Market capitalization

, also referred to as "market cap", is the total value of all outstanding shares of a company multiplied by the stock price; usually used to measure the size of a corporation.

Market capitalization represents the aggregate value of a company or stock. The investment community uses this figure in determining a company's size, as opposed to sales or total asset figures.

The stocks of large, medium and small companies are referred to as large cap, mid cap, and small cap, respectively. Investment professionals differ on their exact definitions, but the current approximate categories of market capitalization are:
 * Large cap ($10 billion plus)
 * Mid cap ($2 billion to $10 billion)
 * Small cap (Less than $2 billion)

While these are the most common market cap references, there are also some less commonly used: mega cap, micro cap, and nano cap. Market cap terms are relative and are constantly changing as companies get bigger and smaller.