FREE EXPLAINER · BEGINNER FOUNDATION
What Is Market Capitalisation?
Market capitalisation is the market value of all a company’s outstanding shares.
The simple explanation
Market capitalisation is the market value of all a company’s outstanding shares.
Why it matters
It helps compare company size more sensibly than share price alone.
A simple way to think about it
Market cap is price multiplied by shares outstanding. Enterprise value adds debt and subtracts cash for a broader view of business value.
A common beginner mistake
Assuming a £10 share is cheaper than a £100 share without checking the share count.
What to check next
- Check that you understand the definition in plain English.
- Look at the company, market and timeframe rather than one number alone.
- Ask what could change the interpretation.
- Keep risk separate from excitement or certainty.
One calm takeaway
Market capitalisation is the market value of all a company’s outstanding shares. Use it as one piece of context, never as a promise about what happens next.