David Einhorn - The Long and Short of Investing - [Invest Like the Best, EP.322]

Here is the English translation of the provided Chinese investment research notes, following all specified rules.

At a Glance

David Einhorn (President of Greenlight Capital) reflects on his nearly three-decade investment career, arguing that the market has shifted from "value discovery" to "momentum and passive dominance," and has restructured his portfolio accordingly. He argues that the Fed's rate hikes over the past year have actually stimulated the economy rather than tightened it, because rising rates from extremely low levels have increased household net interest income, explaining why the economy remains strong despite high inflation.

The Market Has Shifted from "Value Debate" to "Momentum Dominance"

David Einhorn believes the current market environment is fundamentally different from 1996 when he founded his fund, and the edge from fundamental analysis has been significantly eroded.

• Past vs. Present: In 1996, there were "intense, active debates" about a company's value, where balance sheets and fundamental analysis provided a sustainable edge. Today, trading volume based on "what a company is worth" has dramatically decreased, replaced by momentum trading and passive investing based on "what price it will trade at."
• Distorting Effect of Passive Investing: Einhorn points out that the flow of capital from active management to passive indices has created a structure that "rewards high valuations." When money flows into index funds, they buy in proportion to market capitalization, meaning the higher a stock's valuation, the more it gets bought. This creates a phenomenon of "redeeming from low-valuation stocks and redeploying into high-valuation stocks," putting immense pressure on value investors.
• Changes in Analyst Ecosystem: Today, during company earnings calls, almost all questions come from sell-side analysts, with very few buy-side institutional investors participating. Professional attention on small-to-mid cap, non-hot sector companies has "definitely declined significantly."

The "Jelly Donut" Theory: Low Rates Shift from Stimulus to Suppression

Einhorn proposes the "Jelly Donut" theory, arguing that monetary policy's impact on the economy is non-linear; when rates are too low, their effect can shift from stimulus to suppression.

• Mechanism Breakdown: When rates fall from 10% to 8%, it significantly lowers the cost of capital, stimulating investment and consumption. But when rates are already near zero, further cuts no longer change real economy decisions. At this point, rate cuts actually harm the economy because U.S. household balance sheets hold $17 trillion in rate-sensitive assets (like money market funds) but only $5 trillion in rate-sensitive liabilities (as 90% of mortgages are fixed-rate). The net position is a $12 trillion asset sensitivity. Therefore, a 1% rate cut would drain $120 billion in income from the household sector, suppressing the economy.
• Current Counter-Intuitive Phenomenon: Einhorn argues that the Fed's rate hikes from 0% to 4% effectively injected roughly $500 billion/year in income into the household sector, acting as a stimulus. This explains why retail, consumption, and employment remain strong during a rate hiking cycle. He believes the previous tightening "hasn't really taken effect yet" because it's like "finally stopping the jelly donut diet," making the economy healthier instead.

Evolution of Investment Strategy: From "Waiting for Discovery" to "Waiting for Returns"

Facing structural market changes, Einhorn has restructured his portfolio, shifting from relying on other investors to discover value to relying on companies themselves to return capital through buybacks and dividends.

• Adjustment to the Three-Step Process: His previous three-step process (understand real economics, compare reported profits, check management incentives) has been simplified to two steps: assess company value + ensure management alignment with shareholders. The second step (comparing reported profits) has become "irrelevant" because "nobody pays attention."
• New Return Mechanism: In the past, he could buy a company at 11x earnings, waiting for earnings growth and multiple expansion. Now, even if earnings grow, the multiple might compress from 11x to 7x, resulting in no profit. Therefore, he shifts to buying companies at 4x earnings with a 20% buyback rate, hoping that through continuous share repurchases and cancellations, he will eventually "own the last share," achieving capital returns. This requires a longer holding period and a lower entry price.
• Role of Short Selling: Short selling not only provides negative returns but also offers liquidity during market declines. When the market drops 10%, short positions release cash, allowing him to buy more undervalued long positions.

Views on the Current Banking Crisis: Risk Management Failure, Not Systemic Crisis

Einhorn believes the current troubles for some banks are a "Banking 101" level risk management failure, not a 2008-style systemic crisis.

