The NYSE operates both a bond trading floor and an Automated Bond System (ABS), where listed bonds may be traded. A stock's book value is determined by adding up all of a company's assets and then deducting all of its debt and liabilities, including the liquidation price of any preferred issues.
This sum is then divided by the number of common shares outstanding, and the result is book value per common share.
The beta is a covariance of the stock in relation to the rest of the stock market.
The Standard & Poor's 500 Stock Index has a beta coefficient of 1.
Until 1921, it was known as the New York Cumulative Exchange.