Market Street Trust Company

What Market Street Trust Company does

Market Street Trust Company is a privately held, client-owned shared family office headquartered in Portsmouth, New Hampshire, that provides comprehensive wealth management and fiduciary services to ultra-high-net-worth multigenerational families. Originally founded in 1909 as the single-family office for the Houghton family (founders of Corning Incorporated), the firm was converted into a shared family office in 1997, with each client family holding an ownership stake proportional to their assets under management. The company relocated its trust situs to New Hampshire in 2019 and operates as a New Hampshire chartered trust company, leveraging the state's favorable trust tax treatment and progressive trust statutes. It manages $2.5 billion in assets under management and serves approximately 40 family groups.

The firm's core product is an integrated shared family office service delivered through a team-based model with a single lead advisor per family, spanning financial planning, investment management, tax compliance and planning, fiduciary and trust services, risk and compliance management, philanthropic strategy, and family governance and education. It also offers standalone corporate trustee services — including white-labeled solutions — to single family offices, multi-family offices, RIAs, and wealth management firms. Underlying technology consists of a secure wealth management operations backend, the third-party Addepar client portal for reporting and account access, and a video-first remote work infrastructure supporting employees across 10 states.

The business model is fee-based and recurring, with revenue derived primarily from wealth management and advisory fees calculated on assets under management and scope of services. Pricing is fully customized and not publicly disclosed; engagements are annual and quote-based per client family. The company employs 40+ professionals distributed across 10 states, and as a 100% client-owned entity with no outside shareholders, fee revenue is reinvested into the organization rather than distributed. Go-to-market is relationship-driven, relying on industry reputation, referrals, thought leadership content, industry awards, and inbound inquiries rather than outbound sales.

Name

Market Street Trust Company

Legal name

Market Street Trust Company, Inc.

Website

https://marketstreettrust.com

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

11–50 employees

Short description

Market Street Trust Company is a client-owned shared family office headquartered in Portsmouth, New Hampshire, providing integrated wealth management, investment, tax, trust, and family governance services to approximately 40 ultra-high-net-worth multigenerational families managing $2.5 billion in assets.

Ownership category

akta.pro rank

Product category

Wealth Management / Shared Family Office Services

NAICS

Trust, Fiduciary, and Custody Activities (523991), Trusts, Estates, and Agency Accounts (525920), Trusts, Estates, and Agency Accounts (52592), Portfolio Management and Investment Advice (523940)

SIC

Investment Advice (6282)

akta.pro primary industry

Estate Planning, Trust Structuring & Governance (FSAAADAF)

akta.pro secondary industries

Trust Administration & Fiduciary Accounting Services (FSAAANAF), Personal Trust & Fiduciary Administration (FSAEAKAA), Family Office Investment Platforms & Direct Investing (PE/VC/Co-Invest) (FSAAADAH), Family Office Trust & Fiduciary Services (FSAEAKAF), Trust & Estate Tax Planning & Compliance (FSAEAKAE), Personal & Family Trust Services (FSAAANAA), Philanthropy, Foundations & Grantmaking Advisory (FSAAADAG)

Keywords

• Shared family office
• Wealth management services
• Trust administration services
• Fiduciary services
• Multigenerational wealth planning

Headquarters

HQ city

Portsmouth

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Others

Revenue model

1. Wealth Management and Advisory Fees: Market Street generates revenue through comprehensive wealth management and advisory services provided to ultra-high-net-worth families. As a client-owned shared family office, revenue is reinvested into the organization rather than distributed to external shareholders. The company manages $2.5 billion in assets under management.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Market Street Trust Company provides shared family office services for ultra-high-net-worth multigenerational families, delivering integrated wealth management through a single lead advisor backed by a team of investment, financial, tax, legal, and business specialists. The offering combines financial planning, investment management, tax compliance and planning, fiduciary and trust services, risk management, philanthropic strategy, and family governance and education, with corporate trustee services offered separately to other family offices and wealth management firms.