• Core Problem: Some banks severely mismatched the duration of their balance sheets, funding long-term, low-rate assets (like mortgage-backed securities) with short-term liabilities. When short-term rates rose, funding costs increased while asset yields were locked in, creating a "negative carry." This is a risk management failure.
• Difference from Allied Capital: Einhorn notes that the Allied Capital case involved the company "not following accounting standards" for valuation. The current bank issues are more about following accounting standards, but the market is assessing the consequences.
• Reflection on "Large Deposits": He argues that corporate treasurers failed in their duty to "ensure cash safety," placing deposits exceeding FDIC insurance limits in riskier banks to chase higher yields. He questions whether changing rules retroactively to reward this behavior is appropriate.
• Conclusion: He leans towards this not being a systemic crisis, but a problem with a few banks. In a capitalist system, these banks and their investors should bear the losses.

Position Moves

Ticker	Analyst Stance	Key Data
Apple (AAPL)	Historical Case (Bullish)	Bought near cash value (before Steve Jobs' return), sold after a 30-40% rise, missing massive gains. Bought again later, held for 5-6 years when P/E was 6-9x, believed high margins were sustainable (software + hardware), eventually sold at 25x P/E.
Greenbrick Partners (GRBK)	Bullish (Current Position)	ROE over 30% last year, analysts expect 15% ROE this year. Current price slightly above book value, trading at 9x this year's expected earnings, or 5x last year's actual earnings. Einhorn considers this a "volatile 15%" better than a "stable 6-8%."
Markel (MKL)	Research Case	Mentioned researching its insurance history.
Allied Capital	Historical Case (Bearish)	Shorted in 2002, ultimately proven correct. Core issue was the company not following accounting standards for fair value measurement.
Lehman Brothers	Historical Case (Bearish)	Publicly announced a short position at the 2008 Sohn Conference.
Chipotle (CMG)	Historical Case (Bearish)	Mentioned shorting a basket of expensive stocks, including Chipotle and Amazon, which subsequently underperformed.
Amazon (AMZN)	Historical Case (Bearish)	Same as above.

Memorable Takeaways

1. Passive investing has shifted from "price taker" to "price maker" (David Einhorn): When money flows from valuation-conscious active funds into market-cap-weighted index funds, the system "rewards high valuations." This leads to continuous capital drain from value stocks and continuous buying of high-valuation stocks, creating extreme distress for value investors from 2015-2018.

2. The "Jelly Donut" Theory: Low-rate policy has a non-linear inflection point (David Einhorn): Rate cuts are stimulative when rates are high, but near zero, they become contractionary due to reduced household net interest income. Conversely, raising rates from zero acts as a stimulus by increasing household income. This explains the current economy's resilience despite high rates.

3. Investment strategy has shifted from "waiting for the market to discover value" to "waiting for the company to return capital" (David Einhorn): Due to a lack of attention from other investors, he no longer counts on multiple expansion. The new model is to buy companies at very low P/E ratios (e.g., 4x) with large buyback programs, aiming to eventually "own the last share" through continuous repurchases and cancellations.

4. The current banking crisis is a "Banking 101" level risk management failure (David Einhorn): Some banks used short-term liabilities to fund long-term, low-rate assets, creating a severe duration mismatch. This is an issue with individual banks, not a 2008-style systemic crisis. He questions whether corporate treasurers who failed to prudently manage cash should be bailed out.

5. One of the core values of short selling is providing "liquidity in a downturn" (David Einhorn): When the market drops 10%, cash released from short positions can be used to add to undervalued long positions. This makes short selling not just a hedge, but a source of capital for contrarian investing.

6. In investing, asking the right question is more important than getting the answer (David Einhorn): When analyzing a subprime auto finance company early in his career, his analysis failed because he didn't anticipate the loss scenario of "not being able to find the car to repossess." This taught him the need to deeply understand the real economic mechanics of a business and know what questions to ask.

7. An edge in poker comes from "caring less" (David Einhorn): For professional players, the tournament is their livelihood and a chance to prove themselves, creating immense pressure. Einhorn treats it as a hobby, maintaining a relaxed mindset that allows for better decisions. This lets him "punch above his weight" against technically superior opponents.

8. "You're probably smarter than everyone else in the class, but you'd be better off if you didn't tell them" (Mrs. Olson, 3rd-grade teacher): This advice from a teacher gave Einhorn self-awareness about how he is perceived by others. He believes the market teaches him humility every day, and admitting mistakes and cutting losses is part of investing.