In one sentence: An event is why smart funds sell great businesses cheaply, which makes a margin of safety possible. The "moat numbers" (the big four growth rates) show only that a moat existed, and you still have to understand why it will last.
Key ideas
- Margin of safety is Graham's "three most important words". Pabrai calls a deep discount a free lottery ticket: you can probably exit at your cost, and the upside is free. [03:00–06:30]
- Why would experts sell a great company cheaply? Because most funds judge themselves quarter by quarter. Gildan's example: the Arab Spring pushed cotton futures up, the CEO warned of a bad year, the stock went from about $45 to about $15, and the crowd left "like a theatre where someone smells smoke". [07:00–13:30]
- Efficient market theory says that can't happen. If price always equals value, nobody should sell a $10 business for $5. Phil argues businesses differ from Picassos because they produce cash flow, so they have a value apart from the price. [13:30–17:00]
- Modern portfolio theory (MPT) rests on that theory: risk equals volatility, so higher return needs higher risk. Phil says the advisor's risk questionnaire never offers "low risk, high return". Rule #1 aims for exactly that. [17:30–21:00]
- Rule #1 strategy in one line: sit in cash until an event makes funds act rationally short-term but wrongly long-term, buy at a big discount, then either reduce basis or wait for the price to return. Low risk does not mean no risk. [19:30–21:00]
- Know the business first. Gildan has about 30% of its market, is the low-cost producer, and has relationships such as Walmart. That's why the dip looked temporary. [21:30–23:30]
- The big four growth rates are "moat numbers". Book value, EPS, sales and operating cash flow per share. Phil says the 10-year column of the website is an average of those four. If all four lines run parallel, good. [24:00–29:30]
- Do they prove a moat? Danielle presses and Phil agrees: no. They show a moat existed. Abercrombie had great numbers until fashion changed. Phil says he'll rename them "historical moat". [29:30–38:00]
- Pick a growth rate. Take the lower of your own estimate and the analysts' five-year number. Analysts are often optimistic and short-term, but Phil says use theirs while you're a novice. [38:30–42:00]
- Sticker price and margin of safety price. Plug in earnings, growth and a couple of other inputs. The result is the sticker price, and the margin of safety price is 50% of it. How it's computed follows in 024. [42:00–44:00]
- No event, no sale. Apple looked cheap on the numbers, but with the price near its high there was no fear, so Phil says it can't really be on sale. [43:30–44:30]
How it maps to RuleOne
- The screener's valuation columns are the sticker/MoS idea, and the event watch (drawdowns, insider buys) is the "event" half.
- Phil's website screens (rule one score, growth chart, MoS calculator) are what RuleOne rebuilds. Check
ruleone/valuation.pyfor how the code does it. - Don't treat the "moat numbers" as proof of a moat. They are a screen. Understanding the cause is a human or analyst step.
Buffett, Munger and Graham links
- Graham's margin of safety is ch. 20 of The Intelligent Investor.
- Buffett's "The Superinvestors of Graham-and-Doddsville" (1984 Columbia talk, published in Hermes) is the answer to the efficient-market view. Danielle and Phil date it differently in the next episode, so cite the 1984 article rather than the audio.
- Burton Malkiel's A Random Walk Down Wall Street is the efficient-market side. Shiller's Irrational Exuberance (2000, first edition) is the rebuttal Phil recommends.
Words to know
- Margin of safety: the gap between price and estimated value.
- Efficient market hypothesis: the idea that prices already reflect all available information.
- Moat numbers: Phil's name for the big four growth rates (book value, EPS, sales, operating cash flow per share).
Try this
Open a stock page and look at its four growth rates for the last 10 years. Are they close together? Then find a company where one of them is "scrambled eggs" and write down what that might mean.
Check yourself
- Why can fund managers sell a great company cheaply?
Answer
They're judged quarterly and move as a herd, so a short-term scare makes them sell even if they believe in the business. - Do 10 years of good growth numbers prove a moat?
Answer
No. They show there has been one. You still need to understand why it will last (Abercrombie's brand faded). - Which growth rate do you use in the calculator?
Answer
The lower of your own estimate and the analysts' five-year estimate.
Short quotes
"Price is just what you paid. Value is what you've got." (Phil, ~19:50, auto-transcribed)