Earnings Per Share and PE Ratio
Once we know how much profit a company makes, the next step is to ask:
How much of that profit belongs to me — the shareholder?
That’s where Earnings Per Share (EPS) and the Price-to-Earnings (P/E) Ratio come in.
Earnings Per Share (EPS)
EPS tells you how much net profit the company earned for each share of stock.
Formula:
EPS = Net Profit ÷ Number of Shares
Example:
If a company made $10 million in profit and has 5 million shares,
EPS = $2.00.
Why It Matters:
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EPS gives investors a clearer picture of profitability per share.
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It’s a key figure used to compare one company to another.
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Rising EPS over time is usually a good sign.
Price-to-Earnings (P/E) Ratio
The P/E Ratio tells you how much investors are willing to pay today for $1 of earnings.
Formula:
P/E Ratio = Share Price ÷ EPS
Example:
If a stock trades at $40 and its EPS is $2.00,
P/E = 20 (Investors are paying 20 times the earnings).
What Does the P/E Ratio Tell You?
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A high P/E could mean:
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The company is growing quickly.
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Investors are optimistic about its future.
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Or — it may be overvalued.
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A low P/E might mean:
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The stock is undervalued.
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Or — the company is struggling or shrinking.
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Always compare a P/E ratio to:
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Other companies in the same industry
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The company’s own historical average
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The overall market average (e.g. S&P 500 usually ranges 15–25)
Things to Watch Out For
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A company can manipulate EPS with accounting tricks or by buying back shares.
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A low P/E isn’t always a bargain — it could signal underlying problems.
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Use the P/E with other indicators, not in isolation.
Summary
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EPS shows how much profit is earned per share.
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P/E Ratio shows how much investors are paying for those earnings.
These tools help investors decide if a stock is cheap, expensive, or fairly priced based on its profitability.