A price answers a narrow question: on what terms can an asset be exchanged? Value asks a different one: what might ownership be worth over time? Our principle that price and value are different things begins with this distinction. Neither question can safely replace the other.
Price has the advantage of being visible. An estimate of value does not have that precision. It depends on an account of the asset, the benefits ownership may deliver, the obligations attached to it and the uncertainty surrounding those benefits. We regard valuation as a disciplined judgment, not a discovery of an immutable number.
This essay sets out a framework for that judgment. It is not a claim that prices are generally wrong, that disagreement with the market establishes an advantage, or that any particular method can remove investment risk.
Begin with the asset
Before deciding whether a price is attractive, we want to understand what is being purchased. For an operating business, that means examining how it serves its customers, earns revenue, consumes capital and responds to competition. For another kind of asset, the relevant questions may differ. The purpose remains to identify the economic substance of ownership.
Quality matters here, but it is not a substitute for valuation. A durable business can still be an unattractive investment if its price leaves too little room for disappointment. Conversely, an apparently modest quotation is not sufficient evidence of value. The asset may face obligations or deterioration that make the apparent discount misleading.
A useful analysis should describe both the sources of durability and the circumstances in which they could weaken. It should be possible to explain the investment without relying on the prestige of a sector or the popularity of a narrative.
Make assumptions visible
An estimate of value rests on assumptions about a future that cannot be known in advance. Growth, reinvestment, financing needs and the eventual uses of an asset may all affect the result. A detailed model can organise these assumptions, but the number it produces should not conceal how much depends on them.
We prefer to ask what must be true for an investment to make sense at its current price. Which assumptions are essential? Which can be wrong without changing the conclusion? What happens if progress takes longer or requires more capital than expected?
These questions encourage the use of a range rather than a single point. The range is not an assurance that all outcomes have been captured. Its role is to expose the sensitivity of the decision and identify where further understanding is needed.
Leave room for error
A margin for error is an acknowledgment of the limits of analysis. It should not be treated as a slogan that turns an uncertain estimate into a safe investment. A discount to an overstated value offers no protection merely because it looks large on paper.
For us, the margin belongs in several places: conservative assumptions, a price that does not require everything to go well, and an allocation that remains tolerable if the thesis proves mistaken. Concentration demands conviction, but conviction should follow the quality of the reasoning rather than the size of the commitment.
Independent thinking also requires the possibility that the market's assessment is better than our own. Disagreement is a reason to investigate, not an accomplishment in itself.
Reconsider without chasing
A changing quotation and a changing asset are different events, although they can occur together. Our task is to distinguish new information about economic value from a change in the terms of exchange. Neither a rising nor a falling price supplies that distinction automatically.
We would reconsider a thesis when the underlying economics or our understanding of them changes. We would also reconsider a decision when price materially changes the balance between opportunity and risk. Patience does not mean ignoring either development.
Capital preservation precedes compounding. In this framework, that begins with admitting that value is an estimate, keeping its assumptions open to challenge, and refusing to let the clarity of a price imply a certainty that the analysis does not possess.