How to Separate Facts, Estimates, and Interpretation in Stock Analysis
Separate disclosed facts, future estimates, and value judgments when they appear in one sentence. Distinguish announced plans from completed execution and check the assumptions behind calculated conclusions.
A fact is an event or figure verifiable in a specific source; an estimate calculates a future or unverified value using assumptions. Interpretation explains what those facts or estimates are thought to mean for an investment decision.
Mark verbs and timing to see the boundaries
'Signed a contract,' 'plans a capacity expansion,' and 'expects earnings to grow' describe different stages. Distinguish the fact that a company announced a plan from the expectation that it will complete that plan. A number does not automatically make a statement factual. Next year's revenue outlook remains a future estimate even if it comes from a sophisticated model, and market size may also be an estimate dependent on research methods. Labeling statements as past, present, or future and as confirmed, planned, or expected helps avoid reading information with excessive certainty.
Calculations also depend on inputs and definitions
A directly calculated figure such as revenue growth is reproducible when the data and formula match. But misreading cumulative results as a single quarter, or treating acquired revenue as organic growth, lets correct arithmetic produce an inaccurate interpretation. Align accounting scope and periods before calculating. Then attach a comparison basis to judgments such as improved, inexpensive, or highly competitive. Without that basis, the same facts can yield entirely different conclusions, making it difficult to assess which is reasonable.
Break sentences into verifiable claims
Even an official filing does not give every statement within it the same degree of certainty. Distinguish management forecasts, market research quoted by the company, and accounting figures. A research report adds the writer's assumptions and judgments, so it is important to trace evidence and separate these layers. The possibility of differing interpretations does not turn verified facts into matters of preference. Agreeing on the figures and events first, then discussing differences over causes and persistence, makes the review more concrete.
Worked example
Hypothetical example: Suppose data show revenue rising from KRW 10 billion to KRW 12 billion, with KRW 1.5 billion of the KRW 2 billion increase coming from a newly acquired company. Total revenue growth of 20% is a calculable result. But interpreting it as 20% growth in the existing business changes the scope. Assuming no other changes, existing-business revenue is KRW 10.5 billion, or 5% growth. Separate the 20% revenue increase, KRW 1.5 billion acquisition contribution, and approximately 5% existing-business growth. Assess whether growth quality improved only after also examining profitability and cash data.
What to check
- Have you distinguished an announcement from completed execution?
- Are future numbers still labeled as estimates?
- Are the calculation period, scope, and comparison basis clear?
- Have you recorded which facts and assumptions support the value judgment?
Sources and primary materials
This is educational material about research methods. For an actual company decision, verify the filings and primary sources for the relevant period.