Antoine Souma has spent more than two decades advising entrepreneurs, globally mobile families, and multigenerational wealth holders through some of the most consequential moments of their financial lives. His career reflects a disciplined commitment to trust, discretion, and long-term stewardship.
Today, as founder of Galliott Capital Advisors, Souma leads an independent boutique platform designed to function as a virtual or extended family office for sophisticated families across the United States, Europe, and the Middle East.
His work extends to succession planning, cross-border structuring, liquidity strategy, and the personal complexities that often accompany significant wealth. In this Q&A, Antoine Souma shares his perspective on how wealth management has evolved and the principles that continue to guide his work with families and entrepreneurs worldwide.
Q&A With Antoine Souma
Q
Can you tell us about your professional journey and what inspired you to establish or lead Galliott Capital Advisors?
A
Antoine Souma: I began my career in 2000 at UBS shortly after it acquired PaineWebber, joining a national training class of nearly 90 advisors. By year-end, only a small group remained, and those formative early years taught me how to build a practice through disciplined relationship-building and relentless outreach.
In 2020, I founded Galliott Capital Advisors with the vision of creating an independent, family-office-style firm capable of delivering greater flexibility, alignment, and intimacy than a large institution could provide.
Q
What experiences shaped your approach to serving sophisticated global clients and their families?
A
Antoine Souma: Working with entrepreneurial families taught me that trust is built over time, not through a single transaction. Many relationships began modestly and grew into long-term strategic partnerships through liquidity events, business transitions, and major family milestones.
Q
Over the years, how has your perspective on wealth management evolved?
A
Antoine Souma: Early in my career, wealth management centered on products and performance. Over time, I came to see true wealth stewardship as a broader discipline encompassing the full balance sheet, from operating businesses and real estate to succession and family governance.
Q
Galliott Capital Advisors describes its services as a virtual or extended family office. What does that mean in practice for your clients?
A
Antoine Souma: Many families already have accountants, attorneys, assistants, and bankers, but without centralized coordination. Our role as an extended family office is to bring structure to that complexity by integrating financial, legal, operational, and personal matters into a cohesive, proactive framework.
Q
What differentiates Galliott Capital Advisors from traditional wealth management firms or private banks?
A
Antoine Souma: Our independence is a defining advantage. As an open-architecture, custodian-agnostic firm, we design solutions around the client’s best interests and overall well-being rather than institutional constraints.
Q
Your firm emphasizes discretion, integrity, and personalized service. Why are these principles so important when working with high-net-worth families?
A
Families of significant means require absolute trust. Because our work often involves deeply personal matters, from succession and family dynamics to major liquidity events, discretion, integrity, and highly personalized service are essential.
Q
Many of your clients maintain primary residences abroad. How do you help international families navigate financial opportunities and challenges in the United States and beyond?
A
Antoine Souma: Our clients often operate across multiple jurisdictions, so we rely on a global network of legal, banking, real estate, and healthcare professionals to provide local insight and build trust through direct engagement.
Q
What are some of the most complex financial considerations that globally mobile families face today?
A
Antoine Souma: Cross-border tax exposure, residency rules, ownership structures, and trust coordination remain among the most complex issues, alongside next-generation education and global lifestyle logistics. Our role is to unify these moving parts into a coherent strategy.
Q
How do you approach multigenerational wealth planning to ensure both continuity and long-term growth?
A
Antoine Souma: We begin with clarity around ownership, governance, and decision-making authority. From there, we align investment strategy, legal structures, and liquidity planning with the family’s long-term values and governance framework.
Q
In your experience, what are the most common mistakes high-net-worth individuals make when managing or transferring wealth?
A
Antoine Souma: A common mistake is focusing too narrowly on investment returns while overlooking broader balance-sheet risks, including business concentration, guarantees, and real estate exposure. Another is treating estate planning as a static legal exercise instead of an evolving strategic process.
Q
How do you balance investment performance with long-term financial security and legacy planning?
A
Antoine Souma: Every investment decision must align with broader family objectives, including liquidity needs, business risk, and legacy priorities. In many cases, that means structuring the liquid portfolio more conservatively to offset risk elsewhere.
Q
What role does trust play in building long-term relationships with your clients?
A
Antoine Souma: Trust is foundational; without it, advisory relationships remain transactional. When it is established, clients turn to us during their most consequential life and business decisions, allowing for more thoughtful and coordinated guidance.
Q
What major trends are currently shaping the global wealth management landscape?
A
Antoine Souma: The industry is moving away from product-centric advisory models toward holistic family-office-style service, with independent open-architecture firms increasingly positioned as central strategic coordinators across institutions and jurisdictions.
Q
How do geopolitical shifts or global economic changes influence the strategies you recommend to your clients?
A
Antoine Souma: Geopolitical events influence capital flows, currency exposure, residency decisions, and asset structuring, so we rely on scenario-based planning to preserve flexibility and reduce cross-border concentration risk.
Q
How is the concept of the family office evolving in today’s financial environment?
A
Antoine Souma: The modern family office has evolved into a broader life-management platform encompassing financial planning, legal coordination, philanthropy, health logistics, education, and global lifestyle management.
Q
As a leader, how do you foster the culture of service and excellence that Galliott Capital Advisors is known for?
A
Antoine Souma: I lead by example through deep client engagement, while fostering a culture built on responsiveness, discretion, and long-term stewardship.
Q
What advice would you give entrepreneurs who are transitioning from building wealth to preserving and structuring it?
A
Begin earlier than you think; the transition from wealth creation to preservation requires the same strategic rigor that built the business, supported by advisors who understand both corporate and personal balance-sheet complexity.
Q
Looking ahead, what is your vision for the future of Galliott Capital Advisors and the clients you serve?
A
Antoine Souma: Our vision is to continue building a truly global boutique family office while preserving close client relationships, with our expansion into Bahrain reflecting that commitment across the Gulf and beyond.
Q
What motivates you most about the work you do with families and entrepreneurs?
A
Antoine Souma: The most rewarding aspect of this work is guiding families through transitions that extend far beyond finance while helping protect what they have built.
Q
When you reflect on your career so far, what accomplishments or moments stand out as most meaningful?
A
Antoine Souma: People often assume the most meaningful moments are when clients open up about something deeply private or ask for help with a sensitive family matter. Those moments are important, but for me, the most powerful experiences have actually been the reverse, times in my own life when I was the one in need of advice, support, or simply a shoulder to cry on. In those chapters, it was my clients who ran toward me, who showed up not as account holders, but as friends and family. Realizing that the relationships we built had become that mutual and that human is what I am most proud of in my career.
Follow Antoine’s Journey
About Antoine
Antoine Souma is the founder of Galliott Capital Advisors, an independent boutique wealth advisory and extended family office serving sophisticated global families, entrepreneurs, and multigenerational wealth holders. With more than two decades of experience across leading global financial institutions, he specializes in cross-border wealth strategy, succession planning, and long-term legacy stewardship.
Antoine Souma is the founder of Galliott Capital Advisors, an independent boutique wealth advisory and extended family office serving sophisticated global families, entrepreneurs, and multigenerational wealth holders. With more than two decades of experience across leading global financial institutions, he specializes in cross-border wealth strategy, succession planning, and long-term legacy stewardship.
