Start with one question: how does this business actually make money?
Before ratios, models or comparisons, there is a simpler question most investors skip - and being able to answer it plainly is what separates research from reading.
Research should begin with a question so basic it is often skipped: how does this business actually make money? Not what sector it is in, not what the growth rate was - what a customer pays for, why they choose this company, and what it costs to serve them. If that cannot be explained plainly, nothing downstream is reliable.
Follow one rupee through the business
Trace a single unit of revenue: who pays it, what it costs to deliver, what is left, and what has to be reinvested to earn the next one. That walk explains the margin, the capital intensity and the growth constraint at once - and it exposes businesses whose reported profits depend on something other than serving customers well.
Then ask why it continues
Understanding today's economics is only half of it. The second question is why they persist: what stops a competitor doing the same thing cheaper, and what would happen to this business if its largest customer or supplier changed terms. Durability, not the current margin, is what a long-term investor is actually buying.
Valuation comes last, and it is easier
Once the business is genuinely understood, valuation stops being an exercise in modelling and becomes a judgement about what such a business is worth. Most valuation disputes are really disagreements about the business that were never made explicit.
Got a question on what you have just read - on bottom-up research, quality investing, or the Category III AIF structure? Write directly to the office. These essays are general views only, not investment advice.
A research-led equity investor with over twenty years in the Indian markets. Designated Partner of Stonebridge Advisors LLP, Investment Manager of Anchor Rock Investment Fund - I, a SEBI-registered Category III AIF.