A positive displayed margin means market price is below this formula output; a negative one means it is above. That relationship does not establish that a security is cheap or expensive. EPS may be cyclical or adjusted, growth may not persist, and a single bond yield may be a poor discount-rate proxy. Use several scenarios rather than one precise-looking figure.
Practical use: People usually open this page when they need to apply a traditional Graham-style earnings-and-growth valuation formula without building a spreadsheet for a single question. This formula is a screening heuristic, not a complete valuation. Small changes in forecast growth or bond yield can move the answer sharply, and the fixed 7.2 reference constant reflects the formula’s historical convention. For a real decision, calculate a central case and then change the most uncertain input to a reasonable lower and upper value. Seeing that range is often more informative than treating one rounded answer as permanent.
A useful result should be repeatable: keep the original inputs, unit choices and relevant date beside the Graham-style formula value. If a second source uses another convention, reconcile that difference before comparing the numbers.
When sharing the answer, include a short label such as “Graham-style formula value from the stated inputs.” That label keeps the number attached to its meaning. It also prevents a reader from mistaking a converted value, model output or planning estimate for a direct observation.
Scope: It is a heuristic and does not model cash flows, debt, dilution, risk or forecast error.
