SOFI · Single Family Offices for Impact
Some conversations only happen between families.
SOFI is a trusted circle of single family offices that invest with purpose. Members bring their experience, explain the deals they are working on and share their diligence and judgement, so that every family makes better, smarter investment decisions.
Co-conceived by the Buyck Family Advisory Office
Our view
Four principles.

Governance keeps impact alive.
Impact is purpose met with dedication. It lasts when it is written down and defines how a family decides.

Depth before breadth.
Start where the family already brings value. Go deep before going wide.

The next generation decides too.
Access, vision and the capacity to navigate what comes. Backed by the family’s networks and hard-won experience, they hold the winning hand.

Trust before transactions.
Relationships matter as much as returns. Trust is built long before the first deal.
Our story
It began in Frankfurt.
June 2024, at the Global Asset Owner Meeting. A few families found they were asking the same questions. They have met ever since.



With our thanks to Antje Biber, whose initiative opened the door.
Where the circle has met
Online since 2024. In person in four cities.
- 4Cities, in person
- 9Sessions
- 35+Families represented
2024
- June · Frankfurt
Where it began
The first Global Asset Owner Meeting.
- Nº 114 June · Online
The first call
The families agree to keep meeting.
- Nº 2September · Online
Side by side
Missions, frameworks and portfolios, shared.
2025
- Nº 3January · Online
Biodiversity
23 families from 15 countries.
- Nº 4April · Paris
The Grand Palais
About 30 family offices in one room, at ChangeNOW.
- Nº 5June · Online
Values
Investment priorities, aligned with what families stand for.
- Nº 6September · Frankfurt
Together again
The second Global Asset Owner Meeting.
2026
- Nº 7January · Davos
Nature Lunch
During the World Economic Forum week.
- Nº 86 May · Luxembourg
LP Summit
The first Luxembourg LP Summit.
- Nº 9Next · 24 November · Online
Two next-generation leaders
One Belgian, one Italian, each from an entrepreneurial family.
Ask for a seat →
What SOFI brings
Shared judgement, for better decisions.
Strategy
How other families make their strategy meet their impact goals, and why it holds.
How we look at impact
Impact needs scale, and scale needs wide application: that is basic economics. It takes regenerative capital to build tomorrow’s resilience within planetary boundaries.
How we measure it
The metrics families actually track, and the ones they dropped.
How we review deals
Members explain the deals they are working on, and the room asks the hard questions.
What we avoid
The structures, terms and patterns that have cost families before.
Diligence, shared
What each family learned in diligence, so no one starts from zero.

“Not necessarily to co-invest.
To decide better, together.”SOFI is a trusted network for better, smarter investment decisions. A clearer view of each family’s co-investment capacity follows from it.
David BuyckManaging Partner, Buyck Family Advisory Office
Ask to be considered
A seat, by introduction.
Tell the secretariat who you are and who introduced you. We reply personally, in confidence.
The secretariat
info [at] advisoryoffice [dot] eu
In your note
- Your name and your family office
- Who introduced you
- A seat on 24 November, or to join the circle
- What your family would bring to the circle
For single family offices investing their own family’s capital. We use your details to answer your request, and for nothing else.
Nothing on this page is an offer, a solicitation or investment advice. Each family takes its own decisions.
