Portfolio construction drives returns

If private equity generates alpha, why are investors still paying for beta? In this episode, I sit down with Roger Vincent, Founder and CIO of Summation Capital, to break down portfolio construction, co-investing, and fee alignment in private equity. After more than a decade leading Cornell University’s multi-billion-dollar private equity portfolio, Roger shares why diversification in PE actually increases expected return, how elite endowments use co-investments to systematically reduce fee drag, and why most allocators are misaligned with the capital they steward. We also unpack Summation’s industry-first structure—charging carry only on alpha over a public benchmark and offsetting fees through a no-fee, no-carry co-investment program.

Highlights:

• Why portfolio construction is the most underrated driver of returns
• The false tradeoff between diversification and performance
• Venture capital’s cyclicality vs. buyout stability
• Why private equity beta is still expensive
• Benchmarking PE against public markets for compensation alignment
• Co-investments as a 600 bps fee arbitrage
• The dangers of under-diversified direct investing
• Behavioral finance and systematic co-investing
• “Gather a bunch of hawks” — diversified specialization
• Why double diversification destroys value
• Paying carry only on alpha over a public benchmark

Guest Bio:

Roger Vincent is the Founder and CEO of Summation Capital. Previously, he spent 12 years at the Cornell University endowment, where he managed private equity investments through multiple market cycles and helped construct a highly diversified institutional portfolio.

Earlier in his career, Roger was a GP, giving him direct experience in underwriting, syndicating, and executing investments. His work focuses on alignment, portfolio construction, and bringing endowment-style investing to a broader set of asset owners.

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Sponsor:

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Disclaimer:

This podcast is for informational purposes only and does not constitute investment, financial, legal, or tax advice. Nothing in this episode should be interpreted as an offer to buy or sell any securities or to participate in any investment strategy. All opinions expressed by the host and guests are their own and do not represent the views of Weisburd Capital. Participants may hold positions or have financial interests in the companies, funds, or investments discussed. Any references to specific investments are for illustrative purposes only. Investing involves risk, including the potential loss of capital. Past performance is not indicative of future results, and any forward-looking statements are subject to risks and uncertainties. Any third-party data or opinions have not been independently verified. Listeners should conduct their own research and consult their own advisors before making any investment decisions.

(0:00) Introduction (0:42) Importance of portfolio construction and role of specific assets (2:26) Public vs. private market exposure (5:10) Influence of Professor Steve Kaplan and allocator incentives (7:38) Benchmarking and co-investment strategies (12:39) Diversification strategies for endowments (18:00) Overview of Summation Capital and misconceptions about diversification (24:14) Summation Capital's unique approach to aligning incentives (25:49) Closing remarks