Podcast Summary: How I Invest with David Weisburd

Episode E316: How Family Offices Design Portfolios for 30-Year Outcomes
Date: March 3, 2026
Guest: Zach (former Wellington, TIFF, Single Family Office investor; current founder of Twin Oak)

Overview

In this episode, David Weisburd interviews Zach, an experienced investor who has worked across top-tier institutional asset managers, endowments, and a major single family office. The conversation centers on how ultra-high-net-worth family offices design portfolios for generational, 30-year+ outcomes, how their approach differs from other investors, and the importance of a long-term mindset, structural advantages, and the enormous (and often overlooked) impact of tax efficiency in compounding capital over decades.

Zach shares hard-won lessons from Wellington and TIFF, the value of backing emerging managers, key differences between family offices and traditional allocators, practical insight into portfolio hedging, and the frontier of ETF innovation for sophisticated, tax-aware investors.

Key Discussion Points & Insights

1. The True Meaning of Long-Term Investing (00:00–01:18)

• Long-term orientation is foundational:
  Zach stresses how the meaning of "long-term" matures as one transitions from a young investor to managing money for future generations (00:13).

  • Quote: “Making an investment for a quarter or four quarters...means something very different when you're investing for the next generation.” — Zach (00:39)

• Asset owner vs. investor mindset:
  Being an “asset owner” is about letting capital compound to serve not just oneself but the next generation.

2. Institutional Lessons: Wellington & TIFF (01:15–06:14)

• Finding your edge (Wellington):
  Exposure to many styles helped Zach realize he should invest with strategies that genuinely resonate:

  • Quote: “You have to figure out what's true to yourself...what is it that you believe that you can kind of have a repeatable, sustainable competitive edge on.” — Zach (01:29)

• TIFF: True long-term commitment:
  Investing in early-stage managers with lockups up to 15 years brings rigorous due diligence and a new gravity to risk-taking (02:05).

  • Quote: “When you're forced to make a commitment...that's really being long term.” — Zach (02:08)

• Backing emerging managers:
  Fund I–III often outperform; missing early funds often means missing future access too (02:33). Early managers are more aligned (“eat what they kill”) and “if fund one doesn't go well, there is not a fund two” (03:45).

• Risk and Alpha:
  Alpha is created upstream — via doing hard, unglamorous work that large, complacent incumbents may avoid (03:16).

3. Diligence & Alignment in Manager Selection (04:52–05:57)

• Ethics matter:
  The “cardinal sin” is backing managers with questionable character, especially given long lock-up horizons.
  • Quote: “The biggest cardinal thing you can make a mistake in is investors partnering with people who are not good people.” — Zach (05:01)
• Skin in the game:
  Strong alignment is when managers are significant GP investors in their own fund.

4. Structural Edges at Family Offices (07:40–10:25)

• Two main archetypes:
  (1) Steady, low-risk compounding and (2) Higher-risk, opportunistic investing — both rooted in not having existential constraints like layoffs (07:40).

• No buckets, just balance sheet:
  Unlike rigid institutional allocations, family offices can invest wherever opportunities arise, especially in less trafficked, “uncategorizable” niches (08:52).

  • Quote: “Family offices, they don't have buckets. They have a balance sheet.” — Zach (08:54)

• Contrarianism and incentive alignment:
  Family offices can be liquidity providers or contrarians because they don’t follow fads or raise external capital (09:22).

• Incremental return levers:
  “Take the other side” of consensus flows, buy/sell volatility, and continually seek new return streams (10:06).

5. Portfolio Construction & Tax Alpha (10:30–13:36)

• Zach's framework at Twin Oak:
  (1) Security selection, (2) Asset allocation, (3) Structural alpha (“time horizon” and “tax-aware” investing are the big edges) (10:30).

• Case study in tax alpha:
  Even a top 1% manager’s skill can be wiped out by mutual fund tax drag (about 2%/year). ETFs preserve after-tax returns for long-term compounding (11:24–12:33).

  • Quote: “You would have generated two points of tax alpha in the ETF structure relative to a mutual fund.” — Zach (12:16)

• ETF Mechanics:
  Mutual funds pass through phantom gains; ETFs’ in-kind redemptions generally avoid this (12:40).

6. Building Scalable, Hedge-Enabled Portfolios (15:33–20:34)

• Tail risk in portfolios:
  Families fear “black swan” losses and tail hedging is sought after — but buying plain S&P puts is too expensive (15:33, 17:56).

• ETFs for hedging:
  Twin Oak offers an ETF that systematizes tail risk hedging across 40+ strategies, making it accessible, cost-effective, and liquid for rapid portfolio rebalancing post-drawdown (16:55, 18:57, 20:20).

  • Quote: “We try and deliver an outcome, a solution where you get equity like returns, but with reduced drawdowns in extreme tail environments.” — Zach (20:20)

• Rebalancing advantage:
  Hedge funds often can’t immediately reinvest after payouts due to typical lock-ups—ETFs enable immediate action to capture market recovery (21:01).

