, a role he has held since 2022. He has previously served as a Private Client Advisor at Oppenheimer & Co. in 2022, Assistant Vice President - Financial Advisor at Bank of America Merrill Lynch from 2018 to 2022, and as a Financial Consultant at Equitable Advisors from 2017 to 2018.

In his professional approach, Andrew focuses on building long-term relationships with clients based on trust and transparency. He works closely with clients to understand their goals and vision for the future, co-creating and implementing tailored financial plans. He also monitors and adjusts these plans as clients’ lives change to ensure they meet evolving needs.

Client services

Based on Main Street Research LLC

Financial planning Portfolio management Educational seminars or workshops Consulting

Expertise

General retirement planning Wealth management

Occupation focus

Based on Main Street Research LLC

Founder/Business Owner Executive

Not sure if this advisor is right for you?

Answer a few questions to see advisors matched to you.

Fee options

Percentage

$0 - $2,000,000: 1.2500% (Traditional Fee Schedule) $2,000,000 - $5,000,000: 1.0000% (Traditional Fee Schedule) $5,000,000 - $10,000,000: 0.7500% (Traditional Fee Schedule) $10,000,000 - $20,000,000: 0.5000% (Traditional Fee Schedule) $20,000,000 - $40,000,000: 0.2500% (Traditional Fee Schedule) $40,000,000 - $60,000,000: 0.1500% (Traditional Fee Schedule) $60,000,000+: 0.1000% (Traditional Fee Schedule) $0 - $2,000,000: 0.7500% (Performance Fee Schedule) $2,000,000 - $5,000,000: 0.6250% (Performance Fee Schedule) $5,000,000 - $10,000,000: 0.5000% (Performance Fee Schedule) $10,000,000 - $20,000,000: 0.2500% (Performance Fee Schedule) $20,000,000 - $40,000,000: 0.1500% (Performance Fee Schedule) $40,000,000+: 0.1000% (Performance Fee Schedule)

Performance-based

Performance fee calculated quarterly based on net profits with rates from 5% (assets < $5M) down to 1% (assets > $60M), subject to a high water mark. Requires 'qualified client' status with at least $1,100,000 AUM or $2,200,000 net worth.

Other

Account minimum: $1,000,000 for Traditional Fee Schedule; $1,100,000 for Performance Fee Schedule (negotiable in limited circumstances)

Location

See office

Lakeville, CT

342 Main Street

Lakeville CT 06039

Advisors at this office

14

Most active in

California · Connecticut · New York

Work history

8 years of industry experience

Main Street Research LLC

2026 - Present • 1 year

Greenwich, CT

Fidelity Investments

2025 - 2026 • 1 year

Boston, MA

FIDELITY INVESTMENTS

2022 - 2026 • 4 years

Greenwich, CT

Oppenheimer & co.

2022 - 2022 • 1 year

Jericho, NY

BANK of AMERICA, N.A.

2018 - 2022 • 4 years

New York, NY

Merrill

2018 - 2022 • 4 years

New York, NY

AXA Advisors, LLC.

2017 - 2018 • 1 year

New York, NY

UnEmployed

2017 - 2017 • 1 year

Mahopac, NY

Three Boys of Italy

2014 - 2017 • 3 years

Mahopac, NY

University of Albany

2013 - 2017 • 4 years

Albany, NY

Disclosures

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

Business activities & affiliations

user avatar

Herbert M

Series 65, Series 63

Sharon, CT

Olive Tree Ridge Investment Advisors

Herbert Moore is the sole advisor at Olive Tree Ridge Investment Advisors in Sharon, CT, holding Series 65 and Series 63 designations with 15 years of industry experience. He previously worked at WiseBanyan, Inc. for 10 years and Independent Brokerage Solutions LLC for two years. Outside of his advisory role, he is the founder and active manager of Premier Construction, a residential remodeling business. Olive Tree Ridge Investment Advisors provides discretionary portfolio management primarily to high-net-worth individuals and charitable organizations, focusing on asset allocation and long-term strategies grounded in Modern Portfolio Theory. The firm specializes in mutual funds, equities, ETFs, and options trading, and requires clients to use Interactive Brokers while offering customized investment policy statements and regular account reviews.

