Podcast Summary: "How Endowments Actually Think About Risk"

Podcast: How I Invest with David Weisburd
Host: David Weisburd
Guest: Roger (former Cornell Endowment, now Summation Capital)
Episode: E314
Date: February 27, 2026

Episode Overview

In this masterclass episode, David Weisburd interviews Roger, the former head of the Cornell endowment and current founder of Summation Capital, about how top endowments assess, manage, and construct risk within their portfolios—particularly in private equity. The conversation dives into portfolio construction, manager selection, co-investments, fee and incentive alignment, and uniquely endowment-style investment philosophies. Roger shares lessons from managing billions and developing one of the country’s most sophisticated investment platforms.

Key Discussion Points & Insights

1. Lessons from Leading an Endowment

• Portfolio Construction is Underappreciated

  • Roger credits the value of focusing on "how you construct the portfolio that your asset classes are made of" (00:17) as being instrumental in generating strong returns, and laments that many investors overlook this.
  • “There's just a lot of value that investors can get by focusing on how they construct the portfolio...” — Roger [B], (00:17)

• Diversification Without Sacrificing Returns

  • A key misconception is believing high returns require high concentration and risk. Roger counters, arguing endowment-style diversification can maximize returns while managing risk, especially when combining different private equity styles (VC, growth, buyouts) (01:21–02:26).

  • Notable Quote: “The most common misnomer is that you either have to sacrifice returns to get diversification... I tend to find that most investors feel like there’s a trade-off there.” — Roger [B], (01:46)

2. Fees, Alpha, and Public vs. Private Markets

• Private Equity Fee Structures are Sticky

  • Despite the zero-commission revolution in public markets (index funds), private equity’s fee models persist due to slower competitive pressures and demand-driven innovation (02:40–03:20).

• Net Alpha Remains Positive

  • Referring to Prof. Steve Kaplan’s studies, Roger notes that PE and VC typically deliver “alpha roughly 3 to 500 basis points net of fees” (03:20).

  • Notable Quote: "Yes, the industry does... generate alpha. That doesn't mean that people should be paying for the part of the returns that is not the alpha and that's the beta." — Roger [B], (05:09)

3. Incentive Alignment within Endowments

• Allocators and Alignment

  • Alignment is Roger’s central principle. Endowments tend to align compensation to outperformance against a benchmark—typically liquid indices reflecting their “cost of capital” (05:53–07:38).
  • “If there’s only one word... it’s alignment.” — Roger [B], (05:53)
  • Comp frameworks are structured to reward staff for alpha, not pure market returns.

• Comparing Benchmarks: Why Not Only Use Other PE Funds?

  • Endowments compare both versus peer PE portfolios and public indices, using each for different purposes. Compensation is tied to what could be achieved in a passive, lower-cost alternative (07:46–09:01).

4. Co-investments: Endowment Strategy in Action

• A Tool for Reducing Fees

  • Elite endowments leverage co-investments (direct or alongside managers) to “average down [the] fee load” rather than attempt to eliminate fees directly. Major investors are rewarded with fee breaks for bringing substantial capital and certainty to GPs (09:07–10:43).

  • Quote: “...the most sophisticated investors are doing some level of co-investing... to average down that fee load.” — Roger [B], (09:07)

• Pitfalls for Non-Experts

  • Family offices often fail when trying direct investments outside their expertise. Concentration may work in a known sector, but brings poor diversification and greater risk elsewhere (10:43–11:23).

  • "What's worse than 2 and 20 is paying 100% of your investment into mistakes." — David [A], (10:43)

  • Endowments focus on "highest expected return with the lowest variance," prioritizing left-tail risk management (11:23–12:38).

