MI345: A Decade Outperforming The NASDAQ w/ Brian Stoffel
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布莱恩·斯托费尔（Brian Stoffel）是一位业绩表现令人瞩目的投资者，从2014年12月31日至2023年12月31日，他实现了17.7%的复合年增长率（CAGR），显著跑赢了标普500指数（11.3%）和纳斯达克综合指数（15%）。他将这一成功归因于一种独特且反脆弱的投资策略，该策略深受纳西姆·尼古拉斯·塔勒布（Nassim Nicholas Taleb）的影响。
斯托费尔强调了公开个人业绩记录的重要性，这是他从塔勒布的《肥尾效应》（Skin in the Game）一书中汲取到的教训。作为前The Motley Fool的撰稿人，他意识到分享自己投资业绩的道德义务，尤其是在提供投资建议时。他发现，他推荐并亲自持有的股票表现明显优于他未持有的股票，这印证了“以身作则”（eating your own cooking）的理念，并促进了更明智的投资决策。
他的核心投资理念围绕着识别“反脆弱”企业。受塔勒布这一概念的启发，斯托费尔寻找那些不仅能抵御混乱和不确定性，反而能从中变得更强大的公司。他寻找具备以下特征的企业：
1. **宽护城河（防御）：** 受保护的竞争优势。他确定了五种类型：转换成本、网络效应、低成本生产（规模经济）、无形资产（专利、品牌）和反向定位。他最喜欢的是转换成本，并以个人银行经历、直觉外科（Intuitive Surgical）以及像Netflix这样的“隐蔽转换成本”为例。
2. **可选择性（进攻）：** 创造新产品或服务以推进其使命的能力，例如Axon（从泰瑟枪到执法记录仪和软件）或Datadog（扩展其工具集）。这在科技公司中往往更容易实现。
3. **拥有“切身利益”的管理层：** 领导者的个人财富与公司的成功息息相关。
4. **冗余性：** 避免单点故障，保持充裕现金储备，并产生正向自由现金流。他强调自由现金流而非利润，指出“利润是一种观点，你无法触及利润。但你可以触及自由现金流。”这种财务实力使公司能够抵御不可预见的挑战。
斯托费尔的投资组合构建方法是，在有前景的反脆弱公司中建立小额头寸（约占1%）。随着企业证明自身实力，他会增加持仓，通常增至5%，然后任其发展。他认为自己主要是一名成长型投资者，被成长股中固有的巨大上涨潜力和可选择性所吸引。
他的策略的一个关键演变，尤其是在2022年市场低迷之后，是他如何使用估值。虽然估值在判断他*是否*购买一支反脆弱股票方面扮演“零角色”，但对于*配置*来说却至关重要。他解释说，他早些时候没有卖掉Shopify，即使当时它达到了一个“疯狂”的估值，需要连续10年实现100%的自由现金流增长，这是一个艰难的教训。现在，如果一只股票的预期变得过高，他可能会减持头寸以管理风险。
为了评估这些预期，斯托费尔非常依赖**反向贴现现金流（Reverse DCF）模型**。与预测价格的传统DCF不同，反向DCF模型是根据当前股价和期望的折现率（回报），计算出该公司*需要*实现多少未来的自由现金流增长率才能支撑当前价格。这迫使他批判性地评估市场隐含的假设：“这看起来有多合理？”他经常假设一家公司已经达到了其成熟的自由现金流利润率（例如，CrowdStrike的38%），以便找出他评估中可能存在的潜在错误。他还使用概率估值（悲观、基础、乐观情况），并且总是给悲观情况最高的权重，以理解潜在结果的范围。
对于分析师的估算，斯托费尔与沃伦·巴菲特（Warren Buffett）的观点基本一致，认为它们对长期投资毫无用处。他承认这些估算可以解释财报发布后的短期股价波动，但并不能作为他长期投资论点的依据。
他还谈到了“叙事”的力量——那些影响投资者情绪的故事。他通过首先独立分析公司的财务报告并形成自己的观点，*然后再*接触外部评论来对抗这种影响。这有助于他避免无意识地顺从主流市场叙事。
斯托费尔将时间分配在威斯康星州和哥斯达黎加两地，他不仅在投资中，也在生活中践行着他的哲学，利用地理灵活性。他承认有些公司，比如英伟达（NVIDIA），他选择不投资并非因为估值，而是因为他觉得无法深入理解它们的竞争护城河，这强化了他坚持自己所了解领域的纪律性。
Brian Stoffel, an investor with a remarkable track record, achieved a 17.7% compounded annual growth rate (CAGR) from December 31, 2014, to December 31, 2023, significantly outperforming the S&P 500 (11.3%) and NASDAQ Composite (15%). He attributes this success to a unique, anti-fragile investment strategy heavily influenced by Nassim Nicholas Taleb.
