Est. — Family Office Partners

Three partners.
One practice.

PS-AX is a partnership of specialists in family office stewardship — managing capital, governance and legacy with the discretion of a single household and the discipline of an institution.

The Monogram

PS·AX

Parish · Stewart · Abbott. The fourth letter is held in trust — a deliberate space for the colleague not yet made.

Private · By InvitationScroll

Ethos

A practice of quiet stewardship.

A family office is, in the end, a promise — to outlive market cycles, fashions and the people who make it. PS-AX exists to honor that promise for the families we serve and the generations that will follow.

We do not solicit. We do not publish performance. We do not appear in league tables. Our work is measured by the continuity of the families we serve and the integrity of the institutions we build around them.

3
Partners
Time horizon
1
Standard of care

The Partnership

Four letters. Three names.

Each principal brings deep expertise in the stewardship of family capital. The monogram itself is a record of who carries the work forward.

Portrait of Henry Parish, Partner at PS-AX
P

Partner

Henry Parish

A partner in the office.

Portrait of Daniel Stewart, Partner at PS-AX
S

Partner

Daniel Stewart

A partner in the office.

Portrait of Eleanor Abbott, Partner at PS-AX
A

Partner

Eleanor Abbott

A partner in the office.

X
X

A seat held in trust

Reserved

A future partnership we have not yet chosen to make.

The Practice

Four disciplines, one mandate.

Our work is integrated by design. Investment, governance, direct ownership and philanthropy are not departments — they are facets of the same multi-generational responsibility.

01

Capital Stewardship

Long-duration portfolio construction across public, private and real assets — measured in decades, not quarters.

02

Governance & Succession

Family constitutions, trustee architecture and the quiet machinery that lets a name pass cleanly to the next generation.

03

Direct Investment

Selective, conviction-led participation in private companies where the families we serve can contribute more than capital.

04

Philanthropy

Programmatic giving and foundation operations aligned with the values our principals have spent lifetimes earning.

X

The Fourth Letter

A seat held, deliberately, in trust.

We chose to name ourselves with a space already open. The X anticipates a future partner whose values, time horizon and conduct match our own — and whose addition will make the office more durable than three partners alone.

We are in no hurry. The right partnership is rarer than the right opportunity.

Contact

By introduction only.

PS-AX does not maintain a public client roster and does not accept unsolicited mandates. Correspondence from advisors, counsel and trusted intermediaries is welcome.

Correspondence

office@ps-ax.com

Press & Inquiries

inquiries@ps-ax.com

Office

The Partnership maintains private offices in New York · London · Zürich