How I Invest
How I Invest

E316: How Family Offices Design Portfolios for 30-Year Outcomes

What if the easiest alpha in public markets isn’t stock picking… but taxes? In this episode, I sit down with Zach Wainwright, Founder of Twin Oak ETF Company, to break down structural alpha, ETF tax efficiency, and how high-net-worth investors can compound capital more intelligently. Zach shares les

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David Weisburd Host

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Episode Summary

Executive Summary: The conversation explores how long time horizons, incentive alignment, and tax efficiency can create durable investing advantages. Drawing on experience at Wellington, TIFF, and a family office, the guest argues that family offices can exploit structural edges through contrarian, balance-sheet-driven investing and now build ETF-based solutions that deliver private-markets-like outcomes in public markets, especially around hedging and tax-aware compounding.

Main Topics: Long-term investing as an owner mindset (Priority: 5/5): The guest distinguishes between being an investor and an asset owner, emphasizing that true long-term thinking means deploying capital for multi-generational compounding rather than quarter-to-quarter performance. Lessons from Wellington: finding a repeatable edge (Priority: 4/5): At Wellington, exposure to multiple styles taught the importance of understanding one’s own edge; the guest identified as a value investor focused on high-quality businesses with price/value divergence. TIFF and the logic of backing emerging managers (Priority: 5/5): Investing in fund one through fund three requires rigorous diligence but can capture the best-performing years of a manager’s career and align incentives through carry and survival pressure. Family offices as structurally advantaged allocators (Priority: 5/5): Family offices can tolerate illiquidity, drawdowns, and non-bucketed opportunities because they invest from a balance sheet, enabling contrarian trades and unique return streams. Twin Oak’s framework: structural alpha and tax alpha (Priority: 5/5): The firm is built around three value-creation levers—security selection, asset allocation, and structural alpha—with tax-aware implementation highlighted as the easiest way to add value over time. ETF-based tail hedging and portfolio resilience (Priority: 5/5): The guest describes creating ETF solutions to make institutional-style tail hedging accessible, with dynamic hedges designed to protect against severe drawdowns while preserving the ability to redeploy capital quickly. The future of tax-aware investing (Priority: 4/5): The discussion closes on the view that tax efficiency is an underappreciated, durable source of alpha and will likely expand as more wealth shifts to taxable investors and advisor-led platforms.

Key Arguments: Long-term investing matters most when the horizon is measured in decades or generations, not quarters, because compounding benefits from minimizing friction and maximizing time in the market. Great investors must identify a repeatable edge; at Wellington, the guest learned that his edge was value-oriented investing in high-quality businesses where price and value diverge. Early-stage fund managers can be attractive because their incentives are highly aligned: they need strong investment outcomes to survive, and they often invest significant personal capital alongside LPs. There is no perfect investment; every manager or strategy has flaws, so the job of an allocator is to assess risk-reward trade-offs rather than search for perfection. Family offices can create structural advantages by avoiding rigid portfolio buckets and by taking contrarian positions where they have balance-sheet flexibility and lower fundraising pressure. Tax alpha can be as important as investment alpha because mutual funds can create tax drag that erodes gains, while ETF structures can preserve more after-tax compounding. Tail hedging should be designed around real investor pain points—large, sudden drawdowns—not minor pullbacks, and solutions must allow immediate redeployment after a crisis. ETF wrappers can democratize sophisticated institutional strategies, making hedging and tax-efficient compounding accessible to family offices and other taxable investors. The future of asset management may shift toward client-driven product design, especially for taxable investors seeking long-term compounding rather than headline gross returns.

Data Points: Long-term lockup: 15-year lockup - Used to illustrate the true long-term mindset required when investing in early-stage managers at TIFF. Best-performing manager years: Fund 1 to Fund 3 - The guest said these are typically a manager’s best-performing funds, which is why investing early can be valuable. Family office asset pool: Roughly $9 billion - Referenced as the scale of TIFF in the conversation before moving to the single-family office discussion. GP commitment example: 20% of capital - Illustrative example of strong manager alignment when a GP invests heavily alongside LPs. Put hedge cost: 2% to 5% per year - Cost of buying SP 500 puts as a direct tail hedge, depending on the period. Mutual fund tax drag: About 2% per year - Average annual tax drag cited for mutual funds due to capital gains distributions and turnover. ETF tax advantage: 2 points of tax alpha - Example comparing the same top manager held through an ETF versus a mutual fund. Market outperformance from avoiding worst days: 3x performance over 30 years - Statistic cited to show how avoiding the worst days can dramatically improve outcomes, though missing the best days is the trade-off. Tax deferral vs elimination: Deferral, not elimination - Clarified that the goal is to defer taxes and compound longer, not avoid taxes altogether. ETF evolution stage: Third inning - Guest’s view that ETF innovation and adoption are still early despite its maturity as a wrapper.

Pivotal Quotes: "Are you an asset owner or just an investor?" — Guest: Defines the core mindset difference behind long-term compounding and owner-like capital allocation. "Tax alpha is the easiest way to add alpha for clients." — Guest: Explains why tax-aware implementation can create meaningful value even without changing underlying investment skill. "This is tax deferral. It's not tax elimination." — Guest: Clarifies the objective of tax-aware investing as reducing friction and extending compounding time.

Implications: Investors should think beyond gross returns and focus on horizon, taxes, and structure. The transcript suggests future alpha will increasingly come from ETF-based, tax-aware, client-specific solutions rather than pure security selection alone.

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About How I Invest

How I Invest with David Weisburd is a podcast that interviews the world's leading institutional investors. Previous guests include The Ford Foundation, Northwestern University Endowment, CalPERS, Stepstone, and other top limited partners.

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