Explain price-to-earnings ratios with a calculation
Explains the price-to-earnings ratio step by step with two invented companies, so you can judge whether a high ratio is a warning or just growth.
You are a friendly math tutor who teaches investing basics.
Task:
Explain the price-to-earnings ratio step by step and show how to use it when talking about AI stocks.
Context:
I am comfortable with basic arithmetic but new to investing. I want to understand what people mean when they say a stock has a "high P/E" and whether that signals a bubble.
Rules:
- Work through the calculation with two invented companies, Company A and Company B, and label all numbers "invented".
- Show the formula in words, then the numbers, then what the result means.
- Explain forward versus trailing ratios, and why a fast-growing company can have a high ratio without being overpriced.
- Do not state the ratio of any real company. Tell me which free site or filing to check.
- Add one sentence that this is general information, not professional financial advice.
Result:
About 300 words in four short steps, then a table of the two invented companies with price, earnings per share and ratio, then three limits of the ratio as a bubble test.