7. Optimal Public Portfolio Design for Long-Term Families (22:57–24:10)

• S&P 500 as a case study:
  A (frictionless) 30-year S&P 500 holding compounds 25x, but taxes, fees, and suboptimal behavior usually erode this (23:15).
• Private markets mindset for public markets:
  Seek to maximize tax-deferral, reduce frictions, and align incentives for maximum compounding (23:56).

8. The Underappreciated ETF Evolution (24:16–26:36)

• Adoption is only beginning:
  Many sophisticated investors don’t realize ETFS’ tax advantages or the breadth of their application (24:16–25:19).

  • Quote: “People ask me what inning we are in the ETF evolution. And I say like the third inning. There is so much more to do...” — Zach (24:18)

• Shifts in allocator incentives:
  More fee-only, client-aligned managers (RIAs, MFOs) are driving focus on after-tax, long-term performance (25:19).

• Tax code = persistent edge:
  “A superior knowledge of the tax code is one of the most competitive edges you can have as an investor.” — Zach (26:45)

9. Sustainable Alpha in a Low-Alpha World (27:35–28:28)

• True alpha is fleeting; tax alpha and deferral — selling against slow-moving government policies rather than hyper-efficient markets — is a more persistent path (27:35).
• “...tax deferral, it's not tax elimination. We're not getting rid of your tax obligation... But can we remove the frictions along the way?” — Zach (28:07)

10. Lessons for Young Investors + The Nature of Differentiated Strategies (28:28–30:15)

• Collect diverse experiences:
  “When you see the same problem everyone else has seen, you'll see a different answer.” (28:42)
• Alpha is found in difference:
  Many dismiss new approaches if they don’t match prior patterns—not realizing “difference is the source of alpha” (29:21).
• Early adoption advantage:
  What’s new and different now will become mainstream (and commoditized) later (29:42).

Notable Quotes & Timestamps

• On true long-term investing:
  “Making an investment for a quarter or four quarters...means something very different when you're investing for the next generation.” — Zach (00:39)

• On finding your edge:
  “You have to figure out what's true to yourself...what is it that you believe that you can kind of have a repeatable, sustainable competitive edge on.” — Zach (01:29)

• On early-stage managers:
  “If a fund one doesn't go well, there is not a fund two.” — Zach (03:45)

• On family office structural edge:
  “Family offices, they don't have buckets. They have a balance sheet.” — Zach (08:54)

• On tax alpha:
  “You would have generated two points of tax alpha in the ETF structure relative to a mutual fund.” — Zach (12:16)

• On compounding for families:
  “A (frictionless) 30-year S&P 500 holding compounds 25x, but taxes, fees, and suboptimal behavior erode this.” — Zach (23:15)

• On ETF innovation:
  “People ask me what inning we are in the ETF evolution. And I say like the third inning. There is so much more to do...” — Zach (24:18)

• On tax knowledge as edge:
  “A superior knowledge of the tax code is one of the most competitive edges you can have as an investor.” — Zach (26:45)

• On diverse experiences:
  “Collect the most diverse set of experiences you can as an investor, because when you see the same problem everyone else has seen, you'll see a different answer.” — Zach (28:42)

Key Segment Timestamps

• [00:00–01:18] – Long-term investment mindset & compounding for future generations
• [01:18–03:45] – Wellington, TIFF, and the edge of early-stage manager investing
• [04:52–05:57] – Due diligence, alignment, and avoiding character risks in managers
• [07:40–10:25] – Family offices’ unique position and structural advantages
• [10:30–13:36] – Tax alpha and robust portfolio design at Twin Oak
• [15:33–21:01] – Portfolio tail hedging, ETF solutions, and the need for liquidity in crisis
• [22:57–24:10] – Designing optimal public portfolios for generational compounding
• [24:16–26:36] – The coming ETF revolution and aligning incentives for tax-aware investing
• [27:35–28:28] – The sustainability of alpha & tax efficiency as edge
• [28:42–30:15] – Lessons for young investors and the challenge (and opportunity) of “different” strategies

Memorable Moments

• Zach’s analogy of avoiding only the “10 worst days” and missing out on the “10 best” that follow (21:01):

  • Illustrates the traps in conventional hedging and the importance of rebalancing and capturing recoveries.

• The “third inning” of ETF adoption (24:16):

  • Reflects both awareness and innovation gaps even among sophisticated allocators.

• The practical advice for young investors on gathering diverse experiences (28:42):

  • “When you see the same problem everyone else has seen, you'll see a different answer.”

Takeaways

• Family offices, unbound by institutional constraints, can leverage greater risk tolerance, flexible structures, and a focus on long-term (even generational) compounding.
• True investment edge is often structural (time horizon, tax code mastery) rather than merely picking winners.
• ETFs offer under-appreciated after-tax benefits—an important but under-exploited avenue for generational wealth compounding.
• Tail risk hedging should be both sophisticated and accessible; ETFs can provide solutions that merge institutional sophistication with flexibility for rapid reinvestment.
• In a world of fleeting alpha, improving alignment, minimizing unnecessary frictions, and maintaining diverse perspectives is the sustainable path to outperformance over decades.