📏 Measuring market share
Recap: Market share (%) = (Company's sales ÷ Total market sales) × 100
But HOW you measure it matters — there are different ways to look at market share.
Ways to measure market share
- By value — based on revenue/sales income (good for comparing profitability)
- By volume — based on number of units sold (good for comparing popularity)
- By customers — percentage of total customers in the market
- Over time — tracking how market share changes month-by-month or year-by-year
Example: A budget airline might have a high market share by volume (lots of passengers) but a lower market share by value (cheap ticket prices).
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📈 Using market share data
Market share data is powerful — but only if you know how to use it.
- Compare with competitors — are we gaining or losing ground?
- Spot trends — is our share growing, stable or shrinking?
- Set objectives — 'increase market share from 12% to 15%'
- Evaluate marketing strategies — did our campaign actually work?
- Attract investors — growing market share shows business strength
Limitations of market share data
- Doesn't show profitability — you can have high share but low profits
- Market definitions can vary — what counts as 'the market'?
- Data may be outdated or inaccurate
- Doesn't explain WHY share is changing
Exam tip: Always consider WHETHER market share is the best measure for the situation — it's useful but doesn't tell the whole story.