In one sentence: Munger's fourth filter says no business is worth an infinite price, so the price must make sense and leave a margin of safety. That clashes with the academic view that price equals value, and Phil explains why the market is emotional in the short run.
Key ideas
- Prerequisites first. The first three filters make you able to value the business. Looking at price first wastes effort, since you can't estimate future cash flow for a business you don't understand. A shortcut is promised for later. [01:00–05:00]
- "Vicissitudes of life." Bad things (9/11, the 2008 crash) come regardless, so build a margin of safety. Most professionals buy nothing in March 2009, and Phil says he bought. [07:00–10:00]
- Diversification is protection from ignorance. It rests on two ideas: the market always rises in the long run, and nobody can beat it. Buffett's line is that diversification is for the ignorant. $10,000 in the market from 1960 is roughly $500k, against about $40m with Buffett (Phil's figures). [10:00–12:30]
- A business is not a Picasso. A business produces cash, so its value lies in a defined range of what the cash flows are worth today. Price is what you pay, value is what you get. [13:00–16:00, 35:00–38:00]
- Margin of safety. Pay less than a sensible price, because your forecast could be wrong. The aim is "$10 bills for $5". [16:00–18:00]
- Private versus public. Private companies sell at roughly half the public multiple (Phil's example: nine times earnings against 18). Public prices include liquidity and tougher disclosure. A Rule #1 investor wants a public company at a private price. [18:00–20:00]
- Efficient market hypothesis (EMH). Prices reflect all information, so price equals value and no discount exists. Phil's counter is the 1929 fall and the 2008 crash, which theory explains only by dropping its assumption that people are rational. [20:00–26:00]
- Ben Graham's voting and weighing machine. In the short run the market votes (emotion), in the long run it weighs (value). [26:00–27:00]
- Scared money. Fund managers sell in a crash because their investors withdraw, not because the businesses changed. Chipotle kept growing in 2008–09 but fell with the market. Buffett and Munger have no such redemptions, so they can take the other side. [27:00–34:30]
- Rules of thumb for value. Private deals go for about 7–8 times earnings, public deals for about 13–15 (the episode says "cash flow", and later episodes use earnings). Both are far from infinite. [37:00–38:00]
How it maps to RuleOne
- The site's valuation page should show price against an estimate of value with a margin of safety. The key figure is the discount to sensible price, not the price alone.
- The event watch (drawdowns) is the signal that fear is moving prices without the business changing. Check whether the business news actually changed.
Buffett, Munger and Graham links
- Graham's "voting machine in the short run, weighing machine in the long run" is from The Intelligent Investor (ch. 8, Mr. Market) and Buffett's later letters.
- Margin of safety: Graham, The Intelligent Investor, ch. 20.
- "Diversification is protection against ignorance" is a Buffett remark made in several talks. Check the exact wording before quoting it.
Words to know
- Margin of safety: the gap between a sensible value and the price you pay.
- Efficient market hypothesis: the theory that prices already reflect all available information.
- Market cap: share price times the number of shares.
Try this
On /stocks/, find a stock that has fallen at least 30% from its high. Write down whether the business changed (earnings, moat) or only the price. If only the price, add it to a watch list with your estimate of value.
Check yourself
- What does "price is what you pay, value is what you get" mean?
Answer
The market price can differ from what the business is worth. You judge value from the cash flows you will receive. - Why might fund managers sell good businesses in a crash?
Answer
Their investors withdraw money (scared money), so they must sell whatever the business quality. - Why do private companies sell at lower multiples than public ones?
Answer
Public shares are liquid and the information is far more complete, so they command about double.
Short quotes
"Price is what you paid. Value is what you got." (Phil, citing Buffett and Munger, ~36:00, auto-transcribed)