Product overview

Market Street Trust Company offers a unified shared family office platform combining comprehensive wealth management services. The core offering integrates Financial Planning and Strategy, Investment Management, Tax Compliance and Planning Services, Fiduciary and Trust Services, Risk and Compliance Management, Philanthropic Strategy and Administration, and Governance and Education. These services are delivered through a team-based approach with a single lead advisor serving as the primary point of contact, backed by a secure technology infrastructure. The company also provides dedicated Trustee Services as a standalone offering for partners seeking fiduciary services without full family office engagement.

Differentiator

Problem solved

Functional benefit

Products and services

• Shared Family Office Services A comprehensive family office service model providing integrated wealth management through a single lead advisor, combining the personalized attention of a single-family office with the resources of a multi-family office. Services include financial planning, investment management, tax compliance, fiduciary services, risk management, philanthropic strategy, and governance education for ultra-high-net-worth multigenerational families.
• Trustee Services Corporate trustee services offering permanence, objectivity, and security as a trustee for over 300 trusts. Provides fiduciary services including white-labeled solutions for single family offices, multi-family offices, RIAs, and wealth management firms, with operations based in New Hampshire's favorable trust environment.

Quantifiable outcome

• Nearly 10 generations of families served
• +2 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered minor and core.

• Single Family OfficesminorStrategic or Co-development PartnerMarket Street partners with single family offices to provide corporate trustee services, offering tailored solutions including white-labeled trustee services to best suit each partner's needs.
• Multi-Family OfficesminorStrategic or Co-development PartnerPartnership with multi-family offices to deliver tailored trustee services, leveraging Market Street's fiduciary expertise and New Hampshire trust jurisdiction advantages.
• Registered Investment Advisors (RIAs)minorStrategic or Co-development PartnerPartnership with RIAs and wealth management firms to provide trustee services, with customized solutions to complement their existing client service models.
• Wealth Management FirmsminorStrategic or Co-development PartnerPartnering with wealth management firms to deliver tailored trustee services and fiduciary solutions, including white-labeled offerings.
• New Hampshire Trust CouncilcoreStrategic or Co-development PartnerMarket Street is a member of the New Hampshire Trust Council and participates in its legislative committee. The Council works to improve the statutory, regulatory, and judicial landscape for trusts and trust companies in New Hampshire.

Scale indicators6 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Laird Norton Wealth Management: Multi-family office with a multi-generational client base and integrated wealth, investment, and trust services. Comparable structure and philosophy of serving UHNW families with a long-horizon, holistic approach.
• Bessemer Trust: One of the largest privately-held multifamily offices in the U.S., serving ultra-high-net-worth families with integrated wealth management, investment, and trust services. Directly comparable in business model, target clientele, and service breadth to Market Street.
• Glenmede: Independent, privately-owned wealth management firm offering investment, trust, and family office services to UHNW families and foundations. Comparable in its multigenerational client focus and integrated advisor-led service model.
• Brown Brothers Harriman Trust Company: Long-standing private partnership offering trust administration, fiduciary, and wealth management services to UHNW families. Comparable in trust services focus and multigenerational client relationships.

Broad incumbents

• Abbot Downing (Wells Fargo): Multi-family office brand within Wells Fargo providing wealth planning, investment management, and trust services to UHNW families. Overlaps in target clientele and integrated service offering.
• Rockefeller Capital Management: Wealth management and private investment platform serving UHNW families through family office-style services. Comparable in target market and integrated service offering, though backed by a larger institutional sponsor.
• BNY Mellon Wealth Management: Large wealth management franchise with significant family office and trust administration capabilities for UHNW clients. Comparable in trust and fiduciary service offerings but operates as part of a global financial institution.
• Wilmington Trust (M&T Bank): Major trust and wealth services franchise within M&T Bank, offering corporate trustee, investment, and family office capabilities. Broader incumbent with comparable trust services and UHNW clientele.
• Northern Trust Wealth Management: Large publicly-traded wealth manager with deep family office, private banking, and trust capabilities. Overlaps significantly in UHNW trust and family office services but as part of a much broader asset servicing business.

Emerging players

• Pathstone: Multi-family office serving UHNW families with integrated investment, trust, and family office services. Comparable in service scope, though more recently scaled via roll-up acquisitions across multiple regional MFOs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/market-street-trust-company

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Market Street Trust Company