The quiet architecture
of enduring wealth.
For four generations, Monolith has guarded the fortunes of families who measure success in centuries, not quarters. Discretion is not a feature. It is the foundation.
Six disciplines. One fiduciary standard.
Every mandate is staffed by specialists in the relevant discipline, overseen by a single relationship partner accountable for the whole.
Trust & Estate Services
We structure dynasty trusts, GRATs, and charitable lead trusts across Delaware, South Dakota, and Liechtenstein jurisdictions. Our trust administrators handle distributions, tax filings, and beneficiary communications so families never deal with operational burden.
- Dynasty trust structuring
- Cross-border estate administration
- Beneficiary governance protocols
Family Stewardship
We draft family charters, build succession frameworks, and run next-generation education programs. Our stewardship team works directly with heirs aged 18–35 on financial literacy, governance participation, and values alignment.
- Family constitution drafting
- Succession planning
- Next-gen education programs
Cash Management
Treasury operations across USD, CHF, and SGD. We run laddered short-duration portfolios, sweep facilities, and FX hedging programs so client liquidity earns yield without compromising access.
- Short-duration laddering
- Multi-currency sweep
- FX hedging overlays
Strategic Lending
Pre-arranged secured credit lines backed by portfolio collateral. Clients access liquidity for acquisitions, real estate, or bridge needs without liquidating positions or triggering taxable events.
- Lombard lending facilities
- Pre-arranged liquidity lines
- Collateral optimization
Philanthropic Strategy
We set up and administer private foundations, donor-advised funds, and catalytic giving vehicles. Our team handles grant due diligence, impact reporting, and compliance so families focus on allocation decisions.
- Foundation setup & administration
- Grant due diligence
- Impact measurement reporting
Tax-Efficient Wealth Planning
Year-round tax strategy integrated with investment decisions. We handle loss harvesting timing, charitable remainder trust structures, and multi-jurisdictional planning across our 11 operating regions.
- Tax-loss harvesting
- Charitable remainder trusts
- Multi-jurisdictional planning
Six senior partners. One accountable relationship.
Every client family is assigned a relationship partner who coordinates the relevant specialists. The team below averages 22 years of experience.
Eleanor V. Whitfield, CFA
Managing Partner & Chief Executive Officer
Eleanor joined Monolith in 1998 after twelve years at Brown Brothers Harriman, where she ran the private banking desk for ultra-high-net-worth families across the Northeast corridor. She holds an MBA from Wharton and a BA in Economics from Williams College. Eleanor chairs the firm's Investment Committee and serves as sole trustee on two multigenerational family trusts with combined assets exceeding $2.1B. She is a CFA charterholder and sits on the Estate Planning Council of New York.
James A. Castellan, JD, LL.M.
Chief Investment Officer
James leads Monolith's asset allocation framework and oversees all public-market mandates. Before joining in 2004, he was a portfolio manager at Wellington Management responsible for global equity strategies totaling $4.6B in AUM. He holds a JD from Columbia Law School, an LL.M. in Taxation from NYU, and a BS in Finance from Georgetown. His research on tax-efficient withdrawal sequencing appeared in the Journal of Wealth Management (2019). James serves on the board of the CFA Society Boston.
Margaret R. Okafor, JD
Head of Trust & Estate Services
Margaret oversees trust structuring, estate administration, and cross-border transfer planning. She joined Monolith in 2010 from Withers Bergman, where she was a partner specializing in multinational family estate planning. Margaret earned her JD from Yale Law School and her BA from Stanford. She is admitted to the bar in New York, Connecticut, and England & Wales, and is a fellow of the American College of Trust and Estate Counsel (ACTEC). She administers trusts across Delaware, South Dakota, and Liechtenstein.
David T. Nakamura, CPA/PFS
Head of Tax-Efficient Wealth Planning
David runs year-round tax strategy across all client mandates, including loss harvesting timing, charitable remainder trust structures, and multi-jurisdictional planning. He spent nine years in PwC's Private Company Services practice before joining Monolith in 2013. David is a licensed CPA in California and New York, holds the AICPA Personal Financial Specialist designation, and earned his MS in Taxation from Golden Gate University and his BS in Accounting from USC.
Catherine L. Berghoff
Head of Family Stewardship
Catherine works with founding families on governance frameworks, succession charters, and next-generation education. She joined Monolith in 2015 after eight years at Cambridge Associates, where she advised family offices on spending policy and governance. Catherine holds an MBA from Stanford Graduate School of Business and a BA in History from Princeton. She is a certified Family Enterprise Advisor (FEA) through Family Enterprise Xchange and has drafted constitutions for families with assets ranging from $250M to $4B.
Robert S. Harris, CFA
Head of Strategic Lending & Cash Management
Robert structures credit facilities, liquidity lines, and treasury operations for client portfolios. He previously led the private credit desk at Northern Trust, managing $3.2B in secured lending facilities for family office clients. Robert joined Monolith in 2017 and holds an MBA from the University of Chicago Booth School of Business and a BSc in Economics from the London School of Economics. He is a CFA charterholder and oversees Lombard lending across USD, CHF, and SGD collateral pools.
A century of stewardship.
Monolith was founded on a single conviction: that enduring wealth is not built by chasing markets, but by refusing to be chased by them. Four generations of stewardship have affirmed what no cycle can refute — that time, not timing, is the only reliable ally of capital. We invest as our founders did in 1908: with the patience of a family that expects to own the same securities a century hence, and the discipline of a fiduciary who answers for every decision.
Our approach is structural, not speculative. We construct portfolios around durable enterprises — those whose advantages compound quietly across decades, whose balance sheets weather contractions without strain, and whose managers treat shareholder capital as borrowed rather than owned. We hold concentrated positions where conviction is earned through deep study, and we diversify only as prudence, not indecision, requires. Turnover is a cost we refuse to pay for the illusion of activity.
We measure performance in generations. A position held through three market cycles is not a commitment — it is a beginning. We favor private holdings and illiquid interests where value accrues beyond the noise of quarterly marks, and we keep liquidity reserves calibrated to a family's actual obligations, never to the sentiment of the moment. Volatility is not risk; the permanent loss of capital is.
Risk, in our reading, is the distance between an enterprise's intrinsic worth and the price a market offers it on any given day. We widen that distance in our favor by demanding a margin of safety before we commit a single franc, and by holding cash when no such margin exists. We do not hedge against uncertainty; we underwrite against it.
Above all, we invest as stewards, not traders. Every position carries a thesis written to outlive its author, and every family we serve is advised as if the decision were our own — because, in the long arc we keep, it is. The architecture of enduring wealth is quiet by design, and we have spent a century refining its proportions.
Perspectives from the long view.
Private credit is where the banks used to be.
Loans to mid-sized companies used to sit on a bank's balance sheet. Now they sit in funds, and that changes what your money is exposed to.
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The clients in their thirties want three things, and none of them is a stock tip.
They will inherit more than any generation before them and trust this industry less than any generation before them. The first meeting looks nothing like the one I had with their parents.
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The index is at a record. My phone is ringing anyway.
Ten companies make up close to forty per cent of the American market, and my clients are worried about the news instead.
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The forces shaping markets, and the ones that only look like forces.
Rates, deficits, the capital spending boom, tariffs and a market where ten companies are forty per cent of the index. What is structural, what is noise, and what a family should do about either.
Read the Essay →