A teardown produces a "good-enough-to-have-an-opinion" read. When it is done, you can do four things you could not do ninety minutes earlier:
- Explain the business to a smart friend who knows no finance: what it sells, who pays, and why the money is good or bad, in about two minutes, without notes.
- Say whether it is a good business: whether it earns returns on capital durably above its cost of capital, or whether it is an ordinary or poor business dressed in a good story.
- Name the three things that actually matter to its future: the two or three variables that, if you got them right, would make you roughly right about the company, and everything else is detail.
- Judge whether the price looks demanding or generous. Not what the company is worth to the rupee, but whether today's multiple is asking the future to deliver a lot or a little, and whether that "a lot" is plausible.
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Is a teardown a valuation?
Notice what is not on that list. A teardown is not a valuation. You do not build a model, you do not compute a per-share value, you do not produce a target price. The instinct to reach for a DCF in hour one is the single most common way beginners waste a teardown: a three-statement model built on numbers you have skimmed for forty minutes is false precision with a spreadsheet's authority, and it will anchor you to a figure you have not earned. The teardown's currency is pattern-matching, not computation. You are placing this business against the hundreds you have read (Section 5.2's whole point) and asking what kind of thing is this, and have I seen this pattern end well or badly before? A great teardown feels less like arithmetic and more like a doctor's first two minutes with a patient: history, a few vital signs, a working diagnosis, and then the actual deliverable — the one test worth ordering next.
That last idea is the hinge of the entire signature skill, so hold it precisely. The output of a teardown is a provisional verdict plus one variant question. The variant question (Mauboussin and Rappaport's Expectations Investing language, which Phase 8's reading spine formalizes) is the single thing about which your read of the business differs, or might differ pending research, from the story the market's price is telling. It is what a deep dive exists to resolve. "Is Titan's jewellery growth being bought with rising making-charge discounts, or is it genuine premiumization?" "Are Costco's membership renewals as durable in a recession as the 90% headline suggests?" A teardown that ends in a clean eight lines and a sharp variant question has done its whole job; a teardown that ends in a target price has misunderstood the assignment and probably wasted the deep dive it should have been scoping.
Why speed is a feature, not a compromise. The point of doing this in ninety minutes is not laziness; it is throughput. An analyst who can teardown a company well in ninety minutes can look at a hundred businesses a quarter and deep-dive the five that deserve it. An analyst who needs three days to have any opinion looks at a dozen a year and deep-dives things that a teardown would have rejected in an hour. The teardown is the filter that makes the deep dive affordable. Across a career the filter compounds harder than the deep dive does, because avoiding the twenty businesses not worth studying is worth more than perfecting the study of the one that is.
The ninety-minute budget: where the minutes go
You will not spend equal time on twelve questions, because they are not equally hard or equally decisive. Roughly two-thirds of a teardown's value sits in the money machine (how the economics work and whether they're good) and the price (what's implied). Here is the standing allocation. Memorize it; the app's timed mode enforces it with soft section timers:
| Minutes | Block | Questions | What you produce |
|---|---|---|---|
| 0–10 | Orient | Q1 what/how · Q2 customers | One-line business description; the revenue lines named; the profit engine hypothesis |
| 10–35 | The money machine | Q3 ₹1→FCF · Q4 unit economics · Q7 economics | Margin structure; ROIC vs hurdle; growth = volume vs price; cash conversion (the good/average/poor call lives here) |
| 35–55 | The franchise | Q5 competition · Q6 moat · Q8 capital allocation | Share direction; moat source + strength; where a decade of cash went and at what return |
| 55–70 | People & risk | Q9 management/incentives · Q10 the 3 risks | Alignment quick pass; the two-to-three things that could actually break it |
| 70–85 | The price | Q11 what's implied · Q12 cheap/expensive vs quality | The reverse-multiple read; the demanding-or-generous verdict |
| 85–90 | Write | — | The eight-line output + the one variant question |
What if you only have 60 minutes?
For a strict 60-minute teardown (Phase 8 reps and certification), compress each block by a third and skip nothing. You lose depth per question, not questions. The order matters: you decide whether the business is good (the money machine) before you look at what it costs (the price), because knowing the price first poisons the judgment. A low multiple makes you generous about a bad business, a high one makes you skeptical of a good one.
Quality first, price second, always.