Eddie Perkin - Battling Biases and Building Better Investment Teams

Episode Summary

Executive Summary: Eddie Perkin argues that great investing depends less on prediction and more on judgment, process, and organizational design. He shares lessons from a long career in global equity investing, emphasizing quality value, margin of safety, long-term thinking, and team cultures that reward dissent, accountability, and independent judgment while fighting biases like confirmation bias, endowment, and outcome bias.

Main Topics: From childhood curiosity to investing career (Priority: 5/5): Perkin traces his path from Johannesburg to Houston and San Diego, describing how early exposure to inflation, interest rates, compound interest, and Buffett/Graham inspired him to pursue investing and Columbia Business School. Quality value investing and margin of safety (Priority: 5/5): He defines his style as buying high-quality businesses at a discount to intrinsic value, preferring companies with durable returns on capital, balance-sheet strength, and sustainable reinvestment opportunities. International and emerging markets differences (Priority: 4/5): Perkin explains that Europe is often more similar to the U.S. than expected, while emerging markets require local presence, trading awareness, and on-the-ground information advantages. Behavioral biases and better decision-making (Priority: 5/5): He discusses endowment effect, sunk cost fallacy, confirmation bias, overconfidence, and conviction bias, arguing that investors should actively try to disprove their own theses. Processes for long-term investing and variant perception (Priority: 5/5): He describes exercises like the Robinson Crusoe framework and time-traveling reporter to focus teams on durable compounders and to separate meaningful long-term signals from short-term noise. Leading teams, culture, and incentives (Priority: 4/5): Perkin emphasizes focus, accountability, empowerment, constructive conflict, and independent interviews/voting as tools to build effective investment teams and avoid groupthink. AI, indexing, short-termism, and the future of investing (Priority: 4/5): He is skeptical that indexing alone has made markets inefficient, sees AI as a useful devil’s advocate rather than a substitute for foundational work, and remains optimistic that change creates opportunity.

Key Arguments: Investing success depends more on judgment under uncertainty than on having abundant data or computing power. Quality matters first: Perkin seeks businesses with high, sustainable returns on invested capital and strong balance sheets before considering valuation. Screens are useful for narrowing the field, but rigid valuation screens can exclude the best opportunities and overweight the wrong ones. Variant perception emerges from deep work, not from a thesis invented at the end of a pitch. Biases are amplified by the industry’s obsession with conviction, which can prevent analysts from changing their minds when evidence changes. Good investment teams need constructive conflict, anonymous dissent, and independent feedback to avoid consensus-driven mistakes. The sell decision is often harder and more important than the buy decision, so teams should add friction before exiting positions. Indexing and passive investing do not automatically destroy market efficiency because active investors still provide the price discovery that passive funds free-ride on. AI can help search, collate, and challenge ideas, but it should not replace direct work with filings, footnotes, and primary sources. Long-term opportunity is greatest when markets are changing quickly, because disruption creates mispricing and new winners.

Data Points: Career experience: 25 years - Perkin’s global asset management experience Team size led: 70 investment professionals - At Eaton Vance as CIO of the Equity Business Assets managed: $75 billion - Assets under management at Eaton Vance Duration of desert island exercise: 5 to 7 years - Robinson Crusoe exercise used to force long-term thinking Original Robinson Crusoe reference: 28 years and 2 months - Length of time in Daniel Defoe’s book Baseball card lesson: $50 - His first bank account balance as a child Baseball card lesson: 50 cents - Quarterly interest earned on the first savings statement Baseball card lesson: 4% annualized - Interest rate on the passbook savings account Baseball card lesson: Several dollars vs. worthless cards - Asymmetric information lesson from trading a Don Mattingly card Two-point conversion introduction: 1994 - NFL adopted the two-point conversion rule NFL model pitch: 1998 - Perkin presented his improved decision model to NFL teams Financial crisis backdrop: 2007-2008 - REIT valuation work and later team leadership during crisis Blind voting effect: More dissent emerged - Anonymous voting uncovered more disagreement than show-of-hands votes Retail trading volume: 20% - Referenced as current share of trading volume in the market Media/advice horizon: One year from today - Time-traveling reporter exercise for distinguishing noise from signal

Pivotal Quotes: "I want to buy a Mercedes-Benz with a scratch on the side." — Eddie Perkin: His shorthand for quality value investing: strong business, but discounted due to a temporary issue "I’m on a mission to purge the word conviction from our industry lexicon." — Eddie Perkin: Critique of how the investment industry rewards overconfidence and discourages changing one’s mind "We won’t use 28 years. We’ll use a five to seven year horizon." — Eddie Perkin: Explanation of the Robinson Crusoe exercise for evaluating durable compounders

Implications: Listeners should expect better results from disciplined process, humility, and long-term thinking than from heroics or prediction. For the industry, the message is to build teams that debate well, use AI carefully, and reward evidence-based decisions over ego and speed.