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.