5. Endowment-Style Portfolio Construction & Diversification

• The 'Art' of Portfolio Construction

  • Effective co-investing in venture capital is rare and usually reserved for later-stage VC, due to size and the need for large, diversified exposures to ride the power-law of returns (14:50–17:20).
  • “There's a very long right tail to VC returns... You have to make sure that you are making enough co-investments... to have a big winner in there.” — Roger [B], (16:00)

• Systematic, Emotion-Free Approaches

  • To manage the variance of co-investing, institutional investors seek systematic, high-volume, rigorous portfolios—capturing fee savings without extra risk (17:44–19:22).

  • “If you only do this once, you're introducing a lot of risk... What we want to do is make sure we're doing enough of these.” — Roger [B], (17:44)

6. Summation Capital: Bringing Endowment-Style Investing to Others

• Democratizing Institutional Best Practices

  • Roger’s new firm, Summation Capital, offers “endowment-style” PE investing to asset owners beyond the Ivy League, focusing on: professionalism, manager selection, portfolio construction, fee reduction, and simple product design (19:34–21:06).
  • “We innovated to get the alignment right... to get rid of fees that were really detractive to returns... and to make the product simple to use.” — Roger [B], (19:34)

• What Endowment-Style Means

  • Large scale diversification: top endowments run portfolios with 50–75+ GPs, 100s of funds, and 1000s of underlying companies—levels of diversification nearly unattainable for most families (21:13–22:15).

7. Over-Diversification vs. Smart Diversification

• Addressing the 'Deworsification' Critique

  • Roger contrasts pure index investing (John Bogle) and high concentration (Warren Buffett), proposing a “third philosophy”—diversification at the manager level, not just in the underlying assets (22:24–24:35).

  • Analogy: “Gather a bunch of hawks who are each watching their own nest... and watch them like a mother hawk.” — Roger [B], (23:40)

  • Warns against double diversification (allocators diversify, then select managers who themselves super-diversify), which can erode potential returns (24:35–24:56).

8. Aligning Real Incentives to True Alpha

• Compensation Based on Alpha, Not Beta
  • Standard in endowments but rare among private equity managers: compensation structures are tied to outperformance, not asset growth or management fees. Roger notes that despite searching, “there’s not a private equity fund... where you can... primarily pay them on the performance of Alpha.” (25:37–27:12)

Notable Quotes & Memorable Moments

• On Alignment:
  “If there's only one word that one needs to describe my style of investing or what I think is the most important word in investing, it's alignment.” — Roger [B], (05:53)

• On Portfolio Construction:
  “What I really learned about that experience was how important portfolio construction is to investment returns... There's just a lot of value that investors can get by focusing on how they construct the portfolio...” — Roger [B], (00:17)

• On Diversification Philosophy:
  “Gather a bunch of hawks who are each watching their own nest like a mother hawk, and watch them like a mother hawk.” — Roger [B], (23:40)

• On Co-Investment Volume:
  “You have to make sure that you are making enough co-investments and you're getting enough venture capital exposure that something is very likely to be in that right tail.” — Roger [B], (16:00)

• On True Risk Management:
  “The strategy that the endowments are following is designed to get the highest expected return with the lowest variance of potential outcomes.” — Roger [B], (11:23)

Timestamps for Key Segments

• Portfolio Construction & Private Equity — 00:09–02:26
• Fee Structures and Net Alpha — 02:26–05:09
• Incentives in Endowment World — 05:39–09:01
• Co-Investments for Fee Reduction — 09:01–11:23
• Concentration vs. Diversification — 11:23–12:38, 14:01–16:00
• Endowment-Style Investing & Summation Capital — 19:22–21:06
• Mega Diversification vs. Deworsification — 22:15–24:35
• Performance-Based Compensation — 25:37–27:12

Conclusion: The Endowment Edge

Roger emphasizes that endowments have built highly effective investment machines by aligning incentives to real outperformance, building portfolios with optimal diversification at the manager level, and exploiting tools like co-investments for fee efficiency. His mission at Summation Capital is to bring these sophisticated principles—long locked within elite institutions—to a broader audience of asset owners.

“This has been an absolute masterclass.” — David Weisburd [A], (27:12)