Options & derivatives strategies Passive / index investing
user avatar

Anthony C

Series 63, Series 65

Salisbury, CT

EIA Investments LLC

Anthony Collins is a financial advisor with EIA Investments LLC in Salisbury, CT, holding Series 63 and Series 65 designations and 10 years of industry experience. He has held roles at multiple firms, including Union Square Capital Advisors LLC and Economic Index Associates LLC, where he serves as Executive Director. Collins also serves as a director and consultant for IRIS Metals, a junior lithium mining company. EIA Investments provides investment advisory and sub-advisory services to investors, registered investment advisers, and institutional and charitable clients. The firm employs a rules-based index management approach that uses proprietary IFED scores to weight securities and primarily manages assets on a non-discretionary basis.

Active portfolio management Factor investing / smart beta
user avatar

Edvard J

Series 65

Millbrook, NY

Seahorse Financial Advisers Inc.

Edvard Jorgensen is a financial advisor at Seahorse Financial Advisers Inc. with 29 years of industry experience. He holds a Series 65 credential and has maintained a law license in New York since 1977, though he does not currently practice law actively. Jorgensen has led Seahorse Financial Advisers since 1993 and serves as a trustee of three family trusts. Seahorse Financial Advisers provides discretionary management of separately managed brokerage accounts primarily for high-net-worth individuals, families, trusts, estates, and retirement plans. The firm employs a long-term, buy-and-hold investment strategy informed by fundamental analysis and market-timing considerations, managing approximately $86.7 million across about 20 client relationships.

Wealth management Passive / index investing Retirement plans for business owners (SEP, solo 401k)
user avatar

Nadav G

Series 63, Series 66

Lakeville, CT

Vizcaya Capital, LLC

Nadav Goshen is a financial advisor at Vizcaya Capital, LLC with 12 years of industry experience. He holds Series 63 and Series 66 licenses and has been with Vizcaya Capital since 2013. Outside of his advisory role, he is a part-owner of several investment-related holding companies affiliated with Vizcaya Capital. Vizcaya Capital primarily serves high-net-worth individuals, sophisticated investors, and institutional clients, offering discretionary and non-discretionary portfolio management as well as advisory services to pooled investment vehicles. The firm is notable for its involvement with private funds, pooled vehicles, and a substantial non-U.S. investor base.

Options & derivatives strategies Private / alternative investments Real estate investing
user avatar

Jacob S

Series 65

Lakeville, CT

Main Street Research LLC

Jacob Swartz is a financial advisor at Main Street Research LLC with a Series 65 designation and four years of industry experience. Prior to joining Main Street Research in 2021, he worked at Bloomberg LP for two years and attended Chapman University from 2015 to 2019. Main Street Research LLC is a multi-advisor investment firm managing approximately $2.38 billion for around 920 clients. The firm offers wealth management and consulting services to individuals, families, foundations, and institutions, employing a combination of fundamental, quantitative, and technical analysis to construct portfolios primarily of individual securities, with selective use of ETFs and ESG factor scoring for interested clients.

ESG / Sustainable investing Concentrated stock management Options & derivatives strategies Tax-loss harvesting Wealth management Founder/Business Owner Executive
user avatar

Henrique C

Series 65, Series 63

Lakeville, CT

Main Street Research LLC

Henrique Cataldi is a financial advisor at Main Street Research LLC with seven years of industry experience. He holds Series 65 and Series 63 licenses and has previously worked at firms including Charles Schwab, Edward Jones, and EQIS Capital Management. Main Street Research LLC provides wealth management services to individuals, families, foundations, and institutions, offering comprehensive financial planning and discretionary investment management through a team of 17 advisors. The firm employs a detailed investment policy process that incorporates fundamental, quantitative, and technical analysis, focusing on individual securities and offering ESG models and specialized sub-advisor strategies.

ESG / Sustainable investing Concentrated stock management Options & derivatives strategies Tax-loss harvesting Wealth management Founder/Business Owner Executive
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")