Stoffel emphasizes the importance of transparency regarding one's track record, a lesson he learned from Taleb's "Skin in the Game." As a former Motley Fool writer, he realized the moral obligation to share his own investment performance, especially when giving advice. He found that stocks he recommended and personally owned performed significantly better than those he didn't own, reinforcing the idea of "eating your own cooking" and fostering better investment decisions.
His core investing philosophy revolves around identifying "anti-fragile" businesses. Inspired by Taleb's concept, Stoffel seeks companies that not only withstand chaos and uncertainty but actually grow stronger from it. He looks for businesses with:
1. **Wide Moats (Defense):** Protected competitive advantages. He identifies five types: switching costs, network effects, low-cost production (economies of scale), intangibles (patents, brand), and counter-positioning. His favorite is switching costs, citing personal banking experiences and Intuitive Surgical as examples, and even "sneaky switching costs" like Netflix.
2. **Optionality (Offense):** The ability to create new products or services that further their mission, like Axon (from Tasers to body cameras and software) or Datadog (expanding its toolset). This is often easier in tech companies.
3. **Management with Skin in the Game:** Leadership whose personal wealth is tied to the company's success.
4. **Redundancy:** Avoiding single points of failure, maintaining robust cash reserves, and generating positive free cash flow. He stresses free cash flow over profit, noting that "profit is an opinion, you can't touch profit. You can touch free cash flow." This financial strength allows companies to weather unforeseen challenges.
Stoffel's portfolio construction involves initiating small positions (around 1%) in promising anti-fragile companies. As a business proves itself, he adds to the position, typically up to 5%, and then lets it run. He considers himself primarily a growth investor, drawn to the significant upside and optionality inherent in growth stocks.
A key evolution in his strategy, particularly after the market downturn of 2022, is how he uses valuation. While valuation plays "zero role" in *whether* he buys an anti-fragile stock, it is crucial for *allocation*. He explains that he didn't sell Shopify earlier, even when it reached an "insane" valuation requiring 100% FCF growth for 10 years, which was a tough lesson. Now, if a stock's expectations become too high, he may trim his position to manage risk.
To assess these expectations, Stoffel heavily relies on the **reverse discounted cash flow (DCF) model**. Unlike a traditional DCF that predicts a price, the reverse DCF takes the current stock price and a desired discount rate (return) and calculates the future free cash flow growth rate the company *needs* to achieve to justify that price. This forces him to critically evaluate the market's underlying assumptions: "How reasonable does that seem?" He often assumes a company has already reached its mature free cash flow margin (e.g., 38% for CrowdStrike) to pinpoint where potential errors in his assessment might lie. He also uses probabilistic valuations (bear, base, bull cases), always weighting the bear case highest, to understand the range of potential outcomes.
Regarding analyst estimates, Stoffel largely agrees with Warren Buffett, viewing them as useless for long-term investing. He acknowledges they can explain short-term stock movements post-earnings but don't inform his long-term thesis.
He also addresses the power of "narrative" – the stories that influence investor sentiment. He counters this by first independently analyzing a company's financial reports and forming his own opinion *before* engaging with external commentary. This helps him avoid unconsciously conforming to prevailing market narratives.
Stoffel, who splits his time between Wisconsin and Costa Rica, exemplifies his philosophy not just in investing but in life, leveraging geographic flexibility. He admits there are companies, like NVIDIA, that he chooses not to invest in not due to valuation, but because he doesn't feel he deeply understands their competitive moat, reinforcing his discipline to stick to what he knows.
摘要
Kyle Grieve chats with Brian Stofell about the crucial role of being transparent with your track record, how to score anti-fragility, managing risk in a portfolio where evaluation isn’t critical, the interplay of narrative and investor sentiment, how to utilize a reverse DCF to find the market's assumptions on growth, investment lessons from Nassim Nicholas Taleb, how to weight probabilities for analyzing the outcome of a stock, and a whole lot more!
IN THIS EPISODE, YOU’LL LEARN:
00:00 - Intro
03:12 - The significance of track record in decision-making processes.
03:50 - The crucial role of having "skin in the game" in various ventures.
08:56 - Insights into Brian's transition towards tech-oriented businesses.
09:13 - Why Brian adds a stock at any price, regardless of valuation, if the business is anti-fragile.
09:13 - The importance of free cash flow when looking at loss-making businesses.
14:30 - How Brian enters a position and how he allows it to earn its way to a higher allocation.
19:57 - Exploring the anti-fragility inherent in specific tech sectors.
37:52 - Why switching costs are so easily identifiable.
40:56 - How to use RDCF to help you better understand the assumptions made about a business.
46:22 - The importance of understanding the relationship between narratives and price.
And much, much more!
*Disclaimer: Slight timestamp discrepancies may occur due to podcast platform differences.
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