Excess Returns Podcast

Episode: "The Risk No One Defines | Cullen Roche on Building Your Perfect Portfolio"

Date: February 27, 2026
Host(s): Jack Forehand, Justin Carbonneau, Matt Zeigler
Guest: Cullen Roche (Author and ETF Strategist, Discipline Funds)

Episode Overview

This episode dives into Cullen Roche’s new book, "Your Perfect Portfolio," and explores foundational principles and practical strategies for constructing an investment portfolio that’s truly tailored to individual needs. The discussion spans definitions of risk, time horizon management, the role of human capital, critiques and merits of common portfolio types, and original strategies, all anchored by a real-world, actionable approach.

Key Discussion Points & Insights

1. Rethinking the Foundation of Investing

• Saver vs. Investor Mentality ([06:25])

  • Cullen emphasizes the importance of viewing oneself as a saver first, not just an investor, to avoid a gambling mindset and focus on process and planning.
  • “The process of allocating savings is a process that is much more methodical. It is process based and you need to have a plan…” – Cullen ([08:40])

• Defining Risk as Uncertainty of Lifetime Consumption ([09:30])

  • Cullen cites Ken French’s definition: risk is "the uncertainty of lifetime consumption," viewing risk in terms of how investment outcomes affect future spending and financial goals, not just market volatility.
  • “When you think about this, about the risk being the uncertainty of lifetime consumption, it’s sort of all encompassing.” – Cullen ([01:00, 09:30])

• Time as the Core Constraint ("Temporal Conundrum") ([12:33])

  • Time is the primary resource investors are managing; structuring portfolios to match consumption needs across varying horizons is critical.
  • “Time is the thing that we’re all trying to navigate, ultimately, it’s the thing that constrains all of our ability…” – Cullen ([12:33])

• Past Performance: Guide, Not Gospel ([14:36])

  • Historic returns offer perspective but can’t be relied upon for forecasting; diversification is key because “nobody really knows how all this stuff is ultimately going to play out.” – Cullen ([14:36])

• Human Capital as the Ultimate Asset ([16:59])

  • Youth and income potential act like a "synthetic bond allocation," allowing more risk tolerance in financial portfolios.
  • “Human capital is arguably the most important asset that any of us have.” – Cullen ([16:59])

2. Classic Portfolio Types: Pros, Cons, and Context

• 100% Stock Portfolio ([19:27])

  • Suitable for young investors with high human capital, or for isolated accounts with long time horizons (e.g., Roth IRA).
  • Risks must be matched to specific time buckets within a household’s finances.

• 60/40 Portfolio and Its Limitations ([21:48])

  • The blend is an effective, diversified "in-betweener," matching multiple time frames (stocks for long duration; bonds for medium).
  • 2022 exposed hidden risks in bonds during inflationary shocks; diversification by time horizon is as crucial as by asset class.
  • “The 40% bond piece is actually, it’s a relatively long time horizon for most people.” – Cullen ([23:22])

• The Need for International Diversification ([26:15])

  • Recent years have justified long-term allocation to non-US stocks. International has provided currency hedging and sequence risk reduction when US valuations soar.
  • “Valuations are expectations… when expectations are really high, you create an environment where the potential for underperformance is higher on average.” – Cullen ([26:15])

• Timing International Exposure ([29:14])

  • While market timing is difficult, reconsidering allocation in light of time horizons, valuations, and specific risks can be wise, especially for near-retirees loaded with US growth equities.

3. Beyond the Basics: Advanced Strategies and Innovations

• Factor Investing ([31:42])

  • Factors (e.g., value, momentum, quality) are best used as tools to align portfolios with specific time horizons and reduce sequence risk, rather than seeking alpha.
  • “I’ve come kind of come to love thinking about factors not in the sort of alpha generating sense necessarily, but in the sense of how are they going to perform across different time horizons.” – Cullen ([34:44])

• DIY and Original Portfolios

  • Forward Cap Portfolio ([37:48])

    • Projects trends like tech adoption forward to anticipate future market cap weights, “skating where the puck is going.”
    • Would mean being heavily overweight technology if you assume Marc Andreessen’s thesis that "technology is eating the world" proves out.
    • “If you had a really long time horizon, you’re trying to skate to where the puck is going, you actually way, way overweight technology inside of your portfolio.” – Cullen ([37:48])

