Market Capitalization Market cap
The total dollar value of a company's outstanding shares — share price times shares outstanding.
What it is
Market capitalization is the market's price tag for a company's equity. It is the current share price multiplied by the number of shares outstanding. It reflects what investors collectively are willing to pay for the whole company's stock, not the company's debt, cash, or book value.
Why it matters
Market cap tells you a company's size and is how stocks are sorted into large-, mid-, and small-cap groups, which carry different risk and liquidity profiles. A common pitfall is treating it as the cost to buy the business outright — it ignores debt and cash, so two companies with the same market cap can have very different total values (see enterprise value).
How it's calculated
Multiply the latest share price by the total number of shares outstanding; use fully diluted shares if you want to include options and convertibles.
How Quintarthai uses it
Market cap appears in the Key-metrics grid on a stock's Summary page and is a filter in the Stock Screener; see it on a company's deep-analysis page.