  • Countercyclical Rebalancing Portfolio ([47:41])

    • Inspired by John Bogle, dynamically adjusts stock/bond mix counter to recent performance or current valuations to minimize behavioral errors.
    • “Are you somebody who is sensitive to volatility?… This portfolio is… a behavioral bias hedge.” – Cullen ([47:41])

  • Defined Duration Strategy & Discipline Funds ETFs ([54:54])

    • Applies asset-liability matching commonly used by institutions to retail portfolios via customized, time-weighted ETFs with 5, 10, or 20-year defined horizons.
    • “Asset liability matching just for me is so much more applicable to financial planning and the way that people can actually build a portfolio…” – Cullen ([55:32])

4. Real-World Constraints and Portfolio Trade-offs

• Inflation Protection ([41:29])

  • Multiple approaches: international equities as a dollar hedge, TIPS, commodities, gold (Permanent Portfolio), but each adds its own concentration risks.
  • “In the long run, probably the ultimate real, a real hedge against inflation [is gold].” – Cullen ([41:29])

• Risk Parity ([45:22])

  • Theoretically elegant, but very complex, potentially leading to over-diversification and lower absolute returns due to the cost and complexity of implementing 15+ non-correlated asset classes.
  • “You own so many things, you have so much non correlated return streams… you’ve almost dampened the returns inside the portfolio.” – Cullen ([45:22])

• Private Assets & Illiquidity Premium ([50:32])

  • Private equity and venture capital can add value if illiquidity is understood and tolerated, but they don’t fit well into daily-liquid products like ETFs.
  • “You’re trying to… jam a square peg into a round hole, and it just, it doesn’t work inside of that wrapper.” – Cullen ([50:32])

5. Memorable Quotes

• On behavioral pitfalls:
  “Some people get into the practice of investing thinking that this is some sort of get rich quick scheme… exactly what I’m trying to deter people from having the mentality of.” – Cullen ([08:00])

• On the limits of portfolio returns:
  “People are really critical of investment management fees. But man, the two biggies… are inflation and taxes. Inflation and taxes just, they slaughter you in the long run.” – Cullen ([01:00], [60:00])

• On personalization:
  “Everybody has to find something that works for them… not just buy into whatever somebody else is selling… may not actually be compatible with you and your financial life.” – Cullen ([04:00])

• On human capital:
  “The real investing you’re doing is in your own human capital. Because that’s the thing that’s going to drive your real wealth generation in the long run.” – Cullen ([60:00])

Notable Segments & Timestamps

• [07:00] — Saver vs. Investor distinction
• [09:30] — Defining Risk as Uncertainty of Lifetime Consumption (Ken French)
• [12:33] — Buffett quote and Temporal Conundrum
• [14:36] — Using (and not over-relying on) Past Performance
• [16:59] — Human Capital as a Bond-Like Asset
• [21:48] — Critique and context of the 60/40 Portfolio, dangers post-2022
• [26:15] — Argument for International Diversification
• [31:42] — Factor Investing: Is it for Everyone?
• [37:48] — The Forward Cap Portfolio explained
• [41:29] — Building in Inflation Protection
• [45:22] — Realities and complexities of Risk Parity
• [47:41] — Countercyclical Rebalancing to reduce behavioral mistakes
• [50:32] — Private Assets, Venture, ETF structural issues
• [54:54] — Asset-Liability Matching and Defined Duration ETFs
• [60:00] — The impact of taxes and inflation; why most real world returns are far lower than headline figures

Tone & Takeaways

The conversation is frank, pragmatic, and approachable, emphasizing individualization and actionable steps over financial theory or fads. Cullen makes complex topics accessible and always ties portfolio construction back to real-life circumstances, financial planning, and the psychological realities investors face.

Bottom Line:
Portfolio construction must be personal, grounded in realistic expectations, and tailored to life’s various time horizons. Understanding risk as it relates to future consumption, prioritizing human capital, and hedging both behavioral pitfalls and market unknowns are key. Strategies should be chosen—and modified—not just for returns but for compatibility with your goals, temperament, and future needs.